How to relaunch app that listens to BOOT_COMPLETED

Question

My app listens to BOOT_COMPLETED to start.

<receiver android:name=".BootReceiver">
     <intent-filter>
     <action android:name="android.intent.action.BOOT_COMPLETED" />         
</receiver>

But if my app crashes, how could I get it to automatically restart?

BOOT_COMPLETED is not a sticky intent.

Answer 1

To get Answer of your question is very simple. In that case you need to use Thread.setDefaultUncaughtExceptionHandler(). It will always enter in uncaughtException() in case your application crashed.For Check Full Tutorial Here

public class YourApplication extends Application {

    private static Context mContext;

    public static YourApplication instace;

    @Override
    public void onCreate() {
        super.onCreate();
        mContext = getApplicationContext();
        instace = this;
    }

    @Override
    public Context getApplicationContext() {
        return super.getApplicationContext();
    }

    public static YourApplication getIntance() {
        return instace;
    }
}

DefaultExceptionHandler.java

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.lang.Thread.UncaughtExceptionHandler;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Environment;
import android.util.Log;

/**
 * This custom class is used to handle exception.
 *
 * @author Chintan Rathod (http://www.chintanrathod.com)
 */
public class DefaultExceptionHandler implements UncaughtExceptionHandler {

    private UncaughtExceptionHandler defaultUEH;
    Activity activity;

    public DefaultExceptionHandler(Activity activity) {
        this.activity = activity;
    }

    @Override
    public void uncaughtException(Thread thread, Throwable ex) {

        try {

            Intent intent = new Intent(activity, RelaunchActivity.class);

            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
                    | Intent.FLAG_ACTIVITY_CLEAR_TASK
                    | Intent.FLAG_ACTIVITY_NEW_TASK);

            PendingIntent pendingIntent = PendingIntent.getActivity(
                    YourApplication.getInstance().getBaseContext(), 0, intent, intent.getFlags());

                        //Following code will restart your application after 2 seconds
            AlarmManager mgr = (AlarmManager) YourApplication.getInstance().getBaseContext()
                    .getSystemService(Context.ALARM_SERVICE);
            mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 1000,
                    pendingIntent);

                        //This will finish your activity manually
            activity.finish();

                        //This will stop your application and take out from it.
            System.exit(2);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}