ios - 在用户点击屏幕的任何位置创建一个 UITextField

Question

我正在制作一个 iPad 应用程序，它能够识别用户在 View 中点击的位置，并在该位置创建 UITextField。对此进行编程最有效的方法是什么？它适用于多个文本字段吗？

Answer 1

我认为就 UI 而言，您的想法听起来有点奇怪，但您可能想使用 UITapGestureRecognizer。代码看起来像这样:

// In viewDidLoad
UITapGestureRecognizer *tapRecognizer = [UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tappedInView:)];
[self.view addGestureRecognizer:tapRecognizer];


- (void)tappedInView:(UIGestureRecognizer *)gestureRecognizer
{
     CGPoint pointForTextField = [gestureRecognizer locationInView:gestureRecognizer.view];
     // Add the UITextField to your view. You could use the pointForTextField as either the origin or center of the text field
    UITextField *textField = [UITextField alloc] initWithFrame:CGRectMake(pointForTextField.x,pointForTextField.y,100,44)];
    [self.view addSubview:textField];
}