判断一个运用是否在运行的工具类_isrun(context context-优快云博客

本文提供了一个Java类JudgeIsRun，包含三个方法用于检测指定的应用是否正在运行：AppIsRun检查应用是否在运行任务列表中；isForeground判断应用是否处于前台；isForeground1则通过检查当前最上层活动来确定应用是否在前台。

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public class JudgeIsRun {
	public static boolean AppIsRun(Context context,String packageName){
		ActivityManager aManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
		List<RunningTaskInfo> list = aManager.getRunningTasks(100);
		for (RunningTaskInfo info : list) {
			if (info.topActivity.getPackageName().equals(packageName) || info.baseActivity.getPackageName().equals(packageName)) {
				Log.i("aa",info.topActivity.getPackageName() + " info.baseActivity.getPackageName()="+info.baseActivity.getPackageName());
				return true;
			}
		}
		return true;
	}
	
	public static boolean isForeground(Context context,String packageName) {
        if (context != null) {
            ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            List<ActivityManager.RunningAppProcessInfo> processes = activityManager.getRunningAppProcesses();
            for (ActivityManager.RunningAppProcessInfo processInfo: processes) {
                if (processInfo.processName.equals(packageName)) {
                    if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
                    	Log.v("CommonFunction", " isForeground = true");
                    	return true;
                    }
                }
            }
        }
        Log.v("CommonFunction", " isForeground = false");
        return false;
    }
	
	public static boolean isForeground1(ActivityManager context,String packageName) {
        if (context != null) {
            ComponentName cn = context.getRunningTasks(1).get(0).topActivity;
            String currentPackageName = cn.getPackageName();
            if (!TextUtils.isEmpty(currentPackageName) && currentPackageName.equals(packageName)) {
                return true;
            }
            return false;
        }
        return false;
    }
	
}