Question

可以通过单击应用程序图标或通知图标打开UIMain，我希望定义活动的打开方式。

所以我使用notificationIntent.putExtra("IsStartFromIcon",true)设置了一个代码，但Utility.LogError(""+isStartFromIcon)始终显示 false ，我的代码有什么问题？

还有其他更好的方法吗？谢谢！

public class UIMain extends Activity {

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

        findViewById(R.id.buttonClose).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                PublicParFun.DisplayIconByContent(mContext, "This is OK");
                finish();
            }
        });

        boolean isStartFromIcon=this.getIntent().getBooleanExtra("IsStartFromIcon",false);
        Utility.LogError(""+isStartFromIcon);

    }

}

PublicParFun.cs

public class PublicParFun {
  public static void DisplayIconByContent(Context myContext,String myContentText) {

        CharSequence contentTitle= myContext.getResources().getString(R.string.NotificationTitle);

        Intent notificationIntent = new Intent(myContext, ui.UIMain.class);

        notificationIntent.putExtra("IsStartFromIcon",true);

        PendingIntent contentItent = PendingIntent.getActivity(myContext, 0,notificationIntent, 0);



        Notification.Builder builder = new Notification.Builder(myContext)
                .setSmallIcon(R.drawable.icon)
                .setContentTitle(contentTitle)
                .setContentText(myContentText)
                .setContentIntent(contentItent);
        Notification notification = builder.build();
        notification.flags |= Notification.FLAG_ONGOING_EVENT; 
        notification.flags |= Notification.FLAG_NO_CLEAR; 

        NotificationManager notificationManager = (NotificationManager) myContext.getSystemService(android.content.Context.NOTIFICATION_SERVICE);
        notificationManager.notify(myContext.getResources().getInteger(R.integer.NotificationID), notification);
    }
}

Answer 1

希望这会对你有所帮助

  private  void generateNotification(Context context, String message ) {

        int icon = R.drawable.icon;

        long when = System.currentTimeMillis();

        NotificationManager notificationManager = (NotificationManager)

                context.getSystemService(Context.NOTIFICATION_SERVICE);

        Notification notification = new Notification(icon, message);

        String title = context.getString(R.string.app_name);

        Intent notificationIntent;      
        notificationIntent = new Intent(context, ActivityName.class);
        notificationIntent.putExtra("From", "notifyFrag");

        notificationIntent .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
                Intent.FLAG_ACTIVITY_SINGLE_TOP);
        PendingIntent intent =
                PendingIntent.getActivity(context, 0, notificationIntent, 0);
        notificationIntent .setLatestEventInfo(context, title, message, intent);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        notification.defaults |= Notification.DEFAULT_VIBRATE;
        notificationManager.notify(0, notification);

}

在您的活动类中，您可以检查通过“通知”图标打开的活动是否已使用以下代码

在您的oncreat内部，您可以使用

通过通知检查活动是否已打开

  String type = getIntent().getStringExtra("From");
if (type != null) {
    switch (type) {
        case "notifyFrag":

        // your activity called from notification 

            break;
    }
}

Answer 2

因为您的活动正在运行后台，当您单击notifacation活动时会显示但意图没有转移到活动，因此您无法获取该值，您可以使用这种方式：添加代码intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)这将清除活动背景

如何通过单击“通知”图标来了解活动是否已打开？

2 个答案: