I know there\'s a lot of posts with the same that problem. I just spent at least 2 hours to read them and I tried everything I saw in the responses but it still doesn\'t work. I
The simulator sometimes gets stuck and this is the only way I know to reset it. The same thing can happen to the device as well and you just have to switch it off and on again.
If that doesn't work, you may have to reinstall the SDK.