处理WKContentView的crash

在使用WKWebView的时候，有一个[WKContentView isSecureTextEntry]:的错误。后来看到了一种解决方法，故记录下来：

/**
 处理WKContentView的crash
 [WKContentView isSecureTextEntry]: unrecognized selector sent to instance 0x101bd5000
 */
+ (void)progressWKContentViewCrash {
    if (([[[UIDevice currentDevice] systemVersion] doubleValue] >= 8.0)) {
        const char *className = @"WKContentView".UTF8String;
        Class WKContentViewClass = objc_getClass(className);
        SEL isSecureTextEntry = NSSelectorFromString(@"isSecureTextEntry");
        SEL secureTextEntry = NSSelectorFromString(@"secureTextEntry");
        BOOL addIsSecureTextEntry = class_addMethod(WKContentViewClass, isSecureTextEntry, (IMP)isSecureTextEntryIMP, "B@:");
        BOOL addSecureTextEntry = class_addMethod(WKContentViewClass, secureTextEntry, (IMP)secureTextEntryIMP, "B@:");
        if (!addIsSecureTextEntry || !addSecureTextEntry) {
            NSLog(@"WKContentView-Crash->修复失败");
        }
    }
}

/**
 实现WKContentView对象isSecureTextEntry方法
 @return NO
 */
BOOL isSecureTextEntryIMP(id sender, SEL cmd) {
    return NO;
}

/**
 实现WKContentView对象secureTextEntry方法
 @return NO
 */
BOOL secureTextEntryIMP(id sender, SEL cmd) {
    return NO;
}

OK !
![原文地址]: http://www.jianshu.com/p/7ef5814a871b