Android判斷某個Activity是否正在前臺顯示
阿新 • • 發佈:2018-11-10
判斷某個 Activity 是否正在前臺顯示的方法:
/** * 判斷某個activity是否在前臺顯示 */ public static boolean isForeground(Activity activity) { return isForeground(activity, activity.getClass().getName()); } /** * 判斷某個介面是否在前臺,返回true,為顯示,否則不是 */ public static boolean isForeground(Activity context, String className) { if (context == null || TextUtils.isEmpty(className)) return false; ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List<ActivityManager.RunningTaskInfo> list = am.getRunningTasks(1); if (list != null && list.size() > 0) { ComponentName cpn = list.get(0).topActivity; if (className.equals(cpn.getClassName())) return true; } return false; }
下面是呼叫:
if (isForeground(activity)){
//在前臺顯示,做邏輯
}