RK3568 Android12动态控制SystemUI状态栏和导航栏

状态栏和导航栏"/>

RK3568 Android12动态控制SystemUI状态栏和导航栏

RK3568 Android12动态控制SystemUI状态栏和导航栏-frameworks/base【一】

要实现一个需求，在Android12上实现动态控制状态栏和导航栏的显示及隐藏，基本思路：在frameworks/base 中增加想要的显示控制，在Settings增加开关按钮进行功能出发。本文主要讲解frameworks/base 的改动思路。

下面是实现的具体方法和步骤

1. 增加系统属性，用于保存显示状态：true 表示显示，false表示隐藏
   可在编译固件时，在mk文件中增加这两个属性

   persist.sys.statusbar.enable=true
   persist.sys.navigationbar.enable=true
   

2. 用于控制显示、隐藏的广播

   com.systemui.statusbar.show   ----显示状态栏
   com.systemui.statusbar.hide   ----隐藏状态栏
   com.systemui.navigationbar.show ----显示导航栏
   com.systemui.navigationbar.show ----隐藏导航栏
   

3. 在frameworks/base/packages/SystemUI 增加功能代码
   修改代码涉及的文件如下：

	AndroidManifest.xmlsrc/com/android/systemui/navigationbar/NavigationBarController.javasrc/com/android/systemui/statusbar/phone/StatusBar.javasrc/com/android/systemui/statusbar/window/StatusBarWindowController.java

（1）AndroidManifest.xml 增加广播的应用

+    <protected-broadcast android:name="com.systemui.statusbar.show" />
+    <protected-broadcast android:name="com.systemui.statusbar.hide" />
+
+    <!-- For NavigationBar show or not -->
+    <protected-broadcast android:name="com.systemui.navigationbar.show" />
+    <protected-broadcast android:name="com.systemui.navigationbar.hide" />

（2）statusbar/phone/StatusBar.java 初始化时根据系统属性显示或者隐藏状态栏和导航栏，监听广播显示或隐藏状态栏和导航栏

@@ -313,6 +313,12 @@ public class StatusBar extends SystemUI implementspublic static final int[] CAMERA_LAUNCH_GESTURE_VIBRATION_AMPLITUDES =new int[]{39, 82, 139, 213, 0, 127};+    private static final String ACTION_HIDE_STATUS_BAR = "com.systemui.statusbar.hide";
+    private static final String ACTION_SHOW_STATUS_BAR = "com.systemui.statusbar.show";
+    private static final String ACTION_HIDE_NAVIGATION_BAR = "com.systemui.navigationbar.hide";
+    private static final String ACTION_SHOW_NAVIGATION_BAR = "com.systemui.navigationbar.show";
+    private static final String SYS_PROPERTY_STATUS_BAR = "persist.sys.statusbar.enable";
+    private static final String SYS_PROPERTY_NAVIGATION_BAR = "persist.sys.navigationbar.enable";
+ 
@@ -966,6 +972,9 @@ public class StatusBar extends SystemUI implements}createAndAddWindows(result);
+        if (!SystemProperties.getBoolean(SYS_PROPERTY_STATUS_BAR, false)) {
+            mStatusBarWindowController.setBarVisibility(View.GONE);
+        }if (mWallpaperSupported) {// Make sure we always have the most current wallpaper info.
@@ -1178,7 +1187,9 @@ public class StatusBar extends SystemUI implementsmHeadsUpManager.addListener(mVisualStabilityManager);mNotificationPanelViewController.setHeadsUpManager(mHeadsUpManager);-        createNavigationBar(result);
+        if (SystemProperties.getBoolean(SYS_PROPERTY_NAVIGATION_BAR, false)) {
+            createNavigationBar(result);
+        }if (ENABLE_LOCKSCREEN_WALLPAPER && mWallpaperSupported) {mLockscreenWallpaper = mLockscreenWallpaperLazy.get();
@@ -1406,6 +1417,10 @@ public class StatusBar extends SystemUI implementsfilter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);filter.addAction(Intent.ACTION_SCREEN_OFF);filter.addAction(DevicePolicyManager.ACTION_SHOW_DEVICE_MONITORING_DIALOG);
+        filter.addAction(ACTION_HIDE_NAVIGATION_BAR);
+        filter.addAction(ACTION_SHOW_NAVIGATION_BAR);
+        filter.addAction(ACTION_HIDE_STATUS_BAR);
+        filter.addAction(ACTION_SHOW_STATUS_BAR);mBroadcastDispatcher.registerReceiver(mBroadcastReceiver, filter, null, UserHandle.ALL);}@@ -2666,6 +2681,18 @@ public class StatusBar extends SystemUI implements}else if (DevicePolicyManager.ACTION_SHOW_DEVICE_MONITORING_DIALOG.equals(action)) {mQSPanelController.showDeviceMonitoringDialog();
+            } else if (ACTION_HIDE_NAVIGATION_BAR.equals(action)) {
+                mNavigationBarController.removeNavigationBars();
+                SystemProperties.set(SYS_PROPERTY_NAVIGATION_BAR, "false");
+            } else if (ACTION_SHOW_NAVIGATION_BAR.equals(action)) {
+                createNavigationBar(null);
+                SystemProperties.set(SYS_PROPERTY_NAVIGATION_BAR, "true");
+            } else if (ACTION_HIDE_STATUS_BAR.equals(action)) {
+                mStatusBarWindowController.setBarVisibility(View.GONE);
+                SystemProperties.set(SYS_PROPERTY_STATUS_BAR, "false");
+            } else if (ACTION_SHOW_STATUS_BAR.equals(action)) {
+                mStatusBarWindowController.setBarVisibility(View.VISIBLE);
+                SystemProperties.set(SYS_PROPERTY_STATUS_BAR, "true");}Trace.endSection();}

（3）navigationbar/NavigationBarController.java 增加导航栏的销毁接口

@@ -241,6 +241,13 @@ public class NavigationBarController implements}}+    public void removeNavigationBars() {
+        Display[] displays = mDisplayManager.getDisplays();
+        for (Display display : displays) {
+            removeNavigationBar(display.getDisplayId());
+        }
+    }

（4）statusbar/window/StatusBarWindowController.java 增加状态的显示控制接口

@@ -315,4 +315,8 @@ public class StatusBarWindowController {mLpChanged.privateFlags &= ~PRIVATE_FLAG_FORCE_SHOW_STATUS_BAR;}}
+
+    public void setBarVisibility(int visibility) {
+        mStatusBarWindowView.setVisibility(visibility);
+    }

4. 测试
   在Settings还没添加功能之前，可通过发生广播命令进行测试：命令如下

   			am broadcast -a com.systemui.statusbar.show   #状态显示am broadcast -a com.systemui.statusbar.hide    #状态栏隐藏am broadcast -a com.systemui.navigationbar.show #导航栏显示am broadcast -a com.systemui.navigationbar.hide  #导航栏隐藏