修复TaskSchedulerActivity编译错误：使用PopupMenu替代抽象类ContextMenu

- 添加PopupMenu导入
- 替换直接实例化ContextMenu的代码
- 保持原有菜单功能逻辑不变

stallhelper/build.properties

@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Mon May 18 12:05:16 GMT 2026
+#Mon May 18 20:16:15 CST 2026
 stageCount=3
 libraryProject=
 baseVersion=15.20
 publishVersion=15.20.2
-buildCount=3
+buildCount=4
 baseBetaVersion=15.20.3

stallhelper/src/main/java/cc/winboll/studio/stallhelper/activities/TaskSchedulerActivity.java

@@ -11,6 +11,7 @@ import android.view.Window;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.LinearLayout;
+import android.widget.PopupMenu;
 import android.widget.TextView;
 import androidx.appcompat.widget.Toolbar;
 import androidx.recyclerview.widget.LinearLayoutManager;
@@ -336,9 +337,10 @@ public class TaskSchedulerActivity extends WinBoLLActivity {
             viewHolder.mllMain.setOnLongClickListener(new View.OnLongClickListener() {
 					@Override
 					public boolean onLongClick(final View v) {
-						// 动态创建上下文菜单
-						ContextMenu menu = new android.view.ContextMenu(getApplicationContext());
-						menu.add("编辑任务内容").setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+						// 使用PopupMenu替代ContextMenu
+						PopupMenu popup = new PopupMenu(TaskSchedulerActivity.this, v);
+						popup.getMenu().add("编辑任务内容");
+						popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
 								@Override
 								public boolean onMenuItemClick(MenuItem item) {
 									// 直接使用onBind里的position，无需取tag
@@ -347,7 +349,7 @@ public class TaskSchedulerActivity extends WinBoLLActivity {
 								}
 							});
 						// 弹出菜单
-						viewHolder.mllMain.showContextMenu();
+						popup.show();
 						return true;
 					}
 				});