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Android Barcode Reader library using Google Mobile Vision. This library is built on top of google mobile vision sample adding improvements and fixing few bugs.
dependencies {
// google mobile vision
implementation 'com.google.android.gms:play-services-vision:11.0.2'
// barcode reader
implementation 'info.androidhive:barcode-reader:1.1.5'
}
<fragment
android:id="@+id/barcode_fragment"
android:name="info.androidhive.barcode.BarcodeReader"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:auto_focus="true"
app:use_flash="false" />
BarcodeReader.BarcodeReaderListener and override the necessary methods.public class MainActivity extends AppCompatActivity implements BarcodeReader.BarcodeReaderListener {
private BarcodeReader barcodeReader;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
barcodeReader = (BarcodeReader) getSupportFragmentManager().findFragmentById(R.id.barcode_fragment);
}
@Override
public void onScanned(Barcode barcode) {
// play beep sound
barcodeReader.playBeep();
}
@Override
public void onScannedMultiple(List<Barcode> list) {
}
@Override
public void onBitmapScanned(SparseArray<Barcode> sparseArray) {
}
@Override
public void onScanError(String s) {
}
@Override
public void onCameraPermissionDenied() {
Toast.makeText(getApplicationContext(), "Camera permission denied!", Toast.LENGTH_LONG).show();
}
}
In fragment the barcode reader can be added easily but the scanner listener barcodeReader.setListener() has to
be set manually.
Check the example fragment code in BarcodeFragment.java and BarcodeFragmentTestActivity.java
The overlay animation indicator displays a horizontal line animating from top to bottom. This will be useful to to show some cool animation to indicate scanning progress.
To use it, add the info.androidhive.barcode.ScannerOverlay on top of barcode reader fragment using Relative or Frame layout.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout ...>
<fragment
android:id="@+id/barcode_fragment"
android:name="info.androidhive.barcode.BarcodeReader"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:auto_focus="true"
app:use_flash="false" />
<info.androidhive.barcode.ScannerOverlay
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#44000000"
app:line_color="#7323DC"
app:line_speed="6"
app:line_width="4"
app:square_height="200"
app:square_width="200"/>
</RelativeLayout>
XML attribute for Barcode Reader
auto_focus - boolean, turn on/off auto focus. Default is true
use_flash - boolean, turn on/off flash. Default is false
XML attribute for Scanner Overlay Indicator
square_width - Width of transparent square
square_height - Height of transparent square
line_color - Horizontal line color
line_speed - Horizontal line animation speed
JAVA Methods
You can play the beep sound when the barcode is scanned. This code is usually called in onScanned() callback.
@Override
public void onScanned(final Barcode barcode) {
Log.e(TAG, "onScanned: " + barcode.displayValue);
barcodeReader.playBeep();
});
}
You can change the default beep sound by passing the file name. You beep file should be in project's assets folder.
barcodeReader.setBeepSoundFile("shutter.mp3");
The scanning can be paused by calling pauseScanning() method.
barcodeReader.pauseScanning();
The scanning can be resumed by calling resumeScanning() method.
barcodeReader.resumeScanning();
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