Android side navigation bar editing AOSP

Question

I want to place the navigation panel (on the control panel (on the right), as shown below, using system soft keys such as back, home and menus, not the navigation box!) By editing AOSP.

+-------------------------------------------------+---+ | Status bar (always) | | +-------------------------------------------------+ N | | (Layout with background drawable) | a | | +---------------------------------------------+ | v | | | Title/Action bar (optional) | | | | +---------------------------------------------+ | B | | | Content, vertical extending | | a | | | | | r | | +---------------------------------------------+ | | +-------------------------------------------------+---+ 

So far, I am assuming that RenderSessionImpl.java is an editing file to accomplish this, since it displays a screen layout depending on a given screen orientation value.

I found the following snippet and edited the orientation parameter (HORIZONTAL → VERTICAL) so that it creates a horizontal layout with a navigation bar on the right.

 if (mNavigationBarOrientation == LinearLayout.HORIZONTAL && mNavigationBarSize > 0) { // system bar try { NavigationBar navigationBar = new NavigationBar(context, hardwareConfig.getDensity(), LinearLayout.VERTICAL); // was LinearLayout.HORIZONTAL originallly navigationBar.setLayoutParams( new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, mNavigationBarSize)); topLayout.addView(navigationBar); } catch (XmlPullParserException e) { } } 

The original AOSP code snippets are below.

 /** * Inflates the layout. * <p> * {@link #acquire(long)} must have been called before this. * * @throws IllegalStateException if the current context is different than the one owned by * the scene, or if {@link #init(long)} was not called. */ public Result inflate() { checkLock(); try { SessionParams params = getParams(); HardwareConfig hardwareConfig = params.getHardwareConfig(); BridgeContext context = getContext(); // the view group that receives the window background. ViewGroup backgroundView = null; if (mWindowIsFloating || params.isForceNoDecor()) { backgroundView = mViewRoot = mContentRoot = new FrameLayout(context); } else { if (hasSoftwareButtons() && mNavigationBarOrientation == LinearLayout.VERTICAL) { /* * This is a special case where the navigation bar is on the right. +-------------------------------------------------+---+ | Status bar (always) | | +-------------------------------------------------+ | | (Layout with background drawable) | | | +---------------------------------------------+ | | | | Title/Action bar (optional) | | | | +---------------------------------------------+ | | | | Content, vertical extending | | | | | | | | | +---------------------------------------------+ | | +-------------------------------------------------+---+ So we create a horizontal layout, with the nav bar on the right, and the left part is the normal layout below without the nav bar at the bottom */ LinearLayout topLayout = new LinearLayout(context); mViewRoot = topLayout; topLayout.setOrientation(LinearLayout.HORIZONTAL); try { NavigationBar navigationBar = new NavigationBar(context, hardwareConfig.getDensity(), LinearLayout.VERTICAL); navigationBar.setLayoutParams( new LinearLayout.LayoutParams( mNavigationBarSize, LayoutParams.MATCH_PARENT)); topLayout.addView(navigationBar); } catch (XmlPullParserException e) { } } /* * we're creating the following layout * +-------------------------------------------------+ | Status bar (always) | +-------------------------------------------------+ | (Layout with background drawable) | | +---------------------------------------------+ | | | Title/Action bar (optional) | | | +---------------------------------------------+ | | | Content, vertical extending | | | | | | | +---------------------------------------------+ | +-------------------------------------------------+ | Navigation bar for soft buttons, maybe see above| +-------------------------------------------------+ */ LinearLayout topLayout = new LinearLayout(context); topLayout.setOrientation(LinearLayout.VERTICAL); // if we don't already have a view root this is it if (mViewRoot == null) { mViewRoot = topLayout; } else { LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); layoutParams.weight = 1; topLayout.setLayoutParams(layoutParams); // this is the case of soft buttons + vertical bar. // this top layout is the first layout in the horizontal layout. see above) mViewRoot.addView(topLayout, 0); } if (mStatusBarSize > 0) { // system bar try { StatusBar systemBar = new StatusBar(context, hardwareConfig.getDensity()); systemBar.setLayoutParams( new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, mStatusBarSize)); topLayout.addView(systemBar); } catch (XmlPullParserException e) { } } LinearLayout backgroundLayout = new LinearLayout(context); backgroundView = backgroundLayout; backgroundLayout.setOrientation(LinearLayout.VERTICAL); LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); layoutParams.weight = 1; backgroundLayout.setLayoutParams(layoutParams); topLayout.addView(backgroundLayout); // if the theme says no title/action bar, then the size will be 0 if (mActionBarSize > 0) { try { FakeActionBar actionBar = new FakeActionBar(context, hardwareConfig.getDensity(), params.getAppLabel(), params.getAppIcon()); actionBar.setLayoutParams( new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, mActionBarSize)); backgroundLayout.addView(actionBar); } catch (XmlPullParserException e) { } } else if (mTitleBarSize > 0) { try { TitleBar titleBar = new TitleBar(context, hardwareConfig.getDensity(), params.getAppLabel()); titleBar.setLayoutParams( new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, mTitleBarSize)); backgroundLayout.addView(titleBar); } catch (XmlPullParserException e) { } } // content frame mContentRoot = new FrameLayout(context); layoutParams = new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); layoutParams.weight = 1; mContentRoot.setLayoutParams(layoutParams); backgroundLayout.addView(mContentRoot); if (mNavigationBarOrientation == LinearLayout.HORIZONTAL && mNavigationBarSize > 0) { // system bar try { NavigationBar navigationBar = new NavigationBar(context, hardwareConfig.getDensity(), LinearLayout.HORIZONTAL); navigationBar.setLayoutParams( new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, mNavigationBarSize)); topLayout.addView(navigationBar); } catch (XmlPullParserException e) { } } } // Sets the project callback (custom view loader) to the fragment delegate so that // it can instantiate the custom Fragment. Fragment_Delegate.setProjectCallback(params.getProjectCallback()); View view = mInflater.inflate(mBlockParser, mContentRoot); // done with the parser, pop it. context.popParser(); Fragment_Delegate.setProjectCallback(null); // set the AttachInfo on the root view. AttachInfo_Accessor.setAttachInfo(mViewRoot); // post-inflate process. For now this supports TabHost/TabWidget postInflateProcess(view, params.getProjectCallback()); // get the background drawable if (mWindowBackground != null && backgroundView != null) { Drawable d = ResourceHelper.getDrawable(mWindowBackground, context); backgroundView.setBackground(d); } return SUCCESS.createResult(); } catch (PostInflateException e) { return ERROR_INFLATION.createResult(e.getMessage(), e); } catch (Throwable e) { // get the real cause of the exception. Throwable t = e; while (t.getCause() != null) { t = t.getCause(); } return ERROR_INFLATION.createResult(t.getMessage(), t); } } 

But the screen layout does not show the difference. Any understanding of this? Incorrect file for editing or incorrect logic? I know that this setting is not recommended, but I really need to do this.

Answer 1

The navigation bar can be placed on the right side by editing PhoneWindowManager.java and navigation_bar.xml .

Set mNavigationBarOnBottom to false in PhoneWindowManager, then the following code will be launched.

 // PhoneWindowManager.java // if mNavigationBarOnBottom = false // Landscape screen; nav bar goes to the right int left = displayWidth - mNavigationBarWidthForRotation[displayRotation]; mTmpNavigationFrame.set(left, 0, displayWidth, displayHeight); mStableRight = mStableFullscreenRight = mTmpNavigationFrame.left; if (navVisible) { mNavigationBar.showLw(true); mDockRight = mTmpNavigationFrame.left; mRestrictedScreenWidth = mDockRight - mDockLeft; } else { // We currently want to hide the navigation UI. mNavigationBar.hideLw(true); } if (navVisible && !mNavigationBar.isAnimatingLw()) { // If the nav bar is currently requested to be visible, // and not in the process of animating on or off, then // we can tell the app that it is covered by it. mSystemRight = mTmpNavigationFrame.left; } 

This creates a frame for the navigation bar on the right and not at the bottom, now the layout should be edited to display the system buttons vertically (navigation_bar.xml).

 <!-- navigation bar for sw600dp (small tablets) --> <com.android.systemui.statusbar.phone.NavigationBarView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui" android:layout_height="match_parent" android:layout_width="match_parent" android:background="#FF000000" > <FrameLayout android:id="@+id/rot0" android:layout_height="match_parent" android:layout_width="match_parent" > <LinearLayout android:layout_height="match_parent" android:layout_width="match_parent" android:orientation="vertical" android:clipChildren="false" android:clipToPadding="false" android:id="@+id/nav_buttons" android:animateLayoutChanges="true" > <!-- navigation controls --> ~ <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/back" android:layout_width="match_parent" android:layout_height="128dp" android:src="@drawable/ic_sysbar_back" systemui:keyCode="4" android:layout_weight="0" systemui:glowBackground="@drawable/ic_sysbar_highlight" android:contentDescription="@string/accessibility_back" /> ~ </LinearLayout> </FrameLayout> </com.android.systemui.statusbar.phone.NavigationBarView>