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How to create a custom AlertDialog in Android

Sometimes in AlertDialog, there is need to get input from the user or customize according to our requirements. So we create custom AlertDialogs. This post will show how to customize the AlertDialogs and take the input from it.

Step 1: Create a XML file: custom_layout.xml. Add the below code in custom_layout.xml. This code defines the alertdialog box dimensions and add a edittext in it.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:layout_width="match_parent"
android:layout_height="match_parent">

<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>

Step 2: Add a button in activity_main.xml. The button when clicked will show the AlertDialog box.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:id="@+id/root"
android:orientation="vertical"
tools:context=".MainActivity">

<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="showAlertDialogButtonClicked"
android:text="Show Dialog"
/>
</LinearLayout>

Step 3:

Add custom_layout.xml in that activity in which you want to show custom alert dialog here it is added in MainActivity.java.

public class MainActivity
extends AppCompatActivity {

@Override
protected void onCreate(
Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

public void showAlertDialogButtonClicked(View view)
{

// Create an alert builder
AlertDialog.Builder builder
= new AlertDialog.Builder(this);
builder.setTitle("Name");

// set the custom layout
final View customLayout
= getLayoutInflater()
.inflate(
R.layout.custom_layout,
null);
builder.setView(customLayout);

// add a button
builder
.setPositiveButton(
"OK",
new DialogInterface.OnClickListener() {

@Override
public void onClick(
DialogInterface dialog,
int which)
{

// send data from the
// AlertDialog to the Activity
EditText editText
= customLayout
.findViewById(
R.id.editText);
sendDialogDataToActivity(
editText
.getText()
.toString());
}
});

// create and show
// the alert dialog
AlertDialog dialog
= builder.create();
dialog.show();
}

// Do something with the data
// coming from the AlertDialog
private void sendDialogDataToActivity(String data)
{
Toast.makeText(this,
data,
Toast.LENGTH_SHORT)
.show();
}
}

Output:

That's the articleHow to create a custom AlertDialog in Android

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How to create a custom AlertDialog in Android

How to create a custom AlertDialog in Android