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  1. PO
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    <p>First of all, make sure that your original image looks good so you're not just getting the problem from there.<br> Then, in your onCreate() method, do:</p> <p><strong>code1:</strong></p> <pre><code>getWindow().getDecorView().getBackground().setDither(true); getWindow().setFormat(PixelFormat.RGBA_8888); </code></pre> <p><strong>Deprecated:</strong></p> <p><strike>getWindow().addFlags(WindowManager.LayoutParams.FLAG_DITHER);</strike></p> <p>And to load your image explicitly as a 32-bit image (RGBA-8888 configuration) add the following where you load your views:</p> <p><strong>code2:</strong></p> <pre><code>BitmapFactory.Options options = new BitmapFactory.Options(); options.inPreferredConfig = Bitmap.Config.ARGB_8888; Bitmap gradient = BitmapFactory.decodeResource(getResources(), R.drawable.gradient, options); findViewById(R.id.main).setBackgroundDrawable(new BitmapDrawable(gradient)); </code></pre> <p><br>Comparison between different approaches: (these are all screenshots from the resulting application)</p> <p>My source images (64 colors to the left, 24 bit to the right):<br> image1 and image2:<br> <img src="https://i.stack.imgur.com/EuFVB.png" alt="64-color"><img src="https://i.stack.imgur.com/xJER2.png" alt="24 bit"><br> 1: Raw <strong>64-color</strong> image (image1) set as background from layout XML:<br> <img src="https://i.stack.imgur.com/ChFoO.png" alt="Raw image"><br> 2: The same image (image1), using <strong>code1</strong>:<br> <img src="https://i.stack.imgur.com/zlkpU.png" alt="Dithered image"><br> 3: The same image (image1) using both <strong>code1</strong> and <strong>code2</strong>:<br> <img src="https://i.stack.imgur.com/sssjO.png" alt="explicit 32bit"><br> 4: image2, loaded with <strong>code1</strong> and <strong>code2</strong> (in this case the dithering is not really important as both the source and destination use 8 bits per color):<br> <img src="https://i.stack.imgur.com/2wazA.png" alt="higher original quality"><br><br></p> <p><em>Notice how the resulting artifacts in image 3 already exists in the original image.</em></p> <p>Note: if anyone knows how to shrink the images down a bit, feel free to edit this post... </p>
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    1. POAwful background image quality in Android
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    1. USJared Burrows
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    1. POAwful background image quality in Android
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    1. COThanks for the fast response! Tried everything you purposed, but no luck at all. The image is fine, looks awesome when I see it in the Android gallery.
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    2. COAre you doing any operations on it in your program or are you just setting it as the background in your xml? This definitely looks like an image compression problem, which have always corrected themselves when increasing the bit depth and/or enabling dither.
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    3. COI'm just setting it the background. I have already updated my question with the layouts, so it could be more clear.
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