RK3566&RK3568安卓11隐藏导航栏带接口
关于Android系统的导航栏，不同的客户有不同的需求: 有些客户需要永久隐藏导航栏，有些客户需要在设置显示中添加按钮可自行选择是否显示和隐藏，有些客户需要给出调用接口供APP去调用设置等;
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前言
关于Android系统的导航栏，不同的客户有不同的需求: 有些客户需要永久隐藏导航栏，有些客户需要在设置显示中添加按钮可自行选择是否显示和隐藏，有些客户需要给出调用接口供APP去调用设置等;
一、创建全局变量
1、创建全局变量保存导航栏状态，是为了系统级应用和整个框架层都能获取到该变量值，该变量值在掉电或者重启都不会丢失(除了恢复出厂设置Q 或者重刷系统固件之外) ;
2、创建全局变量
配置路径: frameworks/base/core/java/android/provider/Settings.java
定义了一个SYSTEM_HIDE_NAVIGATION全局变量: SYSTEM_HIDE_NAVIGATION =“hide_navigation”
这个是需要放在 public static final class System extends NameValueTable {
里面的哦
/**
* add by LQX at 20230818
*/
public static final String SYSTEM_HIDE_NAVIGATION = "hide_navigation";
3、定义全局变量的默认值
配置路径: frameworks/base/packages/SettingsProvider/res/values/defaults.xml
设置引用的名称格式为: def_ + SYSTEM_HIDE_NAVIGATION的字符值 = def_hide_navigation,值为bool类型;
值为true: 隐藏导航栏;
值为false: 显示导航栏;
<!-- add by LQX -->
<bool name="def_hide_navigation">true</bool>
<!-- end, add by LQX -->
二、设置应用添加隐藏导航栏按钮
1、在 设置->显示 里添加导航栏按钮;
2、按钮标题为“隐藏导航栏”
这里以英文和中文字体为例，其他字体需要的话也同理添加;
英文字体(系统为英文语言时显示) : packages/apps/Settings/res/values/strings.xml
<!-- add by LQX-->
<string name="hide_navigation">Hide Navigation</string>
<!-- end, add by LQX-->
中文字体: packages/apps/Settings/res/values-zh-rCN/strings.xml
<!-- add by LQX-->
<string name="hide_navigation">隐藏导航栏</string>
<!-- end, add by LQX-->
3、添加按钮布局
(1) 选择在 设置->显示 里面添加
对应的布局文件: packages/apps/Settings/res/xml/display_settings.xml
对应的按钮类型，这里选择为: SwitchPreference
(2)在对应的位置添加按钮控件
这里选择是在“屏幕超时”后面添加:
android:key=“hide navigation” ===>按钮控制健值
android:title=“@string/hide navigation”= = >标题，使用上面2中配置好的
<!-- add by LQX-->
<SwitchPreference
android:key="hide_navigation"
android:title="@string/hide_navigation" />
<!-- end,add by LQX-->
4、这样按钮就能在 设置->显示 中，显示出来了
但此时点击按钮是没有作用的，对应的按钮功能还没有添加进去:
三、添加按钮功能
1、添加功能代码
创建一个java文件:
目录路径: packages/apps/Settings/src/com/android/settings/display/
创建一个java文件: HideNavigationPreferenceController.java
功能代码如下:
package com.android.settings.display;
import android.content.Context;
import android.provider.Settings;
import androidx.preference.SwitchPreference;
import androidx.preference.Preference;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.core.AbstractPreferenceController;
import android.content.Intent;
import android.util.Log;
public class HideNavigationPreferenceController extends AbstractPreferenceController implements
PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
private static final String TAG = "HideNavigationPreferenceController";
private static final boolean DEBUG = true;
private static final String KEY_HIDE_NAVIGATION = "hide_navigation"; //按钮键值
public static final String ACTION_HIDE_NAVIGATION = "action.ACTION_HIDE_NAVIGATION"; //广播，用于实现导航栏隐藏和显示功能；
public HideNavigationPreferenceController(Context context) {
super(context);
}
@Override
public String getPreferenceKey() {
return KEY_HIDE_NAVIGATION;
}
@Override
public boolean isAvailable() {
return true;
}
@Override
public void updateState(Preference preference) { //当进入设置->显示界面时，获取导航栏状态，然后更新按钮状态
int value = Settings.System.getInt(
mContext.getContentResolver(), Settings.System.SYSTEM_HIDE_NAVIGATION, 0);
((SwitchPreference) preference).setChecked(value != 0);
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) { //点击按钮时，响应函数
boolean value = (Boolean) newValue;
if(DEBUG) {
Log.d(TAG, "key value " + value);
}
Settings.System.putInt(
mContext.getContentResolver(), Settings.System.SYSTEM_HIDE_NAVIGATION, value ? 1 : 0); //保存设置的导航栏状态；
Intent intent = new Intent(ACTION_HIDE_NAVIGATION); //发送广播，实现导航栏隐藏和显示功能
mContext.sendBroadcast(intent);
return true;
}
}
2、把该class类添加到Settings调用list中
文件路径: packages/apps/Settings/src/com/android/settings/DisplaySettings.java
import com.android.settings.display.HideNavigationPreferenceController; //add by LQX
@@ -93,6 +94,7 @0 public class DisplaySettings extends DashboardFragment {
controllers.add(new ThemePreferenceController(context));
controllers.add(new BrightnessLevelpreferenceController(context， lifecycle));
controllers.add(new HdmisettingsPreferenceController(context, KET_HDMI_SETTINGS));
controllers.add(new HideNavigationPreferenceController(context)); //add by LQX
return controllers;
四、动态隐藏还有显示功能
1、相关修改代码文件：
frameworks/base/packages/SystemUI\src\com/android/systemui/statusbar/phone/StatusBar.java
frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/NavigationBarController.java
2、主要修改代码
路径：frameworks/base/packages/SystemUl/src/com/android/systemui/lstatusbar/phone/StatusBar.java
--- a/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -259,6 +259,8 @@ public class StatusBar extends SystemUI implements DemoMode,
public static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
static public final String SYSTEM_DIALOG_REASON_SCREENSHOT = "screenshot";
+ public static final String ACTION_HIDE_NAVIGATION = "action.ACTION_HIDE_NAVIGATION"; //add by LQX广播
+
private static final String BANNER_ACTION_CANCEL =
"com.android.systemui.statusbar.banner_action_cancel";
private static final String BANNER_ACTION_SETUP =
@@ -1099,7 +1101,20 @@ public class StatusBar extends SystemUI implements DemoMode,
mNotificationPanelViewController.setHeadsUpManager(mHeadsUpManager);
mNotificationLogger.setHeadsUpManager(mHeadsUpManager);
- createNavigationBar(result);
+ //createNavigationBar(result);
+
+ try {
+ boolean hideNavStatus = Settings.System.getInt(mContext.getContentResolver(),Settings.System.SYSTEM_HIDE_NAVIGATION,0) != 0;
+
+ //Log.d(TAG, "====== Navigation ====== " + hideNavStatus);
+ if (!hideNavStatus) {
+ createNavigationBar(result);
+ }
+ } catch (Exception e) {
+ Log.d(TAG, "====== Navigation ====== " + e);
+ }
+
+ setNavigationStatus(); //add by LQX开机设置导航栏状态
if (ENABLE_LOCKSCREEN_WALLPAPER && mWallpaperSupported) {
mLockscreenWallpaper = mLockscreenWallpaperLazy.get();
@@ -1288,6 +1303,7 @@ public class StatusBar extends SystemUI implements DemoMode,
filter.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); //add by LQX接收设置应用发送出来的广播
mBroadcastDispatcher.registerReceiver(mBroadcastReceiver, filter, null, UserHandle.ALL);
}
@@ -1362,6 +1378,45 @@ public class StatusBar extends SystemUI implements DemoMode,
}
}
+//add by LQX
+ private boolean mHideNavStatus = true;
+ private static final int MSG_HIDE_NAVIGATION_STATUS = 1060;
+
+ private void setNavigationStatus() {
+ boolean hideNavStatus = Settings.System.getInt(mContext.getContentResolver(),Settings.System.SYSTEM_HIDE_NAVIGATION,0) != 0;
+ if(hideNavStatus)
+ hideNavigation();
+ else{
+ showNavigation();
+ }
+ }
+
+ private void showNavigation() {
+ boolean hideNavStatus = Settings.System.getInt(mContext.getContentResolver(),Settings.System.SYSTEM_HIDE_NAVIGATION,0) != 0;
+ if (!mHideNavStatus && !hideNavStatus){
+ Log.d(TAG,"====== show Navigation ======");
+ NavigationBarView mNavigationBarView = mNavigationBarController.getDefaultNavigationBarView();
+
+ if (mNavigationBarView == null)
+ mNavigationBarController.createNavigationBars(true,null);
+
+ mHideNavStatus = true;
+ }
+ }
+
+ private void hideNavigation() {
+ if (mHideNavStatus){
+ Log.d(TAG,"====== hide Navigation ======");
+ NavigationBarView mNavigationBarView = mNavigationBarController.getDefaultNavigationBarView();
+
+ if (mNavigationBarView != null)
+ mNavigationBarController.hideNavigationBar();
+
+ mHideNavStatus = false;
+ }
+ }
+//end,add by LQX
+
// TODO(b/117478341): This was left such that CarStatusBar can override this method.
// Try to remove this.
protected void createNavigationBar(@Nullable RegisterStatusBarResult result) {
@@ -1974,6 +2029,9 @@ public class StatusBar extends SystemUI implements DemoMode,
case MSG_LAUNCH_TRANSITION_TIMEOUT:
onLaunchTransitionTimeout();
break;
+ case MSG_HIDE_NAVIGATION_STATUS: //add by LQX接收到广播后，执行隐藏或者显示导航栏功能；
+ setNavigationStatus();
+ break;
}
}
}
@@ -2804,6 +2862,10 @@ public class StatusBar extends SystemUI implements DemoMode,
}
else if (DevicePolicyManager.ACTION_SHOW_DEVICE_MONITORING_DIALOG.equals(action)) {
mQSPanel.showDeviceMonitoringDialog();
+ }
+ else if(ACTION_HIDE_NAVIGATION.equals(action)) { //接收广播
+ mHandler.removeMessages(MSG_HIDE_NAVIGATION_STATUS);
+ mHandler.sendEmptyMessageDelayed(MSG_HIDE_NAVIGATION_STATUS, 350); //使用Handler来延时执行隐藏和显示功能，防止反复快速点击导航栏按钮导致异常；
}
}
};
3、修改NavigationBarControllerjava
文件: frameworks/base/packages/SystemU/src/com/android/systemui/statusbar/NavigationBarController.java
--- a/frameworks/base/packages/SystemuI/src/com/android/systemui/statusbar/NavigationBarController,java
+++ b/frameworks/base/packages/SystenuI/src/com/android/systemui/statusbar/NavigationBarController.java3
@ -178,6 +178,13 @@ public class NavigationBarController implements Callbacks {
}
}
public void hideNavigationBar() {//add by LQX
Display[] displays = mDisplayManager.getDisplays();
for (Display display : displays) {
removeNavigationBar(display.getDisplayId());
}
}
/** @see NavigationBarFragment#checkNavBarModes() */
4、现在系统默认是隐藏导航栏，如需默认显示导航栏，请按下面的设置即可
文件:frameworks/base/packages/SettingsProvider/res/values/defaults.xm
值为true: 隐藏导航栏:
值为false: 显示导航栏
<bool name="def_hide_navigation">true</bool>
五、创建系统导航栏广播接口
1、定义导航栏显示与隐藏的广播
public static final String ACTION_API_HIDE_NAVIGATION = "action.ACTION_API_HIDE_NAVIGATION"; //隐藏导航栏广播
public static final String ACTION_API_SHOW_NAVIGATION ="action.ACTION_API_SHOW_NAVIGATION"; //显示导航栏广播
2、系统代码实现
文件路径：frameworks/base/packages/SystemUl/src/com/android/systemui/statusbar/phone/StatusBar.java
创建了两个接收广播，待应用发送这两个广播来实现导航栏隐藏和显示;
--- a/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -259,6 +259,10 @@ public class StatusBar extends SystemUI implements DemoMode,
public static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
static public final String SYSTEM_DIALOG_REASON_SCREENSHOT = "screenshot";
public static final String ACTION_HIDE_NAVIGATION = "action.ACTION_HIDE_NAVIGATION"; //add by LQX
+ public static final String ACTION_API_HIDE_NAVIGATION = "action.ACTION_API_HIDE_NAVIGATION"; //add by LQX
+ public static final String ACTION_API_SHOW_NAVIGATION = "action.ACTION_API_SHOW_NAVIGATION"; //add by LQX
+
private static final String BANNER_ACTION_CANCEL =
"com.android.systemui.statusbar.banner_action_cancel";
@@ -1288,6 +1305,9 @@ public class StatusBar extends SystemUI implements DemoMode,
filter.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); //add by LQX
+ filter.addAction(ACTION_API_HIDE_NAVIGATION); //add by LQX添加到广播队列里
+ filter.addAction(ACTION_API_SHOW_NAVIGATION); //add by LQX添加到广播队列里
mBroadcastDispatcher.registerReceiver(mBroadcastReceiver, filter, null, UserHandle.ALL);
}
@@ -1362,6 +1382,57 @@ public class StatusBar extends SystemUI implements DemoMode,
}
}
private void hideNavigation() {
if (mHideNavStatus){
Log.d(TAG,"====== hide Navigation ======");
NavigationBarView mNavigationBarView = mNavigationBarController.getDefaultNavigationBarView();
if (mNavigationBarView != null)
mNavigationBarController.hideNavigationBar();
mHideNavStatus = false;
}
}
+ private void apiShowNavigation() {
+ if (!mHideNavStatus){
+ Log.d(TAG,"====== api show Navigation ======");
+ NavigationBarView mNavigationBarView = mNavigationBarController.getDefaultNavigationBarView();
+
+ if (mNavigationBarView == null)
+ mNavigationBarController.createNavigationBars(true,null);
+
+ mHideNavStatus = true;
+ }
+ }
//end,add by LQX
// TODO(b/117478341): This was left such that CarStatusBar can override this method.
// Try to remove this.
protected void createNavigationBar(@Nullable RegisterStatusBarResult result) {
@@ -2804,7 +2878,19 @@ public class StatusBar extends SystemUI implements DemoMode,
}
else if (DevicePolicyManager.ACTION_SHOW_DEVICE_MONITORING_DIALOG.equals(action)) {
mQSPanel.showDeviceMonitoringDialog();
}
//add by LQX
else if(ACTION_HIDE_NAVIGATION.equals(action)) {
mHandler.removeMessages(MSG_HIDE_NAVIGATION_STATUS);
mHandler.sendEmptyMessageDelayed(MSG_HIDE_NAVIGATION_STATUS, 350);
+ }
+ else if(ACTION_API_HIDE_NAVIGATION.equals(action)) {
+ hideNavigation(); //隐藏导航栏
+ }
+ else if(ACTION_API_SHOW_NAVIGATION.equals(action)) {
+ apiShowNavigation(); //显示导航栏
}
//end,add by LQX
总结
教程结束！编译成功后可以先用adb测试：
PS:对了！踩到的坑，改了系统api需要更新
make update-api
adb shell
am broadcast -a "action.ACTION_API_SHOW_NAVIGATION"
am broadcast -a "action.ACTION_API_HIDE_NAVIGATION"
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