InputManager

Broadcast Action: Query available keyboard layouts.

The input manager service locates available keyboard layouts by querying broadcast receivers that are registered for this action. An application can offer additional keyboard layouts to the user by declaring a suitable broadcast receiver in its manifest.

Here is an example broadcast receiver declaration that an application might include in its AndroidManifest.xml to advertise keyboard layouts. The meta-data specifies a resource that contains a description of each keyboard layout that is provided by the application.

 <receiver android:name=".InputDeviceReceiver"
         android:label="@string/keyboard_layouts_label">
     <intent-filter>
         <action android:name="android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS" />
     </intent-filter>
     <meta-data android:name="android.hardware.input.metadata.KEYBOARD_LAYOUTS"
             android:resource="@xml/keyboard_layouts" />
 </receiver>
 

In the above example, the @xml/keyboard_layouts resource refers to an XML resource whose root element is <keyboard-layouts> that contains zero or more <keyboard-layout> elements. Each <keyboard-layout> element specifies the name, label, and location of a key character map for a particular keyboard layout. The label on the receiver is used to name the collection of keyboard layouts provided by this receiver in the keyboard layout settings.

 <?xml version="1.0" encoding="utf-8"?>
 <keyboard-layouts xmlns:android="http://schemas.android.com/apk/res/android">
     <keyboard-layout android:name="keyboard_layout_english_us"
             android:label="@string/keyboard_layout_english_us_label"
             android:keyboardLayout="@raw/keyboard_layout_english_us" />
 </keyboard-layouts>
 

 The android:name attribute specifies an identifier by which
 the keyboard layout will be known in the package.
 The android:label attributes specifies a human-readable descriptive
 label to describe the keyboard layout in the user interface, such as "English (US)".
 The android:keyboardLayout attribute refers to a
 
 key character map resource that defines the keyboard layout.
 

Metadata Key: Keyboard layout metadata associated with ACTION_QUERY_KEYBOARD_LAYOUTS.

Specifies the resource id of a XML resource that describes the keyboard layouts that are provided by the application.

Gets information about the input device with the specified id.

Gets the ids of all input devices in the system.

Registers an input device listener to receive notifications about when input devices are added, removed or changed.

Unregisters an input device listener.