使用UITextBorderStyleNone为UITextField设置填充

Question

我想为我使用自定义背景UITextFields.这工作正常,除了我必须使用UITextBorderStyleNone它使它看起来漂亮的事实.这会强制文本粘在左边而不进行任何填充.

我可以手动设置填充,使其看起来类似于UITextBorderStyleRoundedRect使用我的自定义背景图像吗？

Answer 1

我找到了一个整洁的小黑客为这种确切的情况设置左边填充.

基本上,您将leftView属性设置为UITextField您想要的填充大小的空视图:

UIView *paddingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, 20)];
textField.leftView = paddingView;
textField.leftViewMode = UITextFieldViewModeAlways;

对我来说就像一个魅力!

在Swift 3/Swift 4中,可以通过这样做来完成

let paddingView: UIView = UIView(frame: CGRect(x: 0, y: 0, width: 5, height: 20))
textField.leftView = paddingView
textField.leftViewMode = .always

Answer 2

我创建了这个类别实现并将其添加到.m文件的顶部.

@implementation UITextField (custom)
    - (CGRect)textRectForBounds:(CGRect)bounds {
        return CGRectMake(bounds.origin.x + 10, bounds.origin.y + 8,
                          bounds.size.width - 20, bounds.size.height - 16);
    }
    - (CGRect)editingRectForBounds:(CGRect)bounds {
        return [self textRectForBounds:bounds];
    }
@end

基于Piotr Blasiak提供的链接.它似乎比创建一个全新的子类更简单,也更简单,然后添加额外的UIView.但是,似乎缺少一些东西,因为无法控制文本字段中的填充.

Swift 2解决方案:

class CustomTextField: UITextField {
    struct Constants {
        static let sidePadding: CGFloat = 10
        static let topPadding: CGFloat = 8
    }

    override func textRect(forBounds bounds: CGRect) -> CGRect {
        return CGRect(
            x: bounds.origin.x + Constants.sidePadding,
            y: bounds.origin.y + Constants.topPadding,
            width: bounds.size.width - Constants.sidePadding * 2,
            height: bounds.size.height - Constants.topPadding * 2
        )
    }

    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return self.textRect(forBounds: bounds)
    }
}

Answer 3

适用于Xcode> 6的Swift 3版本,您可以在其中编辑Interface Builder/Storyboard中的插入值.

import UIKit

@IBDesignable
class FormTextField: UITextField {

    @IBInspectable var inset: CGFloat = 0

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

    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return textRect(forBounds: bounds)
    }

}

Answer 4

编辑:仍适用于iOS 11.3.1

在iOS 6 myTextField.leftView = paddingView;中导致问题

这解决了这个问题

myTextField.layer.sublayerTransform = CATransform3DMakeTranslation(5, 0, 0)

对于右对齐文本字段CATransform3DMakeTranslation(-5, 0, 0),请在评论中使用latenitecoder

Answer 5

向UITextField添加填充的一种好方法是子类化并添加edgeInsets属性.然后设置edgeInsets,并相应地绘制UITextField.这也可以使用自定义leftView或rightView集正常运行.

OSTextField.h

#import <UIKit/UIKit.h>

@interface OSTextField : UITextField

@property (nonatomic, assign) UIEdgeInsets edgeInsets;

@end

OSTextField.m

#import "OSTextField.h"

@implementation OSTextField

- (id)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if (self) {
        self.edgeInsets = UIEdgeInsetsZero;
    }
    return self;
}

-(id)initWithCoder:(NSCoder *)aDecoder{
    self = [super initWithCoder:aDecoder];
    if(self){
        self.edgeInsets = UIEdgeInsetsZero;
    }
    return self;
}

- (CGRect)textRectForBounds:(CGRect)bounds {
    return [super textRectForBounds:UIEdgeInsetsInsetRect(bounds, self.edgeInsets)];
}

- (CGRect)editingRectForBounds:(CGRect)bounds {
    return [super editingRectForBounds:UIEdgeInsetsInsetRect(bounds, self.edgeInsets)];
}

@end

Answer 6

只需将UITextField子类化为:

@implementation DFTextField


- (CGRect)textRectForBounds:(CGRect)bounds
{
    return CGRectInset(bounds, 10.0f, 0);
}

- (CGRect)editingRectForBounds:(CGRect)bounds
{
    return [self textRectForBounds:bounds];
}


@end

这会在两侧增加10个点的水平填充.

Answer 7

目标C代码

MyTextField.h

#import <UIKit/UIKit.h>

@interface MyTextField : UITextField

@property (nonatomic) IBInspectable CGFloat padding;

@end

MyTextField.m

#import "MyTextField.h"

IB_DESIGNABLE
@implementation MyTextField

@synthesize padding;

-(CGRect)textRectForBounds:(CGRect)bounds{
    return CGRectInset(bounds, padding, padding);
}

-(CGRect)editingRectForBounds:(CGRect)bounds{
    return [self textRectForBounds:bounds];
}

@end

Answer 8

根据Evil Trout的回答,您可能想要创建一个类别,以便在多个应用程序中更容易使用.

头文件:

@interface UITextField (PaddingText)

-(void) setLeftPadding:(int) paddingValue;

-(void) setRightPadding:(int) paddingValue;
@end

实施文件:

#import "UITextField+PaddingText.h"

@implementation UITextField (PaddingText)

-(void) setLeftPadding:(int) paddingValue
{
    UIView *paddingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, paddingValue, self.frame.size.height)];
    self.leftView = paddingView;
    self.leftViewMode = UITextFieldViewModeAlways;
}

-(void) setRightPadding:(int) paddingValue
{
    UIView *paddingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, paddingValue, self.frame.size.height)];
    self.rightView = paddingView;
    self.rightViewMode = UITextFieldViewModeAlways;
}

@end

用法示例

#import "UITextField+PaddingText.h"

[self.YourTextField setLeftPadding:20.0f];

希望它可以帮助你们

干杯

Answer 9

1. 创建文本字段自定义

PaddingTextField.swift

import UIKit
class PaddingTextField: UITextField {

@IBInspectable var paddingLeft: CGFloat = 0
@IBInspectable var paddingRight: CGFloat = 0

override func textRectForBounds(bounds: CGRect) -> CGRect {
    return CGRectMake(bounds.origin.x + paddingLeft, bounds.origin.y,
        bounds.size.width - paddingLeft - paddingRight, bounds.size.height);
}

override func editingRectForBounds(bounds: CGRect) -> CGRect {
    return textRectForBounds(bounds)
}}

2. 将textfield类设置为PaddingTextField并根据需要自定义填充

3. 好好享受

Answer 10

Swift版本:

extension UITextField {
    @IBInspectable var padding_left: CGFloat {
        get {
            LF.log("WARNING no getter for UITextField.padding_left")
            return 0
        }
        set (f) {
            layer.sublayerTransform = CATransform3DMakeTranslation(f, 0, 0)
        }
    }
}

这样你就可以在IB中分配价值了

Answer 11

您无法设置填充.而是有一个UIView具有你的背景图像和UITextField它的内部.同样设置UITextField宽度UIViewWidth-(paddingSize x 2)和高度,然后将其设置为点paddingSize,paddingSize.

Answer 12

我基于Nate的解决方案,但后来我发现当你使用leftView/rightView属性时这会导致问题,所以它更好地调整了super的实现,因为它会考虑左/右视图.

- (CGRect)textRectForBounds:(CGRect)bounds {
    CGRect ret = [super textRectForBounds:bounds];
    ret.origin.x = ret.origin.x + 5;
    ret.size.width = ret.size.width - 10;
    return ret;
}

- (CGRect)editingRectForBounds:(CGRect)bounds {
    return [self textRectForBounds:bounds];
}

Answer 13

只是像这样继承UITextField(Swift版本):

import UIKit

class CustomTextField: UITextField {

    override func textRectForBounds(bounds: CGRect) -> CGRect {
       return CGRectInset(bounds, 25.0, 0)
    }

    override func editingRectForBounds(bounds: CGRect) -> CGRect {
       return self.textRectForBounds(bounds)
    }

}

这增加了两侧25.0点的水平填充.

Answer 14

Swift 3的更新版本

@IBDesignable
class FormTextField: UITextField {

    @IBInspectable var paddingLeft: CGFloat = 0
    @IBInspectable var paddingRight: CGFloat = 0

    override func textRect(forBounds bounds: CGRect) -> CGRect {
        return CGRect(x: bounds.origin.x + paddingLeft, y: bounds.origin.y, width: bounds.size.width - paddingLeft - paddingRight, height: bounds.size.height)
    }

    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return textRect(forBounds: bounds)
    }
}

Answer 15

使用UITextBorderStyleNone为UITextField设置填充：Swift

基于@Evil Trout投票最多的答案，我在ViewController类中创建了一个自定义方法，如下所示：

- (void) modifyTextField:(UITextField *)textField
{
    UIView *paddingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, 20)];
    textField.leftView = paddingView;
    textField.leftViewMode = UITextFieldViewModeAlways;
    textField.rightView = paddingView;
    textField.rightViewMode = UITextFieldViewModeAlways;

    [textField setBackgroundColor:[UIColor whiteColor]];
    [textField setTextColor:[UIColor blackColor]];
}

现在，我可以在内部调用该方法（viewDidLoad方法），并将我的任何TextField发送到该方法，并为左右添加填充，并通过仅编写一行代码来为文本和背景色赋值，如下所示：

[self modifyTextField:self.firstNameTxtFld];

这在iOS 7上完美运行！我知道添加过多的View可能会使该类加载起来更重。但是，当担心其他解决方案中的困难时，我发现自己更偏向于这种方法，并且使用这种方式更加灵活。;）

感谢您的骇客“邪恶鳟鱼”！（弓）

我以为应该用Swift更新此答案的代码片段：

由于Swift允许我们为现有类编写扩展，因此我们以这种方式编写它。

extension UITextField {
    func addPaddingToTextField() {
        let paddingView: UIView = UIView.init(frame: CGRectMake(0, 0, 8, 20))
        self.leftView = paddingView;
        self.leftViewMode = .Always;
        self.rightView = paddingView;
        self.rightViewMode = .Always;


        self.backgroundColor = UIColor.whiteColor()
        self.textColor = UIColor.blackColor()
    }
}

用法：

self.firstNameTxtFld.addPaddingToTextField()

希望这对其他人有所帮助！
干杯!

Answer 16

以下是如何在SWIFT中实现这一目标

@IBOutlet weak var yourTextField: UITextField!

override func viewDidLoad() {
super.viewDidLoad()
let paddingView = UIView(frame: CGRectMake(0, 0, 10, self.yourTextField.frame.height))
yourTextField.leftView = paddingView
yourTextField.leftViewMode = UITextFieldViewMode.Always
}
}

资源

Answer 17

Swift 2.0版本:

let paddingView: UIView = UIView(frame: CGRectMake(0, 0, 5, 20))
textField.leftView = paddingView
textField.leftViewMode = UITextFieldViewMode.Always;

Answer 18

如果有人正在寻找Swift 4.0版本，那么下面extension是工作。它同时具有Left和Right填充UITextField。实际上它IBInspectable用于故事板配置。您可以直接从 Interface Builder / Storyboard 设置值。这是在 Swift 4.0 版本和 Xcode 9.0 中测试的代码

请记住，如果您想启用Clear Button相同的功能，UITextField则必须将 Right Padding 保留为空白。

import UIKit

extension UITextField {

    @IBInspectable var paddingLeft: CGFloat {
        get {
            return leftView!.frame.size.width
        }
        set {
            let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: newValue, height: frame.size.height))
            leftView = paddingView
            leftViewMode = .always
        }
    }

    @IBInspectable var paddingRight: CGFloat {
        get {
            return rightView!.frame.size.width
        }
        set {
            let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: newValue, height: frame.size.height))
            rightView = paddingView
            rightViewMode = .always     
        }
    }
}