通知使用

创建点击发送通知事件
Button send=findViewById(R.id.send_notification);
send.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        NotificationManager manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        Notification notification=new NotificationCompat.Builder(MainActivity.this)
                .setContentTitle("This is content title")
                .setContentText("This is content text")
                .setWhen(System.currentTimeMillis())
                .setSmallIcon(R.drawable.ic_launcher_foreground)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher_foreground))
                .build();
        manager.notify(1,notification);

    }
});

 点击发送通知事件，点击通知跳转到应用中

Button send=findViewById(R.id.send_notification);
send.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        //点击通知 触发事件
        Intent intent =new Intent(MainActivity.this,NotificationLayoutActivity.class);
        PendingIntent pendingIntent=PendingIntent.getActivity(MainActivity.this,0,intent,0);

       //发送通知
        NotificationManager manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        Notification notification=new NotificationCompat.Builder(MainActivity.this)
                .setContentTitle("This is content title")
                .setContentText("This is content text")
                .setWhen(System.currentTimeMillis())
                .setSmallIcon(R.drawable.ic_launcher_foreground)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher_foreground))
                .setContentIntent(pendingIntent)
                .setAutoCancel(true)
                .setSound(Uri.fromFile(new File("/system/media/audio/ringtones/Luna.ogg")))
                .build();
        manager.notify(1,notification);

    }
});

 学习文档：https://www.jianshu.com/p/22e27a639787