--- a/frameworks/base/core/java/com/android/internal/app/ResolverActivity.java+++ b/frameworks/base/core/java/com/android/internal/app/ResolverActivity.java@@ -101,6 +101,10 @@ import java.util.List; import java.util.Objects; import java.util.Set;
+import java.util.concurrent.Executor;+import java.util.function.Consumer;+import android.os.SystemProperties;+import android.app.role.RoleManager;
 /**  * This activity is displayed when the system attempts to start an Intent for@@ -341,6 +345,18 @@ public class ResolverActivity extends Activity implements     protected void onCreate(Bundle savedInstanceState, Intent intent,             CharSequence title, int defaultTitleRes, Intent[] initialIntents,             List rList, boolean supportsAlwaysUseOption) {++               //by Lyle,220923+               String LauncherPkg = SystemProperties.get("persist.sys.def_launherpag");+        if(LauncherPkg!=null/* && !isDefaultLauncher(this,LauncherPkg)*/){+            Log.v("defaultLauncher","-----found default launcher pkg:"+LauncherPkg);+            setDefaltLauncher(this,LauncherPkg);+            startDefaultLauncher(this,LauncherPkg);+            finish();+            return;+        }+               //end+         setTheme(appliedThemeResId());         super.onCreate(savedInstanceState);
@@ -433,6 +449,47 @@ public class ResolverActivity extends Activity implements                 intent.getAction() + ":" + intent.getType() + ":"                         + (categories != null ? Arrays.toString(categories.toArray()) : ""));     }+++       public void setDefaltLauncher(Context context, String packageName) {//by Lyle,220923+        String roleName = "android.app.role.HOME";+        boolean add = true;+        int flags = 0;+        UserHandle user = android.os.Process.myUserHandle();++        RoleManager roleManager = context.getSystemService(RoleManager.class);+        Executor executor = context.getMainExecutor();+        Consumer< Boolean > callback = successful -> {+            if (successful) {+                Log.v("defaultLauncher","set Defalt Launcher successful" );+            } else {+                Log.v("defaultLauncher","set Defalt Launcher failed ");+            }+        };+        roleManager.addRoleHolderAsUser(roleName, packageName, flags, user, executor, callback);+    }++    public void startDefaultLauncher(Context context, String packageName) {+        Intent intent = new Intent();+        PackageManager pm = context.getPackageManager();+        intent = pm.getLaunchIntentForPackage(packageName);+        if (intent != null)+            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);+        try {+            context.startActivity(intent);+        } catch (Exception e) {+            Log.v("defaultLauncher","start Default Launcher failed,not find package:"+packageName );+        }+    }++       public boolean isDefaultLauncher(Context context,String launcherPkg){+        Intent intent = new Intent(Intent.ACTION_MAIN);+        intent.addCategory(Intent.CATEGORY_HOME);+        ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);+        String currentHomePackage = resolveInfo.activityInfo.packageName;+        Log.v("defaultLauncher","-currentHomePackage:"+currentHomePackage);+        return launcherPkg.equals(currentHomePackage);+    }
     private boolean isIntentPicker() {         return getClass().equals(ResolverActivity.class);

--- a/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml+++ b/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml@@ -22,6 +22,7 @@     xmlns:systemui="http://schemas.android.com/apk/res-auto"     android:layout_height="match_parent"     android:layout_width="match_parent"+       android:visibility="gone"     android:background="@drawable/system_bar_background">
     @@ -42,6 +43,7 @@              android:id="@+id/navigation_inflater"         android:layout_width="match_parent"-        android:layout_height="match_parent" />+        android:layout_height="match_parent"+               android:visibility="gone"/>