xCode : UITableViewCell에있는 모든 텍스트 필드 중 하나만이 원하는대로 작동합니다.

Question

그래서 테이블보기에 세 개의 셀에 레이블 이름이 있고 UITextField에 사용자의 데이터를 수집하는 셀이 있습니다. 그들은 다음과 같이 설정됩니다 :

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

static NSString *CellIdentifier = @"Cell"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
            reuseIdentifier:CellIdentifier]; 




if (cell == nil) { 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
} 
    nameTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)]; 
    emailTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)]; 
    messageTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)]; 

    nameTextField.delegate = self; 
    emailTextField.delegate = self; 
    messageTextField.delegate = self; 
cells *cells = nil; 
cells = [cellsarray objectAtIndex:indexPath.row]; 
cell.textLabel.text = cells.name; 
[cell.textLabel sizeToFit]; 
if (indexPath.row == 0) { 
    nameTextField.adjustsFontSizeToFitWidth = YES; 
        nameTextField.textColor = [UIColor blackColor]; 
        nameTextField.placeholder = @"Your name"; 
        nameTextField.keyboardType = UIKeyboardTypeDefault; 
        nameTextField.returnKeyType = UIReturnKeyGo; 
        nameTextField.backgroundColor = [UIColor whiteColor]; 
        nameTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support 
        nameTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support 
        nameTextField.textAlignment = UITextAlignmentLeft; 
        nameTextField.tag = 0; 
        //playerTextField.delegate = self; 

        nameTextField.clearButtonMode = UITextFieldViewModeNever; // no clear 'x' button to the right 
        [nameTextField setEnabled: YES]; 
        [nameTextField addTarget:self action:@selector(textFieldDidChange1:) forControlEvents:UIControlEventEditingChanged]; 

[cell.contentView addSubview:nameTextField]; 
} 
if (indexPath.row == 1) { 
    emailTextField.adjustsFontSizeToFitWidth = YES; 
        emailTextField.textColor = [UIColor blackColor]; 
        emailTextField.placeholder = @"Your email"; 
        emailTextField.keyboardType = UIKeyboardTypeEmailAddress; 
        emailTextField.returnKeyType = UIReturnKeyGo; 
        emailTextField.backgroundColor = [UIColor whiteColor]; 
        emailTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support 
        emailTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support 
        emailTextField.textAlignment = UITextAlignmentLeft; 
        emailTextField.tag = 1; 
        //playerTextField.delegate = self; 

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



        [emailTextField addTarget:self action:@selector(textFieldDidChange2:) forControlEvents:UIControlEventEditingChanged]; 
        [cell.contentView addSubview:emailTextField]; 
} 
if (indexPath.row == 2) { 
    messageTextField.adjustsFontSizeToFitWidth = YES; 
        messageTextField.textColor = [UIColor blackColor]; 
        messageTextField.placeholder = @"Your message"; 
        messageTextField.keyboardType = UIKeyboardTypeDefault; 
        messageTextField.returnKeyType = UIReturnKeyGo; 

        messageTextField.backgroundColor = [UIColor whiteColor]; 
        messageTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support 
        messageTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support 
        messageTextField.textAlignment = UITextAlignmentLeft; 
        messageTextField.tag = 2; 
        //playerTextField.delegate = self; 

        messageTextField.clearButtonMode = UITextFieldViewModeNever; // no clear 'x' button to the right 
        [messageTextField setEnabled: YES]; 
        [messageTextField addTarget:self action:@selector(textFieldDidChange3:) forControlEvents:UIControlEventEditingChanged]; 
        [cell.contentView addSubview:messageTextField]; 
} 

그러나 세 번째 셀 또는 messageTextField는 지시 사항을 따르는 유일한 것으로 보입니다. 다음 코드에서는 사용자가 messageTextField를 반환 할 때 NSLog "Hello"가 표시되도록 설정했습니다.

- (BOOL)textFieldShouldReturn:(UITextField *)textField { 

NSLog(@"returned"); 

if (messageTextField == textField) { 
NSLog(@"Hello"); 
    } 

} 

이 잘 작동하지만 나는 변경하는 경우

if (messageTextField == textField) 

에 나는에 돌아올 때 nameTextField, 그것은 여전히 ​​것 NSLog "안녕하세요"내 첫 번째 셀입니다

if (nameTextField == textField) 

내 세 번째 셀. 왜 이런 일이 일어나고 있는지에 대한 아이디어가 있습니까?

Answer 1

문제는 cellForRowAtIndexPath이 호출 될 때마다 3 개의 텍스트 필드를 모두 초기화하기 때문입니다. 세 번에 nameTextField 및 emailTextField이 다시 만들어 지지만 사용되지 않습니다.

그래서 messageTextField 만 작동합니다. 아래 코드를 사용해보십시오.

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

    static NSString *CellIdentifier = @"Cell"; 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
           reuseIdentifier:CellIdentifier]; 




    if (cell == nil) { 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
    } 

    cells *cells = nil; 
    cells = [cellsarray objectAtIndex:indexPath.row]; 
    cell.textLabel.text = cells.name; 
    [cell.textLabel sizeToFit]; 
    if (indexPath.row == 0) { 
    nameTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)]; 
    nameTextField.delegate = self; 
    nameTextField.adjustsFontSizeToFitWidth = YES; 
    nameTextField.textColor = [UIColor blackColor]; 
    nameTextField.placeholder = @"Your name"; 
    nameTextField.keyboardType = UIKeyboardTypeDefault; 
    nameTextField.returnKeyType = UIReturnKeyGo; 
    nameTextField.backgroundColor = [UIColor whiteColor]; 
    nameTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support 
    nameTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support 
    nameTextField.textAlignment = UITextAlignmentLeft; 
    nameTextField.tag = 0; 
    //playerTextField.delegate = self; 

    nameTextField.clearButtonMode = UITextFieldViewModeNever; // no clear 'x' button to the right 
    [nameTextField setEnabled: YES]; 
    [nameTextField addTarget:self action:@selector(textFieldDidChange1:) forControlEvents:UIControlEventEditingChanged]; 

    [cell.contentView addSubview:nameTextField]; 
    } 
    if (indexPath.row == 1) { 
    emailTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)]; 
    emailTextField.delegate = self; 
    emailTextField.adjustsFontSizeToFitWidth = YES; 
    emailTextField.textColor = [UIColor blackColor]; 
    emailTextField.placeholder = @"Your email"; 
    emailTextField.keyboardType = UIKeyboardTypeEmailAddress; 
    emailTextField.returnKeyType = UIReturnKeyGo; 
    emailTextField.backgroundColor = [UIColor whiteColor]; 
    emailTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support 
    emailTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support 
    emailTextField.textAlignment = UITextAlignmentLeft; 
    emailTextField.tag = 1; 
    //playerTextField.delegate = self; 

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



    [emailTextField addTarget:self action:@selector(textFieldDidChange2:) forControlEvents:UIControlEventEditingChanged]; 
    [cell.contentView addSubview:emailTextField]; 
    } 
    if (indexPath.row == 2) { 
    messageTextField = [[UITextField alloc] initWithFrame:CGRectMake(110, 10, 185, 30)]; 
    messageTextField.delegate = self; 
    messageTextField.adjustsFontSizeToFitWidth = YES; 
    messageTextField.textColor = [UIColor blackColor]; 
    messageTextField.placeholder = @"Your message"; 
    messageTextField.keyboardType = UIKeyboardTypeDefault; 
    messageTextField.returnKeyType = UIReturnKeyGo; 

    messageTextField.backgroundColor = [UIColor whiteColor]; 
    messageTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support 
    messageTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support 
    messageTextField.textAlignment = UITextAlignmentLeft; 
    messageTextField.tag = 2; 
    //playerTextField.delegate = self; 

    messageTextField.clearButtonMode = UITextFieldViewModeNever; // no clear 'x' button to the right 
    [messageTextField setEnabled: YES]; 
    [messageTextField addTarget:self action:@selector(textFieldDidChange3:) forControlEvents:UIControlEventEditingChanged]; 
    [cell.contentView addSubview:messageTextField]; 
    }