简化应用启动窗口配置：移除分屏测试功能，MainActivity 设为唯一启动器

- 删除 MainActivityAlias 分屏窗口类及相关文件
- 移除 AndroidManifest 中的 MainActivityAlias activity 声明
- 从 activity_main.xml 移除分屏测试按钮
- 删除 MainActivity 中的 onSplitScreenMode() 方法
- 为 MainActivity 添加 LAUNCHER intent-filter，作为唯一启动主窗口

appbase/src/main/AndroidManifest.xml

@@ -19,28 +19,16 @@
             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>
-
                 <action android:name="android.intent.action.MAIN"/>
-
                 <category android:name="android.intent.category.LAUNCHER"/>
-
                 <category android:name="android.intent.category.DEFAULT"/>
-
             </intent-filter>
 
         </activity>
 
+
+
         <activity
             android:name=".Main2Activity"
             android:label="@string/app_name"

appbase/src/main/java/cc/winboll/studio/appbase/MainActivity.java

@@ -162,25 +162,7 @@ public class MainActivity extends Activity {
         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");
-        }
-    }
+
 
 	public void onMultiInstance(View view) {
         LogUtils.d(TAG, "onMultiInstance() 多开窗口按钮已点击");

appbase/src/main/java/cc/winboll/studio/appbase/MainActivityAlias.java

@@ -1,17 +0,0 @@
-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);
-    }
-}

appbase/src/main/res/layout/activity_main.xml

@@ -83,17 +83,7 @@
 				android:onClick="onToastUtilsTest"
 				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"/>
+
 
 			<Button
 				android:layout_width="match_parent"