1.增加弹起通知设置

lib/util/native_util.dart

@@ -70,6 +70,10 @@ class NativeUtil {
     return NativeUtil._invokeChannel('notifyInitSuccess');
   }
 
+  static Future<void> openAppSettings() async {
+    return NativeUtil._invokeChannel('openAppSettings');
+  }
+
 //  static Future<Map<String, dynamic>> onPagePop(bool isTop) async {
 //    NativeUtil._invokeChannel('pageDidPop',
 //        params: new Map<String, dynamic>.from({'isTop': isTop}));