最近有个项目，客户要求在底部导航栏中添加一个可以隐藏整个导航栏的功能按钮，效果如下图：
具体方法如下：
1. 在frameworks/base做如下修改：
diff --git a/packages/SystemUI/res/layout/navigation_bar.xml b/packages/SystemUI/res/layout/navigation_bar.xml
old mode 100644
new mode 100755
index 5f59e781ef5e..538a0119cd09
--- a/packages/SystemUI/res/layout/navigation_bar.xml
+++ b/packages/SystemUI/res/layout/navigation_bar.xml
@@ -33,4 +33,12 @@
android:clipChildren="false"
android:clipToPadding="false" />
+ <ImageView
+ android:layout_width="30dp"
+ android:layout_height="30dp"
+ android:id="@+id/navigation_hide_iv"
+ android:src="@drawable/ic_sysbar_hide"
+ android:layout_gravity="start|center_vertical"
+ android:layout_marginStart="@dimen/navigation_hide_button_start_margin" />
+
</com.android.systemui.navigationbar.NavigationBarView>
diff --git a/packages/SystemUI/res/values-land/dimens.xml b/packages/SystemUI/res/values-land/dimens.xml
old mode 100644
new mode 100755
index e09f7a6f0b57..6b19713923d6
--- a/packages/SystemUI/res/values-land/dimens.xml
+++ b/packages/SystemUI/res/values-land/dimens.xml
@@ -60,4 +60,6 @@
<dimen name="qs_panel_padding_top">@dimen/qqs_layout_margin_top</dimen>
<dimen name="qs_panel_padding_top_combined_headers">@dimen/qs_panel_padding_top</dimen>
+
+ <dimen name="navigation_hide_button_start_margin">40dp</dimen>
</resources>
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
old mode 100644
new mode 100755
index 6f1a13de60ed..40659c8542b9
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -1567,4 +1567,6 @@
<dimen name="dream_overlay_status_bar_ambient_text_shadow_dx">0.5dp</dimen>
<dimen name="dream_overlay_status_bar_ambient_text_shadow_dy">0.5dp</dimen>
<dimen name="dream_overlay_status_bar_ambient_text_shadow_radius">2dp</dimen>
+
+ <dimen name="navigation_hide_button_start_margin">24dp</dimen>
</resources>
diff --git a/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarController.java b/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarController.java
old mode 100644
new mode 100755
index 3789cbb1fb65..53d3fa4855aa
--- a/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarController.java
+++ b/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarController.java
@@ -25,6 +25,7 @@ import static com.android.systemui.shared.recents.utilities.Utilities.isTablet;
import android.content.ContentResolver;
import android.content.Context;
+import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.hardware.display.DisplayManager;
@@ -47,6 +48,7 @@ import androidx.annotation.Nullable;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.statusbar.RegisterStatusBarResult;
import com.android.settingslib.applications.InterestingConfigChanges;
+import com.android.systemui.R;
import com.android.systemui.Dumpable;
import com.android.systemui.dagger.SysUISingleton;
import com.android.systemui.dagger.qualifiers.Main;
@@ -63,6 +65,7 @@ import com.android.systemui.statusbar.phone.BarTransitions.TransitionMode;
import com.android.systemui.statusbar.phone.LightBarController;
import com.android.systemui.statusbar.phone.StatusBarKeyguardViewManager;
import com.android.systemui.statusbar.policy.ConfigurationController;
+import com.android.systemui.statusbar.phone.CentralSurfacesImpl;
import com.android.wm.shell.back.BackAnimation;
import com.android.wm.shell.pip.Pip;
@@ -294,6 +297,8 @@ public class NavigationBarController implements
}
}
+ private int displayId;
+
/**
* Adds a navigation bar on default display or an external display if the display supports
* system decorations.
@@ -306,7 +311,7 @@ public class NavigationBarController implements
return;
}
- final int displayId = display.getDisplayId();
+ displayId = display.getDisplayId();
final boolean isOnDefaultDisplay = displayId == DEFAULT_DISPLAY;
// We may show TaskBar on the default display for large screen device. Don't need to create
@@ -343,6 +348,7 @@ public class NavigationBarController implements
result.mImeWindowVis, result.mImeBackDisposition,
result.mShowImeSwitcher);
}
+ context.sendBroadcast(new Intent(CentralSurfacesImpl.ACTION_HIDE_NAVIGATIONBAR));
}
@Override
@@ -352,6 +358,13 @@ public class NavigationBarController implements
});
}
+ //edit by chain
+ public void initHideButton() {
+ NavigationBarView navigationBarView = getNavigationBarView(displayId);
+ View navigationHideIv = navigationBarView.findViewById(R.id.navigation_hide_iv);
+ navigationHideIv.setOnClickListener(v -> removeNavigationBar(displayId));
+ }
+
void removeNavigationBar(int displayId) {
NavigationBar navBar = mNavigationBars.get(displayId);
if (navBar != null) {
@@ -368,6 +381,11 @@ public class NavigationBarController implements
}
}
+ public boolean canShowNavigationBar() {
+ NavigationBar navBar = mNavigationBars.get(displayId);
+ return navBar == null;
+ }
+
/** @see NavigationBar#finishBarAnimations() */
public void finishBarAnimations(int displayId) {
NavigationBar navBar = mNavigationBars.get(displayId);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java
old mode 100644
new mode 100755
index 0b63bbfec877..f78b86556d28
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java
@@ -879,6 +879,8 @@ public class CentralSurfacesImpl extends CoreStartable implements
wiredChargingRippleController.registerCallbacks();
}
+ private RegisterStatusBarResult mBarRresult;
+
@Override
public void start() {
mScreenLifecycle.addObserver(mScreenObserver);
@@ -917,14 +919,14 @@ public class CentralSurfacesImpl extends CoreStartable implements
mKeyguardManager = (KeyguardManager) mContext.getSystemService(Context.KEYGUARD_SERVICE);
mWallpaperSupported = mWallpaperManager.isWallpaperSupported();
- RegisterStatusBarResult result = null;
+ //RegisterStatusBarResult result = null;
try {
- result = mBarService.registerStatusBar(mCommandQueue);
+ mBarRresult = mBarService.registerStatusBar(mCommandQueue);
} catch (RemoteException ex) {
ex.rethrowFromSystemServer();
}
- createAndAddWindows(result);
+ createAndAddWindows(mBarRresult);
if (mWallpaperSupported) {
// Make sure we always have the most current wallpaper info.
@@ -939,30 +941,30 @@ public class CentralSurfacesImpl extends CoreStartable implements
// Set up the initial notification state. This needs to happen before CommandQueue.disable()
setUpPresenter();
- if (containsType(result.mTransientBarTypes, ITYPE_STATUS_BAR)) {
+ if (containsType(mBarRresult.mTransientBarTypes, ITYPE_STATUS_BAR)) {
showTransientUnchecked();
}
- mCommandQueueCallbacks.onSystemBarAttributesChanged(mDisplayId, result.mAppearance,
- result.mAppearanceRegions, result.mNavbarColorManagedByIme, result.mBehavior,
- result.mRequestedVisibilities, result.mPackageName, result.mLetterboxDetails);
+ mCommandQueueCallbacks.onSystemBarAttributesChanged(mDisplayId, mBarRresult.mAppearance,
+ mBarRresult.mAppearanceRegions, mBarRresult.mNavbarColorManagedByIme, mBarRresult.mBehavior,
+ mBarRresult.mRequestedVisibilities, mBarRresult.mPackageName, mBarRresult.mLetterboxDetails);
// StatusBarManagerService has a back up of IME token and it's restored here.
- mCommandQueueCallbacks.setImeWindowStatus(mDisplayId, result.mImeToken,
- result.mImeWindowVis, result.mImeBackDisposition, result.mShowImeSwitcher);
+ mCommandQueueCallbacks.setImeWindowStatus(mDisplayId, mBarRresult.mImeToken,
+ mBarRresult.mImeWindowVis, mBarRresult.mImeBackDisposition, mBarRresult.mShowImeSwitcher);
// Set up the initial icon state
- int numIcons = result.mIcons.size();
+ int numIcons = mBarRresult.mIcons.size();
for (int i = 0; i < numIcons; i++) {
- mCommandQueue.setIcon(result.mIcons.keyAt(i), result.mIcons.valueAt(i));
+ mCommandQueue.setIcon(mBarRresult.mIcons.keyAt(i), mBarRresult.mIcons.valueAt(i));
}
if (DEBUG) {
Log.d(TAG, String.format(
"init: icons=%d disabled=0x%08x lights=0x%08x imeButton=0x%08x",
numIcons,
- result.mDisabledFlags1,
- result.mAppearance,
- result.mImeWindowVis));
+ mBarRresult.mDisabledFlags1,
+ mBarRresult.mAppearance,
+ mBarRresult.mImeWindowVis));
}
IntentFilter internalFilter = new IntentFilter();
@@ -1028,8 +1030,8 @@ public class CentralSurfacesImpl extends CoreStartable implements
mAccessibilityFloatingMenuController.init();
// set the initial view visibility
- int disabledFlags1 = result.mDisabledFlags1;
- int disabledFlags2 = result.mDisabledFlags2;
+ int disabledFlags1 = mBarRresult.mDisabledFlags1;
+ int disabledFlags2 = mBarRresult.mDisabledFlags2;
mInitController.addPostInitTask(
() -> setUpDisableFlags(disabledFlags1, disabledFlags2));
@@ -1398,11 +1400,15 @@ public class CentralSurfacesImpl extends CoreStartable implements
return mLifecycle;
}
+ public static final String ACTION_HIDE_NAVIGATIONBAR = "action_hide_navigationbar";
+ public static final String ACTION_SHOW_NAVIGATIONBAR = "action_show_navigationbar";
@VisibleForTesting
protected void registerBroadcastReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
filter.addAction(Intent.ACTION_SCREEN_OFF);
+ filter.addAction(ACTION_HIDE_NAVIGATIONBAR);
+ filter.addAction(ACTION_SHOW_NAVIGATIONBAR);
mBroadcastDispatcher.registerReceiver(mBroadcastReceiver, filter, null, UserHandle.ALL);
}
@@ -2660,6 +2666,13 @@ public class CentralSurfacesImpl extends CoreStartable implements
}
finishBarAnimations();
resetUserExpandedStates();
+ }else if (ACTION_HIDE_NAVIGATIONBAR.equals(action)){
+ mNavigationBarController.initHideButton();
+ }else if (ACTION_SHOW_NAVIGATIONBAR.equals(action)){
+ //Log.d("wzh", "mBroadcastReceiver.action="+action);
+ if (mNavigationBarController.canShowNavigationBar()){
+ createNavigationBar(mBarRresult);
+ }
}
Trace.endSection();
}
diff --git a/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java b/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java
old mode 100644
new mode 100755
index 658f4efbdb2f..c095df9b0adb
--- a/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java
+++ b/services/core/java/com/android/server/wm/SystemGesturesPointerEventListener.java
@@ -23,12 +23,14 @@ import static android.view.DisplayCutout.BOUNDS_POSITION_TOP;
import android.annotation.NonNull;
import android.content.Context;
+import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Rect;
import android.graphics.Region;
import android.hardware.display.DisplayManagerGlobal;
import android.os.Handler;
import android.os.SystemClock;
+import android.util.Log;
import android.util.Slog;
import android.view.Display;
import android.view.DisplayCutout;
@@ -194,12 +196,15 @@ class SystemGesturesPointerEventListener implements PointerEventListener {
if (mSwipeFireable) {
final int swipe = detectSwipe(event);
mSwipeFireable = swipe == SWIPE_NONE;
+ //Log.d("wzh", "onPointerEvent().MotionEvent.ACTION_MOVE.swipe="+swipe);
if (swipe == SWIPE_FROM_TOP) {
if (DEBUG) Slog.d(TAG, "Firing onSwipeFromTop");
mCallbacks.onSwipeFromTop();
+ mContext.sendBroadcast(new Intent("action_show_navigationbar"));
} else if (swipe == SWIPE_FROM_BOTTOM) {
if (DEBUG) Slog.d(TAG, "Firing onSwipeFromBottom");
mCallbacks.onSwipeFromBottom();
+ mContext.sendBroadcast(new Intent("action_show_navigationbar"));
} else if (swipe == SWIPE_FROM_RIGHT) {
if (DEBUG) Slog.d(TAG, "Firing onSwipeFromRight");
mCallbacks.onSwipeFromRight();
2. 上面修改中有一行代码android:src="@drawable/ic_sysbar_hide"引用了一个ic_sysbar_hide.xml文件，该文件内容如下：其实就是那个隐藏按钮的矢量图代码
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="18dp"
android:height="18dp"
android:viewportWidth="35"
android:viewportHeight="35">
<path
android:fillColor="#66cccccc"
android:pathData="M21.314,25.837l9.898-9.9c0.782-0.782,2.049-0.782,2.829,0c0.78,0.781,0.781,2.049,0,2.831L22.73,30.079
c-0.001,0.002-0.001,0.002-0.001,0.002c-0.39,0.391-0.902,0.586-1.415,0.586s-1.024-0.195-1.415-0.586L8.585,18.768
c-0.782-0.781-0.779-2.049,0-2.831c0.781-0.782,2.049-0.782,2.831,0L21.314,25.837z"/>
</vector>
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