按下 UITableViewCell 时做一些事情
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【中文标题】按下 UITableViewCell 时做一些事情【英文标题】：Do some thing when press UITableViewCell 【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】：
【参考方案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。【参考方案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-***.com/questions/7712161/…
很高兴知道。继续。以上是关于按下 UITableViewCell 时做一些事情的主要内容，如果未能解决你的问题，请参考以下文章