protected bool ChooseFile(IValueCallback filePathCallback, Intent intent, string title)
{
if (_activity == null)
{
return(false);
}
void callback(Result resultCode, Intent intentData)
{
if (filePathCallback == null)
{
return;
}
var result = ParseResult(resultCode, intentData);
filePathCallback.OnReceiveValue(result);
}
_requestCodes ??= new List <int>();
var newRequestCode = ActivityResultCallbackRegistryHelper.RegisterActivityResultCallback(callback);
_requestCodes.Add(newRequestCode);
#pragma warning disable CA2000 // Dispose objects before losing scope
_activity.StartActivityForResult(Intent.CreateChooser(intent, title), newRequestCode);
#pragma warning restore CA2000 // Dispose objects before losing scope
return(true);
}
public void UnregisterCallbacks()
{
if (_requestCodes == null || _requestCodes.Count == 0 || _activity == null)
{
return;
}
foreach (var requestCode in _requestCodes)
{
ActivityResultCallbackRegistryHelper.UnregisterActivityResultCallback(requestCode);
}
_requestCodes = null;
}