Possible Duplicate:
iphone - try, catch question
please tell me that using @try @catch is useful for ios development . i want to know about the child classes of NSException. please give me the link to understand it.
Possible Duplicate:
iphone - try, catch question
please tell me that using @try @catch is useful for ios development . i want to know about the child classes of NSException. please give me the link to understand it.
您错过了一部分 @ finalally 这部分是代码段, 它运行的代码部分是否被丢弃, 如果它没有出现, 则在抓获区块被丢弃后代码块 。 另外, 人们通常不使用 @ throw 来丢弃例外 。
无论如何,最好使用 NSexpendion
,如果已经知道您的例外,可以创建和提出例外。
您可以查看 < a href=> https:// developmenter.apple.com/library/mac/#document/Cocoa/Reference/Foundation/Classes/NSExpeption_Class/Reference/Reference.html> rel=“无跟踪” >NSexpeption Applement S reference 和 About 例外和错误
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