I cannot change the transparency of a TextureView by setAlpha method to maske it semi-transparent as it is promised by the android SDK. For example mTextureView.setAlpha(0.5f) does not have any effect.
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You need to make sure and setOpaque(false).
From the docs:
public void setOpaque (boolean opaque) Added in API level 14
Indicates whether the content of this TextureView is opaque. The content is assumed to be opaque by default.

HalR
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Changing the content opacity seems to not have any effect when TextureView is used in video playback. I want to have a semi-transparent video playback using TextureView. – feisal Sep 25 '13 at 19:31
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1Works perfectly with OpenGL stuff. – Ash Dec 01 '14 at 22:26
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The solution I used to make it happen was to wrap the TextureView in another widget like RelativeLayout and change the transparency of the parent.

feisal
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