如果你只需要左边空白，你可以试试这个:

UItextField *textField = [[UITextField alloc] initWithFrame:...];
UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 10, textField.frame.size.height)];
leftView.backgroundColor = textField.backgroundColor;
textField.leftView = leftView;
textField.leftViewMode = UITextFieldViewModeAlways;

这对我很管用。我希望这能有所帮助。

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。

斯威夫特

 class TextField: UITextField {

    let inset: CGFloat = 8

    // placeholder position
    override func textRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.insetBy(dx: inset, dy: inset)
    }

    // text position
    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.insetBy(dx: inset, dy: inset)
    }
}

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);
}

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:

&

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。