me.dm7.barcodescanner:zxing nueva actividad libreria barcode scanner

SimpleScannerActivity.java

package com.software3000.s3000.appludopataslinktek;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.Toast;
import android.widget.ToggleButton;

import com.google.zxing.Result;

import me.dm7.barcodescanner.zxing.ZXingScannerView;

public class SimpleScannerActivity extends AppCompatActivity
        implements ZXingScannerView.ResultHandler{
    private ZXingScannerView mScannerView;
    @Override
    public void onCreate(Bundle state) {
        super.onCreate(state);
//        setContentView(R.layout.activity_simple_scanner);
//        mScannerView = new ZXingScannerView(this);   // Programmatically initialize the scanner view
//        setContentView(mScannerView);                // Set the scanner view as the content view


        FrameLayout frameLayout = new FrameLayout(this);
        frameLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

        mScannerView = new ZXingScannerView(this);
        final ToggleButton scanButton= new ToggleButton(this);

        FrameLayout params = new FrameLayout(this);
//        frameLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));

        scanButton.setBackground(getResources().getDrawable(R.drawable.ic_flash_off_black_24dp));

        scanButton.setWidth('0');
        scanButton.setHeight(10);


        scanButton.setTextOff("");
        scanButton.setTextOn("");

        LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        p.weight = 1;

        scanButton.setLayoutParams(p);

        frameLayout.addView(mScannerView );
        scanButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (scanButton.isChecked()){
                    scanButton.setBackground(getResources().getDrawable(R.drawable.ic_flash_on_black_24dp));
                }else {

                    scanButton.setBackground(getResources().getDrawable(R.drawable.ic_flash_off_black_24dp));
                }

                scanButton.setChecked(scanButton.isChecked());
                mScannerView.setFlash(scanButton.isChecked());
            }
        });
        frameLayout.addView(scanButton);
        setContentView(frameLayout );
    }

    @Override
    public void onResume() {
        super.onResume();
        mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.
        mScannerView.startCamera();          // Start camera on resume
        mScannerView.setAutoFocus(true);
    }

    @Override
    public void onPause() {
        super.onPause();
        mScannerView.stopCamera();           // Stop camera on pause
    }

    @Override
    public void handleResult(Result rawResult) {
        // Do something with the result here

        Toast.makeText(this, rawResult.getText(), Toast.LENGTH_SHORT).show();
        // If you would like to resume scanning, call this method below:
        mScannerView.resumeCameraPreview(this);
        BusquerdaDniActivity.edtdni.setText(rawResult.getText());
        onBackPressed();
    }
}