// Android开发中，有时候需要判断App是否在前台运行。 代码实现如下：
private boolean isRunningForeground(Context context) {
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
String currentPackageName = cn.getPackageName();
if (currentPackageName != null && currentPackageName.equals(getPackageName())) {
return true;
}
return false;
}//注意：AndroidManifest.xml中需增加< uses-permission android:name =“android.permission.GET_TASKS” />
protected static boolean isTopActivity(Activity activity) {
String packageName = "xxxxx";
ActivityManager activityManager = (ActivityManager) activity.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> tasksInfo = activityManager.getRunningTasks(1);
if (tasksInfo.size() > 0) {
System.out.println("---------------包名-----------" + tasksInfo.get(0).topActivity.getPackageName());
// 应用程序位于堆栈的顶层
if (packageName.equals(tasksInfo.get(0).topActivity.getPackageName())) {
return true;
}
}
return false;
}//需要添加android.permission.GET_TASKS权限
