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Android Implementing Designs for Android Adding Push Notifications from Parse.com Preparing User-to-User Push Notifications

Now, save currentUserId in the ParseInstallation variable using the put() method. Use the key "us

Pliz help!

LoginActivity.java
import android.app.Activity;
import android.os.Bundle;
import com.parse.ParseInstallation;
import com.parse.ParseUser;

public class LoginActivity extends Activity {

    /*
     * Some code has been omitted for brevity!
     * This method gets called upon a successful login.
     */

    public void updateParseInstallation() {
        String currentUserId = ParseUser.getCurrentUser().getObjectId();

        ParseInstallation installation;
            ParseInstallation.getCurrentInstallation().saveInBackground();
            installation.put("userId",currentUserId);
    }
}
InviteActivity.java
import android.app.Activity;
import android.os.Bundle;
import com.parse.ParseInstallation;
import com.parse.ParseQuery;

public class InviteActivity extends Activity {

    /*
     * Some code has been omitted for brevity!
     * This method gets called when an invitation is sent.
     */

    public void sendPushNotifications(String playerId) {
        ParseQuery<ParseInstallation> pushQuery;
    }
}