虽然iOS 自带的button带有 imageEdgeInsets和titleEdgeInsets但是个人感觉用起来有时候达不到 想要的效果,很是不爽.... 所以练习链式写法的时候 ,随手写了一个button和大家分享一下!
1.button的title.
2.button的image.
3.button的高亮效果.
4.button的点击事件.
//----------Button的创建和调用---------//
{
JMButton* sender1 = [JMButton creatButton:CGRectMake(100, 100, 100, 100)];
sender1.ImageEdgInsets(20,0,60,60)
.TitleEdgInsets(0,63,100,23)
.ImagePrams(@"hehe.jpg",1)
.TitlePrams(@"呵呵达~",17,[UIColor redColor])
.ClickAction(^(JMButton* sender){
NSLog(@"Action---");
});
[self.view addSubview:sender1];
}
{
JMButton* sender2 = [JMButton creatButton:CGRectMake(100, 200, 100, 100)];
sender2.ImageEdgInsets(0,25,40,40).TitleEdgInsets(45,32,55,25).ImagePrams(@"empty_loding.png",1).TitlePrams(@"不开心!",16,[UIColor redColor]).ClickAction(^(JMButton* sender){
NSLog(@"Action---");
});
sender2.jmImagev.layer.cornerRadius = 10;
sender2.jmImagev.layer.masksToBounds = YES;
[self.view addSubview:sender2];
}
{
JMButton* sender3 = [JMButton creatButton:CGRectMake(120, 300, 80, 30)];
sender3.ImageEdgInsets(0,2.5,25,25)
.TitleEdgInsets(27,2.5,55,25)
.ImagePrams(@"111.jpg",1)
.TitlePrams(@"发微博",16,[UIColor blueColor])
.ClickAction(^(JMButton* sender){
NSLog(@"Action---");
});
[self.view addSubview:sender3];
}
//.h公开的方法属性
/** Imagev的frame,参数为“(x, y, w, h)” */
@property(nonatomic,copy)
JMButton* (^ImageEdgInsets)(float left,float top,float width,float height);
/** Title的frame,参数为“(x, y, w, h)” */
@property(nonatomic,copy)
JMButton* (^TitleEdgInsets)(float left,float top,float width,float height);
/** Imagev的参数值,“(NSString* imgName,UIViewContentMode mode)” */
@property(nonatomic,copy)
JMButton* (^ImagePrams)(NSString* imgName,UIViewContentMode mode);
/** Title的参数值,“(title, fountSize, textColor)” */
@property(nonatomic,copy)
JMButton* (^TitlePrams)(NSString* title,NSInteger fountSize,UIColor*textColor);
/** 点击事件,“(id target, SEL clickAction)” */
@property(nonatomic,copy)JMButton* (^ClickAction)(void(^)(JMButton* sender));
实现起来很简单,无非就是在view中创建 一个label 一个imageview
主要分享一下block实现链式的写法......
1.声明
//一个block属性返回值类型是 '自己'.
/** Imagev的参数值,“(NSString* imgName,UIViewContentMode mode)” */
@property(nonatomic,copy)
JMButton* (^ImagePrams)(NSString* imgName,UIViewContentMode mode);
(有两个参数,一个是name ,另一个就是imageView填充方式)
2.调用
这里block属性的调用.. 调用完之后 由于返回返回值是 自身 (self), 所以可以再调用其他block属性 实现一系列的调用
sender.ImagePrams(@"hehe.jpg",1);
3.随意链接
sender1.ImageEdgInsets(20,0,60,60)
.TitleEdgInsets(0,63,100,23)
.ImagePrams(@"hehe.jpg",1)
.TitlePrams(@"呵呵达~",17,[UIColor redColor]);
4, 点击事件---- block的嵌套
// 将点击block当另一block的参数传递出去 详情看下面.m的实现
/** 点击事件,“(id target, SEL clickAction)” */
@property(nonatomic,copy)JMButton* (^ClickAction)(void(^)(JMButton* sender));
最后贴上.m的主要代码...很简单 就是复写get方法 获取参数 赋值而已...
//block的getter
-(JMButton *(^)(NSString *, UIViewContentMode))ImagePrams{
return ^JMButton* (NSString* imgName,UIViewContentMode mode){
self.jmImagev.image = [UIImage imageNamed:imgName];
self.jmImagev.contentMode = mode;
return self;
};
}
//block的嵌套getter
-(JMButton *(^)(void(^block)(JMButton*)))ClickAction{
return ^JMButton* (void(^block)(JMButton* sender)){
if (!objc_getAssociatedObject(self, &clickActionKey)) {
UIGestureRecognizer* gesture = objc_getAssociatedObject(self, &clickActionKey);
if (!gesture) {
gesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(clickAction:)];
objc_setAssociatedObject(self, &clickActionKey, gesture, OBJC_ASSOCIATION_RETAIN);
[self addGestureRecognizer:gesture];
}
objc_setAssociatedObject(self, &blockActionKey, block, OBJC_ASSOCIATION_COPY);
}
return self;
};
}
主要还是链式 这种写法吧 希望以后有机会能排上用场..