How do I make this UITableView clear (transparent) in Swift 3

You can try this

In viewDidLoad:

tableView.backgroundColor = UIColor.clear

In cellForRowAt:

cell.contentView.backgroundColor = UIColor.clear

It's work for me.

Note: Below code been tested in Swift 3.

Method 1:

Select your tableViewCell from your storyboard and goto Attributes Inspector under View change Background to clear

Method 2: Try below code inside your cellForRowAt

  cell.layer.backgroundColor = UIColor.clear.cgColor

Note : If above method didn't works.try clear your project build by pressing shift + option + command + k

Update: Update your cellForRowAt from below code...

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath as IndexPath)
    cell.textLabel?.text = communities[indexPath.row]
    cell.textLabel?.font = UIFont(name: "Avenir", size: 12)
    cell.textLabel?.textColor = UIColor.red // set to any colour 
    cell.layer.backgroundColor = UIColor.clear.cgColor

    return cell
}

You have to set both table and cell background clear.

Inside tableView function:

tableView.backgroundColor = .clear
cell.backgroundColor = .clear
tableView.tableFooterView = UIView()

The two first answer doesn't work for me so I add a clear background everywhere and the white bg go away.

cell.layer.backgroundColor = UIColor.clear.cgColor
cell.backgroundColor = .clear
tableView.layer.backgroundColor = UIColor.clear.cgColor
tableView.backgroundColor = .clear

SWIFT 5.5.3