iOS开发中一些手写控件及其相关属性的使用

    
    //2.设置对象的各项属性
    //(1)位置等通用属性设置
    headbtn.frame=CGRectMake(100, 100, 100, 100);
    
    //(2)设置普通状态下按钮的属性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"i"] forState:UIControlStateNormal];
    [headbtn setTitle:@"点我！" forState:UIControlStateNormal];
    [headbtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    
    //(3)设置高亮状态下按钮的属性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"a"] forState:UIControlStateHighlighted];
    [headbtn setTitle:@"还行吧~" forState:UIControlStateHighlighted];
    [headbtn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
    
    //3.把对象添加到视图中展现出来
    [self.view addSubview:headbtn];
    //注意点！
    self.headImageView=headbtn;

    
    //二、写四个控制图片左右上下移动方向的按钮控件
    
    /**================向上的按钮=====================*/
    //1.创建按钮对象
    UIButton *topbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    
    //2.设置对象的属性
    topbtn.frame=CGRectMake(100, 250, 40, 40);
    [topbtn setBackgroundImage:[UIImage imageNamed:@"top_normal"] forState:UIControlStateNormal];
    [topbtn setBackgroundImage:[UIImage imageNamed:@"top_highlighted"] forState:UIControlStateHighlighted];
    [topbtn setTag:1];
    //3.把控件添加到视图中
    [self.view addSubview:topbtn];
    
    //4.按钮的单击控制事件
    [topbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
    
    
      /**================向下的按钮=====================*/
    //1.创建按钮对象
    UIButton *downbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.设置对象的属性
    downbtn.frame=CGRectMake(100, 350, 40, 40);
    [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_normal"] forState:UIControlStateNormal];