/**
  * 判斷是否在主進(jìn)程,這個(gè)方法判斷進(jìn)程名或者pid都可以,如果進(jìn)程名一樣那pid肯定也一樣
  *
  * @return true:當(dāng)前進(jìn)程是主進(jìn)程 false:當(dāng)前進(jìn)程不是主進(jìn)程
  */
 public boolean isUIProcess() {
  ActivityManager am = ((ActivityManager) getSystemService(Context.ACTIVITY_SERVICE));
  List<ActivityManager.RunningAppProcessInfo> processInfos = am.getRunningAppProcesses();
  String mainProcessName = getPackageName();
  int myPid = android.os.Process.myPid();
  for (ActivityManager.RunningAppProcessInfo info : processInfos) {
   if (info.pid == myPid && mainProcessName.equals(info.processName)) {
    return true;
   }
  }
  return false;
 }

 /**
  * 判斷service是否已經(jīng)運(yùn)行
  * 必須判斷uid,因?yàn)榭赡苡兄孛腟ervice,所以要找自己程序的Service,不同進(jìn)程只要是同一個(gè)程序就是同一個(gè)uid,個(gè)人理解android系統(tǒng)中一個(gè)程序就是一個(gè)用戶
  * 用pid替換uid進(jìn)行判斷強(qiáng)烈不建議,因?yàn)槿绻沁h(yuǎn)程Service的話,主進(jìn)程的pid和遠(yuǎn)程Service的pid不是一個(gè)值,在主進(jìn)程調(diào)用該方法會(huì)導(dǎo)致Service即使已經(jīng)運(yùn)行也會(huì)認(rèn)為沒(méi)有運(yùn)行
  * 如果Service和主進(jìn)程是一個(gè)進(jìn)程的話,用pid不會(huì)出錯(cuò),但是這種方法強(qiáng)烈不建議,如果你后來(lái)把Service改成了遠(yuǎn)程Service,這時(shí)候判斷就出錯(cuò)了
  *
  * @param className Service的全名,例如PushService.class.getName()
  * @return true:Service已運(yùn)行 false:Service未運(yùn)行
  */
 public boolean isServiceExisted(String className) {
  ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
  List<ActivityManager.RunningServiceInfo> serviceList = am.getRunningServices(Integer.MAX_VALUE);
  int myUid = android.os.Process.myUid();
  for (ActivityManager.RunningServiceInfo runningServiceInfo : serviceList) {
   if (runningServiceInfo.uid == myUid && runningServiceInfo.service.getClassName().equals(className)) {
    return true;
   }
  }
  return false;
 }