Essential Android Reading Barcode and QR codes edit forum

Using QRCodeReaderView based on Zxing

QRCodeReaderView implements an Android view which show camera and notify when there’s a QR code inside the preview.

It uses the zxing open-source, multi-format 1D/2D barcode image processing library.

Adding the library to your project

Add QRCodeReaderView dependency to your build.gradle

dependencies{
    compile 'com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.0'
}

First use

<com.dlazaro66.qrcodereaderview.QRCodeReaderView
       android:id="@+id/qrdecoderview"
       android:layout_width="match_parent"
       android:layout_height="match_parent" />

Then in your Activity, you can use it as follows:

public class DecoderActivity extends Activity implements OnQRCodeReadListener {

private TextView resultTextView;
private QRCodeReaderView qrCodeReaderView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_decoder);

    qrCodeReaderView = (QRCodeReaderView) findViewById(R.id.qrdecoderview);
    qrCodeReaderView.setOnQRCodeReadListener(this);

    // Use this function to enable/disable decoding
    qrCodeReaderView.setQRDecodingEnabled(true);

    // Use this function to change the autofocus interval (default is 5 secs)
    qrCodeReaderView.setAutofocusInterval(2000L);

    // Use this function to enable/disable Torch
    qrCodeReaderView.setTorchEnabled(true);

    // Use this function to set front camera preview
    qrCodeReaderView.setFrontCamera();

    // Use this function to set back camera preview
    qrCodeReaderView.setBackCamera();
}

// Called when a QR is decoded
// "text" : the text encoded in QR
// "points" : points where QR control points are placed in View
@Override
public void onQRCodeRead(String text, PointF[] points) {
    resultTextView.setText(text);
}

@Override
protected void onResume() {
    super.onResume();
    qrCodeReaderView.startCamera();
}

@Override
protected void onPause() {
    super.onPause();
    qrCodeReaderView.stopCamera();
}
}

Table Of Contents
39 ACRA
64 Menu
112 Loader
119 Xposed
132 Colors
135 Fresco
140 AdMob
147 Button
156 Vk SDK
159 Reading Barcode and QR codes
170 XMPP
176 OpenCV
200 FileIO
203 Moshi
217 Paint
231 AIDL
241 JCodec
243 Okio
255 Looper
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