Object-c 创建按钮

最新推荐文章于 2022-12-29 22:41:35 发布

转载最新推荐文章于 2022-12-29 22:41:35 发布 · 451 阅读

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原文链接：http://www.cnblogs.com/kingBook/p/6655229.html

本文详细介绍了如何在iOS应用开发中使用Objective-C动态创建UIButton，并设置了按钮的文字、颜色及背景图片，同时添加了点击事件处理。

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

//动态创建我们自己的按钮

//1.创建按钮（UIButton）
UIButton *button = [[UIButton alloc]init];

//2.设置按钮上显示的文字
[button setTitle:@"点我吧" forState:UIControlStateNormal];
[button setTitle:@"摸我干啥" forState:UIControlStateHighlighted];

//设置文字颜色
[button setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
[button setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];

//3.加载图片
UIImage *imgNormal = [UIImage imageNamed:@"btn_01"];
UIImage *imgHighlighted = [UIImage imageNamed:@"btn_02"];

//4.设置背景图片
[button setBackgroundImage:imgNormal forState:UIControlStateNormal];
[button setBackgroundImage:imgHighlighted forState:UIControlStateHighlighted];

//5.设置frame属性（位置和大小）
button.frame = CGRectMake(50, 50, 100, 100);

//6.通过代码为控件注册一个单机事件
[button addTarget:self action:@selector(buttonPrint) forControlEvents:UIControlEventTouchUpInside];


//7.把动态创建的控件添加到控制器的view中
[self.view addSubview:button];


}

- (void)buttonPrint{

   printf("测试打印");
}

- (void)didReceiveMemoryWarning {
   [super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end

转载于:https://www.cnblogs.com/kingBook/p/6655229.html