Why are ?Images Compressed when Displayed on Android Phones/Emulator?

Essentially I want an HD background on a layout, but instead of being a pristine image, it shows up extremely compressed.

Example:

Source Image:

Android Emulator version:

I thought maybe that it was just the emulator, but it looks that bad on the phone itself. I know these are high quality Samsung Galaxy S phones (th开发者_开发问答ese are the ones that came with Avatar preinstalled after all).

Does anyone know how to load images without compression? Source files are uncompressed pngs.

here's the code for what it's worth:

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:weightSum="1"     android:background="@drawable/background" android:id="@+id/blank">

</LinearLayout>

Figured it out: The problem is the image is automatically converted into RGB565 colorspace from AGB888. To prevent this, make sure the image has an alpha channel and is in a "raw" directory instead of the "drawable" directory.

The aapt may compress images when it builds the apk, but that compression is supposed to be lossless. The problem is probably somewhere else. Here are two possibilities.

If your image resource is being loaded from res/drawable on a device (or emulator) that is not mdpi, then it will be scaled as described here. One solution is to put the resource in the res/drawable-nodpi folder. Another is to provide several, density-specific images.

Another problem will arise if your background image does not match the size of the view. The view will automatically scale the image to fit the view size. You can prevent this by defining the background as an XML Bitmap with a gravity set to something that does not scale (such as center).