UITableViewCell의 동적 텍스트 필드에서 스크롤 할 때 데이터가 손실됩니다.

Question

이 질문에 이미 많은 답변이 있지만 내 문제의 해결책이 없습니다.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
UITableViewCell *cell; 
NSString *CellIdentifier = @"Cell";//[NSString st ringWithFormat:@"S%1dR%1d",indexPath.section,indexPath.row]; 
//UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

UITextField *textField_Name, *textField_PhoneNumber; 
UIButton *button_AddToMyCon; 

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

    [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
    [cell setBackgroundColor:[UIColor clearColor]]; 

    if (indexPath.row < rowcount-2) { 

    textField_Name = [[UITextField alloc]init]; 
    textField_PhoneNumber = [[UITextField alloc]init]; 

    textField_Name.frame = CGRectMake(10, (cell.frame.size.height-20)/2, 143, 30); 
    textField_PhoneNumber.frame = CGRectMake(167, (cell.frame.size.height-20)/2, 143, 30); 

    textField_Name.delegate = self; 
    textField_PhoneNumber.delegate = self; 

    textField_Name.borderStyle = UITextBorderStyleRoundedRect; 

    textField_PhoneNumber.borderStyle = UITextBorderStyleRoundedRect; 

    textField_Name.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"Link Name" attributes:@{NSForegroundColorAttributeName: [UIColor lightGrayColor]}]; 
    textField_PhoneNumber.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"Web Link/URL" attributes:@{NSForegroundColorAttributeName: [UIColor lightGrayColor]}]; 

    textField_Name.layer.cornerRadius = 5.0; 
    textField_Name.clipsToBounds = YES; 
    [textField_Name.layer setBorderColor:[UIColor lightGrayColor].CGColor]; 
    [textField_Name.layer setBorderWidth:0.5]; 
    textField_Name.font = [UIFont fontWithName:@"arial" size:15.0]; 


    textField_PhoneNumber.layer.cornerRadius = 5.0; 
    textField_PhoneNumber.clipsToBounds = YES; 
    [textField_PhoneNumber.layer setBorderColor:[UIColor lightGrayColor].CGColor]; 
    [textField_PhoneNumber.layer setBorderWidth:0.5]; 
    textField_PhoneNumber.font = [UIFont fontWithName:@"arial" size:15.0]; 
    textField_Name.textColor = [UIColor colorWithRed:(152.0f/255.0f) green:(152.0f/255.0f) blue:(152.0f/255.0f) alpha:1.0f]; 
    textField_PhoneNumber.textColor = [UIColor colorWithRed:(152.0f/255.0f) green:(152.0f/255.0f) blue:(152.0f/255.0f) alpha:1.0f]; 
    // textField_Name.tag=501+indexPath.row; 
     textField_Name.tag = ktagName; 
    NSLog(@"textField_Name.tag %ld",(long)textField_Name.tag); 
    //textField_PhoneNumber.tag=701+indexPath.row; 
     textField_PhoneNumber.tag =ktagPhn; 
    NSLog(@"textField_PhoneNumber.tag %ld",(long)textField_PhoneNumber.tag); 
    if(intEditSave == 1) 
    { 
     [textField_Name setUserInteractionEnabled:NO]; 
     [textField_PhoneNumber setUserInteractionEnabled:NO]; 
    } 
    else 
    { 
     [textField_Name setUserInteractionEnabled:YES]; 
     [textField_PhoneNumber setUserInteractionEnabled:YES]; 
    } 
     textField_PhoneNumber.keyboardType = UIKeyboardTypeURL; 

    [cell addSubview:textField_Name]; 
    [cell addSubview:textField_PhoneNumber]; 
    UILabel *linelable=[[UILabel alloc]initWithFrame:CGRectMake(0, cell.contentView.frame.size.height+10, cell.contentView.frame.size.width, 0.5)]; 
    [cell.contentView addSubview:linelable]; 
    [linelable setBackgroundColor:[UIColor colorWithRed:(152.0f/255.0f) green:(152.0f/255.0f) blue:(152.0f/255.0f) alpha:0.2f]]; 

    } 
else if (indexPath.row==rowcount-2){ 
     NSLog(@"indexPath.row==rowcount-1"); 
     UIButton* button_AddMore = [[UIButton alloc]init]; 
     [button_AddMore setTitle:ktagAdd_More forState:UIControlStateNormal]; 
     [button_AddMore titleLabel].font = [UIFont fontWithName:@"arial" size:15.0]; 
     [button_AddMore setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; 
     [button_AddMore addTarget:self action:@selector(addMoreButton:) forControlEvents:UIControlEventTouchUpInside]; 
     // button_AddMore.tag = ktagbutton_AddMore; 
     button_AddMore.frame = CGRectMake(90, (cell.frame.size.height-20)/2, 140, 30); 
     [button_AddMore setBackgroundImage:[UIImage imageNamed:@"addMore_button.png"] forState:UIControlStateNormal]; 
     [cell.contentView addSubview:button_AddMore]; 

     button_AddMore.tag=indexPath.row; 
    } 
    else if (indexPath.row==rowcount-1) 
    { 
     button_AddToMyCon = [[UIButton alloc]init]; 
     [button_AddToMyCon setTitle:ktagAdd_to_MyCon forState:UIControlStateNormal]; 
     [button_AddToMyCon titleLabel].font = [UIFont fontWithName:@"arial" size:15.0]; 
     [button_AddToMyCon setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; 
     [button_AddToMyCon addTarget:self action:@selector(save_Fields:) forControlEvents:UIControlEventTouchUpInside]; 
     button_AddToMyCon.tag = ktagbutton_AddToMyCon; 
     button_AddToMyCon.frame = CGRectMake(90, (cell.frame.size.height-20)/2, 140, 30); 

     [button_AddToMyCon setBackgroundColor:[UIColor colorWithRed:(234.0f/255.0f) green:(134.0f/255.0f) blue:(59.0f/255.0f) alpha:1.0]]; 
     button_AddToMyCon.layer.cornerRadius=4; 
     [cell.contentView addSubview:button_AddToMyCon]; 

     UILabel *linelable=[[UILabel alloc]initWithFrame:CGRectMake(0, cell.contentView.frame.size.height+10, cell.contentView.frame.size.width, 0.5)]; 
     [linelable setBackgroundColor:[UIColor colorWithRed:(152.0f/255.0f) green:(152.0f/255.0f) blue:(152.0f/255.0f) alpha:0.2f]]; 

    } 
} 
return cell; 
} 

-(void)addMoreButton:(UIButton *)sender 
{ 
rowcount=rowcount+1; 

int section = 0; 
long row = rowcount; 

NSIndexPath* path = [NSIndexPath indexPathForRow:row-3 inSection:section]; 

[(UITableView *)[self.view viewWithTag:ktagtableView_detailsEdit] insertRowsAtIndexPaths:[NSArray arrayWithObjects:path, nil] withRowAnimation:UITableViewRowAnimationLeft]; 

NSIndexPath* top = [NSIndexPath indexPathForRow:rowcount-1 inSection:0]; 
[(UITableView*)[self.view viewWithTag:ktagtableView_detailsEdit] scrollToRowAtIndexPath:top atScrollPosition:UITableViewScrollPositionBottom animated:YES]; // 
//[(UITableView *)[self.view viewWithTag:ktagtableView_detailsEdit]reloadData]; 

} 

여기서 시나리오는 tableview에 각각 2 개의 텍스트 필드가 포함 된 4 개의 행 기본값이있는 시나리오입니다. 추가 버튼과 저장 버튼 하나가 추가되었습니다. 더 많은 버튼을 클릭하면 매번 한 행이 추가됩니다. 위의 사항을 알려 주시기 바랍니다.

Answer 1

cell 인스턴스에 초기 값이 없습니다. 먼저 첫 번째 줄에 nil으로 설정하십시오.

더 적절한 방법 :

{ 
    NSString *CellIdentifier = @"Cell"; 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (!cell) 
    { 
     cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
     // add subviews to cellview 
    } 
    // set data to subviews 
}