- (void)setTitle:(NSString *)title forState:(UIControlState)state;
//设置标题
- (void)setTitleColor:(UIColor *)color forState:(UIControlState)state;
//设置标题颜色
- (void)setTitleShadowColor:(UIColor *)color forState:
(UIControlState)state;//设置标题阴影
- (void)setImage:(UIImage *)image forState:(UIControlState)state;
//设置图片
- (void)setBackgroundImage:(UIImage *)image forState:(UIControlState)state;//设置图片背景
UIButton
*button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; button.frame = CGRectMake(100, 150, 60, 40);//设置按钮位置大小
[button setTitle:@"Normal" forState:UIControlStateNormal];
//设置常规下按钮的标题
[button setTitle:@"Highlight" forState:UIControlStateHighlighted];
//设置高亮状态下的标题
[button addTarget:self action:@selector(didButtonClicked)
forControlEvents:UIControlEventTouchUpInside];
//设置按钮的点击事件
[self.view addSubview:button];//显示在页面上
