public class DisplayMetrics extends Object
To access the DisplayMetrics members, initialize an object like this:
DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics);
Modifier and Type | Field and Description |
---|---|
float |
density
The logical density of the display.
|
static int |
DENSITY_DEFAULT
The reference density used throughout the system.
|
static float |
DENSITY_DEFAULT_SCALE
Scaling factor to convert a density in DPI units to the density scale.
|
static int |
DENSITY_DEVICE
Deprecated.
There is no longer a static density; you can find the
density for a display in
densityDpi . |
static int |
DENSITY_HIGH
Standard quantized DPI for high-density screens.
|
static int |
DENSITY_LOW
Standard quantized DPI for low-density screens.
|
static int |
DENSITY_MEDIUM
Standard quantized DPI for medium-density screens.
|
static int |
DENSITY_TV
This is a secondary density, added for some common screen configurations.
|
static int |
DENSITY_XHIGH
Standard quantized DPI for extra-high-density screens.
|
static int |
DENSITY_XXHIGH
Standard quantized DPI for extra-extra-high-density screens.
|
int |
densityDpi
The screen density expressed as dots-per-inch.
|
int |
heightPixels
The absolute height of the display in pixels.
|
float |
noncompatDensity
The reported display density prior to any compatibility mode scaling
being applied.
|
int |
noncompatDensityDpi
The reported display density prior to any compatibility mode scaling
being applied.
|
int |
noncompatHeightPixels
The reported display height prior to any compatibility mode scaling
being applied.
|
float |
noncompatScaledDensity
The reported scaled density prior to any compatibility mode scaling
being applied.
|
int |
noncompatWidthPixels
The reported display width prior to any compatibility mode scaling
being applied.
|
float |
noncompatXdpi
The reported display xdpi prior to any compatibility mode scaling
being applied.
|
float |
noncompatYdpi
The reported display ydpi prior to any compatibility mode scaling
being applied.
|
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 and Description |
---|
DisplayMetrics() |
Modifier and Type | Method and Description |
---|---|
boolean |
equals(DisplayMetrics other)
Returns true if these display metrics equal the other display metrics.
|
boolean |
equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
|
int |
hashCode()
Returns an integer hash code for this object.
|
void |
setTo(DisplayMetrics o) |
void |
setToDefaults() |
String |
toString()
Returns a string containing a concise, human-readable description of this
object.
|
public static final int DENSITY_LOW
public static final int DENSITY_MEDIUM
public static final int DENSITY_TV
DENSITY_HIGH
) as
appropriate. In most cases (such as using bitmaps in
Drawable
) the platform
can perform this scaling at load time, so the only cost is some slight
startup runtime overhead.
This density was original introduced to correspond with a
720p TV screen: the density for 1080p televisions is
DENSITY_XHIGH
, and the value here provides the same UI
size for a TV running at 720p. It has also found use in 7" tablets,
when these devices have 1280x720 displays.
public static final int DENSITY_HIGH
public static final int DENSITY_XHIGH
public static final int DENSITY_XXHIGH
public static final int DENSITY_DEFAULT
public static final float DENSITY_DEFAULT_SCALE
@Deprecated public static int DENSITY_DEVICE
densityDpi
.public int widthPixels
public int heightPixels
public float density
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).
DENSITY_DEFAULT
public int densityDpi
DENSITY_LOW
, DENSITY_MEDIUM
, or DENSITY_HIGH
.public float scaledDensity
density
, except that it may be adjusted in smaller
increments at runtime based on a user preference for the font size.public float xdpi
public float ydpi
public int noncompatWidthPixels
public int noncompatHeightPixels
public float noncompatDensity
public int noncompatDensityDpi
public float noncompatScaledDensity
public float noncompatXdpi
public float noncompatYdpi
public void setTo(DisplayMetrics o)
public void setToDefaults()
public boolean equals(Object o)
Object
o
must represent the same object
as this instance using a class-specific comparison. The general contract
is that this comparison should be reflexive, symmetric, and transitive.
Also, no object reference other than null is equal to null.
The default implementation returns true
only if this ==
o
. See Writing a correct
equals
method
if you intend implementing your own equals
method.
The general contract for the equals
and Object.hashCode()
methods is that if equals
returns true
for
any two objects, then hashCode()
must return the same value for
these objects. This means that subclasses of Object
usually
override either both methods or neither of them.
equals
in class Object
o
- the object to compare this instance with.true
if the specified object is equal to this Object
; false
otherwise.Object.hashCode()
public boolean equals(DisplayMetrics other)
other
- The display metrics with which to compare.public int hashCode()
Object
Object.equals(java.lang.Object)
returns true
must return
the same hash code value. This means that subclasses of Object
usually override both methods or neither method.
Note that hash values must not change over time unless information used in equals comparisons also changes.
See Writing a correct
hashCode
method
if you intend implementing your own hashCode
method.
hashCode
in class Object
Object.equals(java.lang.Object)
public String toString()
Object
getClass().getName() + '@' + Integer.toHexString(hashCode())
See Writing a useful
toString
method
if you intend implementing your own toString
method.