还是第一次使用简书的markDown
代码框
runtime method swizzling
//静态就交换静态，实例方法就交换实例方法
void Swizzle(Class c, SEL origSEL, SEL newSEL)
{
Method origMethod = class_getInstanceMethod(c, origSEL);
Method newMethod = nil;
if (!origMethod) {
origMethod = class_getClassMethod(c, origSEL);
if (!origMethod) {
return;
}
newMethod = class_getClassMethod(c, newSEL);
if (!newMethod) {
return;
}
}else{
newMethod = class_getInstanceMethod(c, newSEL);
if (!newMethod) {
return;
}
}
//自身已经有了就添加不成功，直接交换即可
if(class_addMethod(c, origSEL, method_getImplementation(newMethod), method_getTypeEncoding(newMethod))){
class_replaceMethod(c, newSEL, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
}else{
method_exchangeImplementations(origMethod, newMethod);
}
}
搞定，可以了，以后继续玩，好开心
