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android 按menu键解锁功能的开关

IT知识android

仓廪实则知礼节，衣食足则知荣辱。这篇文章主要讲述android 按menu键解锁功能的开关相关的知识，希望能为你提供帮助。
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
【android 按menu键解锁功能的开关】:~/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();
                              }

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