RxQrCode

When QrCode meets RxJava...

Usage

dependency

allprojects {
    repositories {
        maven {
            url  "http://dl.bintray.com/piasy/maven"
        }
    }
}

compile 'com.github.piasy:RxQrCode:1.3.0'

initialize

Because RxQrCode use CameraCompat for camera scan, you need initialize it:

// initialize in application's onCreate
CameraCompat.init(getApplicationContext());

prebuilt scanner view

Also because RxQrCode use CameraCompat for camera scan, you need add a preview container ViewGroup.

<FrameLayout
        android:id="@+id/mPreviewContainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

<com.github.piasy.rxqrcode.view.HoleContainer
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:outside_color="#b2000000"
        >
    <com.github.piasy.rxqrcode.view.WeChatQrScannerView
            android:layout_width="235dp"
            android:layout_height="235dp"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="110dp"
            app:bar_height="2dp"
            app:bar_margin="10dp"
            app:bar_width="230dp"
            app:moving_bar="@drawable/moving_bar"
            app:moving_speed="5"
            app:side_bg="@drawable/side_bg"
            />
</com.github.piasy.rxqrcode.view.HoleContainer>

scan from camera

Call RxQrCode.scanFromCamera from your onCreate of Activity/Fragment.

Note that you must add getWindow().addFlags(WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) in your Activity's onCreate, otherwise the camera preview may not show.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    RxQrCode.scanFromCamera(savedInstanceState, getActivity().getSupportFragmentManager(),
            R.id.mScannerPreview, this)
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(result -> {
                // you got the scan result
            }, e -> {
                // other error happened, **code not found won't get there**
            });
}

scan from picture

RxQrCode.scanFromPicture(realPath)
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(result -> {
            // you got the result
        }, e -> {
            Toast.makeText(getContext(), "code not found",
                    Toast.LENGTH_SHORT).show();
        });

generate qr code

RxQrCode.generateQrCodeFile(getContext(), "piasy", 200, 200)
        .subscribeOn(Schedulers.computation())
        .subscribe(file -> {
            // you got the qr code image file
        });

scan from camera backpressure problem

Note that scan result from camera will be emitted continuously, you need handle backpressure issue currently, please refer to full example here.

Try demo app

Demo app can be downloaded from https://fir.im/RQR . Thanks for fir.im!