Android如何得到当前正在屏幕上运行的程序包名？

Question

ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
ComponentName cn = am.getRunningTasks(1).get(0).topActivity;

这种方法在Android 5.0以上就不能用了，返回的都是桌面包。
5.0以后如何判断？还望大神赐教！

Answer 1

Are you working as a launcher? Check whether an Activity is on the top of the current Task's stack

Answer 2

You can try the following methods:

ActivityManager mActivityManager =(ActivityManager)this.getSystemService(Context.ACTIVITY_SERVICE);
if(Build.VERSION.SDK_INT > 20){
    String mPackageName = mActivityManager.getRunningAppProcesses().get(0).processName;
}else{ 
  String mpackageName =  mActivityManager.getRunningTasks(1).get(0).topActivity.getPackageName();
}