关于ios:在UITableViewCell中有一个UITextField

Having a UITextField in a UITableViewCell

我现在试图这样做几天,在阅读了大量试图这样做的人的消息之后,我仍然无法在我的某些UITableViewCells中完全正常工作UITextField,只是 像在这个例子中:

Screenshot

要么我的表单工作,但文本不可见(虽然我将其颜色设置为蓝色),当我点击它时键盘在场上,我无法正确实现键盘事件。
我尝试了一些来自Apple的示例(主要是UICatalog,其中有一个类似的控件),但它仍然无法正常工作。

有人可以帮助我(以及所有试图实现此控制的人)并在UITableViewCell中发布UITextField的简单实现,这可行吗?


试试吧。对我来说就像一个魅力(在iPhone设备上)。我将此代码用于登录屏幕一次。我将表视图配置为包含两个部分。你当然可以摆脱部分条件。

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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:kCellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                   reuseIdentifier:kCellIdentifier] autorelease];
    cell.accessoryType = UITableViewCellAccessoryNone;

    if ([indexPath section] == 0) {
        UITextField *playerTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)];
        playerTextField.adjustsFontSizeToFitWidth = YES;
        playerTextField.textColor = [UIColor blackColor];
        if ([indexPath row] == 0) {
            playerTextField.placeholder = @"[email protected]";
            playerTextField.keyboardType = UIKeyboardTypeEmailAddress;
            playerTextField.returnKeyType = UIReturnKeyNext;
        }
        else {
            playerTextField.placeholder = @"Required";
            playerTextField.keyboardType = UIKeyboardTypeDefault;
            playerTextField.returnKeyType = UIReturnKeyDone;
            playerTextField.secureTextEntry = YES;
        }      
        playerTextField.backgroundColor = [UIColor whiteColor];
        playerTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support
        playerTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support
        playerTextField.textAlignment = UITextAlignmentLeft;
        playerTextField.tag = 0;
        //playerTextField.delegate = self;

        playerTextField.clearButtonMode = UITextFieldViewModeNever; // no clear 'x' button to the right
        [playerTextField setEnabled: YES];

        [cell.contentView addSubview:playerTextField];

        [playerTextField release];
    }
}
if ([indexPath section] == 0) { // Email & Password Section
    if ([indexPath row] == 0) { // Email
        cell.textLabel.text = @"Email";
    }
    else {
        cell.textLabel.text = @"Password";
    }
}
else { // Login button section
    cell.textLabel.text = @"Log in";
}
return cell;    
}

结果如下所示:

login form


这是一个在iOS6 / 7/8/9下看起来不错的解决方案。

更新2016-06-10:这仍适用于iOS 9.3.3

感谢您的支持,现在可以通过https://github.com/fulldecent/FDTextFieldTableViewCell访问CocoaPods / Carthage / SPM

基本上我们采用股票UITableViewCellStyleValue1并钉一个UITextField,其中detailTextLabel应该是。这为我们提供了所有场景的自动放置:iOS6 / 7/8/9,iPhone / iPad,图像/无图像,附件/无附件,纵向/横向,1x / 2x / 3x。

enter image description here

注意:这是使用具有名为"word"的UITableViewCellStyleValue1类型单元格的storyboard。

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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    cell = [tableView dequeueReusableCellWithIdentifier:@"word"];
    cell.detailTextLabel.hidden = YES;
    [[cell viewWithTag:3] removeFromSuperview];
    textField = [[UITextField alloc] init];
    textField.tag = 3;
    textField.translatesAutoresizingMaskIntoConstraints = NO;
    [cell.contentView addSubview:textField];
    [cell addConstraint:[NSLayoutConstraint constraintWithItem:textField attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:cell.textLabel attribute:NSLayoutAttributeTrailing multiplier:1 constant:8]];
    [cell addConstraint:[NSLayoutConstraint constraintWithItem:textField attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:cell.contentView attribute:NSLayoutAttributeTop multiplier:1 constant:8]];
    [cell addConstraint:[NSLayoutConstraint constraintWithItem:textField attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:cell.contentView attribute:NSLayoutAttributeBottom multiplier:1 constant:-8]];
    [cell addConstraint:[NSLayoutConstraint constraintWithItem:textField attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:cell.detailTextLabel attribute:NSLayoutAttributeTrailing multiplier:1 constant:0]];
    textField.textAlignment = NSTextAlignmentRight;
    textField.delegate = self;
    return cell;
}


以下是我如何实现这一目标:

TextFormCell.h

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#import <UIKit/UIKit.h>

#define CellTextFieldWidth 90.0
#define MarginBetweenControls 20.0

@interface TextFormCell : UITableViewCell {
 UITextField *textField;
}

@property (nonatomic, retain) UITextField *textField;

@end

TextFormCell.m

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#import"TextFormCell.h"

@implementation TextFormCell

@synthesize textField;

- (id)initWithReuseIdentifier:(NSString *)reuseIdentifier {
    if (self = [super initWithReuseIdentifier:reuseIdentifier]) {
  // Adding the text field
  textField = [[UITextField alloc] initWithFrame:CGRectZero];
  textField.clearsOnBeginEditing = NO;
  textField.textAlignment = UITextAlignmentRight;
  textField.returnKeyType = UIReturnKeyDone;
  [self.contentView addSubview:textField];
    }
    return self;
}

- (void)dealloc {
 [textField release];
    [super dealloc];
}

#pragma mark -
#pragma mark Laying out subviews

- (void)layoutSubviews {
 CGRect rect = CGRectMake(self.contentView.bounds.size.width - 5.0,
        12.0,
        -CellTextFieldWidth,
        25.0);
 [textField setFrame:rect];
 CGRect rect2 = CGRectMake(MarginBetweenControls,
       12.0,
         self.contentView.bounds.size.width - CellTextFieldWidth - MarginBetweenControls,
         25.0);
 UILabel *theTextLabel = (UILabel *)[self textLabel];
 [theTextLabel setFrame:rect2];
}

它可能看起来有点冗长,但它确实有效!

别忘了设置代表!


试试这个吧。它也可以处理滚动,您可以重复使用单元格,而无需删除之前添加的子视图。

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- (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section{
    return 10;
}  

- (UITableViewCell *)tableView:(UITableView *)table cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [table dequeueReusableCellWithIdentifier:@"Cell"];
    if( cell == nil)
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"Cell"] autorelease];  

    cell.textLabel.text = [[NSArray arrayWithObjects:@"First",@"Second",@"Third",@"Forth",@"Fifth",@"Sixth",@"Seventh",@"Eighth",@"Nineth",@"Tenth",nil]
                           objectAtIndex:indexPath.row];

    if (indexPath.row % 2) {
        UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 0, 200, 21)];
        textField.placeholder = @"Enter Text";
        textField.text = [inputTexts objectAtIndex:indexPath.row/2];
        textField.tag = indexPath.row/2;
        textField.delegate = self;
        cell.accessoryView = textField;
        [textField release];
    } else
        cell.accessoryView = nil;

    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    return cell;        
}

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField {
    [inputTexts replaceObjectAtIndex:textField.tag withObject:textField.text];
    return YES;
}

- (void)viewDidLoad {
    inputTexts = [[NSMutableArray alloc] initWithObjects:@"",@"",@"",@"",@"",nil];
    [super viewDidLoad];
}


这应该不难。为表创建单元格时,将UITextField对象添加到单元格的内容视图中

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UITextField *txtField = [[UITextField alloc] initWithFrame....]
...
[cell.contentView addSubview:txtField]

将UITextField的委托设置为self(即viewcontroller)为文本字段指定标记,以便您可以识别在委托方法中编辑的文本字段。当用户点击文本字段时,键盘应弹出。我让它像这样工作。希望能帮助到你。


每次我的细胞出现时,我都会通过调用一个运行[cell.contentView bringSubviewToFront:textField]的方法来避免这种情况,但后来我发现了这种相对简单的技术:

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cell.accessoryView = textField;

似乎没有相同的背景覆盖问题,并且它自己(有点)对齐。此外,textLabel自动截断以避免溢出(或在其下),这很方便。


细节

  • Xcode 10.2(10E125),Swift 5

完整的示例代码

TextFieldInTableViewCell

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import UIKit

protocol TextFieldInTableViewCellDelegate: class {
    func textField(editingDidBeginIn cell:TextFieldInTableViewCell)
    func textField(editingChangedInTextField newText: String, in cell: TextFieldInTableViewCell)
}

class TextFieldInTableViewCell: UITableViewCell {

    private(set) weak var textField: UITextField?
    private(set) weak var descriptionLabel: UILabel?

    weak var delegate: TextFieldInTableViewCellDelegate?

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupSubviews()
    }

    private func setupSubviews() {
        let stackView = UIStackView()
        stackView.distribution = .fill
        stackView.alignment = .leading
        stackView.spacing = 8
        contentView.addSubview(stackView)
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.topAnchor.constraint(equalTo: topAnchor, constant: 6).isActive = true
        stackView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -6).isActive = true
        stackView.leftAnchor.constraint(equalTo: leftAnchor, constant: 16).isActive = true
        stackView.rightAnchor.constraint(equalTo: rightAnchor, constant: -16).isActive = true

        let label = UILabel()
        label.text ="Label"
        stackView.addArrangedSubview(label)
        descriptionLabel = label

        let textField = UITextField()
        textField.textAlignment = .left
        textField.placeholder ="enter text"
        textField.setContentHuggingPriority(.fittingSizeLevel, for: .horizontal)
        stackView.addArrangedSubview(textField)
        textField.addTarget(self, action: #selector(textFieldValueChanged(_:)), for: .editingChanged)
        textField.addTarget(self, action: #selector(editingDidBegin), for: .editingDidBegin)
        self.textField = textField

        stackView.layoutSubviews()
        selectionStyle = .none

        let gesture = UITapGestureRecognizer(target: self, action: #selector(didSelectCell))
        addGestureRecognizer(gesture)
    }

    required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) }
}

extension TextFieldInTableViewCell {
    @objc func didSelectCell() { textField?.becomeFirstResponder() }
    @objc func editingDidBegin() { delegate?.textField(editingDidBeginIn: self) }
    @objc func textFieldValueChanged(_ sender: UITextField) {
        if let text = sender.text { delegate?.textField(editingChangedInTextField: text, in: self) }
    }
}

ViewController

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import UIKit

class ViewController: UIViewController {

    private weak var tableView: UITableView?
    override func viewDidLoad() {
        super.viewDidLoad()
        setupTableView()
    }
}

extension ViewController {

    func setupTableView() {

        let tableView = UITableView(frame: .zero)
        tableView.register(TextFieldInTableViewCell.self, forCellReuseIdentifier:"TextFieldInTableViewCell")
        view.addSubview(tableView)
        tableView.translatesAutoresizingMaskIntoConstraints = false
        tableView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
        tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
        tableView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
        tableView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
        tableView.rowHeight = UITableView.automaticDimension
        tableView.estimatedRowHeight = UITableView.automaticDimension
        tableView.tableFooterView = UIView()
        self.tableView = tableView
        tableView.dataSource = self

        let gesture = UITapGestureRecognizer(target: tableView, action: #selector(UITextView.endEditing(_:)))
        tableView.addGestureRecognizer(gesture)
    }
}

extension ViewController: UITableViewDataSource {

    func numberOfSections(in tableView: UITableView) -> Int { return 1 }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return 2 }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier:"TextFieldInTableViewCell") as! TextFieldInTableViewCell
        cell.delegate = self
        return cell
    }
}

extension ViewController: TextFieldInTableViewCellDelegate {

    func textField(editingDidBeginIn cell: TextFieldInTableViewCell) {
        if let indexPath = tableView?.indexPath(for: cell) {
            print("textfield selected in cell at \(indexPath)")
        }
    }

    func textField(editingChangedInTextField newText: String, in cell: TextFieldInTableViewCell) {
        if let indexPath = tableView?.indexPath(for: cell) {
            print("updated text in textfield in cell as \(indexPath), value = "\(newText)"")
        }
    }
}

结果

enter image description here


我遇到了同样的问题。似乎设置cell.textlabel.text属性会将UILabel带到单元格的contentView的前面。
设置textLabel.text后添加textView,或者(如果不可能)调用:

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[cell.contentView bringSubviewToFront:textField]

我真的很难在iPad上完成这项任务,文本字段在UITableView中显示为不可见,整个行在获得焦点时变为蓝色。

最终对我有用的是Apple的"静态行内容技术"中描述的技术
表视图编程指南。我将标签和textField放在视图的NIB中的UITableViewCell中,然后通过cellForRowAtIndexPath:中的插座拉出该单元格。生成的代码比UICatalog更整洁。


以下是我认为正确的方式。当我测试它时,它适用于Ipad和Iphone。我们必须通过对uitableviewcell进行分类来创建我们自己的customCells:

从interfaceBuilder开始......
创建一个新的UIViewcontroller调用它customCell(志愿者为你的那里的xib)
确保customCell是uitableviewcell的子类

现在擦除所有视图并创建一个视图使其成为单个单元格的大小。使该视图子类为customcell。现在创建另外两个视图(复制第一个)。
转到您的连接检查器,找到2个IBOutlet,您现在可以连接到这些视图。

-backgroundView
-SelectedBackground

将这些连接到您刚刚复制的最后两个视图,不要担心它们。
第一个扩展customCell的视图,将你的标签和uitextfield放在其中。
进入customCell.h并连接你的标签和文本字段。将此视图的高度设置为75(每个单元格的高度)
全部完成。

在customCell.m文件中,确保构造函数看起来像这样:

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- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
    // Initialization code
    NSArray *nibArray = [[NSBundle mainBundle] loadNibNamed:@"CustomCell"       owner:self options:nil];
    self = [nibArray objectAtIndex:0];
}
return self;
}

现在创建一个UITableViewcontroller,在这个方法中使用customCell类,如下所示:

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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
// lets use our customCell which has a label and textfield already installed for us

customCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    //cell = [[[customCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];


    NSArray *topLevelsObjects = [[NSBundle mainBundle] loadNibNamed:@"NewUserCustomCell" owner:nil options:nil];
    for (id currentObject in topLevelsObjects){
        if ([currentObject  isKindOfClass:[UITableViewCell class]]){
            cell = (customCell *) currentObject;
            break;
        }
    }

    NSUInteger row = [indexPath row];

switch (row) {
    case 0:
    {

        cell.titleLabel.text = @"First Name"; //label we made (uitextfield also available now)

        break;
    }


        }
return cell;

}

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- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

return 75.0;
}

对于UITableViewCell内的多个UITextfield上的下一个/返回事件,我在故事板中使用了UITextField。

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@interface MyViewController () {
    NSInteger currentTxtRow;
}
@end
@property (strong, nonatomic) NSIndexPath   *currentIndex;//Current Selected Row

@implementation MyViewController


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CELL" forIndexPath:indexPath];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        UITextField *txtDetails = (UITextField *)[cell.contentView viewWithTag:100];
        txtDetails.delegate = self;

        txtDetails.placeholder = self.arrReciversDetails[indexPath.row];
        return cell;
}


#pragma mark - UITextFieldDelegate
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {

    CGPoint point = [textField convertPoint:CGPointZero toView:self.tableView];
    self.currentIndex = [self.tableView indexPathForRowAtPoint:point];//Get Current UITableView row
    currentTxtRow = self.currentIndex.row;
    return YES;
}


- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    currentTxtRow += 1;
    self.currentIndex = [NSIndexPath indexPathForRow:currentTxtRow inSection:0];

    UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:self.currentIndex];
    UITextField *currentTxtfield = (UITextField *)[cell.contentView viewWithTag:100];
    if (currentTxtRow < 3) {//Currently I have 3 Cells each cell have 1 UITextfield
        [currentTxtfield becomeFirstResponder];
    } else {
        [self.view endEditing:YES];
        [currentTxtfield resignFirstResponder];
    }

}

要从文本字段中获取文本 -

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- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
      switch (self.currentIndex.row) {

            case 0:
                NSLog(@"%@",[NSString stringWithFormat:@"%@%@",textField.text,string]);//Take current word and previous text from textfield
                break;

            case 1:
                 NSLog(@"%@",[NSString stringWithFormat:@"%@%@",textField.text,string]);//Take current word and previous text from textfield
                break;

            case 2:
                 NSLog(@"%@",[NSString stringWithFormat:@"%@%@",textField.text,string]);//Take current word and previous text from textfield
                break;

            default:
                break;
        }
}


这是UITableViewCell的一个drop-in子类,它用一个可编辑的UITextField替换detailTextLabel(或者,如果是UITableViewCellStyleDefault,则替换textLabel)。 这样做的好处是它允许您重复使用所有熟悉的UITableViewCellStyles,accessoryViews等,现在细节是可编辑的!

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@interface GSBEditableTableViewCell : UITableViewCell <UITextFieldDelegate>
@property UITextField *textField;
@end

@interface GSBEditableTableViewCell ()
@property UILabel *replace;
@end

@implementation GSBEditableTableViewCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        _replace = (style == UITableViewCellStyleDefault)? self.textLabel : self.detailTextLabel;
        _replace.hidden = YES;

        // Impersonate UILabel with an identical UITextField
        _textField = UITextField.new;
        [self.contentView addSubview:_textField];
        _textField.translatesAutoresizingMaskIntoConstraints = NO;
        [_textField.leftAnchor constraintEqualToAnchor:_replace.leftAnchor].active = YES;
        [_textField.rightAnchor constraintEqualToAnchor:_replace.rightAnchor].active = YES;
        [_textField.topAnchor constraintEqualToAnchor:_replace.topAnchor].active = YES;
        [_textField.bottomAnchor constraintEqualToAnchor:_replace.bottomAnchor].active = YES;
        _textField.font = _replace.font;
        _textField.textColor = _replace.textColor;
        _textField.textAlignment = _replace.textAlignment;

        // Dont want to intercept UITextFieldDelegate, so use UITextFieldTextDidChangeNotification instead
        [NSNotificationCenter.defaultCenter addObserver:self
                                           selector:@selector(textDidChange:)
                                               name:UITextFieldTextDidChangeNotification
                                             object:_textField];

        // Also need KVO because UITextFieldTextDidChangeNotification not fired when change programmatically
        [_textField addObserver:self forKeyPath:@"text" options:0 context:nil];
    }
    return self;
}

- (void)textDidChange:(NSNotification*)notification
{
    // Update (hidden) UILabel to ensure correct layout
    if (_textField.text.length) {
        _replace.text = _textField.text;
    } else if (_textField.placeholder.length) {
        _replace.text = _textField.placeholder;
    } else {
        _replace.text = @""; // otherwise UILabel removed from cell (!?)
    }
    [self setNeedsLayout];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    if ((object == _textField) && [keyPath isEqualToString:@"text"]) [self textDidChange:nil];
}

- (void)dealloc
{
    [_textField removeObserver:self forKeyPath:@"text"];
}

@end

使用简单 - 只需像以前一样创建您的单元格,但现在使用cell.textField而不是cell.detailTextLabel(如果是UITableViewCellStyleDefault,则使用cell.textLabel)。 例如

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GSBEditableTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"];
if (!cell) cell = [GSBEditableTableViewCell.alloc initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:@"Cell"];

cell.textLabel.text = @"Name";
cell.textField.text = _editablename;
cell.textField.delegate = self; // to pickup edits
...

FD的答案启发并改进了它