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objective-c - 适配iOS7，给WKWebView做了一个分类，然后另外一个类有使用分类中方法，对于iOS7及以下的系统做适配，应该怎么做？
天蓬老师
2017-04-18 09:48:27
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需要对分类中.h文件用条件编译吗？还是只需要对调用的时候做一个判断？
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天蓬老师
欢迎选择我的课程，让我们一起见证您的进步~~
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刘奇
2017-04-18 09:50:27
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