android 物理键盘布局

背景描述:

在设置中, 物理键的键盘布局是系统有提供几种选择, 当选择其中如:法语, 则,输出字符会变为对应的法语.

设置中,键盘布局列表获取:

packages/Settings/src/com/android/settings/inputmethod/KeyboardLayoutDialogFragment.java        @Override    public void onCreate(Bundle icicle) {        super.onCreate(icicle);        mInputDeviceDescriptor = getActivity().getIntent().getStringExtra(                EXTRA_INPUT_DEVICE_DESCRIPTOR);        if (mInputDeviceDescriptor == null) {            getActivity().finish();        }        mIm = (InputManager)getSystemService(Context.INPUT_SERVICE);        mKeyboardLayouts = mIm.getKeyboardLayouts();//获取所有布局        Arrays.sort(mKeyboardLayouts);        setPreferenceScreen(createPreferenceHierarchy());    }

2. 输入服务中的实现:

frameworks/base/services/java/com/android/server/input/InputManagerService.java    private void visitAllKeyboardLayouts(KeyboardLayoutVisitor visitor) {        final PackageManager pm = mContext.getPackageManager();        Intent intent = new Intent(InputManager.ACTION_QUERY_KEYBOARD_LAYOUTS);//关键        for (ResolveInfo resolveInfo : pm.queryBroadcastReceivers(intent,                PackageManager.GET_META_DATA)) {            visitKeyboardLayoutsInPackage(pm, resolveInfo.activityInfo, null, visitor);        }    }@Override // Binder call    public KeyboardLayout[] getKeyboardLayouts() {        final ArrayList<KeyboardLayout> list = new ArrayList<KeyboardLayout>();        visitAllKeyboardLayouts(new KeyboardLayoutVisitor() {            @Override            public void visitKeyboardLayout(Resources resources,                    String descriptor, String label, String collection, int keyboardLayoutResId) {                list.add(new KeyboardLayout(descriptor, label, collection));            }        });//主要干活的地方.        return list.toArray(new KeyboardLayout[list.size()]);    }

跟着去哪?

终于知道InputDevices是干嘛用的了....

frameworks/base/packages/InputDevices/AndroidManifest.xml<manifest xmlns:android="http://schemas.android.com/apk/res/android"        package="com.android.inputdevices"        coreApp="true"        android:sharedUserId="android.uid.system">    <application            android:allowClearUserData="false"            android:label="@string/app_label"            android:process="system">        <receiver android:name=".InputDeviceReceiver"                android:label="@string/keyboard_layouts_label">            <intent-filter>                <action android:name="android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS" /><!--关键部分-->            </intent-filter>            <meta-data android:name="android.hardware.input.metadata.KEYBOARD_LAYOUTS"                    android:resource="@xml/keyboard_layouts" /><!--有必要看看这个XML-->        </receiver>    </application></manifest>

<?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" /><!--这是啥?-->    <keyboard-layout android:name="keyboard_layout_english_us_dvorak"            android:label="@string/keyboard_layout_english_us_dvorak_label"            android:keyboardLayout="@raw/keyboard_layout_english_us_dvorak" />    <keyboard-layout android:name="keyboard_layout_german"            android:label="@string/keyboard_layout_german_label"            android:keyboardLayout="@raw/keyboard_layout_german" />    <keyboard-layout android:name="keyboard_layout_french"            android:label="@string/keyboard_layout_french_label"            android:keyboardLayout="@raw/keyboard_layout_french" />    <keyboard-layout android:name="keyboard_layout_french_ca"            android:label="@string/keyboard_layout_french_ca_label"            android:keyboardLayout="@raw/keyboard_layout_french_ca" />    <keyboard-layout android:name="keyboard_layout_russian"            android:label="@string/keyboard_layout_russian_label"            android:keyboardLayout="@raw/keyboard_layout_russian" />    <keyboard-layout android:name="keyboard_layout_russian_mac"            android:label="@string/keyboard_layout_russian_mac_label"            android:keyboardLayout="@raw/keyboard_layout_russian_mac" />    <keyboard-layout android:name="keyboard_layout_spanish"            android:label="@string/keyboard_layout_spanish_label"            android:keyboardLayout="@raw/keyboard_layout_spanish" />    <keyboard-layout android:name="keyboard_layout_swiss_french"            android:label="@string/keyboard_layout_swiss_french_label"            android:keyboardLayout="@raw/keyboard_layout_swiss_french" />    <keyboard-layout android:name="keyboard_layout_swiss_german"            android:label="@string/keyboard_layout_swiss_german_label"            android:keyboardLayout="@raw/keyboard_layout_swiss_german" />    <keyboard-layout android:name="keyboard_layout_belgian"            android:label="@string/keyboard_layout_belgian"            android:keyboardLayout="@raw/keyboard_layout_belgian" />    <keyboard-layout android:name="keyboard_layout_bulgarian"            android:label="@string/keyboard_layout_bulgarian"            android:keyboardLayout="@raw/keyboard_layout_bulgarian" />    <keyboard-layout android:name="keyboard_layout_italian"            android:label="@string/keyboard_layout_italian"            android:keyboardLayout="@raw/keyboard_layout_italian" />    <keyboard-layout android:name="keyboard_layout_danish"            android:label="@string/keyboard_layout_danish"            android:keyboardLayout="@raw/keyboard_layout_danish" />    <keyboard-layout android:name="keyboard_layout_norwegian"            android:label="@string/keyboard_layout_norwegian"            android:keyboardLayout="@raw/keyboard_layout_norwegian" />    <keyboard-layout android:name="keyboard_layout_swedish"            android:label="@string/keyboard_layout_swedish"            android:keyboardLayout="@raw/keyboard_layout_swedish" />    <keyboard-layout android:name="keyboard_layout_finnish"            android:label="@string/keyboard_layout_finnish"            android:keyboardLayout="@raw/keyboard_layout_finnish" />    <keyboard-layout android:name="keyboard_layout_croatian"            android:label="@string/keyboard_layout_croatian"            android:keyboardLayout="@raw/keyboard_layout_croatian_and_slovenian" />    <keyboard-layout android:name="keyboard_layout_czech"            android:label="@string/keyboard_layout_czech"            android:keyboardLayout="@raw/keyboard_layout_czech" />    <keyboard-layout android:name="keyboard_layout_estonian"            android:label="@string/keyboard_layout_estonian"            android:keyboardLayout="@raw/keyboard_layout_estonian" />    <keyboard-layout android:name="keyboard_layout_hungarian"            android:label="@string/keyboard_layout_hungarian"            android:keyboardLayout="@raw/keyboard_layout_hungarian" />    <keyboard-layout android:name="keyboard_layout_icelandic"            android:label="@string/keyboard_layout_icelandic"            android:keyboardLayout="@raw/keyboard_layout_icelandic" />    <keyboard-layout android:name="keyboard_layout_portuguese"            android:label="@string/keyboard_layout_portuguese"            android:keyboardLayout="@raw/keyboard_layout_portuguese" />    <keyboard-layout android:name="keyboard_layout_slovak"            android:label="@string/keyboard_layout_slovak"            android:keyboardLayout="@raw/keyboard_layout_slovak" />    <keyboard-layout android:name="keyboard_layout_slovenian"            android:label="@string/keyboard_layout_slovenian"            android:keyboardLayout="@raw/keyboard_layout_croatian_and_slovenian" />    <keyboard-layout android:name="keyboard_layout_turkish"            android:label="@string/keyboard_layout_turkish"            android:keyboardLayout="@raw/keyboard_layout_turkish" />    <keyboard-layout android:name="keyboard_layout_ukrainian"            android:label="@string/keyboard_layout_ukrainian"            android:keyboardLayout="@raw/keyboard_layout_ukrainian" /></keyboard-layouts>

下面是一个KCM文件:

# Copyright (C) 2012 The Android Open Source Project## Licensed under the Apache License, Version 2.0 (the "License");# you may not use this file except in compliance with the License.# You may obtain a copy of the License at##      http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing, software# distributed under the License is distributed on an "AS IS" BASIS,# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.# See the License for the specific language governing permissions and# limitations under the License.## English (US) keyboard layout.# Unlike the default (generic) keyboard layout, English (US) does not contain any# special ALT characters.#type OVERLAY### ROW 1key GRAVE {    label:                              '`'    base:                               '`'    shift:                              '~'}key 1 {    label:                              '1'    base:                               '1'    shift:                              '!'}key 2 {    label:                              '2'    base:                               '2'    shift:                              '@'}key 3 {    label:                              '3'    base:                               '3'    shift:                              '#'}key 4 {    label:                              '4'    base:                               '4'    shift:                              '$'}key 5 {    label:                              '5'    base:                               '5'    shift:                              '%'}key 6 {    label:                              '6'    base:                               '6'    shift:                              '^'}key 7 {    label:                              '7'    base:                               '7'    shift:                              '&'}key 8 {    label:                              '8'    base:                               '8'    shift:                              '*'}key 9 {    label:                              '9'    base:                               '9'    shift:                              '('}key 0 {    label:                              '0'    base:                               '0'    shift:                              ')'}key MINUS {    label:                              '-'    base:                               '-'    shift:                              '_'}key EQUALS {    label:                              '='    base:                               '='    shift:                              '+'}### ROW 2key Q {    label:                              'Q'    base:                               'q'    shift, capslock:                    'Q'}key W {    label:                              'W'    base:                               'w'    shift, capslock:                    'W'}key E {    label:                              'E'    base:                               'e'    shift, capslock:                    'E'}key R {    label:                              'R'    base:                               'r'    shift, capslock:                    'R'}key T {    label:                              'T'    base:                               't'    shift, capslock:                    'T'}key Y {    label:                              'Y'    base:                               'y'    shift, capslock:                    'Y'}key U {    label:                              'U'    base:                               'u'    shift, capslock:                    'U'}key I {    label:                              'I'    base:                               'i'    shift, capslock:                    'I'}key O {    label:                              'O'    base:                               'o'    shift, capslock:                    'O'}key P {    label:                              'P'    base:                               'p'    shift, capslock:                    'P'}key LEFT_BRACKET {    label:                              '['    base:                               '['    shift:                              '{'}key RIGHT_BRACKET {    label:                              ']'    base:                               ']'    shift:                              '}'}key BACKSLASH {    label:                              '\\'    base:                               '\\'    shift:                              '|'}### ROW 3key A {    label:                              'A'    base:                               'a'    shift, capslock:                    'A'}key S {    label:                              'S'    base:                               's'    shift, capslock:                    'S'}key D {    label:                              'D'    base:                               'd'    shift, capslock:                    'D'}key F {    label:                              'F'    base:                               'f'    shift, capslock:                    'F'}key G {    label:                              'G'    base:                               'g'    shift, capslock:                    'G'}key H {    label:                              'H'    base:                               'h'    shift, capslock:                    'H'}key J {    label:                              'J'    base:                               'j'    shift, capslock:                    'J'}key K {    label:                              'K'    base:                               'k'    shift, capslock:                    'K'}key L {    label:                              'L'    base:                               'l'    shift, capslock:                    'L'}key SEMICOLON {    label:                              ';'    base:                               ';'    shift:                              ':'}key APOSTROPHE {    label:                              '\''    base:                               '\''    shift:                              '"'}### ROW 4key Z {    label:                              'Z'    base:                               'z'    shift, capslock:                    'Z'}key X {    label:                              'X'    base:                               'x'    shift, capslock:                    'X'}key C {    label:                              'C'    base:                               'c'    shift, capslock:                    'C'}key V {    label:                              'V'    base:                               'v'    shift, capslock:                    'V'}key B {    label:                              'B'    base:                               'b'    shift, capslock:                    'B'}key N {    label:                              'N'    base:                               'n'    shift, capslock:                    'N'}key M {    label:                              'M'    base:                               'm'    shift, capslock:                    'M'}key COMMA {    label:                              ','    base:                               ','    shift:                              '<'}key PERIOD {    label:                              '.'    base:                               '.'    shift:                              '>'}key SLASH {    label:                              '/'    base:                               '/'    shift:                              '?'}

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