获取Android正在运行的任务和服务

检测某ActivityUpdate是否在当前Task的栈顶

public static boolean isTopActivy(String cmdName, Context context)
{
ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> runningTaskInfos = manager.getRunningTasks(Integer.MAX_VALUE);
String cmpNameTemp = null;
if (null != runningTaskInfos)
{
cmpNameTemp = (runningTaskInfos.get(0).topActivity).toString();
}

if (null == cmpNameTemp)
{
return false;
}

return cmpNameTemp.equals(cmdName);

}

 

判断Android应用是否在前台

public static boolean isAppOnForeground(Context context)
{
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
String packageName = context.getPackageName();
List<RecentTaskInfo> appTask = activityManager.getRecentTasks(Integer.MAX_VALUE, 1);

if (appTask == null)
{
return false;
}

if (appTask.get(0).baseIntent.toString().contains(packageName))
{
return true;
}
return false;
}

 

获取Android手机内安装的所有桌面

private static List<String> getAllTheLauncher(Context context)
{
List<String> names = null;
PackageManager pkgMgt = context.getPackageManager();
Intent it = new Intent(Intent.ACTION_MAIN);
it.addCategory(Intent.CATEGORY_HOME);
List<ResolveInfo> ra = pkgMgt.queryIntentActivities(it, 0);
if (ra.size() != 0)
{
names = new ArrayList<String>();
}
for (int i = 0; i < ra.size(); i++)
{
String packageName = ra.get(i).activityInfo.packageName;
names.add(packageName);
}
return names;
}

 

Android 判断程序前后台状态

public static boolean isLauncherRunnig(Context context)
{
boolean result = false;
List<String> names = getAllTheLauncher(context);
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;
}

Android系统内部状态信息的相关api：

得到ActivityManager ：

ActivityManager activityManager = (ActivityManager)this.getSystemService(ACTIVITY_SERVICE)

这个位查到底是什么信息：   

ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();  

获取进程内存状态的信息：

Debug.MemoryInfo[] processMemoryInfo = activityManager.getProcessMemoryInfo(processIds);

  

获取当前运行的service信息：

List<RunningServiceInfo> runningServiceInfos = activityManager.getRunningServices(MaxValue);   

获取当前运行的任务信息：
List<RunningTaskInfo> runningTaskInfos = activityManager.getRunningTasks(MaxValue);

其中runningTaskInfos 的 topActivity就是当前Task的活跃Activity

在getRunningTasks()所返回的Task队列中系统会根据这些Task的活跃度有一个排序，越活跃越是靠前。第一个就是当前活动的Task

/**

* 检测某ActivityUpdate是否在当前Task的栈顶

*/

public boolean isTopActivy(String cmdName){
        ActivityManager manager = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
        List<RunningTaskInfo> runningTaskInfos = manager.getRunningTasks(1);
        String cmpNameTemp = null;

        if(null != runningTaskInfos){

                cmpNameTemp=(runningTaskInfos.get(0).topActivity).toString);

         
      Log.e("cmpname","cmpname:"+cmpName);

        }

       if(null == cmpNameTemp)return false;
       return cmpNameTemp.equals(cmdName);

}

最后在应用中添加所需的权限：

<uses-permission android:name="android.permission.GET_TASKS"/>