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ActivityManager判断app运行状态

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摘要: 在后台与网络交互中，需要使用Service来和服务器保持连接，因此Service在被进程Kill掉后，主动开启Service是必要的，因此首先的检测Service是否已启动

检测Service是否已启动

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public static boolean isServiceRunning(String serviceClassName){
    final ActivityManager activityManager = (ActivityManager)Application.getContext().getSystemService(Context.ACTIVITY_SERVICE);
    final List<RunningServiceInfo> services = activityManager.getRunningServices(Integer.MAX_VALUE);
    for (RunningServiceInfo runningServiceInfo : services) {
        if (runningServiceInfo.service.getClassName().equals(serviceClassName)){
            return true;
        }
    }
    return false;
 }

检测Activity是否已启动

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<!-- 权限-->
<uses-permission android:name="android.permission.GET_TASKS"/>
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ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> list = am.getRunningTasks(100);
boolean isAppRunning = false;
String MY_PKG_NAME = "com.cyberblue.iitag";
for (RunningTaskInfo info : list) {
	if (info.topActivity.getPackageName().equals(MY_PKG_NAME) || info.baseActivity.getPackageName().equals(MY_PKG_NAME)) {
		isAppRunning = true;
		Log.i(TAG,info.topActivity.getPackageName() + " info.baseActivity.getPackageName()="+info.baseActivity.getPackageName());
		break;
	}
}
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private  boolean isLauncherRunnig(Context context) {
        boolean result = false ;
        List<String> names = getAllTheLauncher();
        ActivityManager mActivityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE) ;
        List<ActivityManager.RunningAppProcessInfo> appList = mActivityManager.getRunningAppProcesses() ;
        for (RunningAppProcessInfo running : appList) {
                if (running.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
                        for (int i = 0; i < names.size(); i++) {
                                if (names.get(i).equals(running.processName)) {
                                        result = true ;
                                        break;
                                }
                        }
                }
        }
        return result ;
}

判断App是否运行

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   /**
 * 判断app是否正在运行
 * @param ctx
 * @param packageName
 * @return
 */
public boolean appIsRunning(Context ctx,String packageName)
{
	ActivityManager am = (ActivityManager) ctx.getSystemService(ACTIVITY_SERVICE);
	List<RunningAppProcessInfo> runningAppProcesses = am.getRunningAppProcesses();
	if(runningAppProcesses!=null)
	{
		for (RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses) {
			if(runningAppProcessInfo.processName.startsWith(packageName))
			{
				return true;
			}
		}
	}
	return false;
}
/**
 * app 是否在后台运行
 * @param ctx
 * @param packageName
 * @return
 */
public boolean appIsBackgroundRunning(Context ctx,String packageName)
{
	ActivityManager am = (ActivityManager) ctx.getSystemService(ACTIVITY_SERVICE);
	List<RunningAppProcessInfo> runningAppProcesses = am.getRunningAppProcesses();
	if(runningAppProcesses!=null)
	{
		for (RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses) {
			if(runningAppProcessInfo.processName.startsWith(packageName))
			{
				return runningAppProcessInfo.importance!=RunningAppProcessInfo.IMPORTANCE_FOREGROUND && runningAppProcessInfo.importance!=RunningAppProcessInfo.IMPORTANCE_VISIBLE; //排除无界面的app
			}
		}
	}
	return false;
}