How to get rid of TableView white background, transparent color can change it?

How to get rid of TableView white background, transparent color can change it?
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Background is set to Clear Color.
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Useless eh, I tried. . . . Still have a layer of white
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No way ... I am here can ah, is not modified after the IB did not save ah
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I use the code in the form of rice useful for IB.. Also create UITABLEVIEW with code. . .
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The default is white, so the tableview's backgroundColor = [UIColor clearColor], still the same white. To set the transparency is not there alpha attributes? Set lower than 1, it is transparent. Not used, you can try!
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No Ha
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Redraw the cell will not, add a imageview on cell, paste in the above pictures