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问题描述
我正在尝试使用代码即时"创建一个按钮，并且我希望该按钮能够执行转到不同的控制器.据我所知，以编程方式创建 segue 是不可能的，但是如果创建的按钮不在我的故事板上，我怎么能通过呢?
I am trying to create a button 'on the fly' using code, and i want that button to perform segue to a different controller. As far as i know, creating segue programmatically is not possible, but how can i get pass that if the created button is not on my storyboard?
这是创建按钮的代码:
- (void)addButton:(UIView*)view inLocation:(CGPoint)point
{
UIButton *but=[UIButton buttonWithType:UIButtonTypeRoundedRect];
but.frame= CGRectMake(point.x, point.y,30,30);
[but setTitle:@"CHOOSE" forState:UIControlStateNormal];
// The nilSymbol should call a method that will perform the segue
[but addTarget:self action:@selector(nilSymbol) forControlEvents:UIControlEventTouchUpInside];
[view addSubview:but];
}
有什么选择吗?
推荐答案
在 Interface Builder 中，创建一个 segue.由于您无法将 segue 连接到按钮(它还不存在)，只需将 segue 连接到起始 ViewController.然后，当您创建按钮时:
In Interface Builder, create a segue. Since you can't connect the segue to the button (it doesn't exist yet), simply connect the segue to the starting ViewController. Then, when you create the button:
// ....
[but addTarget:self action:@selector(someMethod) forControlEvents:UIControlEventTouchUpInside];
// ....
而在一些方法中:
-(void)someMethod
{
[self performSegueWithIdentifier:@"segueIdentifier" sender:self];
}
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