判断APP是否处于前台问题代码,Java代码库,德仔网

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【Java】判断APP是否处于前台问题

作者:知章 / 发布于2017/9/11/ 773

public boolean isApplicationBroughtToBackground(final Context context) {

   ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
   if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH) {
       List<ActivityManager.RunningAppProcessInfo> runningProcesses = am.getRunningAppProcesses();
       if(runningProcesses != null && !runningProcesses.isEmpty()){
           if(runningProcesses.get(0).importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_BACKGROUND){
               return true;
           }
       }

    }else{
        List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
        if (tasks != null && !tasks.isEmpty()) {
            ComponentName topActivity = tasks.get(0).topActivity;
            if (!topActivity.getPackageName().equals(context.getPackageName())) {
                return true;
            }
        }
    }
    return false;
}

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