1.修改RA Image Mode LeftBarButtonItem。

RA Image/RA Image/BasicModeViewController.m

@@ -47,8 +47,8 @@
     
     self.title = self.name;
     
-    UIBarButtonItem *returnItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(returnItemClick:)];
-    self.navigationItem.backBarButtonItem = returnItem;
+//    UIBarButtonItem *returnItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(returnItemClick:)];
+//    self.navigationItem.leftBarButtonItem = returnItem;
 }
 
 - (void)returnItemClick:(UIBarButtonItem *)sender {