Height adjustment of NavigationBar
I haven't seen how the Navigationbar was created before. I always think it's just a layout layout of the system UI Emmm. I admit defeat ~ ha ha ha, then I want to change his height these two days. The change of O version of Quanzhi A50 is very simple
framework/base/core/res/res/values/dimens.xml
<dimen name="navigation_bar_height">48dp</dimen>
I think it's better to change this one, so I also changed it on MT6739 P, and found it invalid!
oh ~ FACO, it's really bad news. What to do? Trace the code
Drawing of NavigationBar
Here's a brief introduction
frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java After startup, when the start() method is called
createAndAddWindows() will be executed;
public void createAndAddWindows() {
addStatusBarWindow();
}
Then addStatusBarWindow()
private void addStatusBarWindow() {
makeStatusBarView();
mStatusBarWindowManager = Dependency.get(StatusBarWindowManager.class);
mRemoteInputManager.setUpWithPresenter(this, mEntryManager, this,
new RemoteInputController.Delegate() {
public void setRemoteInputActive(NotificationData.Entry entry,
boolean remoteInputActive) {
mHeadsUpManager.setRemoteInputActive(entry, remoteInputActive);
entry.row.notifyHeightChanged(true /* needsAnimation */);
updateFooter();
}
public void lockScrollTo(NotificationData.Entry entry) {
mStackScroller.lockScrollTo(entry.row);
}
public void requestDisallowLongPressAndDismiss() {
mStackScroller.requestDisallowLongPress();
mStackScroller.requestDisallowDismiss();
}
});
mRemoteInputManager.getController().addCallback(mStatusBarWindowManager);
mStatusBarWindowManager.add(mStatusBarWindow, getStatusBarHeight());
}
The first way here is to make statusbarview (), look like, let's go
protected void makeStatusBarView() {
.....He's too many. Let's simplify it
try {
boolean showNav = mWindowManagerService.hasNavigationBar();
if (DEBUG) Log.v(TAG, "hasNavigationBar=" + showNav);
if (showNav) {
createNavigationBar();
}
} catch (RemoteException ex) {
// no window manager? good luck with that
}
.....
}
The next step is
createNavigationBar()
protected void createNavigationBar() {
mNavigationBarView = NavigationBarFragment.create(mContext, (tag, fragment) -> {
mNavigationBar = (NavigationBarFragment) fragment;
if (mLightBarController != null) {
mNavigationBar.setLightBarController(mLightBarController);
}
mNavigationBar.setCurrentSysuiVisibility(mSystemUiVisibility);
});
}
N avigationBarFragment.java create() of
//Pay attention to several attributes here. One is that the width and height of layout attributes are LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT,
//In addition, this is a window form. The type added is TYPE_NAVIGATION_BAR. . . .
public static View create(Context context, FragmentListener listener) {
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.TYPE_NAVIGATION_BAR,
WindowManager.LayoutParams.FLAG_TOUCHABLE_WHEN_WAKING
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
| WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
| WindowManager.LayoutParams.FLAG_SPLIT_TOUCH
| WindowManager.LayoutParams.FLAG_SLIPPERY,
PixelFormat.TRANSLUCENT);
lp.token = new Binder();
lp.setTitle("NavigationBar");
lp.accessibilityTitle = context.getString(R.string.nav_bar);
lp.windowAnimations = 0;
View navigationBarView = LayoutInflater.from(context).inflate(
R.layout.navigation_bar_window, null);
if (DEBUG) Log.v(TAG, "addNavigationBar: about to add " + navigationBarView);
if (navigationBarView == null) return null;
context.getSystemService(WindowManager.class).addView(navigationBarView, lp);
FragmentHostManager fragmentHost = FragmentHostManager.get(navigationBarView);
NavigationBarFragment fragment = new NavigationBarFragment();
fragmentHost.getFragmentManager().beginTransaction()
.replace(R.id.navigation_bar_frame, fragment, TAG)
.commit();
fragmentHost.addTagListener(TAG, listener);
return navigationBarView;
}
So, since it's a window, let's find it, and then PhoneWindowManager.java Found in
@Override
public int prepareAddWindowLw(WindowState win, WindowManager.LayoutParams attrs) {
if ((attrs.privateFlags & PRIVATE_FLAG_IS_SCREEN_DECOR) != 0) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.STATUS_BAR_SERVICE,
"PhoneWindowManager");
mScreenDecorWindows.add(win);
}
switch (attrs.type) {
case TYPE_STATUS_BAR:
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.STATUS_BAR_SERVICE,
"PhoneWindowManager");
if (mStatusBar != null) {
if (mStatusBar.isAlive()) {
return WindowManagerGlobal.ADD_MULTIPLE_SINGLETON;
}
}
mStatusBar = win;
mStatusBarController.setWindow(win);
setKeyguardOccludedLw(mKeyguardOccluded, true /* force */);
break;
case TYPE_NAVIGATION_BAR://If the window added here is navigationbar
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.STATUS_BAR_SERVICE,
"PhoneWindowManager");
if (mNavigationBar != null) {
if (mNavigationBar.isAlive()) {
return WindowManagerGlobal.ADD_MULTIPLE_SINGLETON;
}
}
mNavigationBar = win;//Let's pay attention to this
mNavigationBarController.setWindow(win);
mNavigationBarController.setOnBarVisibilityChangedListener(
mNavBarVisibilityListener, true);
if (DEBUG_LAYOUT) Slog.i(TAG, "NAVIGATION BAR: " + mNavigationBar);
break;
case TYPE_NAVIGATION_BAR_PANEL:
case TYPE_STATUS_BAR_PANEL:
case TYPE_STATUS_BAR_SUB_PANEL:
case TYPE_VOICE_INTERACTION_STARTING:
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.STATUS_BAR_SERVICE,
"PhoneWindowManager");
break;
}
return ADD_OKAY;
}
Mnaviationbar is defined as WindowState
The name of the mnaviationbarcontroller looks like the controller of the navigationbar
WindowState mNavigationBar = null;
private final BarController mNavigationBarController = new BarController("NavigationBar",
View.NAVIGATION_BAR_TRANSIENT,
View.NAVIGATION_BAR_UNHIDE,
View.NAVIGATION_BAR_TRANSLUCENT,
StatusBarManager.WINDOW_NAVIGATION_BAR,
FLAG_TRANSLUCENT_NAVIGATION,
View.NAVIGATION_BAR_TRANSPARENT);
But the properties I set before are LayoutParams.MATCH_ The height of parent is also LayoutParams.MATCH_PARENT, so the height of this window should have been reserved. addwindow is just filled in this way
mNavigationBarController.setWindow(win);
I'm looking for related definitions.
Find the function layoutNavigationBar() and start using it when beginLayoutLw(). If you want to display the navigationbar, you can use the layoutNavigationBar() after some drawing
private boolean layoutNavigationBar(DisplayFrames displayFrames, int uiMode, Rect dcf,
boolean navVisible, boolean navTranslucent, boolean navAllowedHidden,
boolean statusBarExpandedNotKeyguard) {
if (mNavigationBar == null) {
return false;
}
boolean transientNavBarShowing = mNavigationBarController.isTransientShowing();
// Force the navigation bar to its appropriate place and size. We need to do this directly,
// instead of relying on it to bubble up from the nav bar, because this needs to change
// atomically with screen rotations.
final int rotation = displayFrames.mRotation;
final int displayHeight = displayFrames.mDisplayHeight;
final int displayWidth = displayFrames.mDisplayWidth;
final Rect dockFrame = displayFrames.mDock;
mNavigationBarPosition = navigationBarPosition(displayWidth, displayHeight, rotation);
final Rect cutoutSafeUnrestricted = mTmpRect;
cutoutSafeUnrestricted.set(displayFrames.mUnrestricted);
cutoutSafeUnrestricted.intersectUnchecked(displayFrames.mDisplayCutoutSafe);
if (mNavigationBarPosition == NAV_BAR_BOTTOM) {//My navigationbar is at the bottom
// It's a system nav bar or a portrait screen; nav bar goes on bottom.
final int top = cutoutSafeUnrestricted.bottom
- getNavigationBarHeight(rotation, uiMode);//Find out what not getNavigationbarHeight get navigation bar height
mTmpNavigationFrame.set(0, top, displayWidth, displayFrames.mUnrestricted.bottom);
displayFrames.mStable.bottom = displayFrames.mStableFullscreen.bottom = top;
if (transientNavBarShowing) {
mNavigationBarController.setBarShowingLw(true);
} else if (navVisible) {
mNavigationBarController.setBarShowingLw(true);
dockFrame.bottom = displayFrames.mRestricted.bottom
= displayFrames.mRestrictedOverscan.bottom = top;
} else {
// We currently want to hide the navigation UI - unless we expanded the status bar.
mNavigationBarController.setBarShowingLw(statusBarExpandedNotKeyguard);
}
if (navVisible && !navTranslucent && !navAllowedHidden
&& !mNavigationBar.isAnimatingLw()
&& !mNavigationBarController.wasRecentlyTranslucent()) {
// If the opaque 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.
displayFrames.mSystem.bottom = top;
}
} else if (mNavigationBarPosition == NAV_BAR_RIGHT) {
// Landscape screen; nav bar goes to the right.
final int left = cutoutSafeUnrestricted.right
- getNavigationBarWidth(rotation, uiMode);
mTmpNavigationFrame.set(left, 0, displayFrames.mUnrestricted.right, displayHeight);
displayFrames.mStable.right = displayFrames.mStableFullscreen.right = left;
if (transientNavBarShowing) {
mNavigationBarController.setBarShowingLw(true);
} else if (navVisible) {
mNavigationBarController.setBarShowingLw(true);
dockFrame.right = displayFrames.mRestricted.right
= displayFrames.mRestrictedOverscan.right = left;
} else {
// We currently want to hide the navigation UI - unless we expanded the status bar.
mNavigationBarController.setBarShowingLw(statusBarExpandedNotKeyguard);
}
if (navVisible && !navTranslucent && !navAllowedHidden
&& !mNavigationBar.isAnimatingLw()
&& !mNavigationBarController.wasRecentlyTranslucent()) {
// 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.
displayFrames.mSystem.right = left;
}
} else if (mNavigationBarPosition == NAV_BAR_LEFT) {
// Seascape screen; nav bar goes to the left.
final int right = cutoutSafeUnrestricted.left
+ getNavigationBarWidth(rotation, uiMode);
mTmpNavigationFrame.set(displayFrames.mUnrestricted.left, 0, right, displayHeight);
displayFrames.mStable.left = displayFrames.mStableFullscreen.left = right;
if (transientNavBarShowing) {
mNavigationBarController.setBarShowingLw(true);
} else if (navVisible) {
mNavigationBarController.setBarShowingLw(true);
dockFrame.left = displayFrames.mRestricted.left =
displayFrames.mRestrictedOverscan.left = right;
} else {
// We currently want to hide the navigation UI - unless we expanded the status bar.
mNavigationBarController.setBarShowingLw(statusBarExpandedNotKeyguard);
}
if (navVisible && !navTranslucent && !navAllowedHidden
&& !mNavigationBar.isAnimatingLw()
&& !mNavigationBarController.wasRecentlyTranslucent()) {
// 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.
displayFrames.mSystem.left = right;
}
}
// Make sure the content and current rectangles are updated to account for the restrictions
// from the navigation bar.
displayFrames.mCurrent.set(dockFrame);
displayFrames.mVoiceContent.set(dockFrame);
displayFrames.mContent.set(dockFrame);
mStatusBarLayer = mNavigationBar.getSurfaceLayer();
// And calculate the final frame
mNavigationBar.computeFrameLw(mTmpNavigationFrame, mTmpNavigationFrame,
mTmpNavigationFrame, displayFrames.mDisplayCutoutSafe, mTmpNavigationFrame, dcf,
mTmpNavigationFrame, displayFrames.mDisplayCutoutSafe,
displayFrames.mDisplayCutout, false /* parentFrameWasClippedByDisplayCutout */);
mNavigationBarController.setContentFrame(mNavigationBar.getContentFrameLw()); //Here setcontentframe
if (DEBUG_LAYOUT) Slog.i(TAG, "mNavigationBar frame: " + mTmpNavigationFrame);
return mNavigationBarController.checkHiddenLw();
}
getNavigationBarHeight()
private int getNavigationBarHeight(int rotation, int uiMode) {
if (ALTERNATE_CAR_MODE_NAV_SIZE && (uiMode & UI_MODE_TYPE_MASK) == UI_MODE_TYPE_CAR) {
return mNavigationBarHeightForRotationInCarMode[rotation];
} else {
return mNavigationBarHeightForRotationDefault[rotation];//Is to take the value of an array
}
}
Defined here. Yeah, it's here that limits his altitude navigation_bar_height, so which match in the system UI_ Parent it's no use changing the layout
// Height of the navigation bar when presented horizontally at bottom
mNavigationBarHeightForRotationDefault[mPortraitRotation] =
mNavigationBarHeightForRotationDefault[mUpsideDownRotation] =
res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height);
But this thing I found is 80. Actually, I didn't find a place to define navigation for him_ bar_ height.
I also changed framework / base / core / RES / RES / values in overlay/ dimens.xml It's useless to change them. If you can't help it, you have to force it
mNavigationBarHeightForRotationDefault[mUpsideDownRotation] =
res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height);
It's worth it. okay. The description may not be clear, but to summarize, the height of the navigation bar is not from the layout definition of the system UI. It's phone window manager. It's already divided for him. We need to change the height and change here