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18656286
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2013-09-06T11:04:19.910
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2013-09-06T11:17:35.707
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2013-09-06T11:17:35.707
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text
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In <a href="https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/util/DisplayMetrics.java" rel="noreferrer">android.util.DisplayMetrics</a>, you can see that scaling factor is 0.00625: <pre><code>/** * Scaling factor to convert a density in DPI units to the density scale. * @hide */ public static final float DENSITY_DEFAULT_SCALE = 1.0f / DENSITY_DEFAULT; </code></pre> Where as <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_DEFAULT" rel="noreferrer">DENSITY_DEFAULT</a> is 160 --> scaling factor = 1.0f / 160 = 0.00625. <pre><code>sizeScale = DENSITY_DEFAULT_SCALE * DENSITY_DPI </code></pre> From this: <ul> <li>ldpi = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_LOW" rel="noreferrer">120</a> -> 0.75</li> <li>mdpi = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_MEDIUM" rel="noreferrer">160</a> -> 1.0</li> <li>hdpi = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_HIGH" rel="noreferrer">240</a> -> 1.5</li> <li>xhdpi = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_XHIGH" rel="noreferrer">320</a> -> 2.0</li> <li>xxhdpi = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_XXHIGH" rel="noreferrer">480</a> -> 3.0</li> <li>xxxhdpi = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_XXXHIGH" rel="noreferrer">640</a> -> 4.0</li> </ul> Not exactly a rocket science, but hope this will be useful for someone :)
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