AOSP | Android 11 Framework 修改记录（持续更新）

本文虽基于AOSP 11，但部分修改可能会涉及MTK平台相关代码，其他未涉及的代码修改均使用AOSP 11代码为例子。

作者其他文章

• AOSP | Android 9 控制导航栏的隐藏与显示
• AOSP | Android 11 Settings 开发(01) 环境搭建
• AOSP | Android 9 Framework 修改记录（持续更新）
• AOSP | Android 9 由壁纸切换带来的手机主题变更及问题出现）
• AOSP | Android 9 过滤Recents
• AOSP | Android 9 APP源码移植到系统源码中进行编译
• 后端 | 沙箱环境下实现支付宝网站支付
• 前端 | vue-echarts渲染时视图模糊的解决办法

1、Settings一级菜单删除/隐藏/屏蔽(以Settings - Network为例)

packages\apps\Settings\res\xml\top_level_settings.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:settings="http://schemas.android.com/apk/res-auto"
    android:key="top_level_settings">

    <!-- hidden menu. -->
    <!--    
    <Preference
        android:key="top_level_network"
        android:title="@string/network_dashboard_title"
        android:summary="@string/summary_placeholder"
        android:icon="@drawable/ic_homepage_network"
        android:order="-120"
        android:fragment="com.android.settings.network.NetworkDashboardFragment"
        settings:controller="com.android.settings.network.TopLevelNetworkEntryPreferenceController"/>
    -->
            
</PreferenceScreen>

2-1、Settings二级菜单删除/隐藏/屏蔽(以Settings - System - Gesture为例, 第一种方法修改xml文件)

packages\apps\Settings\res\xml\system_dashboard_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:settings="http://schemas.android.com/apk/res-auto"
    android:key="system_dashboard_screen"
    android:title="@string/header_category_system"
    settings:initialExpandedChildrenCount="4">

    
    <!-- Hidden menu -->
    <!--
    <Preference
        android:key="gesture_settings"
        android:title="@string/gesture_preference_title"
        android:icon="@drawable/ic_settings_gestures"
        android:order="-250"
        android:fragment="com.android.settings.gestures.GestureSettings"
        settings:controller="com.android.settings.gestures.GesturesSettingPreferenceController"/>
    -->
</PreferenceScreen>

2-2、Settings二级菜单删除/隐藏/屏蔽(以Settings - System - Gesture为例, 第二种方法修改java文件)

packages\apps\Settings\src\com\android\settings\system\SystemDashboardFragment.java

@Override
public void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        final PreferenceScreen screen = getPreferenceScreen();
+       /// M: modify by wayhoi, hidden menu. @{
+       // if you unknow the key of preference
+       int preferenceCount = screen.getPreferenceCount();
+       for (int i = 0; i < preferenceCount; i++) {
+           //get the key of preference
+           Preference preference = screen.getPreference(i);
+           Log.v("wayhoi", preference.getKey().toString());
+       }
+   
+       // hidden the target menu 
+     	String key = "gesture_settings";
+       Preference getturePref = screen.findPreference(key);
+       if (getturePref != null) {
+           screen.removePreference(getturePref);
+       }
+       /// }

}

3、Settings - System 取消折叠子菜单

packages\apps\Settings\src\com\android\settings\system\SystemDashboardFragment.java

@Override
public void onCreate(Bundle icicle) {
     super.onCreate(icicle);

     final PreferenceScreen screen = getPreferenceScreen();
     // We do not want to display an advanced button if only one setting is hidden
     /// M: modify by wayhoi, unfoldable options
-    if (getVisiblePreferenceCount(screen) == screen.getInitialExpandedChildrenCount() + 1) {
+    //if (getVisiblePreferenceCount(screen) == screen.getInitialExpandedChildrenCount() + 1) {
    		screen.setInitialExpandedChildrenCount(Integer.MAX_VALUE);
-    }      
+    //}

     showRestrictionDialog();
}

4、Settings - Display - Wallpaper 隐藏动态壁纸、壁纸选项

packages\apps\Settings\src\com\android\settings\wallpaper\WallpaperTypePreferenceContoller.java

private void populateWallpaperTypes() {
        // Search for activities that satisfy the ACTION_SET_WALLPAPER action
        final Intent intent = new Intent(Intent.ACTION_SET_WALLPAPER);
        final PackageManager pm = mContext.getPackageManager();
        final List<ResolveInfo> rList = pm.queryIntentActivities(intent,
                PackageManager.MATCH_DEFAULT_ONLY);

        removeUselessExistingPreference(rList);
        mScreen.setOrderingAsAdded(false);
        // Add Preference items for each of the matching activities
        for (ResolveInfo info : rList) {
            final String packageName = info.activityInfo.packageName;
+           /// M: modify by wayhoi, hidden live-wallpaper & wallpaper @{
+           if (packageName.equals("com.android.wallpaper.livepicker") 
+               || packageName.equals("com.android.wallpaperpicker")) {
+               continue;
+           }
+           /// }
            Preference pref = mScreen.findPreference(packageName);
            if (pref == null) {
                pref = new Preference(mScreen.getContext());
            }
            final Intent prefIntent = new Intent(intent).addFlags(
                    Intent.FLAG_ACTIVITY_FORWARD_RESULT);
            prefIntent.setComponent(new ComponentName(packageName, info.activityInfo.name));
            pref.setIntent(prefIntent);
            pref.setKey(packageName);
            CharSequence label = info.loadLabel(pm);
            if (label == null) {
                label = packageName;
            }
            pref.setTitle(label);
            pref.setIcon(info.loadIcon(pm));
            mScreen.addPreference(pref);
        }
    }

5、Recents过滤

packages/apps/Launcher3/quickstep/src/com/android/quickstep/RecentTasksList.java

TaskLoadResult loadTasksInBackground(int numTasks, int requestId, boolean loadKeysOnly) {
    int currentUserId = Process.myUserHandle().getIdentifier();
    List<ActivityManager.RecentTaskInfo> rawTasks =
            mActivityManagerWrapper.getRecentTasks(numTasks, currentUserId);
+   /// M: modify by wayhoi, remove settings in recents list. @{
+   if (rawTasks.size() > 0) {
+       for (int i = 0; i < rawTasks.size(); i++) {
+           if (rawTasks.get(i).topActivity != null
+                   && rawTasks.get(i).topActivity.getPackageName()
+                   .equals("com.android.settings")) {
+               rawTasks.remove(i);
+               break;
+           } else if (rawTasks.get(i).baseActivity != null
+                   && rawTasks.get(i).baseActivity.getPackageName()
+                   .equals("com.android.settings")) {
+               rawTasks.remove(i);
+               break;
+           }
+       }
+   }
+   /// }
    // The raw tasks are given in most-recent to least-recent order, we need to reverse it
    Collections.reverse(rawTasks);
    ……
    return allTasks;
}

6、修复已连接Wi-Fi，但显示无网络连接

packages/modules/NetworkStack/src/com/android/server/connectivity/NetworkMonitor.java

private boolean getIsCaptivePortalCheckEnabled() {
    String symbol = CAPTIVE_PORTAL_MODE;
    int defaultValue = CAPTIVE_PORTAL_MODE_PROMPT;
    int mode = mDependencies.getSetting(mContext, symbol, defaultValue);
+   /// M: modify by wayhoi, fix connected but no internet. @{
+   //return mode != CAPTIVE_PORTAL_MODE_IGNORE;
+   return false;
+   /// }
}