重写 button 的创建方法

重写 button 的创建方法

//sxc时时改变
// self.videoM.progress = progress;
// if ([self.videoM.downloadStr
isEqualToString:@"100%"]) {
// self.downloadBtn.titleLabel.
text = @"已缓存";

• //  }else{

• //  self.downloadBtn.titleLabel.text
  = self.videoM.downloadStr;

// NSLog(@"%@=---------",self.v
ideoM.downloadStr);
// }//有两种重写方法,主要看你想怎么去创建

这个button
-(void)setFrame:(CGRect)frame
{

[super setFrame:frame];
[self.icon removeFromSuperview];
[self.textLabel removeFromSuperview];
[self.iconSelected

removeFromSuperview];

//创建一个正方形 的imageView (只读的不能
self. set方法不可以)

_icon= [[UIImageViewalloc]
initWithFrame:CGRectMake(0, 0,
frame.size.height, frame.size.height)];

[self addSubview:self.icon];

_iconSelected= [[UIImageViewalloc]
initWithFrame:self.icon.bounds];

self.iconSelected.hidden = YES;
[self addSubview:self.iconSelected];

_textLabel= [[UILabelalloc]
initWithFrame:CGRectMake(frame.size.height,
0, frame.size.width- frame.size.height,
frame.size.height)];

_textLabel.textColor= [UIColor
whiteColor];

_textLabel.font= [UIFont
systemFontOfSize:14];

[self addSubview:self.textLabel];
//第二种

//装逼的创建方法 只执行一次,单例方法也可用

//
//
//
initWithFrame:CGRectMake(0, 0,
frame.size.height, frame.size.height)];

• //  [self addSubview:self.icon];
  //

  //

• //  _textLabel = [[UILabel alloc]
  initWithFrame:CGRectMake(frame.size.height,
  0, frame.size.width - frame.size.height,
  frame.size.height)];

// [self
addSubview:self.textLabel];
//

static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{

_icon = [[UIImageView alloc]

// });

}

#pragma mark 重写selected方法,做图片更换
- (void)setSelected:(BOOL)selected
{

//父类怎么做 还怎么做我们只是在它原有的基础
上添加自己的方法

[super setSelected:selected];
//根据selected属性对图片做修改
if(selected) {

self.iconSelected.hidden = NO;

self.icon.hidden = YES;
}else

{
self.iconSelected.hidden = YES;
self.icon.hidden = NO;

}
}

//使用alloc创建
-
(instancetype)initWithFrame:(CGRect)frame
{

self= [superinitWithFrame:frame];
if(self) {

}
return self;

}