Android Navigation Bar on side by editing AOSP

Question

I want to put the Navigation Bar (has system soft keys like back, home and menu. not Navigation Drawer!) on the (right) side, like below, by editing AOSP.

+-----         


        

Answer 1

Navigation Bar can be placed on right side by editing PhoneWindowManager.java and navigation_bar.xml.

Set mNavigationBarOnBottom to false in PhoneWindowManager then the following code will run.

// 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 the frame for navigation bar on right instead of bottom, now layout needs to be edited to display system buttons vertically(navigation_bar.xml).

    
        
            
            
            ~
            
            ~