前言
- 我又来偷懒来了，
- UIButton同样也是我们经常使用到的控件，那么常规我们为按钮绑定点击事件都是写一个方法，然后绑定这样子，一如既往我还是比较喜欢东西放在一起找起来也方便，于是有了下面的封装处理
之前写过一篇UIView的手势点击，这两基本就解决了大部分常规的点击处理
iOS UIView添加手势回调 . 将偷懒进行到底 - -|
. Demo地址
API
/// 添加点击事件，默认UIControlEventTouchUpInside
- (void)kj_addAction:(KJButtonBlock)block;
/// 添加事件，不支持多枚举形式
- (void)kj_addAction:(KJButtonBlock)block forControlEvents:(UIControlEvents)controlEvents;
常规对比
常规做法
[_button addTarget:self action:@selector(action) forControlEvents:(UIControlEventTouchUpInside)];
[_button addTarget:self action:@selector(action2) forControlEvents:(UIControlEventTouchDown)];
/// Action
- (void)action{
NSLog(@"UIControlEventTouchUpInside");
}
- (void)action2{
NSLog(@"UIControlEventTouchDown");
}
封装之后做法
[_button kj_addAction:^(UIButton * _Nonnull kButton) {
NSLog(@"UIControlEventTouchUpInside");
}];
[_button kj_addAction:^(UIButton * _Nonnull kButton) {
NSLog(@"UIControlEventTouchDown");
} forControlEvents:(UIControlEventTouchDown)];
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编译时间:16:51:45
文件名:KJButtonVC.m
方法名:-[KJButtonVC button]_block_invoke_2
行号:128
打印信息:UIControlEventTouchDown
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编译时间:16:51:45
文件名:KJButtonVC.m
方法名:-[KJButtonVC button]_block_invoke
行号:125
打印信息:UIControlEventTouchUpInside
简单介绍
1. 暂时支持UIControlEvents九种类型
static NSString * const _Nonnull KJButtonControlEventsStringMap[] = {
[UIControlEventTouchDown] = @"KJ_X_UIControlEventTouchDown",
[UIControlEventTouchDownRepeat] = @"KJ_X_UIControlEventTouchDownRepeat",
[UIControlEventTouchDragInside] = @"KJ_X_UIControlEventTouchDragInside",
[UIControlEventTouchDragOutside] = @"KJ_X_UIControlEventTouchDragOutside",
[UIControlEventTouchDragEnter] = @"KJ_X_UIControlEventTouchDragEnter",
[UIControlEventTouchDragExit] = @"KJ_X_UIControlEventTouchDragExit",
[UIControlEventTouchUpInside] = @"KJ_X_UIControlEventTouchUpInside",
[UIControlEventTouchUpOutside] = @"KJ_X_UIControlEventTouchUpOutside",
[UIControlEventTouchCancel] = @"KJ_X_UIControlEventTouchCancel",
};
2. 事件响应方法处理
我喜欢偷懒所以采用宏的方式处理
#define KJButtonAction(name) \
- (void)kj_action##name{ \
KJButtonBlock block = objc_getAssociatedObject(self, _cmd);\
if (block) block(self);\
}
/// 事件响应方法
KJButtonAction(KJ_X_UIControlEventTouchDown);
KJButtonAction(KJ_X_UIControlEventTouchDownRepeat);
KJButtonAction(KJ_X_UIControlEventTouchDragInside);
KJButtonAction(KJ_X_UIControlEventTouchDragOutside);
KJButtonAction(KJ_X_UIControlEventTouchDragEnter);
KJButtonAction(KJ_X_UIControlEventTouchDragExit);
KJButtonAction(KJ_X_UIControlEventTouchUpInside);
KJButtonAction(KJ_X_UIControlEventTouchUpOutside);
KJButtonAction(KJ_X_UIControlEventTouchCancel);
3. kj_addAction:forControlEvents:
事件处理
/// 添加点击事件，默认UIControlEventTouchUpInside
- (void)kj_addAction:(KJButtonBlock)block{
[self kj_addAction:block forControlEvents:UIControlEventTouchUpInside];
}
/// 添加事件
- (void)kj_addAction:(KJButtonBlock)block forControlEvents:(UIControlEvents)controlEvents{
if (block == nil || controlEvents>(1<<8)) return;
if (controlEvents != UIControlEventTouchDown && (controlEvents&1)) return;
NSString *actionName = [@"kj_action" stringByAppendingFormat:@"%@",KJButtonControlEventsStringMap[controlEvents]];
SEL selector = NSSelectorFromString(actionName);
objc_setAssociatedObject(self, selector, block, OBJC_ASSOCIATION_COPY_NONATOMIC);
[self addTarget:self action:selector forControlEvents:controlEvents];
}
分别说说三种return的情况
-
block：回调未处理 -
controlEvents>(1<<8)：超出九种情况 -
controlEvents&1：多枚举情况
4. 获取每种UIControlEvents对应的绑定方法
NSString *actionName = [@"kj_action" stringByAppendingFormat:@"%@",KJButtonControlEventsStringMap[controlEvents]];
SEL selector = NSSelectorFromString(actionName);
5. 回调和绑定方法
objc_setAssociatedObject(self, selector, block, OBJC_ASSOCIATION_COPY_NONATOMIC);
[self addTarget:self action:selector forControlEvents:controlEvents];
6. 获取回调处理
获取每种方法对应的回调
KJButtonBlock block = objc_getAssociatedObject(self, _cmd);
if (block) block(self);
友情提醒
- 暂时我只封装了上述的九种点击方式，其余的暂未处理
- 暂时不支持多枚举，例如如下方式是不支持的
[_button kj_addAction:^(UIButton * _Nonnull kButton) {
NSLog(@"UIControlEventTouchDown");
} forControlEvents:(UIControlEventTouchDown)|(UIControlEventTouchUpInside)];
