补充UI细节 添加每日挑战

src/models/LevelManager.ts

@@ -141,6 +141,11 @@ export class LevelManager {
         })
     }
 
+    public getLevelList(difficulty: string): Array<string> {
+        var list = this.levelMap.get(difficulty)
+        return list
+    }
+
     public getLevelStr(difficulty: string, index: number): string {
         var list = this.levelMap.get(difficulty)
         if (list) {