iOS7上的UITextfield leftView / rightView填充

问题描述：

iOS7上的UITextField的leftView和rightView视图非常接近文本域边框。

The leftView and rightView views of an UITextField on iOS7 are really close to the textfield border.

如何为这些项添加一些（水平）填充？

How may I add some (horizontal) padding to those items?

我尝试修改框架，但没有工作

I tried modifying the frame, but did not work

uint padding = 10;//padding for iOS7
UIImageView * iconImageView = [[UIImageView alloc] initWithImage:iconImage];    
iconImageView.frame = CGRectMake(0 + padding, 0, 16, 16);
textField.leftView = iconImageView;

请注意，我没有兴趣在textfield的文本中添加填充，就像这样使用UITextBorderStyleNone设置UITextField的填充

Please, note that I'm not interested in adding padding to the textfield's text, like this Set padding for UITextField with UITextBorderStyleNone

答

我自己正在研究并使用这个解决方案：

Was just working on this myself and used this solution:

- (CGRect) rightViewRectForBounds:(CGRect)bounds {

    CGRect textRect = [super rightViewRectForBounds:bounds];
    textRect.origin.x -= 10;
    return textRect;
}

这会将图像从右边移动10而不是图像挤在iOS 7中的边缘。

This will move the image over from the right by 10 instead of having the image squeezed up against the edge in iOS 7.

此外，这是在 UITextField 的子类中，可以是创建者：

Additionally, this was in a subclass of UITextField, which can be created by:

创建一个新文件，该文件是 UITextField 的子类，而不是default NSObject

添加名为的新方法 - （id）initWithCoder：（NSCoder *）编码器设置图像

Create a new file that's a subclass of UITextField instead of the default NSObject
Add a new method named - (id)initWithCoder:(NSCoder*)coder to set the image

- (id)initWithCoder:(NSCoder*)coder {
    self = [super initWithCoder:coder];

    if (self) {

        self.clipsToBounds = YES;
        [self setRightViewMode:UITextFieldViewModeUnlessEditing];

        self.leftView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"textfield_edit_icon.png"]];
    }

    return self;
}

您可能需要导入 #import < QuartzCore / QuartzCore.h>

添加 rightViewRectForBounds 方法上面

在Interface Builder中，单击要子类化的TextField并将class属性更改为此新子类的名称

In Interface Builder, click on the TextField you would like to subclass and change the class attribute to the name of this new subclass

iOS7上的UITextfield leftView / rightView填充

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