单击通知后阻止新的活动实例 [英] Prevent new activity instance after clicking on notification

问题描述

应用程序(不想要的)行为 -

application (non-wanted) behavior -

1. 启动应用程序，将一些文本放入文本框并通过按钮操作创建通知.
2. 用户点击"主页按钮，应用程序被最小化"，通知栏可用
3. 用户选择通知，应用程序被最大化"

但是 - 不是原始实例，而是启动新实例(例如，在最新实例中缺少原始文本；当最新实例关闭时，原始实例仍然带有原始文本).

BUT - instead of the original instance, new instance is started (e.g. in the newest instance is missing the original text; when the latest instance is closed there is still the original instance with original text ) .

通知方法代码

Context context = getApplicationContext();
    CharSequence contentTitle = "someText1";
    CharSequence contentText = "someText2";
    Intent notifyIntent = new Intent(Intent.ACTION_MAIN);
    notifyIntent.setClass(getApplicationContext(), RadioStream.class);
    PendingIntent intent = 
       PendingIntent.getActivity(RadioStream.this, 0, notifyIntent, 0);

    notifyDetails.setLatestEventInfo(context, contentTitle, contentText, intent);
    mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);

我也在清单 xml 文件中跟随标签

i have also in the manifest xml file following tag

android:launchMode="singleTask"

但还是一样...主要问题是应用程序的双重/三重初始化，我知道还有其他方法可以保留恢复的应用程序中的值.还需要应用程序保持在后台运行，因为主要功能是网络广播的流媒体.

but it is still the same... The main problem is double/triple initialization of the application, i know that there are other means to preserve the values in resumed applications. Also it is needed that the applications stays running in background as the main functionality is the streaming of internet radio.

代码中缺少什么?缺少我方的哪些信息来解决问题?

What is missing in the code ? What kind of information from my side is missing for to troubleshoot the issue ?

谢谢！

大卫

推荐答案

您所说的应用程序"很可能是一个活动.为了避免在出现在前面时重新装箱，请使用

What you refer as "application" is most probably an Activity. To avoid re-crating it when bringing up to front, use

android:launchMode="singleTop"

要有一些代码运行后台，需要实现为Service

To have some code running background, you need to realize it as Service

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