iphone - 为表格 View 中的单元格设置可变高度

Question

我正在加载一个表格 View 。我的 tableview 的每个单元格都应根据数据具有不同的高度。在下面的代码中，我在表格的每一行中显示联系人。每个联系人可能有多个电话号码。我在每个单元格中显示联系人及其电话号码。因此，根据每个联系人的电话号码数量，单元格的高度会发生变化。我编写了以下代码来显示表格中的联系人。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:    (NSIndexPath *)indexPath
{
NSArray *contactsInSection = [sectionsArray objectAtIndex:indexPath.section];
ContactsHelper *contact = [contactsInSection objectAtIndex:indexPath.row];
static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
    UIButton *checkBox = [[UIButton alloc] init];
    checkBox.tag = contact.contactID;
    [cell.contentView addSubview:checkBox];
    [checkBox setFrame:CGRectMake(6,14,20,20)];
    [checkBox release];

    UILabel *CellTextlabel = [[UILabel alloc] init];
    CellTextlabel.tag = 222;
    [CellTextlabel setFrame:CGRectMake(40, 5, 200, 20)];
    [cell.contentView addSubview:CellTextlabel];
    [CellTextlabel release];

    UILabel *detailcellTextlabel = [[UILabel alloc] init];
    detailcellTextlabel.tag = 333;
    [detailcellTextlabel setFrame:CGRectMake(40, 24, 200, 20)];
    detailcellTextlabel.font = [UIFont boldSystemFontOfSize:12];
    detailcellTextlabel.textColor = [UIColor grayColor];

    [[cell contentView] addSubview:detailcellTextlabel];
    [detailcellTextlabel release];
}
ABAddressBookRef addressbook = ABAddressBookCreate();
ABRecordRef person = ABAddressBookGetPersonWithRecordID(addressbook,contact.contactID);
UIButton *checkBox = (UIButton *)[cell.contentView viewWithTag:contact.contactID];

if(isActivDeactivButton)
{
    [checkBox setImage:[UIImage imageNamed:@"disabled_checkbox.png"] forState:UIControlStateNormal]; 
   }
else{
   [checkBox setImage:[UIImage imageNamed:@"selected_checkbox.png"] forState:UIControlStateNormal];
 }

[checkBox addTarget:self action:@selector(checkBoxSelected:) forControlEvents: UIControlEventTouchUpInside];

UILabel *editCellTextlabel = (UILabel *)[cell.contentView viewWithTag:222];
editCellTextlabel.font = [UIFont boldSystemFontOfSize:18];

UILabel *detailcellTextlabel = (UILabel *)[cell.contentView viewWithTag:333];


if (sendSMS) {
    NSMutableArray *phoneNumberEntries = [[[NSMutableArray alloc] init] autorelease];
        editCellTextlabel.text = contact.lastName;
    ABMultiValueRef phoneNumbers = ABRecordCopyValue(person, kABPersonPhoneProperty);
    numberOfLines = ABMultiValueGetCount(phoneNumbers);


    for (int i = 0; i < ABMultiValueGetCount(phoneNumbers)  ; i++) {
        CFStringRef phoneNoEntries = ABMultiValueCopyValueAtIndex(phoneNumbers, i);
        NSString *phoneNumber = (NSString *) phoneNoEntries;
        [phoneNumberEntries addObject:phoneNumber];  

     //   NSLog(@"email id %@", detailcellTextlabel.text);
        CFRelease(phoneNoEntries);
    }
     detailcellTextlabel.numberOfLines = ABMultiValueGetCount(phoneNumbers);
   [detailcellTextlabel setFrame:CGRectMake(40, 24, 200, 20 + 20 * [phoneNumberEntries count])];
   detailcellTextlabel.lineBreakMode = UILineBreakModeWordWrap;
    detailcellTextlabel.lineBreakMode = UILineBreakModeWordWrap;
    detailcellTextlabel.numberOfLines = numberOfLines;
    detailcellTextlabel.text = [phoneNumberEntries componentsJoinedByString:@"\n"];

   // NSLog(@"email id %@", detailcellTextlabel.text);
    CFRelease(phoneNumbers);

}
CFRelease(addressbook);
return cell;
}

我找不到正确设置单元格高度的方法。我已经实现了

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath 

委托(delegate)方法并尝试了各种逻辑。但是我无法正确设置行高。一个问题似乎是 indexpath.section 值，它往往会在两种委托(delegate)方法中发生变化。在这种情况下需要帮助。

Answer 1

您可以使用:- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

并根据单元格的节/行设置行高。

例如:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
 switch(indexPath.row){
   case:0
    return 100;
   break;

   case:1
    return 200;
   break;
  }
}

等....

如果你有超过 1 个部分试试这个

     - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{   

      switch(indexPath.section){
        case:0
            switch(indexPath.row){
                case:0
                    return 100;
                    break;

                case:1
                    return 200;
                    break;
            }
            break;

        case:1
            switch(indexPath.row){
                case:0
                    return 100;
                    break;

                case:1
                    return 200;
                    break;
            }

            break;
    }
}

沙尼