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Android Development
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<uses-configuration>

syntax:
<uses-configuration android:
reqFiveWayNav=["true" | "false"] 
                    android:
reqHardKeyboard=["true" | "false"]
                    android:
reqKeyboardType=["undefined" | "nokeys" | "qwerty" |  
                                             "twelvekey"]
                    android:
reqNavigation=["undefined" | "nonav" | "dpad" | 
                                           "trackball" | "wheel"]
                    android:
reqTouchScreen=["undefined" | "notouch" | "stylus" | 
                                            "finger"] />
contained in:
<manifest>
description:
Indicates what hardware and software features the application requires. For example, an application might specify that it requires a physical keyboard or a particular navigation device, like a trackball. The specification is used to avoid installing the application on devices where it will not work.

If an application can work with different device configurations, it should include separate <uses-configuration> declarations for each one. Each declaration must be complete. For example, if an application requires a five-way navigation control, a touch screen that can be operated with a finger, and either a standard QWERTY keyboard or a numeric 12-key keypad like those found on most phones, it would specify these requirements with two <uses-configuration> elements as follows:

<uses-configuration android:reqFiveWayNav="true" android:reqTouchScreen="finger"
                    android:reqKeyboardType="qwerty" />
<uses-configuration android:reqFiveWayNav="true" android:reqTouchScreen="finger"
                    android:reqKeyboardType="twelvekey" />
attributes:
android:reqFiveWayNav
Whether or not the application requires a five-way navigation control — "true" if it does, and "false" if not. A five-way control is one that can move the selection up, down, right, or left, and also provides a way of invoking the current selection. It could be a D-pad (directional pad), trackball, or other device.

If an application requires a directional control, but not a control of a particular type, it can set this attribute to "true" and ignore the reqNavigation attribute. However, if it requires a particular type of directional control, it can ignore this attribute and set reqNavigation instead.

android:reqHardKeyboard
Whether or not the application requires a hardware keyboard — "true" if it does, and "false" if not.
android:reqKeyboardType
The type of keyboard the application requires, if any at all. This attribute does not distinguish between hardware and software keyboards. If a hardware keyboard of a certain type is required, specify the type here and also set the reqHardKeyboard attribute to "true".

The value must be one of the following strings:

Value Description
"undefined" The application does not require a keyboard. (A keyboard requirement is not defined.) This is the default value.
"nokeys" The application does not require a keyboard.
"qwerty" The application requires a standard QWERTY keyboard.
"twelvekey" The application requires a twelve-key keypad, like those on most phones — with keys for the digits from 0 through 9 plus star (*) and pound (#) keys.
android:reqNavigation
The navigation device required by the application, if any. The value must be one of the following strings:
Value Description
"undefined" The application does not require any type of navigation control. (The navigation requirement is not defined.) This is the default value.
"nonav" The application does not require a navigation control.
"dpad" The application requires a D-pad (directional pad) for navigation.
"trackball" The application requires a trackball for navigation.
"wheel" The application requires a navigation wheel.

If an application requires a navigational control, but the exact type of control doesn't matter, it can set the reqFiveWayNav attribute to "true" rather than set this one.

android:reqTouchScreen
The type of touch screen the application requires, if any at all. The value must be one of the following strings:
Value Description
"undefined" The application doesn't require a touch screen. (The touch screen requirement is undefined.) This is the default value.
"notouch" The application doesn't require a touch screen.
"stylus" The application requires a touch screen that's operated with a stylus.
"finger" The application requires a touch screen that can be operated with a finger.
introduced in:
API Level 3
see also:
configChanges attribute of the <activity> element
Android Development
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  Published under the terms fo the Apache 2.0 License Design by Interspire  

   
  Published under the terms fo the Apache 2.0 License Design by Interspire