Android系统判断当前界面是否是桌面Launcher

public static boolean isHome(Context context) {

 ActivityManagerm ActivityManager =(ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);

List<ActivityManager.RunningTaskInfo> rti = mActivityManager.getRunningTasks(1);

return getHomes(context).contains(rti.get(0).topActivity.getPackageName());

    }

/**

     *获得属于桌面的应用的应用包名称

     *

     * @return返回包含所有包名的字符串列表

     */

    public staticList getHomes(Context context) {

         List<String> names = new ArrayList<String>();

        PackageManagerpackageManager = context.getPackageManager();

        Intent intent = newIntent(Intent.ACTION_MAIN);

        intent.addCategory(Intent.CATEGORY_HOME);

       List<ResolveInfo> resolveInfos =packageManager.queryIntentActivities(intent,

               PackageManager.GET_INTENT_FILTERS);

        for (ResolveInforesolveInfo : resolveInfos) {

            names.add(resolveInfo.activityInfo.packageName);

        }

        return names;

    }