<uses-feature>

<uses-feature android:glEsVersion="integer"
              android:name="string"
              android:required=["true" | "false"] />

For example, an application might specify that it requires a camera with auto-focus capabilities. If a device does not provide a camera with auto-focus, then it will not allow installation of the application.

In order to maintain strict device compatibility, it's very important that you use this element to declare all applicable features (listed below) that your application uses. Failure to declare a feature may result in your application being installed on a device that does not support the feature and your application failing.

For some features, there may exist a specfic attribute that allows you to define a version of the feature, such as the version of Open GL used (declared with glEsVersion). Other features that either do or do not exist for a device, such as a camera, are declared using the name attribute.

Any software or hardware features that may vary among Android-powered devices will be listed on this page among the attributes below. If you see any features here that you use in your application, you should include a <uses-feature> element for each one. For example, if your application uses the device camera, then you should include the following in your AndroidManifest.xml:

<uses-feature android:name="android.hardware.camera" />

If you declare android.hardware.camera this way, then your application is considered compatible with all devices that include a camera. If your application also uses auto-focus features, then you also need to include a <uses-feature> element that declares the android.hardware.camera.autofocus feature. Also note that you must still request the CAMERA permission. Requesting the permission grants your application access to the appropriate hardware and software, while declaring the features used by your application ensures proper device compatibility.

Although the <uses-feature> element is only activated for devices running API Level 4 or higher, it is safe to include this for applications that declare a minSdkVersion of "3" or lower. Devices running older versions of the platform will simply ignore this element, but newer devices will recognize it and enforce installation restrictions based on whether the device supports the feature.

Note: For each feature required by your application, you must include a new <uses-feature> element. Multiple features cannot be declared in one instance of this element.

android:glEsVersion

The GLES version needed by the application. The higher 16 bits represent the major number and the lower 16 bits represent the minor number. For example, for GL 1.2, the value should be set as 0x00010002.

android:name

The name of a feature required by the application. The value must be one of the following accepted strings:

Feature	Value	Description
Camera	android.hardware.camera	The application requires a camera.
	Note: Any application that requests the CAMERA permission but does not declare any camera features with the <uses-feature> element will be assumed to use all camera features (auto-focus and flash). Thus, the application will not be compatible with devices that do not support all camera features. Please use <uses-feature> to declare only the camera features that your application does need. For instance, if you request the CAMERA permission, but you do not need auto-focus or flash, then declare only the android.hardware.camera feature—the other camera features that you do not request will no longer be assumed as required.
Camera auto-focus	android.hardware.camera.autofocus	The application requires a camera with auto-focus capability. As a prerequisite, android.hardware.camera must also be declared with a separate <uses-feature> element.
Camera flash	android.hardware.camera.flash	The application requires a camera with a flash. As a prerequisite, both android.hardware.camera and android.hardware.camera.autofocus must also be declared with separate <uses-feature> elements.
Light sensor	android.hardware.sensor.light	The application requires a device with a light sensor.
Proximity sensor	android.hardware.sensor.proximity	The application requires a device with a proximity sensor.
Multitouch screen	android.hardware.touchscreen.multitouch	The application requires a device that supports multitouch.
Telephony	android.hardware.telephony	The application requires a device that includes a telephony radio with data communication services.
CDMA telephony	android.hardware.telephony.cdma	The application requires a device that includes a CDMA telephony radio. As a prerequisite, android.hardware.telephony must also be declared with a separate <uses-feature> element.
GSM telephony	android.hardware.telephony.gsm	The application requires a device that includes a GSM telephony radio. As a prerequisite, android.hardware.telephony must also be declared with a separate <uses-feature> element.

android:required

Indicates whether the feature is required by the application. This is true by default. You should not use this attribute for most cases.

The only situation in which you should set this attribute false is when your application requests the CAMERA permission, but will degrade gracefully and perform without failure if the device does not have a camera. In this situation, you must declare the android.hardware.camera feature and set the required attribute false. This is necessary because the CAMERA permission will automatically turn on the requirement for all camera features. So if your application uses this permission but is still compatible with devices without a camera, then you must set the required attribute false for android.hardware.camera or else it will not install on devices without a camera. Note that, while the permission will enable the requirement for all camera features, you only need to off the requirement for the basic camera feature.

• ConfigurationInfo