基于ZXing Android实现生成二维码图片和相机扫描二维码图片即时解码的功能

NextQRCode ZXing开源库的精简版

基于ZXing Android实现生成二维码图片和相机扫描二维码图片即时解码的功能 原文博客 附源码下载地址

与原ZXingMini项目对比

NextQRCode做了重大架构修改，原ZXingMini项目与当前NextQRCode不兼容

	
	

		dependencies {
	

	

		 compile 'com.github.yoojia:next-qrcode:2.0-2'
	

	

		 ...
	

	

		}
	

生成二维码图案

	
	

		// 二维码中间图标
	

	

		final Bitmap centerImage = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
	

	

		// 生成的二维码图案
	

	

		Bitmap qrCodeImage = new QRCodeEncoder.Builder()
	

	

		 .width(size) // 二维码图案的宽度
	

	

		 .height(size)
	

	

		 .paddingPx(0) // 二维码的内边距
	

	

		 .marginPt(3) // 二维码的外边距
	

	

		 .centerImage(centerImage) // 二维码中间图标
	

	

		 .build()
	

	

		 .encode(content);
	

二维码解码

	
	

		final QRCodeDecoder mDecoder = new QRCodeDecoder.Builder().build();
	

	

		// 传入二维码图案Bitmap对象然后解码成文本内容
	

	

		String content = mDecoder.decode(bitmap);
	

使用 LiveCameraView 自动扫描解码

	
	

		public class QRCodeScanActivity extends AppCompatActivity {
	

	

		
	

	

		 public static final String TAG = QRCodeScanActivity.class.getSimpleName();
	

	

		
	

	

		 private LiveCameraView mLiveCameraView;
	

	

		 private ImageView mCaptureImage;
	

	

		 private TextView mContentView;
	

	

		
	

	

		 private final CaptureCallback mCaptureCallback = new CaptureCallback() {
	

	

		 @Override public void onCaptured(Bitmap bitmap) {
	

	

		 Log.i(TAG, "-> Got bitmap, show to capture view");
	

	

		 mCaptureImage.setImageBitmap(bitmap);
	

	

		 Observable.just(bitmap)
	

	

		 .map(new Func1<Bitmap, String>() {
	

	

		 private final QRCodeDecoder mDecoder = new QRCodeDecoder.Builder().build();
	

	

		 @Override
	

	

		 public String call(Bitmap bitmap) {
	

	

		 return mDecoder.decode(bitmap);
	

	

		 }
	

	

		 })
	

	

		 .subscribeOn(Schedulers.computation())
	

	

		 .observeOn(AndroidSchedulers.mainThread())
	

	

		 .subscribe(new Action1<String>() {
	

	

		 @Override public void call(String content) {
	

	

		 mContentView.setText(content);
	

	

		 }
	

	

		 });
	

	

		 }
	

	

		 };
	

	

		
	

	

		 @Override
	

	

		 protected void onCreate(Bundle savedInstanceState) {
	

	

		 super.onCreate(savedInstanceState);
	

	

		 Window window = getWindow();
	

	

		 window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
	

	

		 setContentView(R.layout.activity_scan);
	

	

		 mCaptureImage = (ImageView) findViewById(R.id.capture_image);
	

	

		 mContentView = (TextView) findViewById(R.id.content);
	

	

		 mLiveCameraView = (LiveCameraView) findViewById(R.id.capture_preview_view);
	

	

		 mLiveCameraView.setPreviewReadyCallback(new CameraPreviewView.PreviewReadyCallback() {
	

	

		 @Override
	

	

		 public void onStarted(Camera camera) {
	

	

		 Log.i(TAG, "-> Camera started, start to auto capture");
	

	

		 mLiveCameraView.startAutoCapture(1500, mCaptureCallback);
	

	

		 }
	

	

		
	

	

		 @Override
	

	

		 public void onStopped() {
	

	

		 Log.i(TAG, "-> Camera stopped");
	

	

		 mLiveCameraView.stopAutoCapture();
	

	

		 }
	

	

		 });
	

	

		 }
	

	

		
	

	

		}
	

基于ZXing Android实现生成二维码图片和相机扫描二维码图片即时解码的功能 原文博客 附源码下载地址