Appleの標準セルを操作しようとする代わりに、思い切ってUITableViewCellStyleValue1を模倣する独自のUITableViewCellサブクラスを作成しました。テーブルビューが編集モードに入ると、簡単に言えば、値ラベルを非表示にしてテキストフィールドを表示します。同じことに苦労しているかもしれない人のために、私はあなたが始めるのを助けるためにいくつかのコードを投稿しています：
@interface NXAlphaNumericTextFieldCell : UITableViewCell<UITextFieldDelegate,NumberKeyboardDelegate>
@property (strong, nonatomic) UITextField *inputTextField;
@property (strong, nonatomic) UILabel *titleLabel;
@property (strong, nonatomic) UILabel *valueLabel;
@property (strong, nonatomic) NSArray *xTitleLabelConstraints;
@property (strong, nonatomic) NSArray *xTextFieldConstraints;
@property (strong, nonatomic) NSArray *xValueLabelConstraints;
@end
そして、実装におけるいくつかのメソッド：
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
self.titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 0, 44.0f)];
self.titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
self.titleLabel.font = [UIFont boldSystemFontOfSize:16.0f];
self.titleLabel.backgroundColor = [UIColor clearColor];
self.valueLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 0, 44.0f)];
self.valueLabel.translatesAutoresizingMaskIntoConstraints = NO;
self.valueLabel.textColor = [UIColor colorWithRed:81.0/255.0 green:102.0/255.0 blue:145.0/255.0 alpha:1.0];
self.valueLabel.backgroundColor = [UIColor clearColor];
self.inputTextField = [[UITextField alloc] initWithFrame:CGRectMake(0, 0, 100, 44.0f)];
self.inputTextField.translatesAutoresizingMaskIntoConstraints = NO;
self.inputTextField.autocapitalizationType = UITextAutocapitalizationTypeWords;
self.inputTextField.autocorrectionType = UITextAutocorrectionTypeYes;
self.inputTextField.clearButtonMode = UITextFieldViewModeAlways;
self.inputTextField.delegate = self;
[self.contentView addSubview:self.valueLabel];
[self.contentView addSubview:self.titleLabel];
[self.contentView addSubview:self.inputTextField];
UILabel *textLabel = self.titleLabel;
NSDictionary *labelTextFieldViewsDictionary = NSDictionaryOfVariableBindings(textLabel);
self.xTitleLabelConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"|-[textLabel]"
options:0
metrics:nil
views:labelTextFieldViewsDictionary];
UITextField *textfield = self.inputTextField;
labelTextFieldViewsDictionary = NSDictionaryOfVariableBindings(textLabel, textfield);
self.xTextFieldConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"|-[textLabel]-50-[textfield]-|"
options:0
metrics:nil
views:labelTextFieldViewsDictionary];
UILabel *valueLabel = self.valueLabel;
labelTextFieldViewsDictionary = NSDictionaryOfVariableBindings(valueLabel);
self.xValueLabelConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:[valueLabel]-|"
options:0
metrics:nil
views:labelTextFieldViewsDictionary];
[self setNeedsUpdateConstraints];
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
if (self.isEditing) {
[self.inputTextField becomeFirstResponder];
}
}
- (void)setEditing:(BOOL)editing animated:(BOOL)animated
{
[super setEditing:editing animated:animated];
[self addConstraints:self.xTitleLabelConstraints];
if (editing) {
if (self.inputType == kCellInputTypeAlphaNumeric) {
self.inputTextField.keyboardType = UIKeyboardTypeAlphabet;
} else if (self.inputType == kCellInputTypeEmail) {
self.inputTextField.keyboardType = UIKeyboardTypeEmailAddress;
} else if (self.inputType == kCellInputTypePhoneNumber) {
self.inputTextField.keyboardType = UIKeyboardTypeNamePhonePad;
} else {
if (!self.numberKeyboard) {
self.numberKeyboard = [[NumberKeyboard alloc] initWithNibName:@"NumberKeyboard" bundle:nil];
self.numberKeyboard.textField = self.inputTextField;
self.numberKeyboard.showsPeriod = YES;
self.numberKeyboard.delegate = self;
}
self.inputTextField.inputView = self.numberKeyboard.view;
}
self.inputTextField.text = self.valueLabel.text;
self.inputTextField.placeholder = self.titleLabel.text;
self.valueLabel.hidden = YES;
self.inputTextField.hidden = NO;
[self removeConstraints:self.xValueLabelConstraints];
[self addConstraints:self.xTextFieldConstraints];
} else {
[self.inputTextField resignFirstResponder];
self.inputTextField.hidden = YES;
self.valueLabel.hidden = NO;
[self removeConstraints:self.xTextFieldConstraints];
[self addConstraints:self.xValueLabelConstraints];
}
}
- (void)updateConstraints
{
[super updateConstraints];
if (self.editing) {
[self removeConstraints:self.xValueLabelConstraints];
[self addConstraints:self.xTextFieldConstraints];
} else {
[self removeConstraints:self.xTextFieldConstraints];
[self addConstraints:self.xValueLabelConstraints];
}
}