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POAndroid Widget Bitmap Sizes
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  1. POAndroid Widget Bitmap Sizes
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    copied!<p>Hallo,</p> <p>I am writing a widget, but am unsure what size bitmap to use as a background for each screen resolution/density.</p> <p>According to the <a href="http://developer.android.com/guide/topics/appwidgets/index.html#MetaData" rel="noreferrer">Android Developer App Widgets</a> tutorial:</p> <pre><code>To find your minimum width and height in density-independent pixels (dp), use this formula: (number of cells * 74) - 2 Following this formula, you should use 72 dp for a height of one cell, 294 dp and for a width of four cells </code></pre> <p>So if my widget is 72dp x 294dp, what size bitmaps do I need for my ldpi, mdpi and hdpi drawables?</p> <p>Also, will I need any particular supports-screens settings in my manifest?</p> <p>TIA,</p> <p>-Frink</p> <p>Update: I've made some checkerboard patterns in various sizes and colours for each drawable- folder and tried them out. Is this density thing a bit of a red herring?</p> <p>I've just done a screen-grab of my emulator running as HVGA, medium density, 320x480. The size taken up by my widget is 320x100, so I create a 320x100 bitmap in the mdpi folder as a background for my widget it looks perfect both on my emulator and LG GT540.</p> <p>And for an emulator running as WVGA854, high density, 480x854. The size of my widget is 480x150. Creating a background this size and placing it in the hdpi folder displays correctly on this emulator. I have no hardware to test this on tho :-(</p> <p>Update2: I think I can explain my problem better now :-)</p> <p>If I have three devices:</p> <pre><code>Device1, resolution 320x480, density ldpi Device2, resolution 320x480, density mdpi Device3, resolution 400x854, density mdpi </code></pre> <p>The physical size of the screens would probably all be different, but I don't think the actual sizes matter</p> <p>I've worked out that Device1 and Device2 will need a background of 320x100, whereas Device3 will need 400x150 So what size background goes into the mdpi folder to display properly on Device2 and Device3?</p>
 

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