How to make an app to run automatically on startup with delay?

Question

I made my app on Stratup with this permission

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

and adding this to my AndroidManifast.xml

        <receiver android:enabled="true" android:name=".BootUpReceiver" android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
        </receiver>

And this in my java codes:

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

public class BootUpReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Intent i = new Intent(context, Main.class);
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
    }

}

When app starts on startup, it crashes and when I strat it again it works carefully. I don't know what its cause is. So I decided to start it with some delay to solve this problem.I want your help to add delay.

Answer 1

I had a similar requirement to start a service after system boot with a delay. I added the delay to the receiver as below. Rest of your code looks fine.

public void onReceive(final Context context, Intent intent) {

    // We can't wait on the main thread as it would be blocked if we wait for too long
    new Thread(new Runnable() {

        @Override
        public void run() {
            try {
                // Lets wait for 10 seconds
                Thread.sleep(10 * 1000);
            } catch (InterruptedException e) {
                Log.e(TAG, e.getMessage());
            }

            // Start your application here
        }
    }).start();
}

Here I have started a new Thread with a 10 second delay that would start the application or service after the delay.

Reference link: https://github.com/midhunhk/message-counter/blob/master/v2/MessageCounter/src/com/ae/apps/messagecounter/receivers/BootCompletedReceiver.java