如何停止Android以捕获key code_f2和keycode_f4?

我正在尝试捕获设备上可用的硬件键盘上的所有键。这个设备带有功能键(至少我可以将硬件键映射到Fire F2和F4)。

每次按F2或F4时,设备都使用分配给这些键的系统功能。对于F2,它暂停(休眠)设备,而F4显示应用程序切换屏幕。

我可以得到从F1到F10的所有其他功能键,除了那些F2和F4。

adb shell getevent -lt /dev/input/event4

    [    1141.537066] EV_MSC       MSC_SCAN             00000000
    [    1141.537096] EV_KEY       KEY_F1               DOWN
    [    1141.537096] EV_SYN       SYN_REPORT           00000000
    [    1141.752672] EV_MSC       MSC_SCAN             00000000
    [    1141.752672] EV_KEY       KEY_F1               UP
    [    1141.752703] EV_SYN       SYN_REPORT           00000000
    [    1143.004565] EV_MSC       MSC_SCAN             00000001
    [    1143.004565] EV_KEY       KEY_F2               DOWN
    [    1143.004595] EV_SYN       SYN_REPORT           00000000
    [    1143.202959] EV_MSC       MSC_SCAN             00000001
    [    1143.202990] EV_KEY       KEY_F2               UP
    [    1143.202990] EV_SYN       SYN_REPORT           00000000
    [    1144.610461] EV_MSC       MSC_SCAN             00000002
    [    1144.610461] EV_KEY       KEY_F3               DOWN
    [    1144.610491] EV_SYN       SYN_REPORT           00000000
    [    1144.808031] EV_MSC       MSC_SCAN             00000002
    [    1144.808031] EV_KEY       KEY_F3               UP
    [    1144.808062] EV_SYN       SYN_REPORT           00000000
    [    1146.466601] EV_MSC       MSC_SCAN             00000003
    [    1146.466631] EV_KEY       KEY_F4               DOWN
    [    1146.466631] EV_SYN       SYN_REPORT           00000000
    [    1146.670946] EV_MSC       MSC_SCAN             00000003
    [    1146.670977] EV_KEY       KEY_F4               UP
    [    1146.670977] EV_SYN       SYN_REPORT           00000000

在WindowsMobile6设备上,许多F键都有这个问题,但可以通过使用WM SDK中的allkeys(true)轻松解决。

键是正确生成的,正如我在adb shell getvent中看到的那样…

在Android Java应用程序中,我需要什么代码才能获得F2和F4?

更新:代码(尽管标准)

    edit1.setKeyListener(new KeyListener() {
        @Override
        public int getInputType() {
            return  InputType.TYPE_TEXT_FLAG_MULTI_LINE | InputType.TYPE_CLASS_TEXT;
        }

        @Override
        public boolean onKeyDown(View view, Editable text, int keyCode, KeyEvent event) {
            String name = getResources().getResourceEntryName(view.getId());
            String action = "onKeyDown";

            final String message = "[KeyEvent, {name:" + name +
                    "},{action:" + action +
                    "},{code:" + String.valueOf(keyCode) +
                    "},{chars:" + event.getCharacters() +
                    "},{char:" + event.getUnicodeChar() +
                    "},{scode:" + event.getScanCode() +
                    "}]";
            Log.d(TAG, message);
            addLog(message);
            return false;
        }

完整测试代码 https://github.com/hjgode/KeyTest/blob/master/app/src/main/java/com/example/e841719/keytest/KeyTest.java