一般的问题是这样的“bool _WebTryThreadLock(bool), 0xxxxxx: Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a seco...
bool([x])英文说明:Convert a value to a Boolean, using the standard truth testing procedure. If x is false or omitted, this returns False; otherwise it returns True. bool is also a class, wh...