cocoa-touch - 如何调用电话、发送短信或在 map 上查找地址？

Question

来 self 的应用程序的编码 detailView，它有一个分组 TableView 。如果单击电子邮件，我希望应用程序调用选定的电话号码或发送文本或发送电子邮件，如果选择了地址，则转到谷歌地图。 这是我的 didSelectRowAtIndexPath.. 它不工作。我不知道如何获取所选单元格的信息。请帮忙。

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

    Directory *text = (Directory *)[tableView cellForRowAtIndexPath:indexPath];

    //check content of text.
    NSLog(@"Phone Number Selected is %@", text);

    //NSString *dialHome = [dispHomephone stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:17148581499"]]
}

如果有帮助，这是我的 cellForRowAtIndexPath。

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

    int cellPhoneLen = [dispCellphone length];
    int workPhoneLen = [dispWorkphone length];
    int homePhoneLen = [dispHomephone length];
    int emailLen = [dispEMail length];

    NSString *address = [NSString stringWithFormat:@"%@\n"@"%@ %@ %@\n"@"%@", dispAddress, dispCity, dispState, dispZip, dispCountry];
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:CellIdentifier] autorelease];
    }

    cell.selectionStyle = UITableViewCellSelectionStyleBlue;

    // Configure the cell...
    switch (indexPath.section) 
    {
        case 1:
        {
            if (homePhoneLen != 0)
            {
                switch (indexPath.row)
                {
                    case 0:
                    {
                        if (homePhoneLen != 0)
                        {
                            cell.textLabel.text = NSLocalizedString(@"home :", @"homephone label");
                            cell.detailTextLabel.text = dispHomephone;
                        } break;
                    case 1:
                        if (workPhoneLen != 0)
                        {
                            cell.textLabel.text = NSLocalizedString(@"work :", @"workphone label");
                            cell.detailTextLabel.text = dispWorkphone;
                        } break;
                    case 2:
                        if (cellPhoneLen != 0)
                        {
                            cell.textLabel.text = NSLocalizedString(@"mobile :", @"cellphone label");
                            cell.detailTextLabel.text = dispCellphone;
                        }
                    }
                }
            }

            else if (workPhoneLen != 0)
            {
                switch (indexPath.row)
                {
                    case 0:
                    {
                        if (workPhoneLen != 0)
                        {
                            cell.textLabel.text = NSLocalizedString(@"work :", @"workphone label");
                            cell.detailTextLabel.text = dispWorkphone;
                        } break;
                    case 1:
                        if (cellPhoneLen != 0)
                        {
                            cell.textLabel.text = NSLocalizedString(@"mobile :", @"cellphone label");
                            cell.detailTextLabel.text = dispCellphone;
                        }
                    }
                }
            }

            else if (cellPhoneLen != 0)
                {
                    cell.textLabel.text = NSLocalizedString(@"mobile :", @"cellphone label");
                    cell.detailTextLabel.text = dispCellphone;
                }
        } break;
        case 2:
        {
            if (emailLen != 0)
            {
                cell.detailTextLabel.text = dispEMail;
            }

        } break;
        case 3:
        {           
            cell.detailTextLabel.lineBreakMode = UILineBreakModeWordWrap;
            cell.detailTextLabel.numberOfLines = 3;
            cell.detailTextLabel.text = address;
        } break;

    }
    return cell;
}

Answer 1

• 首先，什么是Directory？查看您的第一个代码片段，看起来 Directory 是 UITableViewCell 的子类，但是您的第二个代码片段表明您没有使用 UITableViewCell 子类。

  改变这一行:

  Directory *text = (Directory *)[tableView cellForRowAtIndexPath:indexPath];

  对此:

  UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

  然后您可以像这样获取 UITableViewCell 的值:

  NSString *myString = cell.detailTextLabel.text

我会留给您来确定存储在单元格中的信息类型，因为您更了解您的应用程序的工作方式。

• 要调用电话，请执行以下操作:

  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"tel://%@",myString]]]

• 要发送文本，请执行以下操作:

  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"sms://%@",myString]]]

• 要打开 map ，请执行以下操作:

  myString = [addressText stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]; NSString* urlString = [NSString stringWithFormat:@"http://maps.google.com/maps?q=%@", myString]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlText]];

• 要发送电子邮件，请执行以下操作:

  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"mailto://%@",myString]]]