iOS创建不带nib文件的工程之四--在自定义view上添加按钮

1. 在HelloWorldViewController中添加属性pressMeButton并添加方法pressMeButtonPressed，修改HelloWorldViewController.h文件

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@property(strong, nonatomic) UIButton *pressMeButton;

-(IBAction)pressMeButtonPressed:(id)sender;

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2. 在HelloWorldViewController.m中的loadView方法中初始化按钮：

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//
创建按钮

pressMeButton = [UIButton
buttonWithType:UIButtonTypeRoundedRect];
[pressMeButton
setFrame:CGRectMake(10,
10,
40, 30)];
[pressMeButton
setTitle:@"PressMe"
forState:UIControlStateNormal];
[pressMeButton
addTarget:self
action:@selector(pressMeButtonPressed:)
forControlEvents:UIControlEventTouchUpInside];

// 显示按钮，将按钮添加到当前Controller的主View上
[self.view
addSubview:pressMeButton];
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3. 在HelloWorldViewController.m中实现方法pressMeButtonPressed方法：

#pragma mark - Event handler
-(IBAction)pressMeButtonPressed:(id)sender
{

NSLog(@"pressMe Button Pressed");
}

运行，效果如下图：



剩下的添加各种控件方法类似，大家可以自己尝试。