1.修改Apex Mobile Result，将参数类型改为Mutable。

common/customUI/ResultViewController.h

@@ -38,7 +38,7 @@ UIKIT_EXTERN const int delta;
 @property (strong, nonatomic) NSString *download_query;
 @property (nonatomic,copy) NSString *documentPath;
 @property (nonatomic,assign) NSInteger offset;
-@property (nonatomic,strong) NSDictionary *params;
+@property (nonatomic,strong) NSMutableDictionary *params;
 @property (nonatomic,strong) QLPreviewController *quickLook;
 
 @property (assign) unsigned long default_line_color;