UITextView被阻止因为外围设备：didUpdateValueForCharacteristic：被调用非常快

Question

我试图通过附加来自peripheral:didUpdateValueForCharacteristic:error:的数据来在UITextView中显示数据。在这种情况下，peripheral:didUpdateValueForCharacteristic:error:被频繁调用，因为UITextView（self.responseTextView）无法打印任何数据或阻止用户界面。

- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
    if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:UNKNOWN3_CHARACTERISTICS]]) 
   {
        NSData *data = characteristic.value;
        NSString *stringFromData = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        self.responseTextView.text = [self.responseTextView.text stringByAppendingString:stringFromData];
        NSLog(@"%@",stringFromData);
    }
}