Switch camera during scanning

[m1ga]

When I set my camera to either front or back before starting it the first time like this

if (useFrontCamera){
  mydecoderview.setFrontCamera();
} else {
  mydecoderview.setBackCamera();
}
mydecoderview.setQRDecodingEnabled(true);
mydecoderview.startCamera();

I can set it to either one of them. But when I have the preview running and want to switch the camera with:

mydecoderview.stopCamera();
mydecoderview.setFrontCamera();
mydecoderview.startCamera();

it still uses the old camera direction and the points seem to be flipped (QR code at the bottom -> found dots at the top).

How can I switch cameras during preview?

[qingmei2]

I also encountered the same problem，waiting for the suggestion.

[qingmei2]

My solution,insert code at "QRCodeReaderView.java":

`
public void switchCameraFace() {
releaseCamera();
//"face" means your scanning camera face
face = face == Camera.CameraInfo.CAMERA_FACING_FRONT ? Camera.CameraInfo.CAMERA_FACING_BACK : Camera.CameraInfo.CAMERA_FACING_FRONT;
openCamera(face);
}

private void openCamera(int cameraFace) {
    try {
        mCameraManager.setPreviewCameraId(cameraFace);
        mCameraManager.openDriver(getHolder(), this.getWidth(), this.getHeight());
        mCameraManager.setDisplayOrientation(getCameraDisplayOrientation());
        mCameraManager.startPreview();
        mCameraManager.setPreviewCallback(this);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

private void releaseCamera() {
    mCameraManager.setPreviewCallback(null);
    mCameraManager.stopPreview();
    mCameraManager.closeDriver();
}`

and you just need use this code to switch Camera during scanning :
mQRCodeReaderView.switchCameraFace();

[shakour610]

thank you so much for your help Envoyé à partir d’Outlook<http://aka.ms/weboutlook>

…

________________________________ De : 清梅 <notifications@github.com> Envoyé : jeudi 4 mai 2017 04:36 À : dlazaro66/QRCodeReaderView Cc : Subscribed Objet : Re: [dlazaro66/QRCodeReaderView] Switch camera during scanning (#110) My solution,insert code at "QRCodeReaderView.java": ` public void switchCameraFace() { releaseCamera(); //"face" means your scanning camera face face = face == Camera.CameraInfo.CAMERA_FACING_FRONT ? Camera.CameraInfo.CAMERA_FACING_BACK : Camera.CameraInfo.CAMERA_FACING_FRONT; openCamera(face); } private void openCamera(int cameraFace) { try { mCameraManager.setPreviewCameraId(cameraFace); mCameraManager.openDriver(getHolder(), this.getWidth(), this.getHeight()); mCameraManager.setDisplayOrientation(getCameraDisplayOrientation()); mCameraManager.startPreview(); mCameraManager.setPreviewCallback(this); } catch (Exception e) { e.printStackTrace(); } } private void releaseCamera() { mCameraManager.setPreviewCallback(null); mCameraManager.stopPreview(); mCameraManager.closeDriver(); }` and you just need use this code to switch Camera during scanning : mScannerView.switchCameraFace(); — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#110 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/ASw38Gr1Heft7AxvSxewKpVprXRmBLvYks5r2UeygaJpZM4Mg_Cw>.