android 4.4

android 5.0

android 5.1

修改文件frameworks\base\packages\Keyguard\res\values\config.xml

里的

    <!-- Allow the menu hard key to be disabled in LockScreen on some devices [DO NOT TRANSLATE] -->

    <bool name="config_disableMenuKeyInLockScreen">false</bool>

改为true 即可禁用该功能。

 

在5.1中

:~/code/ardroid5.1/frameworks/base/packages/Keyguard$ grep -rin "config_disableMenuKeyInLockScreen" ./

./res/values/config.xml:30:    <bool name="config_disableMenuKeyInLockScreen">false</bool>

./src/com/android/keyguard/KeyguardViewBase.java:412:        final boolean configDisabled = res.getBoolean(R.bool.config_disableMenuKeyInLockScreen);

:~/code/ardroid5.1/frameworks/base/packages/Keyguard$ grep -rin "configDisabled" ./

./src/com/android/keyguard/KeyguardViewBase.java:412:        final boolean configDisabled = res.getBoolean(R.bool.config_disableMenuKeyInLockScreen);

./src/com/android/keyguard/KeyguardViewBase.java:415:        return !configDisabled || isTestHarness || fileOverride;

:~/code/ardroid5.1/frameworks/base/packages/Keyguard$ vim ./src/com/android/keyguard/KeyguardViewBase.java +415

private static final String ENABLE_MENU_KEY_FILE = "/data/local/enable_menu_key";

    private boolean shouldEnableMenuKey() {

        final Resources res = getResources();

        final boolean configDisabled = res.getBoolean(R.bool.config_disableMenuKeyInLockScreen);

        final boolean isTestHarness = ActivityManager.isRunningInTestHarness();

        final boolean fileOverride = (new File(ENABLE_MENU_KEY_FILE)).exists();

        return !configDisabled || isTestHarness || fileOverride;

    }

:~/code/ardroid5.1/frameworks/base/packages/Keyguard$ grep -rin "shouldEnableMenuKey" ./

./src/com/android/keyguard/KeyguardViewBase.java:410:    private boolean shouldEnableMenuKey() {

./src/com/android/keyguard/KeyguardViewBase.java:421:        if (shouldEnableMenuKey() && !mLockPatternUtils.isSecure()) {

:~/code/ardroid5.1/frameworks/base/packages/Keyguard$ vim ./src/com/android/keyguard/KeyguardViewBase.java +421

    public boolean handleMenuKey() {

        // The following enables the MENU key to work for testing automation

        if (shouldEnableMenuKey() && !mLockPatternUtils.isSecure()) {

            dismiss();

            return true;

        }

        return false;

    }

:~/code/ardroid5.1/frameworks/base/packages/SystemUI$ grep -rin "handleMenuKey" ./

./src/com/android/systemui/statusbar/phone/KeyguardBouncer.java:226:        if (mKeyguardView.handleMenuKey()) {

    public boolean onMenuPressed() {

        ensureView();

        if (mKeyguardView.handleMenuKey()) {

            // We need to show it in case it is secure. If not, it will get dismissed in any case.

            mRoot.setVisibility(View.VISIBLE);

            mKeyguardView.requestFocus();

            mKeyguardView.onResume();

            return true;

        } else {

            return false;

        }

    }

:~/code/ardroid5.1/frameworks/base/packages/SystemUI$ grep -rin "onMenuPressed" ./

./src/com/android/systemui/statusbar/phone/KeyguardBouncer.java:224:    public boolean onMenuPressed() {

./src/com/android/systemui/statusbar/phone/PhoneStatusBar.java:3875:    public boolean onMenuPressed() {

./src/com/android/systemui/statusbar/phone/PhoneStatusBar.java:3876:        return mState == StatusBarState.KEYGUARD && mStatusBarKeyguardViewManager.onMenuPressed();

./src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java:406:    public boolean onMenuPressed() {

./src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java:407:        return mBouncer.onMenuPressed();

./src/com/android/systemui/statusbar/phone/StatusBarWindowView.java:132:                    return mService.onMenuPressed();

./src/com/android/systemui/statusbar/phone/StatusBarWindowView.java:132:                    return mService.onMenuPressed();

    @Override

    public boolean dispatchKeyEvent(KeyEvent event) {

        boolean down = event.getAction() == KeyEvent.ACTION_DOWN;

        switch (event.getKeyCode()) {

            case KeyEvent.KEYCODE_BACK:

                if (!down) {

                    mService.onBackPressed();

                }

                return true;

            case KeyEvent.KEYCODE_MENU:

                if (!down) {

                    return mService.onMenuPressed();

                }