Android源码分析（十）-----关机菜单中如何添加飞行模式选项

一：关机菜单添加飞行模式选项

源码路径：frameworks/base/core/res/res/values/config.xml
增加<item>airplane</item>

    <!-- Defines the default set of global actions. Actions may still be disabled or hidden based
         on the current state of the device.
         Each item must be one of the following strings:
         "power" = Power off
         "settings" = An action to launch settings
         "airplane" = Airplane mode toggle
         "bugreport" = Take bug report, if available
         "silent" = silent mode
         "users" = list of users
         "restart" = restart device
         -->
    <string-array translatable="false" name="config_globalActionsList">
        <item>power</item>
        <item>restart</item>
        <item>airplane</item>
        <item>bugreport</item>
        <item>users</item>
    </string-array>

二：GlobalActionsDialog.java

源码路径：com/android/systemui/globalactions/GlobalActionsDialog.java
主要关注createDialog()方法，如果需要定制Dialog请自行去研究ActionDialog 此处不做过多解释

    /**
     * Create the global actions dialog.
     *
     * @return A new dialog.
     */
    private ActionsDialog createDialog() {
        // Simple toggle style if there's no vibrator, otherwise use a tri-state
        if (!mHasVibrator) {
            mSilentModeAction = new SilentModeToggleAction();
        } else {
            mSilentModeAction = new SilentModeTriStateAction(mContext, mAudioManager, mHandler);
        }
        mAirplaneModeOn = new ToggleAction(
                R.drawable.ic_lock_airplane_mode,
                R.drawable.ic_lock_airplane_mode_off,
                R.string.global_actions_toggle_airplane_mode,
                R.string.global_actions_airplane_mode_on_status,
                R.string.global_actions_airplane_mode_off_status) {

            void onToggle(boolean on) {
                if (mHasTelephony && Boolean.parseBoolean(
                        SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE))) {
                    mIsWaitingForEcmExit = true;
                    // Launch ECM exit dialog
                    Intent ecmDialogIntent =
                            new Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS, null);
                    ecmDialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    mContext.startActivity(ecmDialogIntent);
                } else {
                    changeAirplaneModeSystemSetting(on);
                }
            }

            @Override
            protected void changeStateFromPress(boolean buttonOn) {
                if (!mHasTelephony) return;

                // In ECM mode airplane state cannot be changed
                if (!(Boolean.parseBoolean(
                        SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE)))) {
                    mState = buttonOn ? State.TurningOn : State.TurningOff;
                    mAirplaneState = mState;
                }
            }

            public boolean showDuringKeyguard() {
                return true;
            }

            public boolean showBeforeProvisioning() {
                return false;
            }
        };
        onAirplaneModeChanged();

        mItems = new ArrayList<Action>();
        String[] defaultActions = mContext.getResources().getStringArray(
                R.array.config_globalActionsList);

        ArraySet<String> addedKeys = new ArraySet<String>();
        for (int i = 0; i < defaultActions.length; i++) {
            String actionKey = defaultActions[i];
            if (addedKeys.contains(actionKey)) {
                // If we already have added this, don't add it again.
                continue;
            }
            if (GLOBAL_ACTION_KEY_POWER.equals(actionKey)) {
                mItems.add(new PowerAction());
            } else if (GLOBAL_ACTION_KEY_AIRPLANE.equals(actionKey)) {
                mItems.add(mAirplaneModeOn);
            } else if (GLOBAL_ACTION_KEY_BUGREPORT.equals(actionKey)) {
                if (Settings.Global.getInt(mContext.getContentResolver(),
                        Settings.Global.BUGREPORT_IN_POWER_MENU, 0) != 0 && isCurrentUserOwner()) {
                    mItems.add(new BugReportAction());
                }
            } else if (GLOBAL_ACTION_KEY_SILENT.equals(actionKey)) {
                if (mShowSilentToggle) {
                    mItems.add(mSilentModeAction);
                }
            } else if (GLOBAL_ACTION_KEY_USERS.equals(actionKey)) {
                if (SystemProperties.getBoolean("fw.power_user_switcher", false)) {
                    addUsersToMenu(mItems);
                }
            } else if (GLOBAL_ACTION_KEY_SETTINGS.equals(actionKey)) {
                mItems.add(getSettingsAction());
            } else if (GLOBAL_ACTION_KEY_LOCKDOWN.equals(actionKey)) {
                mItems.add(getLockdownAction());
            } else if (GLOBAL_ACTION_KEY_VOICEASSIST.equals(actionKey)) {
                mItems.add(getVoiceAssistAction());
            } else if (GLOBAL_ACTION_KEY_ASSIST.equals(actionKey)) {
                mItems.add(getAssistAction());
            } else if (GLOBAL_ACTION_KEY_RESTART.equals(actionKey)) {
                mItems.add(new RestartAction());
            } else {
                Log.e(TAG, "Invalid global action key " + actionKey);
            }
            // Add here so we don't add more than one.
            addedKeys.add(actionKey);
        }

        if (mEmergencyAffordanceManager.needsEmergencyAffordance()) {
            mItems.add(getEmergencyAction());
        }

        mAdapter = new MyAdapter();

        OnItemLongClickListener onItemLongClickListener = new OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position,
                    long id) {
                final Action action = mAdapter.getItem(position);
                if (action instanceof LongPressAction) {
                    mDialog.dismiss();
                    return ((LongPressAction) action).onLongPress();
                }
                return false;
            }
        };
        ActionsDialog dialog = new ActionsDialog(mContext, this, mAdapter, onItemLongClickListener);
        dialog.setCanceledOnTouchOutside(false); // Handled by the custom class.
        dialog.setKeyguardShowing(mKeyguardShowing);

        dialog.setOnDismissListener(this);

        return dialog;
    }

如果关机菜单中显示有问题，请按下面修改，Andnroid8.0代码中有些布局文件同名，可能出现引用错误

@@ -944,8 +944,8 @@ class GlobalActionsDialog implements DialogInterface.OnDismissListener, DialogIn
                 LayoutInflater inflater) {
             willCreate();
 
-            View v = inflater.inflate(R
-                    .layout.global_actions_item, parent, false);
+            View v = inflater.inflate(com
+                    .android.systemui.R.layout.global_actions_item, parent, false);
 
             ImageView icon = (ImageView) v.findViewById(R.id.icon);
             TextView messageView = (TextView) v.findViewById(R.id.message);

如果飞行模式功能无效， 尝试下面修改

@@ -1179,7 +1179,7 @@ class GlobalActionsDialog implements DialogInterface.OnDismissListener, DialogIn
 
     private void onAirplaneModeChanged() {
         // Let the service state callbacks handle the state.
-        if (mHasTelephony) return;
+        if (!mHasTelephony) return;
 
         boolean airplaneModeOn = Settings.Global.getInt(
                 mContext.getContentResolver(),

如果显示样式和开关机选项有差别， 按如下修改，隐藏statusView

@@ -966,7 +966,7 @@ class GlobalActionsDialog implements DialogInterface.OnDismissListener, DialogIn
 
             if (statusView != null) {
                 statusView.setText(on ? mEnabledStatusMessageResId : mDisabledStatusMessageResId);
-                statusView.setVisibility(View.VISIBLE);
+                statusView.setVisibility(View.GONE);
                 statusView.setEnabled(enabled);
             }
             v.setEnabled(enabled);

---

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