Can i use swizzle a method witht a block implementation #5

Fykec opened this Issue Mar 2, 2012 · 3 comments

3 participants


Hi, Jonathan

Can Can i use swizzle a method witht a block implementation

Normal swizzleMetod:(SEL)slector withSelctor:(SEL)newSelector

But I want this
swizzleMetod:(SEL)slector withBlock:(^ )block

because I cannot import WebView(In WebKit framework) to iOS project, but I want swizzle WebView's method, i cannot write a category for WebView, So I cannot find a place to put my newSector, so I want to use block,

Jonathan, can you give me some suggestions?

Thank You!


Sounds like you should just write your own WebView.h with just the method you want to swizzle. No need for blocks.


You I Write a WebView.h by myself, then write a category to swizzle method? I tried, but not ok
my WebView.h like this,


@interface WebView : NSObject


But in WebView's category still cannot find WebView When compile, my workmate suggest me to decompile the webkit code to my the WebView's method's list to rewrite the method than I want to swizzle, I think this maybe not so good, so
I am trying other solutions, thank you all the same.


I too would like to be able to swizzle a method with a block for the implementation.

It nice and useful in a Unit Test (esp. Kiwi) where the closure behavior of blocks can be leveraged. provides such a method: class_replaceMethodWithBlock so it might be possible...

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