1. 在AndroidManifest.xml中增加权限
<uses-permission android:name="android.permission.GET_TASKS"></uses-permission>
2. 实现函数
String getTopActivity() { ActivityManager manager = (ActivityManager)getSystemService(ACTIVITY_SERVICE); List<RunningTaskInfo> runningTaskInfos = manager.getRunningTasks(1); if(runningTaskInfos != null) return (runningTaskInfos.get(0).topActivity).toString(); else return null ; }