Method Swizzing中一般替换方法都写在Category类别里吗?有没有别的实现方式
高洛峰2017-04-18 09:58:08
不一定非寫分類,你調下面的方法進行方法交換,位置不隨便寫嗎?
void methodSwizzle(Class c, SEL orig, SEL newS )
{
Method origMethod = class_getInstanceMethod(c, orig);
Method newMethod = class_getInstanceMethod(c, newS);
BOOL addSuccess = class_addMethod(c, orig, method_getImplementation(newMethod),method_getTypeEncoding(newMethod) );
if (addSuccess) {
class_replaceMethod(c, newS, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
}else{
method_exchangeImplementations(origMethod, newMethod);
}
}