更新loading

.dart_tool/package_config.json

@@ -165,7 +165,7 @@
     },
     {
       "name": "flutter_native_image",
-      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/flutter_native_image-0.0.5+2",
+      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/flutter_native_image-0.0.5+3",
       "packageUri": "lib/",
       "languageVersion": "1.19"
     },
@@ -465,7 +465,7 @@
     },
     {
       "name": "sqflite",
-      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/sqflite-1.3.1+1",
+      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/sqflite-1.3.1+2",
       "packageUri": "lib/",
       "languageVersion": "2.7"
     },
@@ -537,13 +537,13 @@
     },
     {
       "name": "url_launcher",
-      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/url_launcher-5.7.5",
+      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/url_launcher-5.7.6",
       "packageUri": "lib/",
       "languageVersion": "2.1"
     },
     {
       "name": "url_launcher_linux",
-      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/url_launcher_linux-0.0.1+1",
+      "rootUri": "file:///Users/fnuser/.pub-cache/hosted/pub.flutter-io.cn/url_launcher_linux-0.0.1+3",
       "packageUri": "lib/",
       "languageVersion": "2.1"
     },
@@ -620,7 +620,7 @@
       "languageVersion": "2.8"
     }
   ],
-  "generated": "2020-10-17T09:07:26.676256Z",
+  "generated": "2020-10-22T02:18:13.447793Z",
   "generator": "pub",
   "generatorVersion": "2.8.2"
 }

lib/dialog/loading/loading.dart

@@ -3,31 +3,31 @@ import 'package:zhiying_base_widget/dialog/loading/loading_dialog.dart';
 
 // loading弹窗
 class Loading {
-  static LoadingDialog _dialog;
-  static BuildContext _context;
+  static OverlayEntry _overlayEntry;
 
-  static Future show(BuildContext context, {
+  static Future show(
+    BuildContext context, {
     String msg,
   }) async {
     dismiss();
+    _overlayEntry = new OverlayEntry(builder: (context) {
+      return GestureDetector(
+        onTap: dismiss,
+        child: Container(
+          color: Colors.black.withOpacity(0.5),
+          child: LoadingDialog(
+            message: msg,
+          ),
+        ),
+      );
+    });
 
-    _context = context;
-    _dialog = LoadingDialog(
-      message: msg,
-    );
-    var result = await showDialog(context: context, child: _dialog);
-    _context = null;
-    _dialog = null;
-    return result;
+    //插入到 Overlay中显示 OverlayEntry
+    Overlay.of(context).insert(_overlayEntry);
   }
 
   static dismiss() {
-    if (_dialog != null && _context != null) {
-      if (Navigator.canPop(_context)) {
-        Navigator.pop(_context);
-      }
-    }
-    _context = null;
-    _dialog = null;
+    _overlayEntry?.remove();
+    _overlayEntry = null;
   }
 }

lib/dialog/loading/loading_dialog.dart

@@ -10,7 +10,9 @@ class LoadingDialog extends StatelessWidget {
   Widget build(BuildContext context) {
     return GestureDetector(
       onTap: () {
-        Navigator.pop(context);
+        if (Navigator.canPop(context)) {
+          Navigator.pop(context);
+        }
       },
       child: Scaffold(
         backgroundColor: Colors.transparent,