diff --git a/app/src/main/java/com/shuwei/intelligent/shelves/net/LoadingDialog.kt b/app/src/main/java/com/shuwei/intelligent/shelves/net/LoadingDialog.kt
index 2a63c93..e30d368 100644
--- a/app/src/main/java/com/shuwei/intelligent/shelves/net/LoadingDialog.kt
+++ b/app/src/main/java/com/shuwei/intelligent/shelves/net/LoadingDialog.kt
@@ -17,25 +17,33 @@ object Loading {
     private var dialog: LoadingDialog? = null
 
     fun show(activity: Activity) {
-        if (activity.isFinishing || activity.isDestroyed) {
-            return
+        try {
+            if (activity.isFinishing || activity.isDestroyed) {
+                return
+            }
+            if (dialog?.isShowing == true) {
+                dialog?.dismiss()
+            }
+            if (dialog == null) {
+                dialog = LoadingDialog(activity)
+            }
+            dialog?.show()
+        } catch (e: Exception) {
+            e.printStackTrace()
         }
-        if (dialog?.isShowing == true) {
-            dialog?.dismiss()
-        }
-        if (dialog == null) {
-            dialog = LoadingDialog(activity)
-        }
-        dialog?.show()
     }
 
     fun dismiss() {
-        dialog?.let {
-            if (it.isShowing) {
-                it.dismiss()
+        try {
+            dialog?.let {
+                if (it.isShowing) {
+                    it.dismiss()
+                }
             }
+            dialog = null
+        } catch (e: Exception) {
+            e.printStackTrace()
         }
-        dialog = null
     }
 
 }