ios--按钮控件

最新推荐文章于 2022-07-19 12:25:08 发布

原创最新推荐文章于 2022-07-19 12:25:08 发布 · 468 阅读

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这篇博客介绍了iOS中UIButton的用途，详细讲解了它的常用属性，包括正常、高亮、禁用和选中四种状态，并提供了创建及设置按钮属性的示例代码。

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一、UIButton

作用：响应用户的点击事件

常用属性

二、按钮的状态

UIButton的状态

UIControlStateNormal //正常状态

UIControlStateHighlighted //高亮状态

UIControlStateDisabled //禁用状态

UIControlStateSelected //选中状态

UIControlStateApplication

UIControlStateReserved

三、示例代码

创建UIButton并设置其属性

<pre name="code" class="objc"><pre name="code" class="objc"><pre name="code" class="objc">    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.backgroundColor = [UIColor purpleColor];
    //工厂方法
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];<span style="font-family: Arial, Helvetica, sans-serif;">    </span>

//禁用按钮

button.enabled = NO;

//按钮选中

button.selected = YES; //设置标题,状态正常 [button setTitle:@"normal" forState:UIControlStateNormal]; //设置标题,状态高亮 [button setTitle:@"highligh" forState:UIControlStateHighlighted]; //设置标题,状态禁用 [button setTitle:@"disable" forState:UIControlStateDisabled]; //设置标题,状态选中 [button setTitle:@"select" forState:UIControlStateSelected];

    <span style="font-family: Arial, Helvetica, sans-serif;">//设置title的颜色</span>
    [button setTitleColor:[UIColor redColor] forState:<span style="font-family: Arial, Helvetica, sans-serif;">forState:UIControlStateNormal</span>]
    //设置frame,与按钮的类型
    button.frame = CGRectMake(90, 100, 140, 40);
    [self.window addSubview:button];
    [self.window makeKeyAndVisible];
    return YES;

    //设置背景图片
    [button setBackgroundImage:[UIImage imageNamed:@"love_normal"] forState:UIControlStateNormal];
    [button setBackgroundImage:[UIImage imageNamed:@"love_normal"] forState:UIControlStateSelected];
    //设置图片
    [button setImage:[UIImage imageNamed:@"love_normal"] forState:UIControlStateNormal];
    [button setImage:[UIImage imageNamed:@"love_normal"] forState:UIControlStateSelected];