How to send data between one application to other application in android?

Question

i've tried to sending data between App1 to App2 via Intent in Android

i used this code but i couldn't resolve my problem.

App1 MainActivity :

        Intent i2 = new Intent("com.appstore.MainActivity");
        i2.setPackage("com.appstore");//the destination packageName
        i2.putExtra("Id", "100");
        startActivity(i2);

App2 MainActivity :

Bundle data = getIntent().getExtras;
if(data!=null){
    String myString = b.getString("Id");

}

Manfiest App2 MainActivity:

   <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="image/*" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="text/plain" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND_MULTIPLE" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="image/*" />
            </intent-filter>

        </activity>

Answer 1

Final code:

App 1 :

        Intent intent = new Intent();
        intent.setClassName("com.appstore", "com.appstore.MyBroadcastReceiver");
        intent.setAction("com.appstore.MyBroadcastReceiver");
        intent.putExtra("KeyName","code1id");
        sendBroadcast(intent);

App 2:

Reciver:
public class MyBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context, "Data Received from External App", Toast.LENGTH_SHORT).show();

    }
}

Manifest :

        <receiver
            android:name=".MyBroadcastReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="first_app_packagename" />
            </intent-filter>
        </receiver>

MainActivity :

  MyBroadcastReceiver mReceiver = new MyBroadcastReceiver();
        registerReceiver(mReceiver,
                new IntentFilter("first_app_packagename"));