Android Integration Guide
The easiest way to integrate DyScan is by using our Nexus repository, which is covered in this guide.
In the project-level
build.gradle
add the Dyneti Maven repository (credentials provided during integration):allprojects {
repositories {
// Other repositories are here
maven {
credentials {
username = "nexusUsername"
password = "nexusPassword"
}
url "https://nexus.dyneti.com/repository/maven-releases/"
authentication {
basic(BasicAuthentication)
}
}
}
}
Default DyScan configuration includes the TensorFlow library. Since version 1.2.0, you can exclude it from DyScan if you prefer to use your own build of TensorFlow.
Default
TensorFlow excluded (DyScan 1.2.0+)
In the app-level
build.gradle
add the dependency:dependencies {
// Other dependencies are here
implementation 'com.dyneti.android.dyscan:dyscan:1.5.1'
}
In the app-level
build.gradle
add the dependency:dependencies {
// Other dependencies are here
implementation ('com.dyneti.android.dyscan:dyscan:1.5.1') {
exclude module: 'tensorflow-lite'
}
implementation 'org.tensorflow:tensorflow-lite:2.1.0'
}
If you would rather integrate without using our Nexus repository, see Manually Importing the Library.
In your
Application
class add the following line to init DyScan
.public class DyScanApplication extends Application {
//...
@Override
public void onCreate() {
super.onCreate();
//...
DyScan.init(this, "{YOUR_API_KEY}");
//...
}
}
By default, DyScan uses
uses-feature
tags in its AndroidManifest.xml
file to filter out devices that don't support the required camera features. This filtering affects the host app's supported device count in Google Play.You can override this filtering by adding the below lines into your
AndroidManifest.xml
manifest tag section:<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
...
<uses-feature android:name="android.hardware.camera" android:required="false" tools:replace="required" />
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false" tools:replace="required" />
...
</manifest>
If you choose to override the default tags settings in
AndroidManifest.xml,
you should additionally check manually if the device is supported before calling DyScan functions to avoid a bad user experience (see below).if (DyScan.isDeviceSupported(context)) {
// open DyScanActivity
Intent intent = new Intent(context, DyScanActivity.class);
startActivityForResult(intent, SCAN_REQUEST_CODE);
} else {
// alternate flow if device is not supported
}
Import the following DyScan classes in your Activity that will launch DyScan:
import com.dyneti.android.dyscan.DyScanActivity;
import com.dyneti.android.dyscan.CreditCard;
This example assumes that you're going to launch the scanner from a button, and that you've set the button's
onClick
handler in the layout XML via android:onClick="onScanPress"
. (If not, the process is analogous, just use the code inside this function). onScanPress
is implemented aspublic void onScanPress(View v) {
Intent scanIntent = new Intent(this, DyScanActivity.class);
// for version lower than 1.1.0
scanIntent.putExtra(DyScanActivity.EXTRA_API_KEY, "{api_key_string}");
// MY_SCAN_REQUEST_CODE (e.g., 1337) is arbitrary and is only used within this activity.
startActivityForResult(scanIntent, MY_SCAN_REQUEST_CODE);
}
Next, override
onActivityResult()
to get the scan result.@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == MY_SCAN_REQUEST_CODE) {
if (data != null && data.hasExtra(DyScanActivity.EXTRA_SCAN_RESULT)) {
CreditCard scanResult = data.getParcelableExtra(DyScanActivity.EXTRA_SCAN_RESULT);
// Do stuff with results in scanResult
}
}
}
The
CreditCard
class contains fields String cardNumber
, int expiryMonth
, int expiryYear
, and boolean isFraud
. For the OCR-only version of DyScan, isFraud
is always set to false, and expiryYear
is the full four-digit year.The DyScanActivity can be customized by passing EXTRAs along with the intent. This allows you to modify both the appearance and behavior of the Activity.
EXTRA | Description | Default Value |
EXTRA_HELPER_TEXT_STRING | What to text to display to the user to guide them in scanning their card. It is highly recommended that you set this value; otherwise we will try to provide this text based on EXTRA_LANGUAGE . | Dependent on EXTRA_LANGUAGE |
EXTRA_HELPER_TEXT_COLOR | The color to use to display the helper text. | Color.WHITE |
EXTRA_HELPER_TEXT_SIZE_SP | The size of the helper text in sp unit. | 18 |
EXTRA_HELPER_TEXT_FONT_FAMILY | The font family name of the helper text. The font needs to be placed in assets first. | Default font |
EXTRA_HELPER_TEXT_POSITION | The position of the helper text. DyScanHelperTextPosition enum values: TOP, CENTER, BOTTOM | DyScanHelperTextPosition.BOTTOM |
EXTRA_SHOW_HELPER_TEXT | Whether to show the helper text on screen. | true |
EXTRA_SHOW_CORNERS | Whether to show the scan area outline | true |
EXTRA_CORNER_THICKNESS | How thick to make the lines outlining the scan area, indicating to the user where to place their credit card. Input as a float. | 15f |
EXTRA_CORNER_INACTIVE_COLOR | The color to use in drawing the outline of the scan region when nothing of interest is detected. | Color.GRAY |
EXTRA_CORNER_ACTIVE_COLOR | The color to use in drawing the outline of the scan region when corners are detected. | Color.CYAN |
EXTRA_CORNER_COMPLETED_COLOR | The color to use in drawing the outline of the scan region when we have successfully scanned a card. | Color.GREEN |
EXTRA_BACKGROUND_COLOR | The color to use to obscure everything outside the scan region in order to draw the user’s attention to the scan region. | Color.GRAY |
EXTRA_BACKGROUND_OPACITY | The opacity to use when obscuring everything outside the scan region, as an integer ranging from 0 (transparent) to 255 (opaque). | 115 |
EXTRA_SHOW_ROTATE_BUTTON | Whether to show the button which allows the user to rotate the scan region by 90 degrees, facilitating the scanning of vertical cards. | false |
EXTRA_SHOW_MANUAL_ENTRY_BUTTON | Whether to show a button at the bottom of the screen allowing the user to choose to exit the scanning Activity. | false |
EXTRA_MANUAL_ENTRY_STRING | The String to display on the manual entry button if shown. This should be set if you are showing the manual entry button. | |
EXTRA_SHOW_RESULT_OVERLAY | Whether to briefly show the scanned card number (and date, if present) as an overlay over the screen after a successful scan. | false |
EXTRA_RESULT_OVERLAY_ALWAYS_HORIZONTAL | Whether to display number on completion horizontally in fixed position. | false |
EXTRA_SHOW_DYNETI_LOGO | Whether to show a dark blue Dyneti logo and wordmark above the scan region. | true |
EXTRA_SHOW_CARD_OVERLAY | Whether to show the overlay displaying a sample card number and expiration date hinting at the user to place their card in the scan region. | true |
EXTRA_LANGUAGE | If EXTRA_HELPER_TEXT_STRING is set, this value is ignored, and setting that value is strongly recommended. Otherwise, when no helper text string is provided, we will attempt to use the inputted ISO 639-1 Code as a String to supply a String ourselves. If we do not have a String for this language code, or no language code is provided, we will fall back to English. | The default locale's language according to the device |
EXTRA_LIGHT_TORCH_WHEN_DARK | Whether the phone will turn on the flashlight if multiple frames have appeared to be too dark. If set to false, torch toggle button will appear. | true |
EXTRA_VIBRATE_ON_COMPLETION | Whether the device will vibrate once it has successfully extracted the credit card data from the images provided by the camera. | true |
EXTRA_CARD_FRAME_CONTENT_DESCRIPTION | The content description of card scan frame. | "Align your card to this frame" |
EXTRA_IS_CHALLENGE | Whether DyScanActivity is being used as a fraud check. This is currently only used for logging purposes, but in the future may impact behavior. | false |
If you want to have more control over the experience than DyScanActivity provides, we also offer a DyScanView.
Last modified 7d ago