GMS之Launcher中去除默认Search或替换为Chrome Search

将Launcher中搜索框去除

将FeatureFlags.java文件中的QSB_ON_FIRST_SCREEN变量修改为false

\system\vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\config\FeatureFlags.java

/**
 * Defines a set of flags used to control various launcher behaviors.
 *
 * 
All the flags should be defined here with appropriate default values.
 */
public final class FeatureFlags {
    /**
     * Enable moving the QSB on the 0th screen of the workspace. This is not a configuration feature
     * and should be modified at a project level.
     */
   public static final boolean QSB_ON_FIRST_SCREEN = BuildConfig.QSB_ON_FIRST_SCREEN;
   
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在源码中是通过launcher3中的BuildConfig.java去获取变量（默认true），那么在这里将变量修改为false即可（自行添加系统变量进行灵活控制也行）

\system\vendor\mediatek\proprietary\packages\apps\Launcher3\src_build_config\com\android\launcher3\BuildConfig.java

public final class BuildConfig {
    public static final String APPLICATION_ID = "com.android.launcher3";
    public static final boolean DEBUG = false;
    /**
     * Flag to state if the QSB is on the first screen and placed on the top,
     * this can be overwritten in other launchers with a different value, if needed.
     */
    public static final boolean QSB_ON_FIRST_SCREEN = false;
}
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最近在Android 13平台修改以上代码后，在Launcher中并不生效，后来发现，如果SearchLauncherQuickStep存在会默认使用，那么我们的修改就不会生效，因此在这里也需要把它注释掉

system\vendor\partner_gms\products\gms.mk

GMS_PRODUCT_PACKAGES += \
    #SearchLauncherQuickStep
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如何将默认的Search替换为其他的？ 比如项目是出货RU（俄罗斯）的，根据要求需要将Launcher中的默认Google Search 要更换为 Chrome Search

String providerPkg 为 Chrome 浏览器应用的包名

String className 为 launcher中Chrome Search组件的名字

Boolean ruSupport 为了判断当前版本是否为RU版本（一般只有RU地区才需要这样替换Search）

在getSearchWidgetProviderInfo方法中进行修改判断

system\vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\qsb\QsbContainerView.java

     /**
     * returns it's AppWidgetProviderInfo using package name from getSearchWidgetPackageName
     * @param context
     * @return AppWidgetProviderInfo
     */
    @Nullable
    public static AppWidgetProviderInfo getSearchWidgetProviderInfo(@NonNull Context context) {
        String providerPkg = getSearchWidgetPackageName(context);
        if (providerPkg == null) {
            return null;
        }

        //add ---------------------------------------------------------
        String  providerPkg = "com.android.chrome";
        String className = "org.chromium.chrome.browser.searchwidget.SearchWidgetProvider";
        Boolean ruSupport = SystemProperties.get("ro.product.name");
        //end ---------------------------------------------------------
        

        AppWidgetProviderInfo defaultWidgetForSearchPackage = null;
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
        for (AppWidgetProviderInfo info :
                appWidgetManager.getInstalledProvidersForPackage(providerPkg, null)) {
            if (info.provider.getPackageName().equals(providerPkg) && info.configure == null) {
                if ((info.widgetCategory
                        & AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX) != 0) {
                             //add ---------------------------------------------------------
                            if(ruSupport){
                                if(className.equals(info.provider.getClassName())){
                                    return info;
                                }
                            }else{
                                return info;
                            }
                            //end ---------------------------------------------------------
                } else if (defaultWidgetForSearchPackage == null) {
                    defaultWidgetForSearchPackage = info;
                }
            }
        }
        return defaultWidgetForSearchPackage;
    }
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人的精神思想方面的优势越大，给无聊留下的空间就越小。