如何使视图变得透明以显示背景内容？

Question

I have set an image in background using this code:

 self.tableView.backgroundColor = UIColor(patternImage: UIImage(named: "image1")!)

However, I have some contentView on top, and I am trying to have those transparent to unveil the background.

How can this be done ? Thanks

Answer 1

Use alpha

self.contentView.alpha = 0.1

If alpha = 1.0 then the view is opaque, you can also set it to 0.

Answer 2

for that view do the following :

thatView.backgroundColor = UIColor.clearColor()