解决方法
使用此签名在视图控制器中创建一个新方法： – (IBAction)buttonTapped：(id)sender.保存文件.转到Interface Builder并将按钮连接到此方法(按住Control并单击并从按钮拖动到视图控制器[可能是您的文件所有者]并选择-buttonTapped方法).
然后实现方法：
然后实现方法：
-(IBAction) buttonTapped:(id)sender {
// create a new UIView
UIView *newView = [[UIView alloc] initWithFrame:CGRectMake(10,10,100,100)];
// do something,e.g. set the background color to red
newView.backgroundColor = [UIColor redColor];
// add the new view as a subview to an existing one (e.g. self.view)
[self.view addSubview:newView];
// release the newView as -addSubview: will retain it
[newView release];
}