为什么我不能以编程方式更改UITextField的宽度？

Question

I am trying to programmatically change the width of a UITextField using the following code:

myText.frame = CGRectMake(myText.frame.origin.x, myText.frame.origin.y, 280 ,myText.frame.size.height);

The code above is executed on a "touch up inside" button action.

myText has its border style property set to UITextBorderStyleNone

Any ideas are welcome!

Answer 1

如果您尝试以编程方式设置框架，只需禁用.xib的自动布局

Answer 2

My first thought is that either you never linked the IBAction to the UIButton, or there is no IBOutlet pointing to the UITextField.

You can verify that the IBAction is getting called on button press simply by adding an NSLog statement to it, or you can check that both are linked from the "Connections Inspector" in Interface Builder.

Side note Since your text field is set to have no border, it is possible that you just can't tell it is growing. To verify, I would trying setting the text field's background color to something obvious.