Scale factor for xxhdpi android?

Question

according to http://developer.android.com/training/multiscreen/screendensities.html

The following scale factors are indicated.

xhdpi: 2.0 hdpi: 1.5 mdpi: 1.0 (base level) ldpi: 0.75

I was wondering what would be the scale factor for xxhdpi?

Answer 1

In android.util.DisplayMetrics you can see that the scaling factor is 0.00625 :

/** * 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; 

Where DENSITY_DEFAULT - 160 → scaling factor = 1.0f / 160 = 0.00625.

 sizeScale = DENSITY_DEFAULT_SCALE * DENSITY_DPI 

From this:

• ldpi = 0.00625 * 120 → 0.75
• mdpi = 0.00625 * 160 → 1.0
• hdpi = 0.00625 * 240 → 1.5
• xhdpi = 0.00625 * 320 → 2.0
• xxhdpi = 0.00625 * 480 → 3.0
• xxxhdpi = 0.00625 * 640 → 4.0

Not exactly rocket science, but I hope that it will be useful for someone :)

Answer 2

If you look at the Indicators and grids , you will see that xxhdpi is 480 dpi, which is 3 times more than the baseline (mdpi @ 1.0). In other words, the scale factor for xxhdpi is 3.0