Ios UITextfiels界限,奇怪的行为
我不明白一个简单的代码会发生什么。我想调整Ios UITextfiels界限,奇怪的行为,ios,uitextfield,bounds,Ios,Uitextfield,Bounds,我不明白一个简单的代码会发生什么。我想调整UITextField的宽度,但这样做时,它也会更改其origin.x。我尝试了许多配置,但找不到解决方案 文本字段位于ui视图中: containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)]; containerView.backgroundColor = [UIColor whiteColor]; textfield = [[UITextField alloc]
UITextField
的宽度,但这样做时,它也会更改其origin.x
。我尝试了许多配置,但找不到解决方案
文本字段位于ui视图中
:
containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
containerView.backgroundColor = [UIColor whiteColor];
textfield = [[UITextField alloc] initWithFrame:CGRectMake(5,20,200,30)];
textfield.leftViewMode = UITextFieldViewModeAlways;
下面是更改其宽度的代码:
[UIView beginAnimations:nil context:nil];
textfield.bounds = CGRectMake(textfield.bounds.origin.x,
textfield.bounds.origin.y,
textfield.bounds.size.width + 110,
textfield.bounds.size.height);
[UIView commitAnimations];
每次,origin.x
都会更改为-55(但NSLog
打印0)。你知道吗?我希望始终保持相同的origin.x
感谢您的帮助。请尝试更改帧,而不是更改边界:
[UIView beginAnimations:nil context:nil];
textfield.frame= CGRectMake(textfield.frame.origin.x,
textfield.frame.origin.y,
textfield.frame.size.width + 110,
textfield.frame.size.height);
[UIView commitAnimations];
从文档中:
Changing the bounds size grows or shrinks the view relative to its center point
这似乎是你的问题所在