UITableView fondo claro

    // Fix for iOS 7 to clear backgroundColor
    cell.backgroundColor = [UIColor clearColor];
    cell.backgroundView = [[UIView new] autorelease];
    cell.selectedBackgroundView = [[UIView new] autorelease];

en cellForRowAtIndexPath

Also, make sure that your tableview actually has transparent background (in storyboard):

Pon esto:

cell.backgroundColor = [UIColor clearColor];

En esta sección:

cellForRowAtIndexPath

Try setting backgroundView to nil first.

[self.tableView setBackgroundView:nil];
[self.tableView setBackgroundColor:[UIColor clearColor]];

Not sure if this is a change in documentation with iOS7 or has always been there and just did not affect background color, but per UITableView Class Reference @property backgroundView

"You must set this property to nil to set the background color of the table view."

edit: corrected code syntax

This has been answered, but incorrectly in a lot of ways.

You need to implement the below delegate method:

    - (void)tableView:(UITableView *)tableView  willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    [cell setBackgroundColor:[UIColor clearColor]];
}

You can't put the fix in cellForRowAtIndexPath because that is after the cell is rendered, and it will flash a white background before the background gets set to clear (on slower devices).

Use this delegate method and your problems are solved!

Actually the officially correct place to change cell background color is different according to documentation (Referencia de la clase UITableViewCell):

Whether you use a predefined or custom cell, you can change the cell’s background using the backgroundView property or by changing the inherited backgroundColor property. In iOS 7, cells have a white background by default; in earlier versions of iOS, cells inherit the background color of the enclosing table view. If you want to change the background color of a cell, do so in the tableView:willDisplayCell:forRowAtIndexPath: method of your table view delegate.

swift 3, 4 and 5

cell.backgroundColor = UIColor.clear

This is quite a frustrating problem. Here's my current solution:

Agregue esto a su UITableViewCell subclase.

- (void)didMoveToSuperview {
    [super didMoveToSuperview];

    self.backgroundColor = [UIColor clearColor];
}

This did only work for me when i edited a clear background color for each cell and a clear color for the table itself.. BOTH PROGRAMMATICALLY

to set the clear color for the table:

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    initMenu()
    myTableView.backgroundColor = UIColor.clearColor()
}

to set the color for the cells:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("tablecellid", forIndexPath: indexPath)
    cell.backgroundColor = UIColor.clearColor()
    return cell
}

This worked for me in iOS7+:

self.tableView.backgroundColor =[UIColor blueColor];
self.tableView.opaque = NO;
self.tableView.backgroundView = nil;`

y luego en cellForRowAtIndexPath:

cell.backgroundColor = [UIColor clearColor];

prueba este fragmento de código

cell.contentView.backgroundColor = [UIColor clearColor];
cell.backgroundColor = [UIColor colorWithWhite:1.0 alpha:0.5];

Primer set

tableView.backgroundColor = [UIColor clearColor];

Segundo juego

tableCell.backgroundColor = [UIColor clearColor];

One thing to nice. The default color of UITable seems to be white (I don't know why)

But better change that.

create IB Outlet for table view @IBOutlet weak var yourTable : UITableView!

in view load

override func viewDidLoad() {
    yourTable.delegate = self
    yourTable.dataSource = self

    yourTable.backgroundColor = UIColor.clearColor()
}

if you want to clear color of Cell also do this in

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    cell.backgroundColor = UIColor.clearColor() 

}

In my app, I had to set the backgroundColor en mi UITableViewCell clase de [UIColor clearColor] color when I updated for iOS 7.

Trata

[myTable setSeparatorStyle:UITableViewCellSeparatorStyleNone];
[myTable setSeparatorInset:UIEdgeInsetsZero];

Y

cell.backgroundColor = [UIColor clearColor];

In my case the cell was created using a xib. it seems like interface builder on xcode5 has trouble setting clearColor to the cell.backgroundColor.

All I needed to do was indeed to set

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// get the cell from the nib
//then force the backgroundColor
cell.backgroundColor = [UIColor clearColor]
return cell;
}

Just select Clear Color on View Background for the table and for the cell also.

Swift 3

override func viewDidLoad() {
        super.viewDidLoad()
        tableView.backgroundColor = UIColor.clear
}

// Fix iOS 7 clear backgroundColor compatibility 
// I Think this two lines only are enough

cell.backgroundColor = [UIColor clearColor];
cell.selectedBackgroundView = [[UIView new] autorelease];

En Swift 3

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell", for: indexPath)
    cell.backgroundColor = .clear
    cell.backgroundView = UIView()
    cell.selectedBackgroundView = UIView()
    return cell
}

Kit

tableView.backgroundColor = [UIColor clearColor];

en viewDidLoad.

if this is not working, try:

tableView.backgroundView = nil;