This is a code for creating a notification by click a button and then turn to another class. The second class it totally empty. I don't know why it doesn't appear even it cannot turn to another class.
I have already checked the "sittings" of this file and the "notification" is "on". Could anyone help me to check it?
MainActivity.class
package com.example.ww.lab;
import android.app.Notification;
import android.app.PendingIntent;
import android.content.Intent;
import android.support.v4.app.NotificationManagerCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.NotificationManager;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
private int id = 1;
private NotificationCompat.Builder notification_builder;
private NotificationManagerCompat notification_manager;
Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
notification_manager.notify(id, notification_builder.build());
}
});
Intent open_activity_intent = new Intent(this, NotificationActivity.class);
PendingIntent pending_intent = PendingIntent
.getActivity(this, 0, open_activity_intent, PendingIntent.FLAG_CANCEL_CURRENT);
notification_builder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("Notification Title")
.setContentText("Notification Body")
.setAutoCancel(true)
.setContentIntent(pending_intent);
notification_manager = NotificationManagerCompat.from(this);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.ww.lab.MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Do it!"
android:id="@+id/button"
android:onClick="sendNotification"/>
</android.support.constraint.ConstraintLayout>
