有谁知道为什么doInBackground需要很长时间才能启动？这是一个例子:runDoInBackground(){print("startingtask");newMyAsyncTask(someObject,otherObject).execute((Void)null);}privateclassMyAsyncTaskextends{SomeObjectsomeObject;OtherObjectotherObject;publicMyAsyncTask(SomeObjectsomeObject,OtherObjectotherObject){this.someObject=s