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