填充占位符文本ios

Question

我想让占位符文本显示在文本字段的中间（填充占位符文本）。占位符文本的大小也需要增加。我的代码如下，我该如何解决？

UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(30, 220,250,55)];

textField.placeholder=@"iiiiiii";

UIView *padView = [[UIView alloc] initWithFrame:CGRectMake(10, 110, 10, 0)];
textField.leftView = padView;
    textField.leftViewMode = UITextFieldViewModeAlways;


[self.view addSubview:textField];

更新

我希望占位符文本的字体大小增加your name，并且它应该有一个左边填充。

Answer 1

您可以继承UITextFiled并覆盖方法：

MyTextField.m

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

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

- (CGRect)placeholderRectForBounds:(CGRect)bounds {
    return [self rectForBounds:bounds];
}

//here 40 - is your x offset
- (CGRect)rectForBounds:(CGRect)bounds {
    return CGRectInset(bounds, 40, 3);
}

<强> UPD： 还设置了

textFiled.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;

因为io6与ios 7垂直定位可能存在一些问题

Answer 2

同样的问题被问及并回答如下Set padding for UITextField with UITextBorderStyleNone

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

Answer 3

您可以将起始文本对齐方式（xib中的{{1>}或通过代码的）设置为居中对齐。
然后在textField中，您可以将-textFieldShouldBeginEditing设置为左对齐 同样，在textField上，检查-textFieldDidEndEditing是否为空，如果是，则将textField设置为居中对齐。

基本上是：

textField

---

编辑：：

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField { [textField setTextAlignment:NSTextAlignmentLeft]; return YES; } -(void)textFieldDidEndEditing:(UITextField *)textField { if(textField.text.length == 0) { [textField setTextAlignment:NSTextAlignmentCenter]; } } 课程的 .h 应如下所示：

ViewController

现在，用这个替换你的其他代码：

@interface ViewController : UIViewController <UITextFieldDelegate> 
{
    UITextField *myTextField;
}

Answer 4

sampleTextfield.leftView = UIView(frame: CGRectMake(0, 0, 20, self.sampleTextfield.frame.height))
sampleTextfield.leftViewMode = UITextFieldViewMode.Always

Answer 5

我发现在swift 2和Xcode 7上执行此任务的最简单方法：

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var emailTextField: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()

        let paddingView = UIView(frame: CGRectMake(0, 0, 25, self.emailTextField.frame.height))
        emailTextField.leftView = paddingView
        emailTextField.leftViewMode = UITextFieldViewMode.Always
    }
}

Answer 6

func placeholderPadding(textField:UITextField, leftPadding:CGFloat) {
            textField.leftView = UIView(frame: CGRect(x: 0.0, y: 0.0, width: leftPadding, height: textField.frame.height))
            textField.leftViewMode = UITextFieldViewMode.always
        }

Answer 7

虽然我没有专门测试过，但这应该有效：

self.YourTextField.attributedPlaceholder = NSAttributedString(string: "    YourText")

将空格（填充）的数量添加到字符串

Answer 8

只需按几下空格键即可从左侧填充占位符文字。

  text

与

text