Binary Eye

Yet another barcode scanner for Android. As if there weren't enough.

This one is free, without any ads and open source.

Works in portrait and landscape orientation, can read inverted codes, comes in Material Design and can also generate barcodes.

Binary Eye uses the ZXing ("Zebra Crossing") barcode scanning library.

Screenshots

Download

Supported Barcode Formats

Read

ZXing can read the following barcode formats:

AZTEC
CODABAR
CODE 39
CODE 93
CODE 128
DATA MATRIX
EAN 8
EAN 13
ITF
MAXICODE (only when unrotated and unskewed, see 77, because of which Binary Eye cannot read this barcode)
PDF417
QR CODE
RSS 14
RSS EXPANDED
UPC A
UPC E
UPC EAN EXTENSION

Generate

ZXing can generate the following barcode formats:

Deep Links and Intents

Deep Links

You can invoke Binary Eye with a web URI intent from anything that can open URIs. There are two options:

binaryeye://scan
http(s)://markusfisch.de/BinaryEye

If you want to get the scanned contents, you can add a ret query argument with a (URL encoded) URI template. For example:

http://markusfisch.de/BinaryEye?ret=http%3A%2F%2Fexample.com%2F%3Fresult%3D{RESULT}

Supported symbols are:

RESULT - scanned content
RESULT_BYTES - raw result as a hex string
FORMAT - barcode format
META - the meta data, if available

SCAN Intent

You can also use Binary Eye from other apps by using the com.google.zxing.client.android.SCAN Intent with startActivityForResult() like this:

startActivityForResult(
	Intent("com.google.zxing.client.android.SCAN"),
	SOME_NUMBER
)

And process the result in onActivityResult() of your Activity:

override fun onActivityResult(
	requestCode: Int,
	resultCode: Int,
	data: Intent?
) {
	when (requestCode) {
		SOME_NUMBER -> if (resultCode == RESULT_OK) {
			val result = data.getStringExtra("SCAN_RESULT")
			…
		}
	}
}

RenderScript

This app uses RenderScript to resize and rotate the camera image. Unfortunately, RenderScript has some nasty gotchas.

RenderScript.forceCompat()

It's necessary to call RenderScript.forceCompat() on some devices/roms.

RenderScript.forceCompat() needs to be run before any other RenderScript function and unfortunately there is no way to know if invoking forceCompat() is necessary or not.

If RenderScript.forceCompat() is necessary, a RSRuntimeException will be thrown and the only option is to restart the app, this time with calling forceCompat() first.

Calling RenderScript.forceCompat() means the processing is done in software so you probably don't want to enable it by default.

2D barcodes

If you want to fork this and are only interested in reading 2D barcodes (like QR or Aztec), you may want to remove the custom rotation kernel altogether as ZXing can read 2D barcodes in any orientation.

This will make your app a bit simpler and saves you from compiling a custom RenderScript kernel for each architecture you want to support.

mdemori/BinaryEye