Kotlin 下拉通知面板时是否可以暂停Android中的任何视频(媒体播放器)应用程序

发布于01月02日

Assume I have the AOSP source code, How can I pause the APP in the foreground when pulling down the notification panel? I've googled and find an APP can listen the event onWindowFocusChange and take some action proactively, but how can I pause ANY APP when pulling down the notification panel, without modify every APP respectively (which is impractical)?

有没有办法从SystemUI进程调用任何前台App的onPause函数？

推荐答案

You can use below method for detecting the notification panel pull,

在你的 list 文件里

 <uses-permission android:name="android.permission.EXPAND_STATUS_BAR" />

在您的活动中，覆盖onWindowFocusChanged()并编写以下代码.

This uses the permission

@Override
public void onWindowFocusChanged(boolean hasFocus)
{
    try
    {
        if(!hasFocus)
        {
            Object service  = getSystemService("statusbar");
            Class<?> statusbarManager = Class.forName("android.app.StatusBarManager");
            Method collapse = statusbarManager.getMethod("collapse");
            collapse .setAccessible(true);
            collapse .invoke(service);
        }
    }
    catch(Exception ex)
    {
        if(!hasFocus)
        {
            try {
                Object service  = getSystemService("statusbar");
                Class<?> statusbarManager = Class.forName("android.app.StatusBarManager");
                Method collapse = statusbarManager.getMethod("collapse");
                collapse .setAccessible(true);
                collapse .invoke(service);

            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();                
            }
            ex.printStackTrace();
        }
    }
}

Then in your app request for audio focus, refer below link

https://developer.android.com/guide/topics/media-apps/audio-focus#java

This will pause audio access for all other apps.