生成 扫描二维码

MainActivity.Java

//http://blog.csdn.net/zhengxiaoyao0716/article/details/50129437

public class ZxingActivity extends Activity {

    private TextView textView;

    private ImageView qrImgImageView ;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_zxing);

        //打开扫描界面扫描条形码或二维码

        textView = (TextView) findViewById(R.id.result_button_view);

        qrImgImageView = (ImageView)findViewById(R.id.gen_id);

    }

    //扫描二维码

    public void scannner(View view){

        Intent openCameraIntent = new Intent(this, CaptureActivity.class);

        startActivityForResult(openCameraIntent, 0);

    }

//生成二维码

    public void gener_pic(View view){

        String contentString = "11111";

        if (!contentString.equals("")) {

            //根据字符串生成二维码图片并显示在界面上，第二个参数为图片的大小（350*350）

            Bitmap qrCodeBitmap = EncodingUtils.createQRCode(contentString, 350, 350,

                            BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));

            qrImgImageView.setImageBitmap(qrCodeBitmap);

        }

    }

    @Override

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == RESULT_OK) {

            Bundle bundle = data.getExtras();

            String scanResult = bundle.getString("result");

            textView.setText(scanResult);

        }

    }

}