Added new states of discovery

Author: Pipe-Runner

lib/screens/Discovery/Discovery.dart

@@ -36,6 +36,7 @@ class _DiscoveryState extends State<Discovery> {
  _updateDeviceList(fetchedDevices);
  _updateFetchStatus(FetchStatus.FETCHING);
  }).catchError((onError) {
+ _clearDeviceList();
  _updateFetchStatus(FetchStatus.CONNECTION_ERROR);
  print(onError);
  });
@@ -85,16 +86,30 @@ class _DiscoveryState extends State<Discovery> {
  );
  break;
  case FetchStatus.FETCHING:
- _child = ListView.builder(
- itemCount: _devices.length,
- itemBuilder: (BuildContext context, int index) {
- return new DeviceListItem(
- id: _devices[index].id,
- type: _devices[index].type,
- title: _devices[index].title,
- description: _devices[index].description,
- );
- });
+ if (_devices.length == 0) {
+ _child = Row(
+ mainAxisAlignment: MainAxisAlignment.center,
+ crossAxisAlignment: CrossAxisAlignment.center,
+ children: <Widget>[
+ Icon(Icons.location_disabled),
+ Padding(
+ padding: EdgeInsets.only(left: 12),
+ ),
+ Text("No Devices Found")
+ ],
+ );
+ } else {
+ _child = ListView.builder(
+ itemCount: _devices.length,
+ itemBuilder: (BuildContext context, int index) {
+ return new DeviceListItem(
+ id: _devices[index].id,
+ type: _devices[index].type,
+ title: _devices[index].title,
+ description: _devices[index].description,
+ );
+ });
+ }
  break;
  case FetchStatus.CONNECTION_ERROR:
  _child = Row(
@@ -105,7 +120,7 @@ class _DiscoveryState extends State<Discovery> {
  Padding(
  padding: EdgeInsets.only(left: 12),
  ),
- Text("Dock Broken")
+ Text("Dock Unreachable")
  ],
  );
  break;