uibutton的常用属性

//UIButton
    UIButton *button=[UIButton buttonWithType:UIButtonTypeSystem];
    button.frame=CGRectMake(100, 100, 100, 100);
    button.backgroundColor=[UIColor yellowColor];
    
    //外观控制
    [button setTitle:@"按钮" forState:UIControlStateNormal];
    
    
    //加背景
   // [button setBackgroundImage:[UIImage imageNamed:@"1.png"] forState:UIControlStateNormal];
    
    //设置文字颜色
    [button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
        //第二种改变字体颜色方法
    button.tintColor=[UIColor blackColor];//渲染颜色
    
    //响应事件
    [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
    
    [bgView addSubview:button];
    [bgView release];
    

//设置
    //文字
    [button setTitle:@"按钮" forState:UIControlStateNormal];
    //文字颜色
    [button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    //背景图片
    [button setBackgroundImage:[UIImage imageNamed:@"1.pug"] forState:UIControlStateNormal];
    //添加事件
    [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
    //添加前景图片(需要镂空png图片)
    [button setImage:[UIImage imageNamed:@"2.png"] forState:UIControlStateNormal];
    
    //获取button上的文字
    NSString *butString = [button titleForState:UIControlStateNormal];
    NSLog(@"文字:%@",butString);
    //获取button上文字的颜色
    UIColor *buttonColor = [button titleColorForState:UIControlStateNormal];
    NSLog(@"%@",buttonColor);
    //获取前景图片
    UIImage *buttonImage = [button imageForState:UIControlStateNormal];
    //获取背景图片
    UIImage *butBgImage = [button backgroundImageForState:UIControlStateNormal];
    
    [self.window addSubview:button];
    [bgview release];
    
    */