Question

我的应用有多种选择问题和答案类型的屏幕。

为此我设计了带UITableView的屏幕，即连续我用四个单选按钮拍摄了四个答案。这里我的确切问题是，如果我在一行中选择一个单选按钮，它会自动选择另一行以及我之前选择的行。在row1中的示例我选择了option2单选按钮，然后在此处自动选择另一行option2。

我试过下面的代码请帮我解决这个问题。在此先感谢。

＆＃13;

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
   cell = [_tableViewRef dequeueReusableCellWithIdentifier:@"cell"];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    NSString *rowNumber = [NSString stringWithFormat:@"%ld",(long)indexPath.row+1];
     [[cell questionLbl] setText:[NSString stringWithFormat:@"%@. %@",rowNumber,@"Provide your own fixed background behind the UITableView?"]];
    
  
    [cell.option1RadioBtn addTarget:self
                 action:@selector(radioBtnn1Action:)
       forControlEvents:UIControlEventTouchUpInside];
    [cell.option2RadioBtn addTarget:self
                             action:@selector(radioBtnn2Action:)
                   forControlEvents:UIControlEventTouchUpInside];
    [cell.option3RadioBtn addTarget:self
                             action:@selector(radioBtnn3Action:)
                   forControlEvents:UIControlEventTouchUpInside];
    [cell.option4RadioBtn addTarget:self
                             action:@selector(radioBtnn4Action:)
                   forControlEvents:UIControlEventTouchUpInside];
        return cell;
}

＆＃13;

在单选按钮操作中，我尝试了以下代码：

＆＃13;

-(void)radioBtnn1Action:(UIButton*)sender
{
   
    CGPoint center= sender.center;
    CGPoint rootViewPoint = [sender.superview convertPoint:center toView:self.tableViewRef];
    NSIndexPath *indexPath = [self.tableViewRef indexPathForRowAtPoint:rootViewPoint];
    cell = [self.tableViewRef cellForRowAtIndexPath:indexPath];
    


    if ([cell.option1RadioBtn isSelected]) {
        [cell.option1RadioBtn setSelected:YES];
        
        [cell.option2RadioBtn setSelected:NO];
        [cell.option3RadioBtn setSelected:NO];
        [cell.option4RadioBtn setSelected:NO];

    }
    else
    {
        [cell.option1RadioBtn setSelected:YES];
        
        [cell.option2RadioBtn setSelected:NO];
        [cell.option3RadioBtn setSelected:NO];
        [cell.option4RadioBtn setSelected:NO];

    }

    
    
    
}
-(void)radioBtnn2Action:(UIButton*)sender
{
    
    CGPoint center= sender.center;
    CGPoint rootViewPoint = [sender.superview convertPoint:center toView:self.tableViewRef];
    NSIndexPath *indexPath = [self.tableViewRef indexPathForRowAtPoint:rootViewPoint];
    cell = [self.tableViewRef cellForRowAtIndexPath:indexPath];
    

    if ([cell.option2RadioBtn isSelected]) {
        [cell.option2RadioBtn setSelected:YES];
        
        [cell.option1RadioBtn setSelected:NO];
        [cell.option3RadioBtn setSelected:NO];
        [cell.option4RadioBtn setSelected:NO];
        
    }
    else
    {
        [cell.option2RadioBtn setSelected:YES];
        
        [cell.option1RadioBtn setSelected:NO];
        [cell.option3RadioBtn setSelected:NO];
        [cell.option4RadioBtn setSelected:NO];
        
    }
    
    
}
-(void)radioBtnn3Action:(UIButton*)sender
{
    
    CGPoint center= sender.center;
    CGPoint rootViewPoint = [sender.superview convertPoint:center toView:self.tableViewRef];
    NSIndexPath *indexPath = [self.tableViewRef indexPathForRowAtPoint:rootViewPoint];
    cell = [self.tableViewRef cellForRowAtIndexPath:indexPath];
    

    if ([cell.option3RadioBtn isSelected]) {
        [cell.option3RadioBtn setSelected:YES];
        
        [cell.option1RadioBtn setSelected:NO];
        [cell.option2RadioBtn setSelected:NO];
        [cell.option4RadioBtn setSelected:NO];
        
    }
    else
    {
        [cell.option3RadioBtn setSelected:YES];
        
        [cell.option1RadioBtn setSelected:NO];
        [cell.option2RadioBtn setSelected:NO];
        [cell.option4RadioBtn setSelected:NO];
        
    }
    
    
}
-(void)radioBtnn4Action:(UIButton*)sender
{
    
    CGPoint center= sender.center;
    CGPoint rootViewPoint = [sender.superview convertPoint:center toView:self.tableViewRef];
    NSIndexPath *indexPath = [self.tableViewRef indexPathForRowAtPoint:rootViewPoint];
    cell = [self.tableViewRef cellForRowAtIndexPath:indexPath];
    if ([cell.option4RadioBtn isSelected]) {
        [cell.option4RadioBtn setSelected:YES];
        
        [cell.option1RadioBtn setSelected:NO];
        [cell.option2RadioBtn setSelected:NO];
        [cell.option3RadioBtn setSelected:NO];
        
    }
    else
    {
        [cell.option4RadioBtn setSelected:YES];
        
        [cell.option1RadioBtn setSelected:NO];
        [cell.option2RadioBtn setSelected:NO];
        [cell.option3RadioBtn setSelected:NO];
        
    }
    
    
}

＆＃13;

Answer 1

您的代码中有许多区域可以改进，小的东西可能会导致这种行为。我发布了修改后的代码。请用我的代码替换你的代码块。代码中的问题是全局声明了单元格并引用了全局声明的表视图。在点击按钮检测单元格的情况下，我希望您做的最有效的改进。您不需要这么多代码就可以实现这一目标。让我们开始。

为了保持选择状态，我们将使用数组sectionData。

将此代码添加到did load函数。

for (int index = 0; index < 10; index ++) {//taken 10 because you are using only 10 rows
    [sectionData addObject:@"0"];
}

并替换以下功能的代码完全。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    NSString *rowNumber = [NSString stringWithFormat:@"%ld",(long)indexPath.row+1];
    [[cell questionLbl] setText:[NSString stringWithFormat:@"%@. %@",rowNumber,@"Provide your own fixed background behind the UITableView?"]];

    [cell.option1RadioBtn setSelected:([[sectionData objectAtIndex:indexPath.row] isEqualToString:@"1"])];
    [cell.option2RadioBtn setSelected:([[sectionData objectAtIndex:indexPath.row] isEqualToString:@"2"])];
    [cell.option3RadioBtn setSelected:([[sectionData objectAtIndex:indexPath.row] isEqualToString:@"3"])];
    [cell.option4RadioBtn setSelected:([[sectionData objectAtIndex:indexPath.row] isEqualToString:@"4"])];

    cell.option1RadioBtn.indexPath = indexPath;
    cell.option2RadioBtn.indexPath = indexPath;
    cell.option3RadioBtn.indexPath = indexPath;
    cell.option4RadioBtn.indexPath = indexPath;

    [cell.option1RadioBtn addTarget:self action:@selector(radioBtnnAction:) forControlEvents:UIControlEventTouchUpInside];
    [cell.option2RadioBtn addTarget:self action:@selector(radioBtnnAction:) forControlEvents:UIControlEventTouchUpInside];
    [cell.option3RadioBtn addTarget:self action:@selector(radioBtnnAction:) forControlEvents:UIControlEventTouchUpInside];
    [cell.option4RadioBtn addTarget:self action:@selector(radioBtnnAction:) forControlEvents:UIControlEventTouchUpInside];
        return cell;
}

您可以看到我只使用函数内部的变量引用。我已经将目标仅作为一个功能。现在你需要做的诀窍是创建UIButton的子类并将其命名为CustomButton。并且还在上面看到我已经将indexPath分配给按钮属性的行。 不要忘记在UITableViewCell的故事板和类文件中更改Outlet和Element的类。

自定义按钮的.h文件。

@interface CustomButton : UIButton

@property (nonatomic, strong) NSIndexPath *indexPath;

@end

现在您的目标函数将如下所示。

- (void)radioBtnnAction:(CustomButton*)sender
{
    UITableViewCell *cell = [self.tableViewRef cellForRowAtIndexPath:sender.indexPath];
   
    [sectionData replaceObjectAtIndex:sender.indexPath.row withObject:((sender == cell.option1RadioBtn)?@"1":(sender == cell.option2RadioBtn)?@"2":(sender == cell.option3RadioBtn)?@"3":@"4")];

    [cell.option1RadioBtn setSelected:(sender == cell.option1RadioBtn)];
    [cell.option2RadioBtn setSelected:(sender == cell.option2RadioBtn)];
    [cell.option3RadioBtn setSelected:(sender == cell.option3RadioBtn)];
    [cell.option4RadioBtn setSelected:(sender == cell.option4RadioBtn)];
}

我希望我已经包含了所有内容。试一次。

Answer 2

您似乎已经有了自定义单元格。

而不是在单元格上暴露标签questionLbl。让细胞采用问题模型。该模型可能类似于

类问题模型财产问题物业选择

您的单元格有一个property = questionModel AND处理按钮选择。因此，当您使用单元属性设置器分配问题模型时，也可以设置按钮状态。在单元格中有按钮目标/动作调用方法，用于更新问题模型选择属性。

您可以在tableView源中设置cell.question，而不是直接设置标签。

底线是，单元格应该处理模型而不是viewController。只是将模型传递给单元格。

一行中的单选按钮，在一行中选择一个单选按钮，影响另一行-cob

2 个答案: