基本属性
1.frame;坐标;title;titlecolor;字体颜色;titleShadowColor:字体阴影;image:图片; backgroundImage:背景图片;
2.forstate状态:这个参数决定了标题、图像或其他属性将在何种状态下显现
UIControlStateNormal:常态
UIControlStateHightlighted: is set 高亮
UIControlStateDisabled:禁用
UIControlStateSelected:中
UIControlStateApplicationg:plication use 当应用程序标志使用时
UIControlStateReserview;为内部框架预留的
3.当按钮高亮或者禁用,UIButton类可以调整自己的外观,下面几个属性可以让你按照需要对按钮的外观进行微调
adjustsImageWhenHightlighted:默认情况下,在按钮被禁用时,图像会被画的颜色深些
adjustsImageWhendisabled:默认情况下,按钮在被禁用时,图像会被画的颜色淡一些
showsTouchWhenHightlighted;这个属性设置为YES,可使按钮在按下时发光
重写绘制行为
backgroundRectForBounds:指定背景边界
contentRectForBounds:指定内容边界
titleRectForContentRent:指定文字标题边界
imageRectForContentRect;指定按钮图像边界
添加动作
-addTarget;action:forControlEvents:
初始化UIButton控件显示在屏幕上
UIButton *button = [[UIbutton alloc] initWithFrame:CGRectMake(10,10,10,10)];
[button setBackgroundColor: [UIColor blueColor]];
[button setTitle:@"view" forState :UIControlStateNormal];
[self.view addSubview :button];
2.UIButton的一个类方法ButtonWithType
UIButton *button = [UIButton buttonWithType: UIButtonTypeRoundedRect];
[button setFrame:CGRectMake(10,10,10,10)];
[button setBackgroundColor: [UIColor blueColor]];
[button setTitle: @"view" forState :UIControlStateNormal];
Button的响应事件
[button addTarget:self action:@selector(haoshuaihaofan:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview: button];