RK3566&RK3568安卓11隐藏状态栏带接口

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前言

关于Android系统的状态栏，不同的客户有不同的需求: 有些客户需要永久隐藏状态栏，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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一、创建全局变量

1、创建全局变量并保存状态栏状态，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_STATUS_BAR 全局变量: SYSTEM_HIDE_STATUS_BAR = “hide_status_bar”
这个是需要放在 public static final class System extends NameValueTable {
里面的哦

/**
* add by LQX at 20240116
*/
public static final String SYSTEM_HIDE_STATUS_BAR = "hide_status_bar";

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_STATUS_BAR 的字符值 = def_hide_status_bar,值为bool类型;
值为true: 隐藏状态栏;
值为false: 显示状态栏;

<!-- add by LQX -->
	<bool name="def_hide_status_bar">false</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_status_bar">Hide Status Bar</string>
<!-- end, add by LQX-->

中文字体: packages/apps/Settings/res/values-zh-rCN/strings.xml

<!-- add by LQX-->
<string name="hide_status_bar">隐藏状态栏</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_status_bar” ===>按钮控制健值
android:title=“@string/hide_status_bar”= = >标题，使用上面2中配置好的

<!-- add by LQX-->
    <SwitchPreference
        android:key="hide_status_bar"
        android:title="@string/hide_status_bar" />
	
<!-- 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: HideStatusBarPreferenceController
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 HideStatusBarPreferenceController extends AbstractPreferenceController implements
        PreferenceControllerMixin, Preference.OnPreferenceChangeListener {

    private static final String TAG = "HideStatusBar";

    private static final boolean DEBUG = true;

    private static final String KEY_HIDE_STATUS_BAR = "hide_status_bar";

    public static final String ACTION_HIDE_STATUS_BAR = "action.ACTION_HIDE_STATUS_BAR";

    public HideStatusBarPreferenceController(Context context) {
        super(context);
    }

    @Override
    public String getPreferenceKey() {
        return KEY_HIDE_STATUS_BAR;
    }

    @Override
    public boolean isAvailable() {
        return true;
    }

    @Override
    public void updateState(Preference preference) {
        int value = Settings.System.getInt(
                mContext.getContentResolver(), Settings.System.SYSTEM_HIDE_STATUS_BAR, 0);
        ((SwitchPreference) preference).setChecked(value != 0);
    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {
        boolean value = (Boolean) newValue;

        if(DEBUG) {
            Log.d(TAG, "key value " + value);
        }

        Settings.System.putInt(
                mContext.getContentResolver(), Settings.System.SYSTEM_HIDE_STATUS_BAR, value ? 1 : 0);

        Intent intent = new Intent(ACTION_HIDE_STATUS_BAR);
        mContext.sendBroadcast(intent); //发送广播
        return true;
    }
}

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_STATUS_BAR = "action.ACTION_HIDE_STATUS_BAR"; //add by LQX
+	
     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);
+       setStatusBar(); //add by LQX开机设置状态栏栏状态
+
         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_STATUS_BAR); //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 void setStatusBar() {
+            boolean hideStatusBar = +Settings.System.getInt(mContext.getContentResolver(),Settings.System.SYSTEM_HIDE_STATUS_BAR,0) != 0;
+
 +                   if(hideStatusBar)
  +                  hideStatusBar();
   +         else{
    +                showStatusBar();
     +           }
      +  }
+
 +              private void showStatusBar() {
  +              if (mPhoneStatusBarWindow!=null){
   +                     Log.d(TAG,"====== show StatusBar ======");
    +                               mPhoneStatusBarWindow.setVisibility(View.VISIBLE);
     +               }
      +      }
+
 +           private void hideStatusBar() {
  +              if (mPhoneStatusBarWindow != null){
   +                     Log.d(TAG,"====== hide StatusBar ======");
    +                    mPhoneStatusBarWindow.setVisibility(View.GONE);
     +               }
      +      }
+//end,add by LQX
+
     // TODO(b/117478341): This was left such that CarStatusBar can override this method.
     // Try to remove this.
@@ -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_STATUS_BAR.equals(action)) {
+                setStatusBar();
+           }
             }
         }
     };

4、现在系统默认是隐藏导航栏，如需默认隐藏状态栏，请按下面的设置即可
文件:frameworks/base/packages/SettingsProvider/res/values/defaults.xm
值为true: 隐藏状态栏:
值为false: 显示状态栏

<bool name="def_hide_status_bar">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_STATUS_BAR = "action.ACTION_API_HIDE_STATUS_BAR"; //add by LQX 隐藏状态栏广播
    public static final String ACTION_API_SHOW_STATUS_BAR = "action.ACTION_API_SHOW_STATUS_BAR"; //add by LQX 显示状态栏广播

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_STATUS_BAR = "action.ACTION_API_HIDE_STATUS_BAR"; //add by LQX 隐藏状态栏广播
+       public static final String ACTION_API_SHOW_STATUS_BAR = "action.ACTION_API_SHOW_STATUS_BAR"; //add by LQX 显示状态栏广播
+       
     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_STATUS_BAR); //add by LQX 添加到广播队列里
+        filter.addAction(ACTION_API_SHOW_STATUS_BAR); //add by LQX 添加到广播队列里
         mBroadcastDispatcher.registerReceiver(mBroadcastReceiver, filter, null, UserHandle.ALL);
     }

     // 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();
            }  
            else if(ACTION_HIDE_STATUS_BAR.equals(action)) {
                setStatusBar();
            }
+            else if(ACTION_API_HIDE_STATUS_BAR.equals(action)) {
+               hideStatusBar(); //隐藏状态栏
+         }
+        else if(ACTION_API_SHOW_STATUS_BAR.equals(action)) {
+           showStatusBar(); //显示状态栏
+      }
            }
     

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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_STATUS_BAR"
am broadcast -a "action.ACTION_API_HIDE_STATUS_BAR"