1.修改UWA Signature导航条强制更新布局。

RedAnt ERP Mobile/common/Functions/signature/SignatureViewController.m

@@ -112,6 +112,7 @@
         self.navigationItem.rightBarButtonItems=[NSArray arrayWithObjects:doneBtn,clearBtn,settingBtn , nil];
     }
 
+    [self.navigationController.navigationBar layoutIfNeeded];
     
     [self.signatureView setLineWidth:self.linewidth];
     self.signatureView.foregroundLineColor = [UIColor colorWithRed:0.204 green:0.596 blue:0.859 alpha:1.000];