Code Scanner
Code scanner library for Android, based on ZXing
Features
- Auto focus and flash light control
- Portrait and landscape screen orientations
- Back and front facing cameras
- Customizable viewfinder
Supported formats
| 1D product | 1D industrial | 2D |
|---|---|---|
| UPC-A | Code 39 | QR Code |
| UPC-E | Code 93 | Data Matrix |
| EAN-8 | Code 128 | Aztec |
| EAN-13 | Codabar | PDF 417 |
| ITF | MaxiCode | |
| RSS-14 | ||
| RSS-Expanded |
Usage
Add dependency:
dependencies {
implementation 'com.budiyev.android:code-scanner:1.6.1'
}
Add camera permission to AndroidManifest.xml (Don't forget about dynamic permissions on API >= 23):
<uses-permission android:name="android.permission.CAMERA"/>Define a view in your layout file:
<?xml version="1.0" encoding="utf-8"?> <FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.budiyev.android.codescanner.CodeScannerView
android:id="@+id/scanner_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:frameColor="@android:color/white"
app:frameCornersSize="50dp"
app:frameWidth="2dp"
app:maskColor="#77000000"
app:squareFrame="true"
app:autoFocusButtonColor="@android:color/white"
app:flashButtonColor="@android:color/white"
app:autoFocusButtonVisible="true"
app:flashButtonVisible="true"/> </FrameLayout>And add following code to your activity:
public class MainActivity extends AppCompatActivity {
private CodeScanner mCodeScanner;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CodeScannerView scannerView = findViewById(R.id.scanner_view);
// Use builder
mCodeScanner = CodeScanner.builder()
/*camera can be specified by calling .camera(cameraId),
first back-facing camera on the device by default*/
/*code formats*/
.formats(CodeScanner.ALL_FORMATS)/*List<BarcodeFormat>*/
/*or .formats(BarcodeFormat.QR_CODE, BarcodeFormat.DATA_MATRIX, ...)*/
/*or .format(BarcodeFormat.QR_CODE) - only one format*/
/*auto focus*/
.autoFocus(true).autoFocusMode(AutoFocusMode.SAFE).autoFocusInterval(2000L)
/*flash*/
.flash(false)
/*decode callback*/
.onDecoded(new DecodeCallback() {
@Override
public void onDecoded(@NonNull final Result result) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, result.getText(),
Toast.LENGTH_LONG).show();
}
}
);
}
}
)
/*error callback*/
.onError(new ErrorCallback() {
@Override
public void onError(@NonNull final Exception error) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, error.getMessage(),
Toast.LENGTH_LONG).show();
}
}
);
}
}
).build(this, scannerView);
// Or use constructor to create scanner with default parameters
// All parameters can be changed after scanner created
// mCodeScanner = new CodeScanner(this, scannerView);
// mCodeScanner.setDecodeCallback(...);
scannerView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mCodeScanner.startPreview();
}
}
);
}
@Override
protected void onResume() {
super.onResume();
mCodeScanner.startPreview();
}
@Override
protected void onPause() {
mCodeScanner.releaseResources();
super.onPause();
}
}
Preview
