Android4.1添加新的按鍵(3)

原創

simonjay2007

2020-02-21 02:25

添加新的物理按鍵 DECT_REGISTER, DECT_PHONE
1.kl文件添加按鍵碼映射，251，252 是驅動上報上來的鍵值
key 251 DECT_REGISTER
key 252 DECT_PHONE
2.frameworks/base/include/androidfw/KeycodeLabels.h
對KEYCODES，添加按鍵碼
static const KeycodeLabel KEYCODES[] = {
...
{ "DECT_REGISTER",220},
{ "DECT_PHONE",221},
3.frameworks/base/core/res/res/values/attr.xml
<enum name="KEYCODE_DECT_REGISTER" value="220"/>
<enum name="KEYCODE_DECT_PHONE" value="221"/>
4.frameworks/native/include/android/keycode.h
enum {
    AKEYCODE_UNKNOWN         = 0,
    ....
    ....
添加
AKEYCODE_DECT_REGISTER   =220,
AKEYCODE_DECT_PHONE      =221,
5.frameworks/base/core/java/android/view/KeyEvent.java
添加
public static final int KEYCODE_DECT_REGISTER=   220;
public static final int KEYCODE_DECT_PHONE=221;
修改 LAST_KEYCODE 和 KEYCODE_SYMBOLIC_NAMES
private static final int LAST_KEYCODE           = KEYCODE_DECT_REGISTER;
// NOTE: If you add a new keycode here you must also add it to:
// isSystem()
// native/include/android/keycodes.h
// frameworks/base/include/ui/KeycodeLabels.h
// external/webkit/WebKit/android/plugins/ANPKeyCodes.h
// frameworks/base/core/res/res/values/attrs.xml
// emulator?
// LAST_KEYCODE
// KEYCODE_SYMBOLIC_NAMES
private static void populateKeycodeSymbolicNames() {
        SparseArray<String> names = KEYCODE_SYMBOLIC_NAMES;
        names.append(KEYCODE_UNKNOWN, "KEYCODE_UNKNOWN");
        ...
        ...
        names.append(KEYCODE_DECT_REGISTER, "KEYCODE_DECT_REGISTER");
        names.append(KEYCODE_DECT_PHONE, "KEYCODE_DECT_PHONE");
}
修改 isSystem(),追蹤jni需要修改frameworks/base/lib/androidrw/input.cpp KeyEvent::isSystemKey
bool KeyEvent::isSystemKey(int32_t keyCode) {
    switch (keyCode) {
        ....
        case AKEYCODE_DECT_REGISTER:
        case AKEYCODE_DECT_PHONE:
            return true;
    }
    return false;
}
6.external/webkit/Source/WebKit/android/plugins/ANPKeyCodes.h
修改
   enum ANPKeyCodes {
    kUnknown_ANPKeyCode = 0,
   ...
   ...
   kDectRegister_ANPKeyCode=220,
   kDectPhone_ANPKeyCode=221,
}
以上修改完成後，可以在PhoneWindowManager 測試下這個兩個鍵是否成功上報，如果上報成功，就可以在自己的應用中添加與這個按鍵相關的邏輯處理。