Start Activity inside onReceive BroadcastReceiver

I want to start an activity in my onReceive() method.

package com.splashscreenactivity;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.widget.Toast;

public class SMSReceiver extends BroadcastReceiver {

	public static String trigger_message = "";

	@Override
	public void onReceive(Context context, Intent intent) {
		// ---get the SMS message passed in---
		Bundle bundle = intent.getExtras();
		SmsMessage[] msgs = null;
		String str = "";
		if (bundle != null) {
			// ---retrieve the SMS message received---
			Object[] pdus = (Object[]) bundle.get("pdus");
			msgs = new SmsMessage[pdus.length];
			for (int i = 0; i < msgs.length; i++) {
				msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
				str += "SMS from " + msgs[i].getOriginatingAddress();
				str += " :";
				trigger_message = msgs[i].getMessageBody().toString();
				str += trigger_message;
				str += "\n";
			}
			// ---display the new SMS message---
			Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
			if (trigger_message.equals("dx")) {
				Toast.makeText(context, "I am triggered", Toast.LENGTH_LONG)
						.show();
				// /////////////////////////
				// i want to start here
				// ////////////////////////
				// MainScreenActivity.trigger="Now";
				// Intent i = new Intent(context,GPS.class);
				// i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
				// context.startActivity(i);
			} else {
				Toast.makeText(context, "I am not triggered,  Bbyz!!!",
						Toast.LENGTH_LONG).show();
			}
		}
	}
}

here is GPS.class

package com.splashscreenactivity;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.widget.TextView;
import android.widget.Toast;

public class GPS extends Activity implements LocationListener {

	TextView latitude, logitude;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.gps);
		LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
		lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f,
				this);
		Toast.makeText(this, "i m started", Toast.LENGTH_LONG);
		// latitude = (TextView)findViewById(R.id.txtLat);
		// logitude = (TextView)findViewById(R.id.txtLongi);
		// latitude.setText("Loading...");
		// logitude.setText("Loading...");
	}

	String LATTITUDE;
	String LOGITUDE;

	@Override
	public void onLocationChanged(Location location) {
		double lat = location.getLatitude();
		double lag = location.getLongitude();
		LATTITUDE = Double.toString(lat);
		LOGITUDE = Double.toString(lag);
		// latitude.setText(LATTITUDE);
		// logitude.setText(LOGITUDE);
		// SmsManager sm = SmsManager.getDefault();
		// // here is where the destination of the text should go
		// String number = "5556";
		// sm.sendTextMessage(number, null,
		// "latitude="+latitude.getText()+"\nlongitude="+logitude.getText(),
		// null, null);
	}

	@Override
	public void onProviderDisabled(String arg0) {
	}

	@Override
	public void onProviderEnabled(String arg0) {
	}

	@Override
	public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
	}
	// /** Register for the updates when Activity is in foreground */
	// @Override
	// protected void onResume()
	// {
	// super.onResume();
	// lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f,
	// this);
	// }
	//
	// /** Stop the updates when Activity is paused */
	// @Override
	// protected void onPause() {
	// super.onPause();
	// lm.removeUpdates(this);
	// }
}

You have context passed as parameter to onRecieve() method, so just use:

 @Override
    public void onReceive(Context context, Intent intent) {
        //start activity
        Intent i = new Intent();
        i.setClassName("com.test", "com.test.MainActivity");
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
    }

It works, of course you have to change package and activity class name to your own.

I am using this and its work on my site:

Intent intentone = new Intent(context.getApplicationContext(), DialogAct.class);
intentone.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intentone);

Intent intent1 = new Intent();
intent1.setClassName(context.getPackageName(), MainActivity.class.getName());
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent1);

to prevent those package exceptions