QR coder (Google Vision API)

QRcodersMainSourceCode.java

package com.pattyappier.pattyluvapp.pattysqrcoder.feature;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.google.android.gms.vision.Frame;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;

import org.w3c.dom.Text;

public class MainActivity extends AppCompatActivity {

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

        Button btn = (Button) findViewById(R.id.button);
        btn.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){

            }

        });

        ImageView myImageView = (ImageView) findViewById(R.id.imgview);
        Bitmap myBitmap = BitmapFactory.decodeResource(
                getApplicationContext().getResources(),
                R.drawable.puppy
        );
        myImageView.setImageBitmap(myBitmap);

        BarcodeDetector detector = new BarcodeDetector.Builder(getApplicationContext())
                                                      .setBarcodeFormats(Barcode.DATA_MATRIX | Barcode.QR_CODE)
                                                      .build();
        if(!detector.isOperational()){
            return;
        }

        Frame frame = new Frame.Builder().setBitmap(myBitmap).build();
        SparseArray<Barcode> barcodes = detector.detect(frame);

        Barcode thicCode = barcodes.valueAt(0);
        TextView txtView = (TextView) findViewById(R.id.txtContent);
        txtView.setText(thicCode.rawValue);

    }
}