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,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); }