Why Isn't My UITextField Wrapper Being Displayed In UITableViewCell? - objective-c

Question

The issue is that my UITextField wrapper class isn't getting the UITextField to appear within a UITableViewCell (however, a regular UITextField view works just fine):
Here is my custom UITextField:
Header:
#import <UIKit/UIKit.h>
#protocol TUTextFieldDelegate <NSObject>
- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)string;
- (BOOL)textFieldShouldClear:(UITextField *)textField;
- (void)textFieldDidBeginEditing:(UITextField *)textField;
- (void)textFieldDidEndEditing:(UITextField *)textField;
#end
#interface TUTextField : UIControl <UITextFieldDelegate>
#property (nonatomic, assign) BOOL fixedDecimalPoint;
#property (nonatomic, assign) id <TUTextFieldDelegate>delegate;
#property (nonatomic, assign) UIKeyboardType keyboardType;
#property (nonatomic, strong) NSString *placeholder;
#property (nonatomic, assign) UITextBorderStyle borderStyle;
#property (nonatomic, assign) BOOL adjustsFontSizeToFitWidth;
#property (nonatomic, assign) UITextFieldViewMode clearButtonMode;
#property (nonatomic, strong) NSString *text;
- (id)initWithTextField:(UITextField *)textField;
- (id)initWithFrame:(CGRect)frame;
#end
Implementation:
#import "TUTextField.h"
#interface TUTextField ()
#property (nonatomic, strong) UITextField *textField;
#end
#implementation TUTextField
- (id)initWithTextField:(UITextField *)textField
{
self = [super initWithFrame:textField.frame];
if (self) {
self.textField = textField;
_textField.delegate = self;
_fixedDecimalPoint = NO;
}
return self;
}
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.textField = [[UITextField alloc] initWithFrame:frame];
_textField.delegate = self;
[self addSubview:_textField];
_fixedDecimalPoint = NO;
}
return self;
}
- (void)setKeyboardType:(UIKeyboardType)keyboardType {
_textField.keyboardType = keyboardType;
}
- (void)setPlaceholder:(NSString *)placeholder {
_textField.placeholder = placeholder;
}
- (void)setBorderStyle:(UITextBorderStyle)borderStyle {
_textField.borderStyle = borderStyle;
}
-(void)setAdjustsFontSizeToFitWidth:(BOOL)adjustsFontSizeToFitWidth {
_textField.adjustsFontSizeToFitWidth = adjustsFontSizeToFitWidth;
}
-(void)setClearButtonMode:(UITextFieldViewMode)clearButtonMode {
_textField.clearButtonMode = clearButtonMode;
}
-(void)setText:(NSString *)text {
_textField.text = text;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
[self addSubview:self.textField];
}
*/
- (void)viewDidLoad {
[self addSubview:_textField];
}
- (void)viewWillAppear {
[self addSubview:_textField];
}
- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)string
{
if ([_delegate respondsToSelector:#selector(textField:shouldChangeCharactersInRange:replacementString:)]) {
return [_delegate textField:textField shouldChangeCharactersInRange:range
replacementString:string];
}
return YES;
}
- (BOOL)textFieldShouldClear:(UITextField *)textField {
if ([_delegate respondsToSelector:#selector(textFieldShouldClear:)]) {
return [_delegate textFieldShouldClear:textField];
}
return YES;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField {
if ([_delegate respondsToSelector:#selector(textFieldDidBeginEditing:)]) {
[_delegate textFieldDidBeginEditing:textField];
}
}
- (void)textFieldDidEndEditing:(UITextField *)textField {
if ([_delegate respondsToSelector:#selector(textFieldDidEndEditing:)]) {
[_delegate textFieldDidEndEditing:textField];
}
}
#end
And here is the code to add my custom wrapper to the table view:
} else if (indexPath.row == 1) {
cell.textLabel.text = #"Tax Rate";
if (!_textField) {
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(220.0, 8.0, 60.0, 26.0)];
textField.clearButtonMode = UITextFieldViewModeWhileEditing;
textField.adjustsFontSizeToFitWidth = YES;
textField.borderStyle = UITextBorderStyleRoundedRect;
textField.keyboardType = UIKeyboardTypeDecimalPad;
textField.placeholder = kTaxRateDefault;
_textField = [[TUTextField alloc] initWithTextField:textField];
_textField.delegate = self;
// retrieve saved settings
_taxRate = [[SettingsSingleton sharedManager] taxRate];
if (![_taxRate isEqualToString:#""])
_textField.text = _taxRate;
}
UILabel *percentSign = [[UILabel alloc] initWithFrame:CGRectMake(285.0, 6.0, 20.0, 26.0)];
percentSign.text = #"%";
percentSign.backgroundColor = [UIColor clearColor];
[cell addSubview:_textField];
[cell addSubview:percentSign];
}
}
Any help appreciated!

Answer 1

I don't think this is the best way to extend a UITextField.
Instead of making an NSObject with a UITextField under it you should be saying something like:
Interface:
#interface UITextField (extendedUITextField) {
// Variables
}
//Methods
#end
Implementation:
#implementation UITextField (extendedUITextField)
// Method implement
#end
Hope this helps.