按下 UITableViewCell 时做一些事情答案

【问题标题】：Do some thing when press UITableViewCell按下 UITableViewCell 时做一些事情
【发布时间】：2016-10-15 23:43:27
【问题描述】：

我在UIViewController 中创建了表格视图，并成功创建了单元格，但是当按下任何单元格时我不知道该怎么做。我想如果按一个单元格，转到另一个视图控制器。我添加了一些方法，但没有奏效。我应该添加哪些方法以及如何将方法与操作联系起来？

此方法用于创建数组

-(void)addCell{

    int wholeNumber = 500;
    int leftOver = wholeNumber%90;
    int sectionNumber = wholeNumber / 90;;

    tableTitle = [[NSMutableArray alloc] init];
    tableSubtitle = [[NSMutableArray alloc] init];

    for (int i =1; i<= sectionNumber; i++) {
        if (i == 1) {
            NSString *stringForTitle = [NSString stringWithFormat:@"%d",i];
            NSString *stringForsubitle = [NSString stringWithFormat:@"90 Questions. Free."];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];


        }else if (i==2){
            NSString *stringForTitle = [NSString stringWithFormat:@"%d",i];

            NSString *stringForsubitle = [NSString stringWithFormat:@"90 Questions. Unlock or Rate App."];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (i==3){
            NSString *stringForTitle = [NSString stringWithFormat:@"%d",i];

            NSString *stringForsubitle = [NSString stringWithFormat:@"90 Questions. Unlock or Sign in and rate 15 questions."];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (i==4){
            NSString *stringForTitle = [NSString stringWithFormat:@"%d",i];

            NSString *stringForsubitle = [NSString stringWithFormat:@"90 Questions. Unlock or Sign in and write explanation for 4 questions."];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (i>4){
            NSString *stringForTitle = [NSString stringWithFormat:@"%d",i];

            NSString *stringForsubitle = [NSString stringWithFormat:@"90 Questions. Unlock or Sign in and contribute 2 questions."];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else{

        }




    }
    if (leftOver == 0) {


    } else {
        if (sectionNumber == 0) {
            NSString *stringForTitle = [NSString stringWithFormat:@"1"];

            NSString *stringForsubitle = [NSString stringWithFormat:@"%d Questions. Free.",leftOver];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (sectionNumber==1){
            NSString *stringForTitle = [NSString stringWithFormat:@"2"];

            NSString *stringForsubitle = [NSString stringWithFormat:@"%d Questions. Unlock or Rate app.",leftOver];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (sectionNumber==2){
            NSString *stringForTitle = [NSString stringWithFormat:@"3"];

            NSString *stringForsubitle = [NSString stringWithFormat:@"%d Questions. Unlock or Sign in and rate 15 questions.",leftOver];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (sectionNumber==3){
            NSString *stringForTitle = [NSString stringWithFormat:@"4"];

            NSString *stringForsubitle = [NSString stringWithFormat:@"%d Questions. Unlock or Sign in and write explanation for 3 questions.",leftOver];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else if (sectionNumber>3){
            NSString *stringForTitle = [NSString stringWithFormat:@"%d",sectionNumber +1];

            NSString *stringForsubitle = [NSString stringWithFormat:@"%d Questions. Unlock or Sign in and contribute 1 questions.",leftOver];
            [tableTitle addObject:stringForTitle];
            [tableSubtitle addObject:stringForsubitle];
        }else {

        }

    }

    NSString *stringForTitle = [NSString stringWithFormat:@"CQ"];
    NSString *stringForsubitle = [NSString stringWithFormat:@"Contribute Questions."];
    [tableTitle addObject:stringForTitle];
    [tableSubtitle addObject:stringForsubitle];




}

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [tableTitle count];
}

此方法创建单元格

-(UITableViewCell *)tableView:(UITableView *)_tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"thisCell"];



    UILabel *titleLable= [[UILabel alloc] initWithFrame:CGRectMake(0, 4, 60, 40)];
    titleLable.text = [tableTitle objectAtIndex:indexPath.row];

    [titleLable setFont:[UIFont systemFontOfSize:25]];
    titleLable.backgroundColor = [UIColor whiteColor];
    titleLable.textAlignment = NSTextAlignmentCenter;
    CALayer* layer = [titleLable layer];
    CALayer *bottomBorder = [CALayer layer];
    bottomBorder.borderColor = [UIColor lightGrayColor].CGColor;
    bottomBorder.borderWidth = 1;
    bottomBorder.frame = CGRectMake(-1, layer.frame.size.height-1, layer.frame.size.width, 1);
    [bottomBorder setBorderColor:[UIColor lightGrayColor].CGColor];
    [layer addSublayer:bottomBorder];

    [cell.contentView addSubview:titleLable];
    CGFloat width = [UIScreen mainScreen].bounds.size.width;
    CGFloat actualwidth = width - 100;


    UILabel *subtitleLable = [[UILabel alloc] initWithFrame:CGRectMake(60, 4, actualwidth, 40)];
    subtitleLable.text = [tableSubtitle objectAtIndex:indexPath.row];
    subtitleLable.numberOfLines = 0;

    [subtitleLable setFont:[UIFont systemFontOfSize:10]];
    subtitleLable.backgroundColor = [UIColor whiteColor];


    CALayer* layer2 = [subtitleLable layer];
    CALayer *bottomBorder2 = [CALayer layer];
    bottomBorder2.borderColor = [UIColor lightGrayColor].CGColor;
    bottomBorder2.borderWidth = 1;
    bottomBorder2.frame = CGRectMake(-1, layer2.frame.size.height-1, layer2.frame.size.width, 1);
    [bottomBorder2 setBorderColor:[UIColor lightGrayColor].CGColor];
    [layer2 addSublayer:bottomBorder2];



    [cell.contentView addSubview:subtitleLable];


    UILabel *spaceLable = [[UILabel alloc] initWithFrame:CGRectMake(actualwidth+60, 4, 100, 40)];

    spaceLable.text = @"";
    spaceLable.numberOfLines = 0;

    [spaceLable setFont:[UIFont systemFontOfSize:11]];
    spaceLable.backgroundColor = [UIColor whiteColor];


    CALayer* layer3 = [spaceLable layer];
    CALayer *bottomBorder3 = [CALayer layer];
    bottomBorder3.borderColor = [UIColor lightGrayColor].CGColor;
    bottomBorder3.borderWidth = 1;
    bottomBorder3.frame = CGRectMake(-1, layer3.frame.size.height-1, layer3.frame.size.width, 1);
    [bottomBorder3 setBorderColor:[UIColor lightGrayColor].CGColor];
    [layer3 addSublayer:bottomBorder3];


    [cell.contentView addSubview:spaceLable];












    return cell;
}


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    rowNo = indexPath.row;
}

这是表格视图的图像

这是表视图委托连接图像。

【问题讨论】：

标签： ios objective-c xcode uitableview

【解决方案1】：

我可以看到你已经写了 UITableViewDelegate 方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    rowNo = indexPath.row;
}

这个委托应该可以工作，但我认为您可能忘记为您的 UITableView 设置委托。

tableView.delegate = self

如果您使用 Interface builder 创建了 tableView，请检查 UITableView 委托连接

【讨论】：

非常感谢。我应该在哪里添加tableView.delegate = self？我已经将委托添加到 UITableView，这就是单元格显示的原因。这是图像的链接。 1drv.ms/i/s!AqDPUF7IFADqg7oGBWgX3k5XH8CAyA
无论您在哪里创建 tableView，都可以在 tableView.datasource=self 旁边添加这一行 'tableView.delegate=self'
我使用情节提要创建了这个 tableView。并使用故事板连接委托和数据源。我真的不知道哪里出了问题。
我的错，当你点击单元格时请检查，你是否在- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath方法中获得了控制权，如果你在那里获得了控制权，通过放置一个断点然后你可以继续您的新 viewController 或您想以任何方式移至 NewViewController
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ NSLog(@"a"); rowNo = indexPath.row; (rowN == 0) { NSLog(@"a"); }}。我放了这个，但无法通过单击单元格来控制方法。

【解决方案2】：

有一些选项可以做到这一点。

您已经拥有 tableview 本身的委托。像这样设置委托：
```
self.tableView.delegate = self;
```

现在当用户选择任何单元格时实现您的委托。

   - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {

   int ClickedRow = indexPath.row;
  // You can go further with this ID->ClickedRow 

 }

您可以将 UIButton 添加到 tablecell。

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

  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"thisCell"];


  UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

  //set the position of the button
 button.frame = CGRectMake(cell.frame.origin.x + 100, cell.frame.origin.y + 20, 100, 30);
 [button setTitle:@"myButton" forState:UIControlStateNormal];   
  [button addTarget:self action:@selector(customActionPressed:) forControlEvents:UIControlEventTouchUpInside];
  button.backgroundColor= [UIColor clearColor];
  [cell addSubview:button];

 return cell;
 }


  -(void)customActionPressed:(UIButton*)sender
  {

   NSLog(@"%i",[sender tag]); / with this tag, you can do anything..

  }

您可以添加手势：在 cellForRowAtIndexPath 中，执行此操作。您在表格单元上有一个图像视图或按钮。所以给它添加标签：

     UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]    initWithTarget:self action:@selector(handleImageTap:)];
    tap.cancelsTouchesInView = YES;
    tap.numberOfTapsRequired = 1;
    imageView.tag = indexPath.row;

    [imageView addGestureRecognizer:tap];


   // handle method
 - (void) handleImageTap:(UIGestureRecognizer *)gestureRecognizer 
  {
     //Do anything here ....


     NSLog (@"%d",[gestureRecognizer.view tag]);


      }

【讨论】：

谢谢，成功了。我使用了第三个，使用手势识别器。你如何识别点击了哪个单元格？
- (void) handleImageTap:(UIGestureRecognizer *)gestureRecognizer { NSLog(@"a"); if (rowNo == 0) { NSLog(@"0"); } if (rowNo == 1) { NSLog(@"1"); } } 我想添加这个，那么如何识别我点击的是哪个单元格？换句话说，如何在这里制作rowNo？
向单元格添加 uiimageview 并向其添加手势。更新了答案。检查它-stackoverflow.com/questions/7712161/…
很高兴知道。继续。