@[Flutter Blue] @[Android]

Flutter blue Android 蓝牙扫描连接不稳定问题

主要和gatt close bug 有关

https://github.com/pauldemarco/flutter_blue/blob/master/android/src/main/java/com/pauldemarco/flutter_blue/FlutterBluePlugin.java

line: 318
case “disconnect”:
{
String deviceId = (String)call.arguments;
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(deviceId);
int state = mBluetoothManager.getConnectionState(device, BluetoothProfile.GATT);
BluetoothDeviceCache cache = mDevices.remove(deviceId);
BluetoothDeviceCache cache = mDevices.get(deviceId);
if(cache != null) {
BluetoothGatt gattServer = cache.gatt;
gattServer.disconnect();
if(state == BluetoothProfile.STATE_DISCONNECTED) {
//这里基本上不会到，因为状态还来不及改变
gattServer.close();
mDevices.remove(deviceId);// Only remove it after close
}
}
result.success(null);
break;
}
line 861:
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
log(LogLevel.DEBUG, "[onConnectionStateChange] status: " + status + " newState: " + newState);
if(newState == BluetoothProfile.STATE_DISCONNECTED) {
String deviceId=gatt.getDevice().getAddress()
if(!mDevices.containsKey(deviceId)) {
//这里才是
gatt.close();
mDevices.remove(deviceId);// Only remove it after close
}
}
invokeMethodUIThread(“DeviceState”, ProtoMaker.from(gatt.getDevice(), newState).toByteArray());
}