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 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.
Constants |
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int |
FLAG_REQUIRED Set on |
int |
GL_ES_VERSION_UNDEFINED Default value for |
Inherited constants |
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![]() android.os.Parcelable
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Fields |
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public static final Creator<FeatureInfo> |
CREATOR
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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 |
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FeatureInfo() |
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FeatureInfo(FeatureInfo orig) |
Public methods |
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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 |
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![]() java.lang.Object
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![]() android.os.Parcelable
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int FLAG_REQUIRED
Set on flags
if this feature has been required by the application.
Constant Value: 1 (0x00000001)
int GL_ES_VERSION_UNDEFINED
Default value for reqGlEsVersion
;
Constant Value: 0 (0x00000000)
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
.
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.
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.
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(Parcel, int)
, the return value of this method must include the CONTENTS_FILE_DESCRIPTOR
bit.
Returns | |
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int |
a bitmask indicating the set of special object types marshaled by this Parcelable object instance. |
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 | |
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String |
String representation of the reqGlEsVersion attribute |
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 | |
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String |
a string representation of the object. |
void writeToParcel (Parcel dest, int parcelableFlags)
Flatten this object in to a Parcel.
Parameters | |
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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_WRITE_RETURN_VALUE . |