Camera Preview Size Hardcoded

[copperstick6]

In Line 211 of Main Activity.js, there's a hardcoded value for setting the camera size. We think this is causing a lot of crashes with devices which do not support said resolution. A recommended solution is to grab the device's size and set that as the size of the preview size. This would remove the error.

mCameraSource = new CameraSource.Builder(this, barcodeDetector)     
                .setFacing(CameraSource.CAMERA_FACING_BACK)    
                .setRequestedPreviewSize(1600, 1024)     
                .build();     
    } 

[ThomasGaubert]

For what it's worth: https://developers.google.com/android/reference/com/google/android/gms/vision/CameraSource.Builder#public-methods

If the exact desired values are not available options, the best matching available options are selected.

[copperstick6]

Thanks Thomas! I'm pinging Lucy about the sizes of the devices that we're planning to use at this year's event so that we can build around that. Changing this from bug to enhancement since it's not causing immediate issues when I create a build with a device with those dimensions.