关于iOS中动作传输问题。
0x01.Objective C中动作传输问题
新建一个UIView类，上面定义了很多按钮，如何给每个按钮添加一个动作，并在主函数中实现点击使用呢？下面给出两种语言的传输方法。
.h
@interface TargetActionView : UIView
@property(nonatomic,assign)id target; //定义属性
@property(nonatomic,assign) SEL action;
-(id)initWithFrame:(CGRect)frame target:(id)target action:(SEL)action;//初始化方法
@end
.m
#import "TargetActionView.h"
@implementation TargetActionView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
-(id)initWithFrame:(CGRect)frame target:(id)target action:(SEL)action
{
self=[super initWithFrame:frame];
if (self) {
_target=target;
_action=action;
}
return self;
}
//touchesBegan方法
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[_target performSelector:_action withObject:self];
}
**主函数中使用 **
TargetActionView *targetActionView=[[TargetActionView alloc]initWithFrame:CGRectMake(30, 30, 130, 130) target:self action:@selector(changColor:)];
targetActionView.backgroundColor=[UIColor redColor];
[self.view addSubview:targetActionView];
// Do any additional setup after loading the view.
}
-(void)changColor:(TargetActionView *)color
{
color.backgroundColor=[UIColor orangeColor];
}
0x02.swift中动作传输问题
直接在初始化的时候传入selector:Selector参数，并在类中引用。
class ShareMoreView: UIView{
convenience init(frame: CGRect,selector:Selector,target:AnyObject) {
...
let button = UIButton(type:.custom)
button.tag = i+1
button.addTarget(target, action: selector, for: .touchUpInside)
...
}
}
主函数中使用
shareView = ShareMoreView(frame: CGRect(x: 0, y: 0, width: view.bounds.width, height: view.bounds.height), selector: #selector(ViewController.shareMoreClick(_:)), target: self)
func shareMoreClick(_ button:UIButton){
print "this is test!!!"
}
