Android扫描二维码

代码说明：

二维码扫描显示输入的内容package com.activity;import android.content.Intent;import android.graphics.Bitmap;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import com.google.zxing.WriterException;import com.google.zxing.activity.CaptureActivity;import com.google.zxing.encoding.EncodingHandler;import com.qrcodescan.R;import com.utils.CommonUtil;import butterknife.BindView;import butterknife.ButterKnife;import butterknife.OnClick;public class MainActivity extends AppCompatActivity {    @BindView(R.id.openQrCodeScan)    Button openQrCodeScan;    @BindView(R.id.text)    Ed