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。

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:

&

抛出另一个不需要子类化的解决方案:

UITextField *txtField = [UITextField new];
txtField.borderStyle = UITextBorderStyleRoundedRect;

// grab BG layer
CALayer *bgLayer = txtField.layer.sublayers.lastObject;
bgLayer.opacity = 0.f;

// add new bg view
UIView *bgView = [UIView new];
bgView.backgroundColor = [UIColor whiteColor];
bgView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
bgView.userInteractionEnabled = NO;

[txtField addSubview: bgView];
[txtField sendSubviewToBack: bgView];

在iOS 7和iOS 8上测试。这两个工作。苹果仍然有可能修改UITextField的层层次结构，把事情搞砸了。

使用textRectForBounds:是正确的方法。我已经在我的子类中包装了这个，所以你可以简单地使用textEdgeInsets。看到SSTextField。

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);
            }
        }
}

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;