等待10秒后，iPhone SendDelegateMessage无法返回 [英] IPhone SendDelegateMessage failed to return after waiting 10 Secs

问题描述

当尝试将大型NSData对象转换为base64Encoding以进行HTTP传输时，我一直从iPhone 3.0中收到以下消息：

I keep getting the following message from my iPhone 3.0 when trying to convert a large NSData object into base64Encoding for http transmission :

void SendDelegateMessage(NSInvocation*): delegate failed to return after waiting 10 seconds. main run loop mode: kCFRunLoopDefaultMode

如果在整个时间间隔内都没有使用触摸屏（可以

If you were not using the touch screen for this entire interval (which can prolong this wait), please file a bug.

我正在使用同步请求，触摸屏将被冻结，只有UIProgressView会在上传数据时显示状态。
任何人都有解决此问题的好主意吗？

I am using synchronous request and touch screen will be frozen with only UIProgressView displaying status while uploading data. Anyone have any good idea how to resolve this problem ?

推荐答案

如其所说：您花费的时间太长； D

的网络视图为英语：我叫了一位代表，时间太长，无法继续显示HTML或运行JS

As it says: you take too long ;D
web view to english: " i called a delegate and it takes too long and I can't continue displaying HTML or running JS"

不要阻止Web视图，否则一段时间后它将抱怨...

don't block the web view or it will complain after a while...

所以要执行同步请求？在主线程上？永远不要这样做

so doing a synchronous request? on the main thread? never do that

更好的方式：

- webView:... {
      dispatch_async(dispatch_get_global_queue(0,0), ^{
          //DO LONG RUNNING IN BG

          dispatch_sync(dispatch_get_main_queue(), ^{
              //update UI
          }
      }
}

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