Question

我有一个包含1个部分和2个行的tableview，我只有一个按钮动作。

在按钮操作中，我必须检查单击了哪个单元格，因为根据该单元格，我必须打开电子邮件视图以发送邮件。

我创建了两个bool值，但它无法正常工作，我的emailview仍然在没有单元格的情况下进行调用这段代码我在做什么

@implementation View
@synthesize Mytableview,selectedIndexPaths,value1,value2,cellselected;
BOOL values[1];



// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

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

    if ([indexPath row] == 0 && [indexPath section] == 0)
    {

        cell.textLabel.text= @"test";

        if (values[indexPath.row]) { 
            cell.accessoryType = UITableViewCellAccessoryCheckmark;

        } else {
            cell.accessoryType = UITableViewCellAccessoryNone;
        }
        value1=TRUE;
    }

    else if ([indexPath row] == 1 && [indexPath section] == 0)
    {
        cell.textLabel.text= @"test";
        value2=TRUE;
    }


        return cell;
}


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

    //[Mytableview deselectRowAtIndexPath:indexPath animated:YES];
    //self.cellselected = indexPath.row;

    UITableViewCell *cell = [Mytableview cellForRowAtIndexPath:indexPath];
    //here values is i give as array on top as BOOL values[1];i give size for it 
    values[indexPath.row] = !values[indexPath.row];

    if (values[indexPath.row]) { 
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
    } else {
        cell.accessoryType = UITableViewCellAccessoryNone;
    }
}


-(IBAction)ExportEmail
{


    if (value1==FALSE) {
        return;
    }
    else {

    Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));
    if (mailClass != nil)
{
// We must always check whether the current device is configured for sending emails
        if ([mailClass canSendMail])
        {
            [self displayComposerSheet];
        }

    }
    }

}

Answer 1

声明类可验证的NSIndexPath;

NSIndexPath *myIndexPath;

将didSelectRowAtIndexPath修改为

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

    UITableViewCell *cell = [Mytableview cellForRowAtIndexPath:indexPath];
    //here values is i give as array on top as BOOL values[1];i give size for it 

    myIndexPath = indexPath;

    if (values[indexPath.row]) { 
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
    } else {
        cell.accessoryType = UITableViewCellAccessoryNone;
    }
}

您可以在Button的IBAction中使用NSIndexPath，根据索引，您可以打开电子邮件。

-(IBAction)ExportEmail
{
    if(myIndexPath.row==0){
    // send mail    
    }else if(myIndexPath.row==1){
    // send mail 
    }
}

如何在按钮操作中传递单元格选择值

1 个答案: