判断app是否已启动

/**
* packName  应用的包名
* 返回值
*/
public static boolean isAppAlive(Context context, String packageName){
ActivityManager activityManager =
(ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> processInfos
= activityManager.getRunningAppProcesses();
for(int i = 0; i < processInfos.size(); i++){
if(processInfos.get(i).processName.equals(packageName)){
Log.i("NotificationLaunch",
String.format("the %s is running, isAppAlive return true", packageName));
return true;
}
}
Log.i("NotificationLaunch",
String.format("the %s is not running, isAppAlive return false", packageName));
return false;
}