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How to create different graphs in Android

A series of destinations can be grouped into a nested graph within a parent navigation graph called the root graph. Nested graphs are useful to organize and reuse sections of your app’s UI, such as a self-contained login flow.

The nested graph encapsulates its destinations. As with a root graph, a nested graph must have a destination identified as the start destination. Destinations outside of the nested graph, How to create different graphs in Android such as those on the root graph, access the nested graph only through its start destination.

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

Step 2: Add the following dependency in the build.gradle (Module: app)

implementation 'com.jjoe64:graphview:4.2.1'

Step 3: 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:orientation="vertical"

   android:padding="16sp"

   tools:context=".MainActivity">

   <com.jjoe64.graphview.GraphView

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:id="@+id/graph" />

</LinearLayout>

Step 4: 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);

      GraphView graph = findViewById(R.id.graph);

      LineGraphSeries<DataPoint> series = new LineGraphSeries<>(new DataPoint[] {

         new DataPoint(0, 1),

         new DataPoint(1, 5),

         new DataPoint(2, 3),

         new DataPoint(3, 2),

         new DataPoint(4, 6)

      });

      graph.addSeries(series);

   }

}

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">

   <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>

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