Cannot Resolve Method setLatestEventInfo

Question

I am working on Notifications and I have to use setLatestEventInfo. However, Android Studio shows the following error message:

cannot re

Answer 1

According to : https://developer.android.com/sdk/api_diff/23/changes/android.app.Notification.html

This method was removed in M (api 23). So if your compile SDK version is set to api 23+ you'll see this issue.

Answer 2

Well below is a simple example of working with Notifications, go through it, hope it helps!

MainActivity.java

public class MainActivity extends ActionBarActivity {

    Button btnShow, btnClear;
    NotificationManager manager;
    Notification myNotication;

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

        initialise();

        manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        btnShow.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                //API level 11
                Intent intent = new Intent("com.rj.notitfications.SECACTIVITY");

                PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 1, intent, 0);

                Notification.Builder builder = new Notification.Builder(MainActivity.this);

                builder.setAutoCancel(false);
                builder.setTicker("this is ticker text");
                builder.setContentTitle("WhatsApp Notification");               
                builder.setContentText("You have a new message");
                builder.setSmallIcon(R.drawable.ic_launcher);
                builder.setContentIntent(pendingIntent);
                builder.setOngoing(true);
                builder.setSubText("This is subtext...");   //API level 16
                builder.setNumber(100);
                builder.build();

                myNotication = builder.getNotification();
                manager.notify(11, myNotication);

                /*
                //API level 8
                Notification myNotification8 = new Notification(R.drawable.ic_launcher, "this is ticker text 8", System.currentTimeMillis());

                Intent intent2 = new Intent(MainActivity.this, SecActivity.class);
                PendingIntent pendingIntent2 = PendingIntent.getActivity(getApplicationContext(), 2, intent2, 0);
                myNotification8.setLatestEventInfo(getApplicationContext(), "API level 8", "this is api 8 msg", pendingIntent2);
                manager.notify(11, myNotification8);
                */

            }
        });

        btnClear.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                manager.cancel(11);
            }
        });
    }

    private void initialise() {
        btnShow = (Button) findViewById(R.id.btnShowNotification);
        btnClear = (Button) findViewById(R.id.btnClearNotification);        
    }
}

activity_main.xml

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

    <Button
        android:id="@+id/btnShowNotification"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show Notification" />

    <Button
        android:id="@+id/btnClearNotification"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Clear Notification" />

</LinearLayout>

And the activity that will be opened on click of Notification,

public class SecActivity extends Activity {

}

Answer 3

Go to project -> properties and set android-target 21

Answer 4

You write you have to use setLatestEventInfo. Does it mean you are ready to have your app not compatible with more recent Android versions? I strongly suggest you to use the support library v4 that contains the NotificationCompat class for app using API 4 and over.

If you really do not want to use the support library (even with Proguard optimization, using NotificationCompat will add a good 100Ko on the final app), an other way is to use reflection. If you deploy your app on an Android version that still has the deprecated setLatestEventInfo, first of all you should check if you are in such an environment, and then you use reflection to access the method.

This way, Android Studio or the compiler will not complain, since the method is accessed at runtime, and not at compile time. For instance :

Notification notification = null;

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
    notification = new Notification();
    notification.icon = R.mipmap.ic_launcher;
    try {
        Method deprecatedMethod = notification.getClass().getMethod("setLatestEventInfo", Context.class, CharSequence.class, CharSequence.class, PendingIntent.class);
        deprecatedMethod.invoke(notification, context, contentTitle, null, pendingIntent);
    } catch (NoSuchMethodException | IllegalAccessException | IllegalArgumentException
            | InvocationTargetException e) {
        Log.w(TAG, "Method not found", e);
    }
} else {
    // Use new API
    Notification.Builder builder = new Notification.Builder(context)
            .setContentIntent(pendingIntent)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle(contentTitle);
    notification = builder.build();
}