我想插入一个UITextField的文本。
这可能吗?
我想插入一个UITextField的文本。
这可能吗?
当前回答
如果你想改变TOP和LEFT缩进只有这样
//占位符
- (CGRect)textRectForBounds:(CGRect)bounds {
CGRect frame = bounds;
frame.origin.y = 3;
frame.origin.x = 5;
bounds = frame;
return CGRectInset( bounds , 0 , 0 );
}
//文本位置
- (CGRect)editingRectForBounds:(CGRect)bounds {
CGRect frame = bounds;
frame.origin.y = 3;
frame.origin.x = 5;
bounds = frame;
return CGRectInset( bounds , 0 , 0 );
}
其他回答
这是我发现的最快的方法,不需要做任何子类:
UIView *spacerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 10., 10.)];
[textField setLeftViewMode:UITextFieldViewModeAlways];
[textField setLeftView:spacerView];
迅速:
let spacerView = UIView(frame:CGRect(x:0, y:0, width:10, height:10))
textField.leftViewMode = UITextFieldViewMode.Always
textField.leftView = spacerView
对于那些正在寻找更简单解决方案的人来说。
在UIView中添加UITextField。为了模拟文本框周围的插入,我保持左10像素,宽度比视图小20像素。对于文本框周围的圆角边框,请使用视图的边框
viewBG.layer.cornerRadius = 8.0;
viewBG.layer.borderColor = [UIColor darkGrayColor].CGColor;
viewBG.layer.borderWidth = 1.0;
重写-textRectForBounds:只会改变占位符文本的插入。要改变可编辑文本的插入,你还需要重写-editingRectForBounds:
// placeholder position
- (CGRect)textRectForBounds:(CGRect)bounds {
return CGRectInset(bounds, 10, 10);
}
// text position
- (CGRect)editingRectForBounds:(CGRect)bounds {
return CGRectInset(bounds, 10, 10);
}
如果你想改变TOP和LEFT缩进只有这样
//占位符
- (CGRect)textRectForBounds:(CGRect)bounds {
CGRect frame = bounds;
frame.origin.y = 3;
frame.origin.x = 5;
bounds = frame;
return CGRectInset( bounds , 0 , 0 );
}
//文本位置
- (CGRect)editingRectForBounds:(CGRect)bounds {
CGRect frame = bounds;
frame.origin.y = 3;
frame.origin.x = 5;
bounds = frame;
return CGRectInset( bounds , 0 , 0 );
}
你必须子类化是荒谬的,因为UITextField已经实现了方法,就像@Adam Waite指出的那样。下面是一个快速扩展,它公开了一个工厂方法,也可以在我们的categories repo中使用:
private class InsetTextField: UITextField {
var insets: UIEdgeInsets
init(insets: UIEdgeInsets) {
self.insets = insets
super.init(frame: CGRectZero)
}
required init(coder aDecoder: NSCoder) {
fatalError("not intended for use from a NIB")
}
// placeholder position
override func textRectForBounds(bounds: CGRect) -> CGRect {
return super.textRectForBounds(UIEdgeInsetsInsetRect(bounds, insets))
}
// text position
override func editingRectForBounds(bounds: CGRect) -> CGRect {
return super.editingRectForBounds(UIEdgeInsetsInsetRect(bounds, insets))
}
}
extension UITextField {
class func textFieldWithInsets(insets: UIEdgeInsets) -> UITextField {
return InsetTextField(insets: insets)
}
}