二维码生成与扫描,二维码在开发中是非常常用的，本例子写的很明了，包分的很清楚，用的时候只要改变BarCodeTestActivity中的相关代码，其他的包直接复制就行了

来源：互联网发布：网络运营提成方案编辑：程序博客网时间：2024/06/05 05:14

package com.ericssonlabs;import com.google.zxing.WriterException;import com.zxing.activity.CaptureActivity;import com.zxing.encoding.EncodingHandler;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;public class BarCodeTestActivity extends Activity {/** Called when the activity is first created. */private TextView resultTextView;private EditText qrStrEditText;private ImageView qrImgImageView;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        resultTextView = (TextView) this.findViewById(R.id.tv_scan_result);        qrStrEditText = (EditText) this.findViewById(R.id.et_qr_string);qrImgImageView= (ImageView) findViewById( R.id.iv_qr_image );        Button scanBarCodeButton = (Button) this.findViewById(R.id.btn_scan_barcode);        scanBarCodeButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {//打开扫描界面扫描条形码或二维码Intent openCameraIntent = new Intent(BarCodeTestActivity.this,CaptureActivity.class);startActivityForResult(openCameraIntent, 0);}});        Button generateQRCodeButton = (Button) this.findViewById(R.id.btn_add_qrcode);        generateQRCodeButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {try {String contentString = qrStrEditText.getText().toString();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 = EncodingHandler.createQRCode(contentString, 350);qrImgImageView.setImageBitmap(qrCodeBitmap);}else {Toast.makeText(BarCodeTestActivity.this, "Text can not be empty", Toast.LENGTH_SHORT).show();}} catch (WriterException e) {// TODO Auto-generated catch blocke.printStackTrace();}}});    }@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);//处理扫描结果（在界面上显示）if (resultCode == RESULT_OK) {Bundle bundle = data.getExtras();String scanResult = bundle.getString("result");resultTextView.setText(scanResult);}}}

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