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
快速解决没有子类&也检查
extension UITextField {
@IBInspectable var textInsets: CGPoint {
get {
return CGPoint.zero
}
set {
layer.sublayerTransform = CATransform3DMakeTranslation(newValue.x, newValue.y, 0);
}
}
}
其他回答
我发现了罗伯托发布的选项。buratti是最快的解决方案,这里是Swift:
let leftView = UIView(frame: CGRect(x: 0, y: 0, width: 10, height: textField.frame.size.height))
leftView.backgroundColor = textField.backgroundColor
textField.leftView = leftView
textField.leftViewMode = UITextField.ViewMode.always
我通常尽量避免子类化,但如果你已经:
// add a property
@property (nonatomic) UIEdgeInsets edgeInsets;
// and override:
- (CGRect)textRectForBounds:(CGRect)bounds
{
return [super textRectForBounds:UIEdgeInsetsInsetRect(bounds, self.edgeInsets)];
}
- (CGRect)editingRectForBounds:(CGRect)bounds
{
return [super editingRectForBounds:UIEdgeInsetsInsetRect(bounds, self.edgeInsets)];
}
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 );
}
Swift 3 /可在界面构建器中设计/单独的水平和垂直昆虫/可用
@IBDesignable
class TextFieldWithPadding: UITextField {
@IBInspectable var horizontalInset: CGFloat = 0
@IBInspectable var verticalInset: CGFloat = 0
override func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: horizontalInset, dy: verticalInset)
}
override func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: horizontalInset , dy: verticalInset)
}
override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: horizontalInset, dy: verticalInset)
}
}
用法:
&
如果你有一个明确的按钮,接受的答案将不适合你。我们还应该警惕苹果在未来通过调用super来改变事情。
因此,为了确保文本不会与清除按钮重叠,让我们先从super中获取“默认”值,然后根据需要进行调整。
这段代码将在文本框的顶部、左侧和底部添加一个10px的insets:
@interface InsetTextField : UITextField
@end
@implementation InsetTextField
// Placeholder position
- (CGRect)textRectForBounds:(CGRect)bounds {
CGRect rect = [super textRectForBounds:bounds];
UIEdgeInsets insets = UIEdgeInsetsMake(10, 10, 10, 0);
return UIEdgeInsetsInsetRect(rect, insets);
}
// Text position
- (CGRect)editingRectForBounds:(CGRect)bounds {
CGRect rect = [super editingRectForBounds:bounds];
UIEdgeInsets insets = UIEdgeInsetsMake(10, 10, 10, 0);
return UIEdgeInsetsInsetRect(rect, insets);
}
// Clear button position
- (CGRect)clearButtonRectForBounds:(CGRect)bounds {
CGRect rect = [super clearButtonRectForBounds:bounds];
return CGRectOffset(rect, -5, 0);
}
@end
注意:UIEdgeInsetsMake接受参数的顺序是:上,左,下,右。