Книга: Beginning Android

Make Your Demands Heard

Make Your Demands Heard

In addition to using the target ID system to indicate what level of device your project is targeting, you can use a new AndroidManifest.xml element to specify hardware that is required for your application to run properly.

You can add one or more <uses-configuration> elements inside the <manifest> element. Each <uses-configuration> element specifies one valid configuration of hardware that your application will work with.

At the present time, there are five possible hardware requirements you can specify this way:

• android:reqFiveWayNav to indicate you need a 5-way navigation pointing device of some form (e.g., android:reqFiveWayNav="true")

• android:reqNavigation to restrict the 5-way navigation pointing device to a specific type (e.g., android:reqNavigation="trackball")

• android:reqHardKeyboard to specify if a hardware (physical) keyboard is required (e.g., android:reqHardKeyboard="true")

• android:reqKeyboardType, probably used in conjunction with android:reqHardKeyboard, to indicate a specific type of hardware keyboard that is required (e.g., android:reqKeyboardType="qwerty")

• android:reqTouchScreen to indicate what type of touchscreen is required, if any (e.g., android:reqTouchScreen="finger")

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