當單選按鈕選擇檢查

我使用UITableView單元格上的單選按鈕。首先單選按鈕未選中。當單選按鈕被檢查時。我正在滾動UITableView單選按鈕未選中。使用此代碼如下當單選按鈕選擇檢查

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
    return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 


    return 100; 

} 

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

    static NSString *CellIdentifier = @"Cell"; 
    static NSString *CellIdentifierFirst = @"CellFirst"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifierFirst]; 
    if (cell == nil) { 
     cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:CellIdentifier] autorelease]; 
     //cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:nil] autorelease]; 
    } 

    NSArray *cellSubs = cell.contentView.subviews; 
    for (int i = 0 ; i < [cellSubs count] ; i++) { 
     [[cellSubs objectAtIndex:i] removeFromSuperview]; 
    } 

    cell.selectionStyle = UITableViewCellSelectionStyleNone; 

    UIButton *redioBtn1 = [[UIButton alloc]initWithFrame:CGRectMake(20, 20, 20, 20)]; 
    [redioBtn1 setImage:[UIImage imageNamed:@"radiounselect.png"] forState:UIControlStateNormal]; 
    [redioBtn1 addTarget:self action:@selector(selectRadioButon:) forControlEvents:UIControlEventTouchUpInside]; 
    redioBtn1.tag = ++tagCount; 
    [cell.contentView addSubview:redioBtn1]; 

    UIButton *redioBtn2 = [[UIButton alloc]initWithFrame:CGRectMake(80, 20, 20, 20)]; 
    [redioBtn2 setImage:[UIImage imageNamed:@"radiounselect.png"] forState:UIControlStateNormal]; 
    [redioBtn2 addTarget:self action:@selector(selectRadioButon:) forControlEvents:UIControlEventTouchUpInside]; 
    redioBtn2.tag = ++tagCount; 
    [cell.contentView addSubview:redioBtn2]; 

    UIButton *redioBtn3 = [[UIButton alloc]initWithFrame:CGRectMake(140, 20, 20, 20)]; 
    [redioBtn3 setImage:[UIImage imageNamed:@"radiounselect.png"] forState:UIControlStateNormal]; 
    [redioBtn3 addTarget:self action:@selector(selectRadioButon:) forControlEvents:UIControlEventTouchUpInside]; 
    redioBtn3.tag = ++tagCount; 
    [cell.contentView addSubview:redioBtn3]; 

    return cell; 


} 


-(void)selectRadioButon:(id)sender { 


    btnTag = [sender tag]; 
    NSArray *arr = self.view.subviews; 
    UITableView *tblCell = [arr objectAtIndex:0]; 
    NSArray *cellAry = tblCell.subviews; 

    for (int i = 0; i <[cellAry count]; i++) { 
     UITableViewCell *content = [cellAry objectAtIndex:i]; 
     NSArray *contentArry = content.contentView.subviews; 
     for (int j = 0; j <[contentArry count]; j++) { 
      UIButton *button = [contentArry objectAtIndex:j]; 
      if (btnTag == button.tag) { 
       for (int i = 0; i <[contentArry count]; i++) { 
        UIButton *button = [contentArry objectAtIndex:i]; 
        if (btnTag == button.tag) { 
         if ([sender currentImage]==[UIImage imageNamed:@"radioselect.png"]) 

          [button setImage:[UIImage imageNamed:@"radiounselect.png"] forState:UIControlStateNormal]; 
         else 
          [button setImage:[UIImage imageNamed:@"radioselect.png"] forState:UIControlStateNormal]; 
        } 
        else 
         [button setImage:[UIImage imageNamed:@"radiounselect.png"] forState:UIControlStateNormal]; 

       } 

       return; 
      } 
     } 

    } 


}

來源

2011-07-01 Rehan

第一件事：你不應該添加的UIButton的每次細胞加載。您應該將它們添加到if (cell == nil) block之內。

接下來的事情：你應該保持在一個sepearate陣列（一個NSMutableArray的）磁道爲所選擇的單選按鈕的索引（一個INT值），並選擇相應的UIButton，所述if (cell == nil) block外部。

我希望this tutorial會幫助你。

來源

2011-07-01 10:49:18 EmptyStack

當單選按鈕選擇檢查

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