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PODiscovering the true screen size (in pixels) for Android devices which have a Software Navigation Bar
 

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  1. PODiscovering the true screen size (in pixels) for Android devices which have a Software Navigation Bar
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    <p>I need to be able to know the exact size of the screen excluding the Software Navigation Bar before hand. I'm using the andengine to create a game.<br> We wanted to fully support the new Nexus line (4, 7 and 10)</p> <p>According to <a href="http://developer.android.com/design/style/metrics-grids.html" rel="nofollow noreferrer">this page</a>, which many have pointed out, the size of the Software Navigation Bar should be 48dp.<br> Then using the information on <a href="https://android.stackexchange.com/questions/24922/why-can-the-nexus-7-display-so-much-more-content-on-screen-than-the-galaxy-nexus">this</a> excellent stackexchange post I gathered the formula for calculating the size of the Software Navigation Bar should be: <code>px = dp * (ppi / 160)</code></p> <p>According to <a href="http://www.google.com/nexus/7/specs/" rel="nofollow noreferrer">the official site</a> the Nexus 7 has a 216 ppi screen.<br> The Software Navigation Bar should then be: <code>48 * (216 / 160) = 64.8 ≈ 64px</code><br> We have a Nexus 7 tablet and the Software Navigation Bar is 75px.</p> <p>This means that either the ppi value is <code>(75 * 160) / 48 = 250</code><br> or<br> the dp size is in fact <code>(75 / 216) * 160 = 55.555... ≈ 55dp</code></p> <p>So which is it?</p> <p>Furthermore the 4.2 Android SDK comes with some premade AVDs. Included among them is the Nexus 7. There the size of the Software Navigation Bar is reported to be 64px...</p> <p>I'm not asking for the sizes of these devices, I can just google (or search stackexchange) for those numbers. Is it not possible to be sure of a device's screen size without purchasing that device?</p> <p><strong>[edit]</strong><br> I thought I should add that I'm getting the screen size with the following method: </p> <pre><code>WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE); Display display = windowManager.getDefaultDisplay(); DisplayMetrics screenSize = new DisplayMetrics(); display.getMetrics(screenSize); CAMERA_WIDTH = screenSize.widthPixels; CAMERA_HEIGHT = screenSize.heightPixels; </code></pre>
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    1. COyou meant the pixel size not the physical size, did u? Could you change the title a little bit to avoid the confusion :)?
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    2. COAh yes that I did
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    3. CONexus 7 has hdpi/tvdpi screen which is 1.5 times of mdpi and Nexus 4/Galaxy Nexus is xhdpi screen, so the number is 2 times. Thus the 48dp bar on N7 will be 48*1.5=72px, on N4/GN will be 48*2=96px
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