android.util
Class DisplayMetrics

java.lang.Object
  android.util.DisplayMetrics

public class DisplayMetrics
extends Object

A structure describing general information about a display, such as its size, density, and font scaling.

Field Summary

float	density The logical density of the display.
int	heightPixels The absolute height of the display in pixels.
float	scaledDensity A scaling factor for fonts displayed on the display.
int	widthPixels The absolute width of the display in pixels.
float	xdpi The exact physical pixels per inch of the screen in the X dimension.
float	ydpi The exact physical pixels per inch of the screen in the Y dimension.

Constructor Summary

DisplayMetrics()

Method Summary

void	setTo(DisplayMetrics o)
void	setToDefaults()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

widthPixels

public int widthPixels

The absolute width of the display in pixels.

heightPixels

public int heightPixels

The absolute height of the display in pixels.

density

public float density

The logical density of the display. This is a scaling factor for the Density Independent Pixel unit, where one DIP is one pixel on an approximately 160 dpi screen (for example a 240x320, 1.5"x2" screen), providing the baseline of the system's display. Thus on a 160dpi screen this density value will be 1; on a 106 dpi screen it would be .75; etc.

This value does not exactly follow the real screen size (as given by xdpi and ydpi, but rather is used to scale the size of the overall UI in steps based on gross changes in the display dpi. For example, a 240x320 screen will have a density of 1 even if its width is 1.8", 1.3", etc. However, if the screen resolution is increased to 320x480 but the screen size remained 1.5"x2" then the density would be increased (probably to 1.5).

scaledDensity

public float scaledDensity

A scaling factor for fonts displayed on the display. This is the same as density, except that it may be adjusted in smaller increments at runtime based on a user preference for the font size.

xdpi

public float xdpi

The exact physical pixels per inch of the screen in the X dimension.

ydpi

public float ydpi

The exact physical pixels per inch of the screen in the Y dimension.

Constructor Detail

DisplayMetrics

public DisplayMetrics()

Method Detail

setTo

public void setTo(DisplayMetrics o)

setToDefaults

public void setToDefaults()