How to put media controller button on notification bar?

I am creating a music player application. I want to show the media controller on notification bar while my application is running in background. It looks like Google player.

enter image description here

How to do this?

Here is the example above done correctly to the new API

In your main, when you want to start a notification instantiate the class:

NotificationPanel nPanel = new NotificationPanel(MyActivity);

And when you want to cancel notification: (as it is an onGoing notification)

nPanel.notificationCancel();

Then create the class for the notification caller:

public class NotificationPanel {

private Context parent;
private NotificationManager nManager;
private NotificationCompat.Builder nBuilder;
private RemoteViews remoteView;

public NotificationPanel(Context parent) {
    // TODO Auto-generated constructor stub
    this.parent = parent;
    nBuilder = new NotificationCompat.Builder(parent)
    .setContentTitle("Parking Meter")
    .setSmallIcon(R.drawable.ic_launcher)
    .setOngoing(true);

    remoteView = new RemoteViews(parent.getPackageName(), R.layout.notificationview);

    //set the button listeners
    setListeners(remoteView);
    nBuilder.setContent(remoteView);

    nManager = (NotificationManager) parent.getSystemService(Context.NOTIFICATION_SERVICE);
    nManager.notify(2, nBuilder.build());
}

public void setListeners(RemoteViews view){
    //listener 1
    Intent volume = new Intent(parent,NotificationReturnSlot.class);
    volume.putExtra("DO", "volume");
    PendingIntent btn1 = PendingIntent.getActivity(parent, 0, volume, 0);
    view.setOnClickPendingIntent(R.id.btn1, btn1);

    //listener 2
    Intent stop = new Intent(parent, NotificationReturnSlot.class);
    stop.putExtra("DO", "stop");
    PendingIntent btn2 = PendingIntent.getActivity(parent, 1, stop, 0);
    view.setOnClickPendingIntent(R.id.btn2, btn2);
}

public void notificationCancel() {
    nManager.cancel(2);
}
}

Then add the return class that accept the pending intent:

public class NotificationReturnSlot extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    String action = (String) getIntent().getExtras().get("DO");
    if (action.equals("volume")) {
        Log.i("NotificationReturnSlot", "volume");
        //Your code
     } else if (action.equals("stopNotification")) {
         //Your code
        Log.i("NotificationReturnSlot", "stopNotification");
     }
     finish();
    }
}

Then you need to make a XML file for the button. This is a simple one:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >

<Button
    android:id="@+id/btn1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    android:text="volume" />

<Button
    android:id="@+id/btn2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    android:text="Stop" />

<TextView
    android:id="@+id/message"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/msglbl" />

Last and not least, the Manifest file:

   <activity android:name=".NotificationReturnSlot"
        android:launchMode="singleTask"
        android:taskAffinity=""
        android:excludeFromRecents="true"/>

For getting media player controller in your app simply follow this:

Call this method in your MainActivity

public void showNotification(View view){
        new MyNotification(this);
        finish();
    }

Create a new MynotificationClass

public class MyNotification extends Notification {

private Context ctx;
private NotificationManager mNotificationManager;

@SuppressLint("NewApi")
public MyNotification(Context ctx){
    super();
    this.ctx=ctx;
    String ns = Context.NOTIFICATION_SERVICE;
    mNotificationManager = (NotificationManager) ctx.getSystemService(ns);
    CharSequence tickerText = "Shortcuts";
    long when = System.currentTimeMillis();
    Notification.Builder builder = new Notification.Builder(ctx);
    @SuppressWarnings("deprecation")
    Notification notification=builder.getNotification();
    notification.when=when;
    notification.tickerText=tickerText;
    notification.icon=R.drawable.ic_launcher;

    RemoteViews contentView=new RemoteViews(ctx.getPackageName(), R.layout.messageview);

    //set the button listeners
    setListeners(contentView);

    notification.contentView = contentView;
    notification.flags |= Notification.FLAG_ONGOING_EVENT;
    CharSequence contentTitle = "From Shortcuts";
    mNotificationManager.notify(548853, notification);
}

public void setListeners(RemoteViews view){
    //radio listener
    Intent radio=new Intent(ctx,HelperActivity.class);
    radio.putExtra("DO", "radio");
    PendingIntent pRadio = PendingIntent.getActivity(ctx, 0, radio, 0);
    view.setOnClickPendingIntent(R.id.radio, pRadio);

    //volume listener
    Intent volume=new Intent(ctx, HelperActivity.class);
    volume.putExtra("DO", "volume");
    PendingIntent pVolume = PendingIntent.getActivity(ctx, 1, volume, 0);
    view.setOnClickPendingIntent(R.id.volume, pVolume);

    //reboot listener
    Intent reboot=new Intent(ctx, HelperActivity.class);
    reboot.putExtra("DO", "reboot");
    PendingIntent pReboot = PendingIntent.getActivity(ctx, 5, reboot, 0);
    view.setOnClickPendingIntent(R.id.reboot, pReboot);

    //top listener
    Intent top=new Intent(ctx, HelperActivity.class);
    top.putExtra("DO", "top");
    PendingIntent pTop = PendingIntent.getActivity(ctx, 3, top, 0);
    view.setOnClickPendingIntent(R.id.top, pTop);*/

    //app listener
    Intent app=new Intent(ctx, com.example.demo.HelperActivity.class);
    app.putExtra("DO", "app");
    PendingIntent pApp = PendingIntent.getActivity(ctx, 4, app, 0);
    view.setOnClickPendingIntent(R.id.btn1, pApp);
}

}

Create a HelperActivity class

public class HelperActivity extends Activity {

private HelperActivity ctx;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    ctx = this;
    String action = (String) getIntent().getExtras().get("DO");
    if (action.equals("radio")) {
        //Your code
    } else if (action.equals("volume")) {
        //Your code
    } else if (action.equals("reboot")) {
        //Your code
    } else if (action.equals("top")) {
        //Your code
    } else if (action.equals("app")) {
        //Your code
    }

    if (!action.equals("reboot"))
        finish();
}

@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
}
}

XML layout for Notificationlayout.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="fill_parent"
android:layout_height="fill_parent" >

<TextView
    android:id="@+id/msglbl"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="test" />

<TextView
    android:id="@+id/message"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/msglbl" />

<Button
    android:id="@+id/btn1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="play" android:layout_margin="10dp"/>

</RelativeLayout>

How to put media controller button on notification bar?

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