如何通过代码触发按钮，在 Xcode 中
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How to trigger a button through code, in Xcode
提问by Jesse
In an iPhone app I am working on, I need to place buttons in a UIScrollView, but because of the fact that I need to place so many buttons to scroll through, I cannot place them in interface builder. Therefore I am having to put them all in the Scroll View through my code. How can I create a button in code, and then use it to trigger an action.
在我正在开发的 iPhone 应用程序中，我需要在 UIScrollView 中放置按钮，但由于我需要放置如此多的按钮来滚动浏览，因此我无法将它们放置在界面构建器中。因此，我不得不通过我的代码将它们全部放在滚动视图中。如何在代码中创建一个按钮，然后用它来触发一个动作。
回答by Joshua Nozzi
See "How do I create a basic UIButton programmatically". See also the Target / Action mechanism.
请参阅“如何以编程方式创建基本的 UIButton”。另请参阅目标/操作机制。
回答by kgutteridge
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
//position button
myButton.frame = CGRectMake(50, 50, 50, 50);
[myButton setTitle:@"Click" forState:UIControlStateNormal];
// add targets and actions
[myButton addTarget:self action:@selector(myButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
// add to a view
[self.view addSubview:myButton];
Further information here
更多信息在这里
