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FeatureInfo
public
class
FeatureInfo
extends Object
implements
Parcelable
| java.lang.Object | |
| ↳ | android.content.pm.FeatureInfo |
Definition of a single optional hardware or software feature of an Android device.
This object is used to represent both features supported by a device and
features requested by an app. Apps can request that certain features be
available as a prerequisite to being installed through the
uses-feature tag in their manifests.
Starting in Build.VERSION_CODES.N, features can have a
version, which must always be backwards compatible. That is, a device
claiming to support version 3 of a specific feature must support apps
requesting version 1 of that feature.
Summary
Constants | |
|---|---|
int |
FLAG_REQUIRED
Set on |
int |
GL_ES_VERSION_UNDEFINED
Default value for |
Inherited constants |
|---|
Fields | |
|---|---|
public
static
final
Creator<FeatureInfo> |
CREATOR
|
public
int |
flags
Additional flags. |
public
String |
name
The name of this feature, for example "android.hardware.camera". |
public
int |
reqGlEsVersion
The GLES version used by an application. |
public
int |
version
If this object represents a feature supported by a device, this is the maximum version of this feature supported by the device. |
Public constructors | |
|---|---|
FeatureInfo()
|
|
FeatureInfo(FeatureInfo orig)
|
|
Public methods | |
|---|---|
int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
String
|
getGlEsVersion()
This method extracts the major and minor version of reqGLEsVersion attribute and returns it as a string. |
String
|
toString()
Returns a string representation of the object. |
void
|
writeToParcel(Parcel dest, int parcelableFlags)
Flatten this object in to a Parcel. |
Inherited methods | |
|---|---|
Constants
FLAG_REQUIRED
public static final int FLAG_REQUIRED
Set on flags if this feature has been required by the application.
Constant Value: 1 (0x00000001)
GL_ES_VERSION_UNDEFINED
public static final int GL_ES_VERSION_UNDEFINED
Default value for reqGlEsVersion;
Constant Value: 0 (0x00000000)
Fields
name
public String name
The name of this feature, for example "android.hardware.camera". If
this is null, then this is an OpenGL ES version feature as described
in reqGlEsVersion.
reqGlEsVersion
public int reqGlEsVersion
The GLES version used by an application. The upper order 16 bits represent the
major version and the lower order 16 bits the minor version. Only valid
if name is null.
version
public int version
If this object represents a feature supported by a device, this is the maximum version of this feature supported by the device. The device implicitly supports all older versions of this feature.
If this object represents a feature requested by an app, this is the minimum version of the feature required by the app.
When a feature version is undefined by a device, it's assumed to be version 0.
Public constructors
FeatureInfo
public FeatureInfo ()
Public methods
describeContents
public int describeContents ()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of writeToParcel(android.os.Parcel, int),
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR bit.
| Returns | |
|---|---|
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
getGlEsVersion
public String getGlEsVersion ()
This method extracts the major and minor version of reqGLEsVersion attribute and returns it as a string. Say reqGlEsVersion value of 0x00010002 is returned as 1.2
| Returns | |
|---|---|
String |
String representation of the reqGlEsVersion attribute |
toString
public String toString ()
Returns a string representation of the object. In general, the
toString method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@', and
the unsigned hexadecimal representation of the hash code of the
object. In other words, this method returns a string equal to the
value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
| Returns | |
|---|---|
String |
a string representation of the object. |
writeToParcel
public void writeToParcel (Parcel dest, int parcelableFlags)
Flatten this object in to a Parcel.
| Parameters | |
|---|---|
dest |
Parcel: The Parcel in which the object should be written. |
parcelableFlags |
int: Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE.
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |