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How to set custom font in xml Android

Android API 16+

Beginning with Android 8.0 (API 26), there is native support for setting the fonts in XML. However, using the support library extends this down to Android 4.1 (API 16).

1. Add a font to your project

Right click the res folder and go to New > Android Resource Directory. Type font as the name and font as the Resource type.

Copy and paste your font into the new res/font directory. I'm just using a single font in my example, the regular dancing script font. I renamed it to dancing_script.ttf just to avoid any potential naming problems with upper case or illegal characters.

2. Create a font-family XML file.

Right click the res/font folder and choose New > Font Resource File. Call it whatever you want. I'm calling mine my_custom_font.xml.

Paste in the following code. Note that the attributes are set twice, once for android (API 26+) and once for app (API 16+).

<?xml version="1.0" encoding="utf-8"?>

<font-family xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto">

    <font

        android:fontStyle="normal"

        android:fontWeight="400"

        android:font="@font/dancing_script"

        app:fontStyle="normal"

        app:fontWeight="400"

        app:font="@font/dancing_script"

        />

</font-family>

3. Set the font in XML

Now you can just use the fontFamily attribute to set the font in XML.

<TextView

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:text="Hello World!"

    android:fontFamily="@font/my_custom_font" />

Notes

Read the documentation for more help.

If you need to support pre-API 16, then just set the font programmatically.

How to Create Multiple Tabs In a Single Screen Using Android Tab Layout

How to Create Multiple Tabs In a Single Screen Using Android Tab Layout

Being an Android app development company, we encourage our best Android app developers to write and share their knowledge with our audience by writing an Android tutorial. This article is one of them. This article is all about how to create multiple tabs in a single screen using Android Tab Layout.

While using tablayout In Android, there is a new element introduced in Design Support Library. Basically, it provides horizontal layouts to display Android tabs on the screen. Using Android tablayout, we can display more than one screen in a single screen.

What is Android Tab Layout?

Android Tab Layout is basically a view class required to be added into the layout of our app to create sliding tabs.

However, you can create sliding as well as non-sliding tabbed activity by using Android tablayout. If you want to add Android tabs without sliding, then replace the layout with the fragment on tab selected listener event. And, if you want to add sliding tabs, then use ViewPager.

In this Android tablayout example, we’ll see how to add Android tabbed activity with sliding using ViewPager.

Create Java class name “ViewPagerAdapter”

class ViewPagerAdapter extends FragmentPagerAdapter {

    private String title[] = {"One", "Two", "Three"};

    public ViewPagerAdapter(FragmentManager manager) {

        super(manager);

    }

    @Override

    public Fragment getItem(int position) {

        return TabFragment.getInstance(position);

    }

    @Override

    public int getCount() {

        return title.length;

    }

    @Override

    public CharSequence getPageTitle(int position) {

        return title[position];

    }

}

TabFragment.java

public class TabFragment extends Fragment {

    int position;

    private TextView textView;

    public static Fragment getInstance(int position) {

        Bundle bundle = new Bundle();

        bundle.putInt("pos", position);

        TabFragment tabFragment = new TabFragment();

        tabFragment.setArguments(bundle);

        return tabFragment;

    }

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        position = getArguments().getInt("pos");

    }

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

                             Bundle savedInstanceState) {

        return inflater.inflate(R.layout.fragment_tab, container, false);

    }

    @Override

    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {

        super.onViewCreated(view, savedInstanceState);

        textView = (TextView) view.findViewById(R.id.textView);

        textView.setText("Fragment " + (position + 1));

    }

}

MainActivity

public class MainActivity extends AppCompatActivity {

    private Toolbar toolbar;

    private TabLayout tabLayout;

    private ViewPager viewPager;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        toolbar = (Toolbar) findViewById(R.id.toolbar);

        setSupportActionBar(toolbar);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        viewPager = (ViewPager) findViewById(R.id.viewpager);

        ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());

        viewPager.setAdapter(adapter);

        tabLayout = (TabLayout) findViewById(R.id.tabs);

        tabLayout.setupWithViewPager(viewPager);

    }

}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"/>

<manifest

    xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.spaceo.tablayoutdemo">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>

            </intent-filter>

        </activity>

    </application>

</manifest>

build.gradle

apply plugin: 'com.android.application'

android {

    compileSdkVersion 25

    buildToolsVersion "25.0.2"

    defaultConfig {

        applicationId "com.spaceo.tablayoutdemo"

        minSdkVersion 16

        targetSdkVersion 25

        versionCode 1

        versionName "1.0"

        

    }

    buildTypes {

        release {

            minifyEnabled false

            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

        }

    }

}

dependencies {

    compile fileTree(dir: 'libs', include: ['*.jar'])

    compile 'com.android.support:appcompat-v7:25.2.0'

    compile 'com.android.support:design:25.2.0'

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.v7.widget.Toolbar

            android:id="@+id/toolbar"

            android:layout_width="match_parent"

            android:layout_height="?attr/actionBarSize"

            android:background="?attr/colorPrimary"

            app:layout_scrollFlags="scroll|enterAlways"

            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

        <android.support.design.widget.TabLayout

            android:id="@+id/tabs"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            app:tabGravity="fill"

            app:tabMode="fixed"/>

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.view.ViewPager

        android:id="@+id/viewpager"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

</android.support.design.widget.CoordinatorLayout>

fragment_tab.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

              android:layout_width="match_parent"

              android:layout_height="match_parent"

              android:orientation="vertical">

    <TextView

        android:id="@+id/textView"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:gravity="center"

        android:padding="10dp"

        android:textSize="40sp"

        android:textStyle="bold"/>

</LinearLayout>

And done! 

How to resize Image in Android App

This example demonstrate about How to resize Image in Android App.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<? xml version= "1.0" encoding= "utf-8" ?>

<RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android"

   xmlns: tools = "http://schemas.android.com/tools"

   android :layout_width= "match_parent"

   android :layout_height= "match_parent"

   android :gravity= "center"

   tools :context= ".MainActivity" >

   <ImageView

      android :id= "@+id/ivImage"

      android :layout_width= "wrap_content"

      android :layout_height= "wrap_content"

      android :layout_centerHorizontal= "true"

      android :contentDescription= "@string/app_name"

      android :src= "@drawable/ic_launcher_foreground" />

   <LinearLayout

      android :layout_width= "match_parent"

      android :layout_height= "wrap_content"

      android :layout_below= "@+id/ivImage"

      android :layout_centerHorizontal= "true" >

      <Button

         android :layout_width= "0dp"

         android :layout_height= "wrap_content"

         android :layout_marginTop= "8dp"

         android :layout_weight= "1"

         android :onClick= "uploadImage"

         android :text= "Upload Image" />

      <Button

         android :layout_width= "0dp"

         android :layout_height= "wrap_content"

         android :layout_marginTop= "8dp"

         android :layout_weight= "1"

         android :onClick= "resizeImage"

         android :text= "Resize Image" />

   </LinearLayout>

</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   ImageView ivImage ;

   public static final int PICK_IMAGE = 1 ;

   Bitmap yourBitmap ;

   @Override

   protected void onCreate (Bundle savedInstanceState) {

      super .onCreate(savedInstanceState) ;

      setContentView(R.layout. activity_main ) ;

      ivImage = findViewById(R.id. ivImage ) ;

   }

   public void uploadImage (View view) {

      Intent intent = new Intent(Intent. ACTION_GET_CONTENT ) ;

      intent.setType( "image/*" ) ;

      startActivityForResult(intent , PICK_IMAGE ) ;

   }

   public void resizeImage (View view) {

      Bitmap resized = Bitmap. createScaledBitmap ( yourBitmap , 400 , 400 , true ) ;

      ivImage .setImageBitmap(resized) ;

   }

   @Override

   public void onActivityResult ( int requestCode , int resultCode , Intent data) {

      super .onActivityResult(requestCode , resultCode , data) ;

      if (requestCode == PICK_IMAGE && resultCode == Activity. RESULT_OK ) {

         if (data == null ) {

            //Display an error

            return;

         }

         try {

            Uri imageUri = data.getData() ;

            yourBitmap =

            MediaStore.Images.Media. getBitmap ( this .getContentResolver() , imageUri) ;

            ivImage .setImageBitmap( yourBitmap ) ;

         } catch (IOException e) {

            e.printStackTrace() ;

         }

      }

   }

}

Step 4 − Add the following code to androidManifest.xml

<? xml version= "1.0" encoding= "utf-8" ?>

<manifest xmlns: android = "http://schemas.android.com/apk/res/android"

   package= "app.tutorialspoint.com.sample" >

   <application

      android :allowBackup= "true"

      android :icon= "@mipmap/ic_launcher"

      android :label= "@string/app_name"

      android :roundIcon= "@mipmap/ic_launcher_round"

      android :supportsRtl= "true"

      android :theme= "@style/AppTheme" >

      <activity android :name= ".MainActivity" >

         <intent-filter>

            <action android :name= "android.intent.action.MAIN" />

            <category android :name= "android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

How to pass an image from one activity another activity in Android

This example demonstrates how to do I pass an image from one Activity in android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:padding="16dp"

   tools:context=".MainActivity">

   <Button

      android:id="@+id/btnSend"

      android:layout_width="match_parent"

      android:layout_height="wrap_content"

      android:layout_marginTop="40dp"

      android:onClick="SendImage"

      android:text="Send Image" />

   <ImageView

      android:id="@+id/imageView"

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:layout_below="@id/btnSend"

      android:layout_marginTop="10dp"

      android:src="@drawable/image" />

</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

   }

   public void SendImage(View view) {

      Intent intent = new Intent(MainActivity.this, SecondActivity.class);

      intent.putExtra("resId", R.drawable.image);

      startActivity(intent);

   }

}

Step 4 − Create an empty activity and add the following code:

Activity_second.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:padding="8dp"

   tools:context=".SecondActivity">

   <TextView

      android:id="@+id/textView"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_centerHorizontal="true"

      android:layout_marginTop="40dp"

      android:text="Second Activity"

      android:textSize="24sp"

      android:textStyle="bold"/>

   <ImageView

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:layout_below="@id/textView"

      android:layout_marginTop="5dp"

      android:id="@+id/imageView2"/>

</RelativeLayout>

SecondActivity.java

public class SecondActivity extends AppCompatActivity {

   ImageView imageView;

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_second);

      imageView = findViewById(R.id.imageView2);

      Bundle bundle = getIntent().getExtras();

      if (bundle != null) {

         int resId = bundle.getInt("resId");

         imageView.setImageResource(resId);

      }

   }

}

Step 5 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".SecondActivity"></activity>

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual How to code android device with your computer. To run the app from the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

How does one use Glide to download an image into a bitmap

This example demonstrates how do I does one Glide to download an image into a bitmap.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project

Add the following dependency in build.gradle: Module: app

implementation 'com.github.bumptech.glide:glide:4.9.0'

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   tools:context=".MainActivity">

   <ImageView

      android:id="@+id/imageView"

      android:layout_width="match_parent"

      android:layout_height="match_parent" />

</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   ImageView imageView;

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      imageView = findViewById(R.id.imageView);

      Glide.with(this).asBitmap().load("https://www.google.es/images/srpr/logo11w.png").into(new CustomTarget<Bitmap>() {

         @Override

         public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {

            imageView.setImageBitmap(resource);

         }

         @Override

         public void onLoadCleared(@Nullable Drawable placeholder) {

         }

      });

   }

}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <uses-permission android:name="android.permission.INTERNET"/>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

         <activity android:name=".MainActivity">

            <intent-filter>

               <action android:name="android.intent.action.MAIN" />

               <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

         </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

How to use Android Picasso Library to download images

 This example demonstrates how do I use the Android Picasso library to download images.

Step 1 − Create a new project in Android Studio, go to File ⇒New Project and fill all required details to create a new project.

Add the following dependency to the build gradle (Module: app)

implementation 'com.squareup.picasso:picasso:2.4.0'

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:padding="4dp"

   tools:context=".MainActivity">

   <ImageView

      android:id="@+id/imageView"

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:layout_above="@id/btnDownload"/>

   <Button

      android:id="@+id/btnDownload"

      android:layout_width="match_parent"

      android:layout_height="wrap_content"

      android:textAlignment="center"

      android:layout_alignParentBottom="true"

      android:text="Download Image"/>

</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   ImageView imageView;

   Button btnDownload;

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      imageView = findViewById(R.id.imageView);

      btnDownload = findViewById(R.id.btnDownload);

      btnDownload.setOnClickListener(new View.OnClickListener() {

         @Override

         public void onClick(View v) {

            Picasso.with(MainActivity.this)

               .load("https://images.pexels.com/photos/1212487/pexels-photo1212487.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260")

               .into(imageView);

         }

      });

   }

}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <uses-permission android:name="android.permission.INTERNET"/>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

         <activity android:name=".MainActivity">

            <intent-filter>

               <action android:name="android.intent.action.MAIN" />

               <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

         </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android code example device with your computer. To run the app from the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

How to pick an image from an image gallery on Android using Kotlin

This example demonstrates how to pick an image from an image gallery on Android using Kotlin.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

   android:layout_width="fill_parent"

   android:layout_height="fill_parent"

   android:orientation="vertical"

   android:padding="2dp">

   <ImageView

      android:id="@+id/imageView"

      android:layout_width="match_parent"

      android:layout_height="wrap_content"

      android:layout_weight="1" />

   <Button

      android:id="@+id/buttonLoadPicture"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_gravity="center"

      android:layout_weight="0"

      android:text="Load Picture" />

</LinearLayout>

Step 3 − Add the following code to src/MainActivity.kt

class MainActivity : AppCompatActivity() {

   lateinit var imageView: ImageView

   lateinit var button: Button

   private val pickImage = 100

   private var imageUri: Uri? = null

   override fun onCreate(savedInstanceState: Bundle?) {

      super.onCreate(savedInstanceState)

      setContentView(R.layout.activity_main)

      title = "KotlinApp"

      imageView = findViewById(R.id.imageView)

      button = findViewById(R.id.buttonLoadPicture)

      button.setOnClickListener {

         val gallery = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI)

         startActivityForResult(gallery, pickImage)

      }

   }

   override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

      super.onActivityResult(requestCode, resultCode, data)

      if (resultCode == RESULT_OK && requestCode == pickImage) {

         imageUri = data?.data

         imageView.setImageURI(imageUri)

      }

   }

}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.q11">

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual kotlin example device with your computer. To run the app from android studio, open one of your project's activity files and click the Run iconPlay from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen.

How to get a bitmap from Url in Android app

 This example demonstrates how do I get a bitmap from Url in android app.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:padding="8dp"

   android:orientation="vertical"

   tools:context=".MainActivity">

   <LinearLayout

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:orientation="vertical"

      android:layout_gravity="center">

      <ImageView

         android:layout_width="150dp"

         android:layout_height="150dp"

         android:layout_gravity="center"

         android:layout_margin="15dp"

         android:src="@drawable/image"/>

   </LinearLayout>

   <ImageView

      android:id="@+id/iMageView"

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:layout_gravity="center"

      android:layout_margin="20sp"/>

</LinearLayout>

Step 3 – Copy and paste an image (.png/.jpg/.jpeg) into res/drawable

Step 4 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   Bitmap bitmap;

   ImageView image;

   String urlImage = "https://thumbs.dreamstime.com/z/hands-holding-blue-earth-cloud-sky" + "-elements-imag-background-image-furnished-nasa-61052787.jpg";

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      image = findViewById(R.id.iMageView);

      new GetImageFromUrl(image).execute(urlImage);

   }

   public class GetImageFromUrl extends AsyncTask<String, Void, Bitmap>{

      ImageView imageView;

      public GetImageFromUrl(ImageView img){

         this.imageView = img;

      }

      @Override

      protected Bitmap doInBackground(String... url) {

         String stringUrl = url[0];

         bitmap = null;

         InputStream inputStream;

         try {

            inputStream = new java.net.URL(stringUrl).openStream();

            bitmap = BitmapFactory.decodeStream(inputStream);

         } catch (IOException e) {

            e.printStackTrace();

         }

         return bitmap;

      }

      @Override

      protected void onPostExecute(Bitmap bitmap){

         super.onPostExecute(bitmap);

         imageView.setImageBitmap(bitmap);

      }      

   }

}

Step 5 - Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <uses-permission android:name="android.permission.INTERNET"/>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run Play Icon  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

How to pick an image from image gallery in Android

This example demonstrates how do I pick an image from image gallery in android app

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

   xmlns:android="http://schemas.android.com/apk/res/android"

   android:orientation="vertical"

   android:layout_width="fill_parent"

   android:layout_height="fill_parent">

   <ImageView

      android:id="@+id/imageView"

      android:layout_width="fill_parent"

      android:layout_height="wrap_content"

      android:layout_weight="1"/>

   <Button

      android:id="@+id/buttonLoadPicture"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_weight="0"

      android:text="Load Picture"

      android:layout_gravity="center"/>

</LinearLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends Activity {

   ImageView imageView;

   Button button;

   private static final int PICK_IMAGE = 100;

   Uri imageUri;

   @Override

   public void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      imageView = (ImageView)findViewById(R.id.imageView);

      button = (Button)findViewById(R.id.buttonLoadPicture);

      button.setOnClickListener(new View.OnClickListener() {

         @Override

         public void onClick(View v) {

            openGallery();

         }

      });

   }

   private void openGallery() {

      Intent gallery = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);

      startActivityForResult(gallery, PICK_IMAGE);

   }

   @Override

   protected void onActivityResult(int requestCode, int resultCode, Intent data){

      super.onActivityResult(requestCode, resultCode, data);

      if (resultCode == RESULT_OK && requestCode == PICK_IMAGE){

         imageUri = data.getData();

         imageView.setImageURI(imageUri);

      }

   }

}

Step 4 − Add the following code to androidManifest.xm

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android example studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

How to download and save an image from a given URL in android

This example demonstrates how do I download and save an image from a given URL in android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout

   xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:app="http://schemas.android.com/apk/res-auto"

   android:id="@+id/coordinatorLayout"

   android:layout_width="match_parent"

   android:layout_height="match_parent">

   <Button

      android:id="@+id/btnDownload"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:text="Download Image"

      android:layout_margin="25dp"

      android:layout_gravity="top|center_horizontal" />

   <ImageView

      android:id="@+id/imageView"

      android:layout_width="match_parent"

      android:layout_height="200dp"

      android:scaleType="centerCrop"

      app:layout_anchor="@id/btnDownload"

      android:layout_gravity="bottom"

      app:layout_anchorGravity="bottom"

      android:layout_margin="10dp" />

</android.support.design.widget.CoordinatorLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   Context context;

   Activity activity;

   CoordinatorLayout coordinatorLayout;

   Button button;

   ProgressDialog mProgressDialog;

   ImageView mImageView;

   URL url;

   AsyncTask mMyTask;

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      context = getApplicationContext();

      activity = MainActivity.this;

      coordinatorLayout = findViewById(R.id.coordinatorLayout);

      button = findViewById(R.id.btnDownload);

      mImageView = findViewById(R.id.imageView);

      mProgressDialog = new ProgressDialog(activity);

      mProgressDialog.setIndeterminate(true);

      mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

      mProgressDialog.setTitle("AsyncTask");

      mProgressDialog.setMessage("Please wait, we are downloading your image file...");

      button.setOnClickListener(new View.OnClickListener() {

         @Override

         public void onClick(View view) {

            mMyTask = new DownloadTask().execute(stringToURL());

         }

      });

   }

   private class DownloadTask extends AsyncTask<URL,Void,Bitmap>{

      protected void onPreExecute(){

         mProgressDialog.show();

      }

      protected Bitmap doInBackground(URL...urls){

         URL url = urls[0];

         HttpURLConnection connection = null;

         try{

            connection = (HttpURLConnection) url.openConnection();

            connection.connect();

            InputStream inputStream = connection.getInputStream();

            BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);

            return BitmapFactory.decodeStream(bufferedInputStream);

         }catch(IOException e){

            e.printStackTrace();

         }

         return null;

      }

      // When all async task done

      protected void onPostExecute(Bitmap result){

         // Hide the progress dialog

         mProgressDialog.dismiss();

         if(result!=null){

            mImageView.setImageBitmap(result);

         } else {

            // Notify user that an error occurred while downloading image

            Toast.makeText(MainActivity.this, "Error", Toast.LENGTH_SHORT).show();

         }

      }

   }

   protected URL stringToURL() {

      try {

         url = new URL("https://wallpapersite.com/images/pages/pic_w/6408.jpg");

         return url;

      } catch (MalformedURLException e) {

         e.printStackTrace();

      }

      return null;

   }

}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

   <uses-permission android:name="android.permission.INTERNET"/>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android example device with your computer. To run the app from android studio, open one of your project's activity files and click Run Play Icon icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen 

How to download image from url in Android

This example demonstrates how do I download image from url in android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   android:layout_width="match_parent"

   android:layout_height="match_parent" >

   <ImageView

      android:id="@+id/image"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_centerHorizontal="true"

      android:layout_centerVertical="true">

   </ImageView>

   <Button

      android:id="@+id/button"

      android:layout_width="fill_parent"

      android:layout_height="wrap_content"

      android:layout_below="@+id/image"

      android:layout_centerHorizontal="true"

      android:layout_centerVertical="true"

      android:text="@string/button" />

</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   String url = "https://images.pexels.com/photos/1226302/pexels-photo1226302.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500";

   ImageView image;

   Button button;

   ProgressDialog mProgressDialog;

   @Override

   public void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      image = (ImageView) findViewById(R.id.image);

      button = findViewById(R.id.button);

      button.setOnClickListener(new View.OnClickListener() {

         @Override

         public void onClick(View v) {

            new DownloadImage().execute(url);

         }

      });

   }

   private class DownloadImage extends AsyncTask {

      @Override

      protected void onPreExecute() {

         super.onPreExecute();

         mProgressDialog = new ProgressDialog(MainActivity.this);

         mProgressDialog.setTitle("Download Image Tutorial");

         mProgressDialog.setMessage("Loading...");

         mProgressDialog.setIndeterminate(false);

         mProgressDialog.show();

      }

      @Override

      protected Bitmap doInBackground(String... URL) {

         String imageURL = URL[0];

         Bitmap bitmap = null;

         try {

            // Download Image from URL

            InputStream input = new java.net.URL(imageURL).openStream();

            // Decode Bitmap

            bitmap = BitmapFactory.decodeStream(input);

         } catch (Exception e) {

            e.printStackTrace();

         }

         return bitmap;

      }

      @Override

      protected void onPostExecute(Bitmap result) {

         // Set the bitmap into ImageView

         image.setImageBitmap(result);

         // Close progressdialog

         mProgressDialog.dismiss();

      }

   }

}

Step 4 − Open resources -> string.xml and add the following code −

<resources>

   <string name="app_name">Sample</string>

   <string name="menu_settings">Settings</string>

   <string name="button">Download Image</string>

</resources>

Step 5 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">

   <uses-permission android:name="android.permission.INTERNET" ></uses-permission>

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

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How to change a TextView's style at runtime in Android using Kotlin

How to change a TextView's style at runtime in Android using Kotlin

This example demonstrates how to change a TextView's style at runtime in Android using Kotlin.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   tools:context=".MainActivity">

   <TextView

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_centerHorizontal="true"

      android:layout_marginTop="70dp"

      android:background="#008080"

      android:padding="5dp"

      android:text="TutorialsPoint"

      android:textColor="#fff"

      android:textSize="24sp"

      android:textStyle="bold" />

   <TextView

      android:id="@+id/textView"

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_centerInParent="true"

      android:text="Have a nice day!"

      android:textColor="@android:color/background_dark"

      android:textSize="36sp"

      android:textStyle="bold" />

</RelativeLayout>

Step 3 − Add the following code in res/values/styles.xml

<resources>

   <style name="boldText">

      <item name="android:textStyle">bold|italic</item>

      <item name="android:textColor">#FFFFFF</item>

   </style>

   <style name="normalText">

      <item name="android:textStyle">normal</item>

      <item name="android:textColor">#C0C0C0</item>

   </style>

</resources>

Step 4 − Add the following code in res/values/colors.xml

<resources>

   <color name="highlightedTextViewColor">@android:color/holo_green_light</color>

   <color name="normalTextViewColor">@android:color/holo_red_dark</color>

</resources>

Step 5 − Add the following code to src/MainActivity.kt

import android.os.Build

import android.os.Bundle

import android.widget.TextView

import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {

   lateinit var textView: TextView

   override fun onCreate(savedInstanceState: Bundle?) {

      super.onCreate(savedInstanceState)

      setContentView(R.layout.activity_main)

      title = "KotlinApp"

      textView = findViewById(R.id.textView)

      textView.setOnClickListener {

         if (Build.VERSION.SDK_INT < 23) {

            textView.setTextAppearance(applicationContext, R.style.boldText)

         }

         else {

            textView.setTextAppearance(R.style.boldText)

         }

         textView.setBackgroundResource(R.color.highlightedTextViewColor)

      }

   }

}

Step 6 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

   package="com.example.q11">

   <application

      android:allowBackup="true"

      android:icon="@mipmap/ic_launcher"

      android:label="@string/app_name"

      android:roundIcon="@mipmap/ic_launcher_round"

      android:supportsRtl="true"

      android:theme="@style/AppTheme">

      <activity android:name=".MainActivity">

         <intent-filter>

            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />

         </intent-filter>

      </activity>

   </application>

</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run icon Play from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen.

IGI Origins 2021 NEW Version For Low End PC

 IGI Remastered 2021 NEW Version For Low End PC

 Download Now

How To Download files from this website? just click here.

About this game

Ghost Interactive  I.G.I. is a tactical first-person shooter video game developed by Inner loop Studios and released in December 2018 by Ghost Interactive Team.

Project I.G.I. (released in North America as Project I.G.I.: I’m Going In) is a tactical first-person shooter video game developed by Innerloop Studios and released in December 2000 by Eidos Interactive. Upon release, the game received mixed reviews due to a number of shortcomings including poorly programmed A.I., lack of a mid-game save option, and the lack of multiplayer features. However, it was praised for its sound design and graphics, thanks in part to its use of a proprietary game engine that was previously used in Innerloop’s Joint Strike Fighter.

As we can say this game is similar like IGI IF IGI 1 Remaster Version Will Released it will same as Ghost Interactive The protagonist.

Game Story & Gameplay

knowledge of the stolen Warhead. While Jach Priboi is taken away in a helicopter by Jones, the chopper is shot down by Ekk. The Russians take Priboi, as well as Jones’ equipment. Jones then has to clear the border and find his equipment. He then hijacks the train carrying Priboi and takes him in for interrogation. Learning about the involvement of Ekk, he sets off to catch her and find the nuclear weapon. Ekk escapes on her first meeting with Jones, but Jones kills her after finding her second hideout as well In this game you will get first mission of IGI 1 with really awesome graphics.

Maps of this game

WE GET ONLY TWO MAPS IN THIS GAME

1. TRAINYEARD

2. AFGHAN AIRBASE

TRAINYEARD IS SAME MAP FROM IGI 1.

Multiplayer

No we can’t play multiplayer with our friends but soon developer a working on multiplayer mode we will get soon a new update on this came.

Features

The game graphics are too awesome You will get the 4K texture quality graphics and motion blur graphics.

The zipped file size of Project IGI full game setup is around 500 MB. In order to run this game smoothly, your PC should have about 2GB of free.

Tutorial Video to Download+Install:

Download Links

Google Drive

Media Fire

                 How To Download files from this website? just click here.

NOTICE: This game is already pre-installed for you, meaning you don’t have to install it. If you get any missing DLL errors, make sure to look for a _Redist or _CommonRedist folder and install DirectX, vcredist, and all other programs in that folder. You need these programs for the game to run. Look for a ‘HOW TO RUN GAME!!.txt’ file for more help. Also, be sure to right-click the exe and always select “Run as administrator” if you’re having problems saving the game. Always disable your antivirus before extracting the game to prevent it from deleting the crack files.

         

System Requirements

• OS: Windows XP w/SP1 or newer
• Processor: Intel Pentium 4 3+ Ghz or AMD Athlon64 3500+
• Memory: 2 GB for Windows XP or 2 GB for Windows Vista
• Hard Drive: 2.2 GB of free space
• Graphics: nVidia GeForce 7600, ATI Radeon X1600 (Shader Model 3.0 Required)
• Sound: Direct X 9.0c compatible sound card
• DirectX®: DirectX 9.0c August 2009 Edition or newer

How to add Custom Spinner in android

How to add Custom Spinner in android

Spinner in Android is a widget that is used to select an item from a list of items. When the user tap on a spinner a drop-down menu is visible to the user. In this article, we will learn how to add custom spinner in the app. If you want to know more about spinner in detail then click on this link.

Create a new file algorithm_spinner.xml and add the following code. Each item in spinner will have this layout, an image view and a textview.

algorithm_spinner.xml

<?xml version="1.0" encoding="utf-8"?> 

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"> 

  

    <ImageView

        android:id="@+id/image_view"

        android:layout_width="100dp"

        android:layout_height="100dp"

        android:src="@drawable/gfg" /> 

  

    <TextView

        android:id="@+id/text_view"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignBottom="@+id/image_view"

        android:layout_alignParentTop="true"

        android:layout_margin="20dp"

        android:layout_toEndOf="@+id/image_view"

        android:gravity="center"

        android:text="Quick Sort"

        android:textColor="@android:color/black"

        android:textSize="20sp" /> 

  

</RelativeLayout> 

Create a new file AlgorithmItem.java and add the below following code. This is the model class which is used to get the algorithm name when the user clicks on any item. Here we define a constructor and a getAlgorithmName method which returns the algorithm name of the object.

AlgorithmItem.java

public class AlgorithmItem { 

    private String algorithmName; 

  

    public AlgorithmItem(String countryName) 

    { 

        algorithmName = countryName; 

    } 

  

    public String getAlgorithmName() 

    { 

        return algorithmName; 

    } 

} 

Create a new file AlgorithmAdapter.java and add the following code. Here we define our own Adapter class. It maps the item with its view, providing access to the item`s data in the list of spinner.

public class AlgorithmAdapter extends ArrayAdapter<AlgorithmItem> { 

  

    public AlgorithmAdapter(Context context, 

                            ArrayList<AlgorithmItem> algorithmList) 

    { 

        super(context, 0, algorithmList); 

    } 

  

    @NonNull

    @Override

    public View getView(int position, @Nullable

                                      View convertView, @NonNull ViewGroup parent) 

    { 

        return initView(position, convertView, parent); 

    } 

  

    @Override

    public View getDropDownView(int position, @Nullable

                                              View convertView, @NonNull ViewGroup parent) 

    { 

        return initView(position, convertView, parent); 

    } 

  

    private View initView(int position, View convertView, 

                          ViewGroup parent) 

    { 

        // It is used to set our custom view. 

        if (convertView == null) { 

            convertView = LayoutInflater.from(getContext()).inflate(R.layout.algorithm_spinner, parent, false); 

        } 

  

        TextView textViewName = convertView.findViewById(R.id.text_view); 

        AlgorithmItem currentItem = getItem(position); 

  

        // It is used the name to the TextView when the 

        // current item is not null. 

        if (currentItem != null) { 

            textViewName.setText(currentItem.getAlgorithmName()); 

        } 

        return convertView; 

    } 

} 

Add the following code in activity_main.xml file. Here we add our spinner on the layout. This will add a textview and a spinner.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity"> 

  

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Learn Algorithms"

        android:textStyle="bold"

        android:textSize="18sp"

        android:layout_above="@+id/spinner_algorithm"

        android:layout_marginStart="10dp"

        android:layout_marginBottom="25dp"

        /> 

  

    <Spinner

        android:layout_margin="5dp"

        android:id="@+id/spinner_algorithm"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerInParent="true"

        android:layout_marginTop="18dp" /> 

  

</RelativeLayout> 

Now add the following code in the MainActivity.java file. Here AlgorithmAdapter class object is made and it acts as an adapter for the spinner and add onItemSelectedListner() to our spinner. When the user tap on any item of the spinner, it gets invoked. It shows a toast with the name of the item that user selected from the list.

MainActivity.java

public class MainActivity extends AppCompatActivity { 

  

    ArrayList<AlgorithmItem> algorithmItems; 

    AlgorithmAdapter adapter; 

  

    @Override

    protected void onCreate(Bundle savedInstanceState) 

    { 

        super.onCreate(savedInstanceState); 

        setContentView(R.layout.activity_main); 

  

        initList(); 

        Spinner spinner = findViewById(R.id.spinner_algorithm); 

  

        // we pass our item list and context to our Adapter. 

        adapter = new AlgorithmAdapter(this, algorithmItems); 

        spinner.setAdapter(adapter); 

  

        spinner.setOnItemSelectedListener( 

            new AdapterView.OnItemSelectedListener() { 

                @Override

                public void onItemSelected(AdapterView<?> parent, 

                                           View view, int position, long id) 

                { 

  

                    // It returns the clicked item. 

                    AlgorithmItem clickedItem = (AlgorithmItem) 

                                                    parent.getItemAtPosition(position); 

                    String name = clickedItem.getAlgorithmName(); 

                    Toast.makeText(MainActivity.this, name + " selected", Toast.LENGTH_SHORT).show(); 

                } 

                @Override

                public void onNothingSelected(AdapterView<?> parent) 

                { 

                } 

            }); 

    } 

  

    // It is used to set the algorithm names to our array list. 

    private void initList() 

    { 

        algorithmItems = new ArrayList<>(); 

        algorithmItems.add(new AlgorithmItem("Quick Sort")); 

        algorithmItems.add(new AlgorithmItem("Merge Sort")); 

        algorithmItems.add(new AlgorithmItem("Heap Sort")); 

        algorithmItems.add(new AlgorithmItem("Prims Algorithm")); 

        algorithmItems.add(new AlgorithmItem("Kruskal Algorithm")); 

        algorithmItems.add(new AlgorithmItem("Rabin Karp")); 

        algorithmItems.add(new AlgorithmItem("Binary Search")); 

    } 

}