diff --git a/appbase/build.properties b/appbase/build.properties
index ffc64ae..d0c8db3 100644
--- a/appbase/build.properties
+++ b/appbase/build.properties
@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Mon Apr 27 18:32:35 CST 2026
+#Mon Apr 27 19:22:37 CST 2026
 stageCount=20
 libraryProject=libappbase
 baseVersion=15.15
 publishVersion=15.15.19
-buildCount=17
+buildCount=26
 baseBetaVersion=15.15.20
diff --git a/appbase/src/main/AndroidManifest.xml b/appbase/src/main/AndroidManifest.xml
index f6a8420..ce1e068 100644
--- a/appbase/src/main/AndroidManifest.xml
+++ b/appbase/src/main/AndroidManifest.xml
@@ -16,6 +16,17 @@
             android:label="@string/app_name"
             android:exported="true"
             android:resizeableActivity="true"
+            android:launchMode="singleTop"
+            android:configChanges="screenSize|smallestScreenSize|screenLayout|orientation">
+
+        </activity>
+
+        <activity
+            android:name=".MainActivityAlias"
+            android:label="@string/app_name"
+            android:exported="true"
+            android:resizeableActivity="true"
+            android:launchMode="singleTop"
             android:configChanges="screenSize|smallestScreenSize|screenLayout|orientation">
 
             <intent-filter>
diff --git a/appbase/src/main/java/cc/winboll/studio/appbase/MainActivity.java b/appbase/src/main/java/cc/winboll/studio/appbase/MainActivity.java
index 406e95d..a838651 100644
--- a/appbase/src/main/java/cc/winboll/studio/appbase/MainActivity.java
+++ b/appbase/src/main/java/cc/winboll/studio/appbase/MainActivity.java
@@ -161,5 +161,25 @@ public class MainActivity extends Activity {
         Intent aboutIntent = new Intent(getApplicationContext(), AboutActivity.class);
         startActivity(aboutIntent);
     }
+
+	public void onSplitScreenMode(View view) {
+        LogUtils.d(TAG, "onSplitScreenMode() 分屏测试按钮已点击");
+        ToastUtils.show("分屏测试：已启动新窗口");
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
+            android.graphics.Rect bounds = new android.graphics.Rect();
+            getWindow().getDecorView().getDisplay().getRectSize(bounds);
+            int height = bounds.height();
+            int width = bounds.width();
+            bounds.set(0, 0, width, height / 2);
+            LogUtils.d(TAG, "onSplitScreenMode() 分屏窗口范围: " + bounds);
+            android.content.Intent intent = new android.content.Intent(this, MainActivityAlias.class);
+            intent.setFlags(android.content.Intent.FLAG_ACTIVITY_NEW_TASK);
+            LogUtils.d(TAG, "onSplitScreenMode() 准备启动MainActivityAlias");
+            android.app.ActivityOptions options = android.app.ActivityOptions.makeBasic();
+            options.setLaunchBounds(bounds);
+            startActivity(intent, options.toBundle());
+            LogUtils.d(TAG, "onSplitScreenMode() MainActivityAlias已启动");
+        }
+    }
 }
 
diff --git a/appbase/src/main/java/cc/winboll/studio/appbase/MainActivityAlias.java b/appbase/src/main/java/cc/winboll/studio/appbase/MainActivityAlias.java
new file mode 100644
index 0000000..776a0f0
--- /dev/null
+++ b/appbase/src/main/java/cc/winboll/studio/appbase/MainActivityAlias.java
@@ -0,0 +1,17 @@
+package cc.winboll.studio.appbase;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Toolbar;
+import cc.winboll.studio.appbase.R;
+
+public class MainActivityAlias extends MainActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setActionBar(toolbar);
+    }
+}
\ No newline at end of file
diff --git a/appbase/src/main/res/layout/activity_main.xml b/appbase/src/main/res/layout/activity_main.xml
index 90b64bc..6835440 100644
--- a/appbase/src/main/res/layout/activity_main.xml
+++ b/appbase/src/main/res/layout/activity_main.xml
@@ -83,6 +83,18 @@
 				android:onClick="onAboutActivity"
 				android:layout_margin="10dp"/>
 
+			<Button
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:text="分屏测试"
+				android:textSize="16sp"
+				android:textColor="@android:color/white"
+				android:background="#81C7F5"
+				android:paddingVertical="12dp"
+				android:layout_marginHorizontal="24dp"
+				android:onClick="onSplitScreenMode"
+				android:layout_margin="10dp"/>
+
 		</LinearLayout>
 
 	</ScrollView>
diff --git a/libappbase/build.properties b/libappbase/build.properties
index ffc64ae..d0c8db3 100644
--- a/libappbase/build.properties
+++ b/libappbase/build.properties
@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Mon Apr 27 18:32:35 CST 2026
+#Mon Apr 27 19:22:37 CST 2026
 stageCount=20
 libraryProject=libappbase
 baseVersion=15.15
 publishVersion=15.15.19
-buildCount=17
+buildCount=26
 baseBetaVersion=15.15.20
diff --git a/libappbase/src/main/java/cc/winboll/studio/libappbase/LogActivity.java b/libappbase/src/main/java/cc/winboll/studio/libappbase/LogActivity.java
index 1845c1a..1a9ca4f 100644
--- a/libappbase/src/main/java/cc/winboll/studio/libappbase/LogActivity.java
+++ b/libappbase/src/main/java/cc/winboll/studio/libappbase/LogActivity.java
@@ -59,6 +59,7 @@ public class LogActivity extends Activity {
      */
     public static void startLogActivity(Context context, boolean newTask) {
         Intent intent = new Intent(context, LogActivity.class);
+        intent.setFlags(0);
 
         if (newTask) {
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
@@ -70,6 +71,7 @@ public class LogActivity extends Activity {
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT);
             intent.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
+
             Rect bounds = new Rect();
             if (context instanceof Activity) {
                 Activity activity = (Activity) context;