Ios 单元格按钮的操作
我正在使用tableview，其中我在一个单元格上添加了两个按钮。下面是我使用的代码Ios 单元格按钮的操作,ios,uitableview,Ios,Uitableview,我正在使用tableview，其中我在一个单元格上添加了两个按钮。下面是我使用的代码 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableC
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.backgroundView =[[UIImageView alloc] initWithImage:[ [UIImage imageNamed:@"list-bg.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ];
tickbtn = [UIButton buttonWithType:UIButtonTypeCustom];
tickbtn.tag = 200+indexPath.row;
[tickbtn setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
[tickbtn addTarget:self action:@selector(addshed:) forControlEvents:UIControlEventTouchUpInside];
tickbtn.frame = CGRectMake(220, 10, 30, 30);
[cell.contentView addSubview:tickbtn];
NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);
crossbtn = [UIButton buttonWithType:UIButtonTypeCustom];
crossbtn.tag = 400+indexPath.row;
[crossbtn setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
[crossbtn addTarget:self action:@selector(removeshed:) forControlEvents:UIControlEventTouchUpInside];
crossbtn.frame = CGRectMake(250, 10, 30, 30);
[cell.contentView addSubview:crossbtn];
NSLog(@"tickbtn tag %ld",(long)crossbtn.tag);
return cell;
}
-(IBAction)addshed:(UIControl *)sender
{
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:sender.tag-200 inSection:0];
UITableViewCell *cell = (UITableViewCell*)[list_table cellForRowAtIndexPath:indexPath];
UIButton *check1 = (UIButton*)[cell.contentView viewWithTag:indexPath.row+200];
UIButton *check2 = (UIButton*)[cell.contentView viewWithTag:indexPath.row+400];
UIImageView *btnimg1 = [[UIImageView alloc] initWithImage:check1.currentBackgroundImage];
//UIImageView *btnimg2 = [[UIImageView alloc] initWithImage:check2.currentBackgroundImage];
NSLog(@"SHED LIST subviews: %@", btnimg1.image);
// Shed_data *sheddata = [[Shed_data alloc] init];
if (btnimg1.image == [UIImage imageNamed:@"ok_gray.png"]) {
//btnimg.image = [UIImage imageNamed:@"ok_gray.png"];
[check1 setBackgroundImage:[UIImage imageNamed:@"ok_green.png"]forState:UIControlStateNormal];
[check2 setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
[self addsheddata:sender];
NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);
}
else if (btnimg1.image == [UIImage imageNamed:@"ok_green.png"])
{
[check2 setBackgroundImage:[UIImage imageNamed:@"delete-red.png"]forState:UIControlStateNormal];
[check1 setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
[self removesheddata:sender];
}
}
-(IBAction)removeshed:(UIControl*)sender
{
//.…………………….. My functionality
}
请找出我的错误并帮助我解决它。你们的帮助将非常可观。我已经看到了这个问题。这可能会导致这种类型的错误
Why do you add subviews again and again to your cell's content view.?
cellForRowAtIndexpath:dequeueReusableCellWithIdentifier:[cell.contentView addSubview:tickbtn]，您必须根据add进行一些更改一次，也可以对CROSBTN进行更改
更新：我看到了您更新的问题。我的建议是，最好使用自定义单元格。使用此链接可以访问。代码中有很多混乱。例如，在这一行中，UITableViewCell*单元格=（UITableViewCell*）[list_table cellforrowatinexpath:indexath]，它将给出意外的结果。不要像这样调用委托方法。试试这个方法，因为它对我来说很好用。我刚刚用我的Xcode 5
进行了测试
修改：
1.我创建了一个名为_objects（_objects=[[NSMutableArray alloc]initWithObjects:@“一”、“二”、“三、零”）的NSMutableArray
）。并将其交给我的UITableView
2.给tickBtn和CrossTn一个不同的颜色，以便容易看到
3.将按钮按下功能更改为UIControl
到UIButton
像-（iAction）addshed:（UIButton*）sender
，当按下按钮时，我捕获标签值并在控制台上打印出来
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
cell.textLabel.text = [_objects objectAtIndex:indexPath.row];
cell.backgroundView =[[UIImageView alloc] initWithImage:[ [UIImage imageNamed:@"list-bg.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ];
tickbtn = [UIButton buttonWithType:UIButtonTypeCustom];
tickbtn.tag = 200+indexPath.row;
[tickbtn setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
[tickbtn setBackgroundColor:[UIColor blackColor]];
[tickbtn addTarget:self action:@selector(addshed:) forControlEvents:UIControlEventTouchUpInside];
tickbtn.frame = CGRectMake(220, 10, 30, 30);
[cell.contentView addSubview:tickbtn];
NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);
crossbtn = [UIButton buttonWithType:UIButtonTypeCustom];
crossbtn.tag = 400+indexPath.row;
[crossbtn setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
[crossbtn addTarget:self action:@selector(removeshed:) forControlEvents:UIControlEventTouchUpInside];
crossbtn.frame = CGRectMake(250, 10, 30, 30);
[crossbtn setBackgroundColor:[UIColor greenColor]];
[cell.contentView addSubview:crossbtn];
NSLog(@"tickbtn tag %ld",(long)crossbtn.tag);
return cell;
}
-(IBAction)addshed:(UIButton *)sender {
NSLog(@"add shed %d",sender.tag);
}
-(IBAction)removeshed:(UIButton *)sender {
NSLog(@"remove %d",sender.tag);
}
新问题更新
Did you try with 10 or more cells and try with some continuous scroll?
结果是
正如另一个答案所说
[cell addSubview:crossbtn];// -------- Change here ---------
据我所知，让我澄清一下
contentView是UITableViewCell
的子视图。在这里，您可以看到在UITableViewCell
中实际上有3个子视图。您需要将按钮添加到单元格子视图，而不是单元格的contentview子视图。所以使用这个代码
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.backgroundView =[[UIImageView alloc] initWithImage:[ [UIImage imageNamed:@"list-bg.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ];
tickbtn = [UIButton buttonWithType:UIButtonTypeCustom];
tickbtn.tag = 200+indexPath.row;
[tickbtn setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
[tickbtn addTarget:self action:@selector(addshed:) forControlEvents:UIControlEventTouchUpInside];
tickbtn.frame = CGRectMake(220, 10, 30, 30);
[cell addSubview:tickbtn];// -------- Change here ---------
NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);
crossbtn = [UIButton buttonWithType:UIButtonTypeCustom];
crossbtn.tag = 400+indexPath.row;
[crossbtn setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
[crossbtn addTarget:self action:@selector(removeshed:) forControlEvents:UIControlEventTouchUpInside];
crossbtn.frame = CGRectMake(250, 10, 30, 30);
[cell addSubview:crossbtn];// -------- Change here ---------
NSLog(@"tickbtn tag %ld",(long)crossbtn.tag);
return cell;
}
对于cellForRowAtIndexpath:
而言，您的代码似乎很好。单击按钮时获取标记值时可能会出错。尝试使用此代码进行更改：-
-(IBAction)addshed:(UIControl *)sender
{
//.…………………….. My functionality
int selectedRow1 = ((UIControl *)sender).tag;
NSLog(@"No. %d", selectedRow1);
}
您能否显示-（iAction）添加：（UIControl*）发件人的代码？？您是如何获得标签值的？请描述更多在您的按钮操作触发并完成后将发生的情况？当我按下特定单元格的按钮时，它将更改单元格的颜色…@user3131561:使用customCell可以轻松完成此操作。查看我的更新答案。什么是列表\u表
？从何处获取UITableViewCell
对象以及在何处使用它？是否确定在这一行[cell.contentView addSubview:tickbtn]，按钮将只向单元格添加一次？如果滚动或重复使用单元格？@Mani，根据要求，它可以正常工作。请查看更新的答案，年轻人，并感谢您的评论/讨论。幸运的是，你尝试了10个或更多的单元格，尝试了一些连续滚动，并且只给了cell.contentview.subviews.count日志？让我们@bunty……………。我在addshed函数中做了更新，请看一看，并告诉我是否有错误的地方…。