Force clean cached bt device before ble disconnect, prevent the edeca… #847
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…se on the fast reconnecting
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WalkthroughThis update enhances the Bluetooth device disconnection process in a Flutter application. It ensures that cached device data is cleared only after disconnection, preventing potential issues during rapid reconnections. The changes also include code refactoring to remove redundancy and improve maintainability. Changes
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Files selected (2)
- app/lib/pages/home/device.dart (1)
- app/lib/pages/home/device_settings.dart (1)
Review comments generated (3)
- Review: 3
- LGTM: 0
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| SharedPreferencesUtil().btDeviceStruct = BTDeviceStruct(id: '', name: ''); | ||
| SharedPreferencesUtil().deviceName = ''; | ||
| if (device != null) { | ||
| _bleDisconnectDevice(device!); | ||
| } |
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The changes made here are logical and seem to improve the handling of Bluetooth device disconnection. However, it's important to note that if _bleDisconnectDevice(device!) throws an exception, the subsequent lines will not be executed. This could leave your application in an inconsistent state. To ensure that the application state is always updated, consider using a try/finally block.
+ try {
if (device != null) {
_bleDisconnectDevice(device!);
}
+ } finally {
SharedPreferencesUtil().btDeviceStruct = BTDeviceStruct(id: '', name: '');
SharedPreferencesUtil().deviceName = '';
context.read<DeviceProvider>().setIsConnected(false);
context.read<DeviceProvider>().setConnectedDevice(null);
context.read<DeviceProvider>().updateConnectingStatus(false);
+ }This way, even if _bleDisconnectDevice(device!) throws an exception, the cached Bluetooth device data will still be cleared and the application state will be updated.
| SharedPreferencesUtil().btDeviceStruct = BTDeviceStruct(id: '', name: ''); | ||
| SharedPreferencesUtil().deviceName = ''; |
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The changes made here are good for ensuring that the Bluetooth device data is cleared before disconnection. However, it's important to consider potential race conditions. If another part of your code relies on SharedPreferencesUtil().btDeviceStruct or SharedPreferencesUtil().deviceName, and it runs concurrently with this block, it might encounter null or empty values. To avoid this, you could use a lock mechanism to ensure that only one operation is performed at a time.
+ final _lock = Lock();
...
onPressed: () async {
+ await _lock.synchronized(() async {
SharedPreferencesUtil().btDeviceStruct = BTDeviceStruct(id: '', name: '');
SharedPreferencesUtil().deviceName = '';
if (widget.device != null) {
await _bleDisconnectDevice(widget.device!);
}
context.read<DeviceProvider>().setIsConnected(false);
context.read<DeviceProvider>().setConnectedDevice(null);
context.read<DeviceProvider>().updateConnectingStatus(false);
Navigator.of(context).pop();
+ });
MixpanelManager().disconnectFriendClicked();
},| if (widget.device != null) { | ||
| await _bleDisconnectDevice(widget.device!); | ||
| } | ||
| context.read<DeviceProvider>().setIsConnected(false); | ||
| context.read<DeviceProvider>().setConnectedDevice(null); | ||
| context.read<DeviceProvider>().updateConnectingStatus(false); | ||
| Navigator.of(context).pop(); |
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These lines look fine as they handle the disconnection process and update the state accordingly. However, it would be better to wrap these operations in a try-catch block to handle any exceptions that may occur during the disconnection process. This will improve error handling and provide a more robust solution.
+ try {
if (widget.device != null) {
await _bleDisconnectDevice(widget.device!);
}
context.read<DeviceProvider>().setIsConnected(false);
context.read<DeviceProvider>().setConnectedDevice(null);
context.read<DeviceProvider>().updateConnectingStatus(false);
Navigator.of(context).pop();
+ } catch (e) {
+ // Handle or log the exception
+ }
…se on the fast reconnecting
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