The following are some frequently used iOS TableView tips while developing.
1. Change the tableview background color
Sometimes you probably need to change the whole table view background
self.tableView.backgroundColor = colorTableview;
2. Reload the data in Table view
After update the table data array/dictionary, you probably want to manually reload the whole table.
[self.fileSelectionTableView reloadData];
3. Remove blank table rows
By default there will be extra empty table cells in your tableview. See below image：
To remove all the empty rows:
// remove all empty rows
self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
4. TableView overlapped with Navigation Bar
It is a quite common issue if you have placed a tableView on the UIViewController, or use code to draw the tableView.
self.navigationController.navigationBar.translucent = NO;
5. Handle Even and Odd TableCell
Sometimes you want to treat differently on even and odd table cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row %2 == 0){
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"dopboxCell" forIndexPath:indexPath];
// Configure the cell...
NSString *sectionTitle = [itemTitles objectAtIndex:indexPath.section];
NSArray *sectionItems = [items objectForKey:sectionTitle];
NSString *item = [sectionItems objectAtIndex:indexPath.row];
cell.textLabel.text = item;
//cell.imageView.image = [UIImage imageNamed:[self getImageFilename:animal]];
return cell;
}
else{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"icloudCell" forIndexPath:indexPath];
// Configure the cell...
NSString *sectionTitle = [itemTitles objectAtIndex:indexPath.section];
NSArray *sectionItems = [items objectForKey:sectionTitle];
NSString *item = [sectionItems objectAtIndex:indexPath.row];
cell.textLabel.text = item;
//cell.imageView.image = [UIImage imageNamed:[self getImageFilename:animal]];
return cell;
}
else{
return nil;
}
}
6. Pull down to refresh the table
//Step 1: in the viewDidLoad method,
// load data items at the start
[self wrapperDownLoadedItems];
self.refreshControl = [[UIRefreshControlalloc] init];
self.refreshControl.backgroundColor = [UIColor purpleColor];
self.refreshControl.tintColor = [UIColor whiteColor];
[self.refreshControl addTarget:self action:@selector(wrapperDownLoadedItems) forControlEvents:UIControlEventValueChanged];
//Step 2: implement the method wrapperDownLoadedItems
-(void) wrapperDownLoadedItems{
// _feedItems is table data source array
_feedItems = [[NSArray alloc] initObjects:XXXXXX];
// need to reload it
[self.listTableView reloadData];
// populate the table view
self.listTableView.delegate = self;
self.listTableView.dataSource = self;
}
7. Make your TableView Cell Non-Selectable/Non-highlightable
There are two ways of doing so:
Method 1: Use Storyboard:
Method 2: Use Code:
Swift
cell.selectionStyle = UITableViewCellSelectionStyle.none
Objective-C
cell.selectionStyle = UITableViewCellAccessoryNone;