电路设计

封装按钮

2019-07-14 10:42发布

站内文章 / 电路设计
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如果是重复的用代码生成按钮，可以将这个工作封装到一个函数内。
如下： // 创建按钮 UIButton *btn = [[UIButton alloc] init]; // 设置背景图片 [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal]; [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted]; [btn setBackgroundImage:[UIImage imageNamed:disableImage] forState:UIControlStateDisabled]; // 设置位置和尺寸 btn.frame = frame; // 监听按钮点击 [btn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside]; // 添加按钮 [self.view addSubview:btn]; 将上面的代码封装到一个函数里面 #pragma mark 添加按钮 - (void)addButtonWithImage:(NSString *)image highImage:(NSString *)highImage disableImage:(NSString *)disableImage frame:(CGRect)frame action:(SEL)action { // 创建按钮 UIButton *btn = [[UIButton alloc] init]; // 设置背景图片 [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal]; [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted]; [btn setBackgroundImage:[UIImage imageNamed:disableImage] forState:UIControlStateDisabled]; // 设置位置和尺寸 btn.frame = frame; // 监听按钮点击 [btn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside]; // 添加按钮 [self.view addSubview:btn]; } 实现这个代码如下； [self addButtonWithImage:@"add" highImage:@"add_highlighted" disableImage:@"add_disabled" frame:CGRectMake(30, 30, 50, 50) action:@selector(add)];

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