小编Ful*_*ife的帖子

我正在使用Android Studio.我想添加一些通知的消息.为什么当我运行应用程序时屏幕上没有内容信息？

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private int i = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

public void notyfikacja(View view) {

    Intent intent = new Intent(this, SecondActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
    builder
            .setSmallIcon(android.R.drawable.arrow_up_float)
            .setContentInfo("You have"+  ++i + "messages" )
            .setContentText("ContentText")
            .setContentTitle("ContentTitle")
            .setAutoCancel(true)
            .setContentIntent(pendingIntent);

    Notification notification = builder.build();
    NotificationManagerCompat.from(this).notify(0, notification);
}

我添加了Notification Screeshot