Text and Numbers Recognizer 
This library is an easy to implement and use for scanning text and numbers using the camera (Optical Character Recognition) on android devices.
You can view my my app here where i use this library
Implementation
Add jitpack to repositories in the root build.gradle file
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
Add this dependency line in your build.gradle app level
dependencies {
implementation 'com.github.Lucem-Anb:android-text-scanner:@Version'
}
Usage
This library uses the SurfaceView to display the camera. Detected values are accessed using a listener. There are
two ways of using this library, let's start with the simple one
Option 1
Create the ScannerView in your Activity or fragment
<com.lucem.anb.characterscanner.ScannerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/scanner"/>
Start the scan whenever you want
ScannerView scanner = findViewById(R.id.scanner);
scanner.setOnDetectedListener(this, new ScannerListener() {
@Override
public void onDetected(String detections) {
Toast.makeText(MainActivity.this, detections, Toast.LENGTH_SHORT).show();
}
@Override
public void onStateChanged(String state, int i) {
Log.d("state", state);
}
});
Option 2
Create a surface view in your activity or fragment
<SurfaceView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/surface"/>
Initialize your Scanner and pass your activity and surface view
SurfaceView surfaceView = findViewById(R.id.surface);
Scanner scanner = new Scanner(this, surfaceView, new ScannerListener() {
@Override
public void onDetected(String detections) {
Toast.makeText(MainActivity.this, detections, Toast.LENGTH_SHORT).show();
}
@Override
public void onStateChanged(String state, int i) {
Log.d("state", state);
}
});
More Customization
showToasts(boolean); Enable or disable recognition engine alert
getState(); return a String of the current state
onStateChanged(); Called when the scanning state is changed
setScanning(boolean) Start or Stop scanning state