MethodSwizzle

doorxp

于 2013-11-13 11:16:17 发布

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分类专栏：苹果系统 IOS

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void MethodSwizzle(Class aClass, SEL orig_sel, SEL alt_sel)
{
    Method orig_method = nil, alt_method = nil;
  
    // First, look for the methods
    orig_method = class_getInstanceMethod(aClass, orig_sel);
    alt_method = class_getInstanceMethod(aClass, alt_sel);
	
    // If both are found, swizzle them
    if ((orig_method != nil) && (alt_method != nil)) {
        method_exchangeImplementations(orig_method, alt_method);
	}
}
 
void MethodSwizzleClass(Class aClass, SEL orig_sel, SEL alt_sel)
{
    Method orig_method = nil, alt_method = nil;
	
    // First, look for the methods
    orig_method = class_getClassMethod(aClass, orig_sel);
    alt_method = class_getClassMethod(aClass, alt_sel);
	
    // If both are found, swizzle them
    if ((orig_method != nil) && (alt_method != nil)) {
        method_exchangeImplementations(orig_method, alt_method);
	}
}