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网上有说必须加 GMS 框架后才能生效，我这里验证的是不需要，将 GMS 包中的 Chrome.apk 和 TrichromeLibrary.apk 拷贝出来

在 package/apps 目录下新建 Chrome 文件夹，将俩 apk 拷贝至此出，新建 Android.mk

packages\apps\Chrome\Android.mk

################################################################################ ChromeLOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := ChromeLOCAL_MODULE_TAGS := optionalLOCAL_PRODUCT_MODULE := trueLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_OVERRIDES_PACKAGES := Browser Browser2 MtkBrowser MtkBrowserAutoTests BrowserSanityTestLOCAL_REQUIRED_MODULES := TrichromeLibrary BookmarkProvider PartnerBookmarksProviderLOCAL_MULTILIB := bothLOCAL_MODULE_CLASS := APPSLOCAL_DEX_PREOPT := falseLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)include $(CLEAR_VARS)LOCAL_MODULE := TrichromeLibraryLOCAL_MODULE_TAGS := optionalLOCAL_PRODUCT_MODULE := trueLOCAL_SRC_FILES := $(LOCAL_MODULE).apkLOCAL_MULTILIB := bothLOCAL_MODULE_CLASS := APPSLOCAL_DEX_PREOPT := falseLOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)LOCAL_CERTIFICATE := PRESIGNEDinclude $(BUILD_PREBUILT)

在 core.mk 或者 handheld_system.mk 中添加 Chrome 、 TrichromeLibrary 编译，这样预装就搞定了。

接下来修改默认主页面

在 PartnerBookmarksProvider 下新建 PartnerHomepageProvider.java，其中的 HOMEPAGE_URI 就是默认主页

alps\packages\providers\PartnerBookmarksProvider\src\com\android\providers\partnerbookmarks\PartnerHomepageProvider.java

package com.android.providers.partnerbookmarks;import android.content.ContentProvider;import android.content.ContentValues;import android.content.UriMatcher;import android.database.Cursor;import android.database.MatrixCursor;import android.net.Uri;public class PartnerHomepageProvider extends ContentProvider {
       private static String HOMEPAGE_URI = "https://www.cisco.com";    private static final int URI_MATCH_HOMEPAGE = 0;    private static final UriMatcher URI_MATCHER = new UriMatcher(UriMatcher.NO_MATCH);    static {
           URI_MATCHER.addURI("com.android.partnerbrowsercustomizations", "homepage",                URI_MATCH_HOMEPAGE);    }    @Override    public boolean onCreate() {
           return true;    }    @Override    public String getType(Uri uri) {
           switch (URI_MATCHER.match(uri)) {
               case URI_MATCH_HOMEPAGE:                return "vnd.android.cursor.item/partnerhomepage";            default:                return null;        }    }    @Override    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,                        String sortOrder) {
           switch (URI_MATCHER.match(uri)) {
               case URI_MATCH_HOMEPAGE:                MatrixCursor cursor = new MatrixCursor(new String[] {
    "homepage" }, 1);                cursor.addRow(new Object[] {
    HOMEPAGE_URI });                return cursor;            default:                return null;        }    }    @Override    public Uri insert(Uri uri, ContentValues values) {
           throw new UnsupportedOperationException();    }    @Override    public int delete(Uri uri, String selection, String[] selectionArgs) {
           throw new UnsupportedOperationException();    }    @Override    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
           throw new UnsupportedOperationException();    }}

配置 provider 使它能够被 Chrome apk 访问到。重新编译大功告成。

alps\packages\providers\PartnerBookmarksProvider\AndroidManifest.xml

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