How do I start my app on startup?

Question

I tried using the sample code in this link but it seems outdated and it did not work. So what changes do I have to make and to what files to have my app start automatically

Answer 1

This is how to make an activity start running after android device reboot:

Insert this code in your AndroidManifest.xml file, within the element (not within the element):

Then create a new class yourActivityRunOnStartup (matching the android:name specified for the element in the manifest):

package yourpackage;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class yourActivityRunOnStartup extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            Intent i = new Intent(context, MainActivity.class);
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(i);
        }
    }

}

Note: The call i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); is important because the activity is launched from a context outside the activity. Without this, the activity will not start.

Also, the values android:enabled, android:exported and android:permission in the tag do not seem mandatory. The app receives the event without these values. See the example here.