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KittenYang
/ UIGestureRecognizer+Block.m
Last active
June 16, 2019 01:46
使用 Block 创建 UIGestureRecognizer
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| static const int target_key; | |
| @implementation UIGestureRecognizer (Block) | |
| +(instancetype)nvm_gestureRecognizerWithActionBlock:(NVMGestureBlock)block { | |
| return [[self alloc]initWithActionBlock:block]; | |
| } | |
| - (instancetype)initWithActionBlock:(NVMGestureBlock)block { | |
| self = [self init]; | |
| [self addActionBlock:block]; |
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| void Swizzle(Class c, SEL orig, SEL new) { | |
| Method origMethod = class_getInstanceMethod(c, orig); | |
| Method newMethod = class_getInstanceMethod(c, new); | |
| if (class_addMethod(c, orig, method_getImplementation(newMethod), method_getTypeEncoding(newMethod))){ | |
| class_replaceMethod(c, new, method_getImplementation(origMethod), method_getTypeEncoding(origMethod)); | |
| } else { | |
| method_exchangeImplementations(origMethod, newMethod); | |
| } | |
| } |