Customized camera view & rotation in Zxing for QR code?

Question

I am working with such a great library zxing to read QR code. I already got QR code successfully.

Now, My application runs in landscape mode and camera takes the whole screen and red QR detection rectangle box is in the middle. I wanna change this to portrait mode & replace the camera view only with the red QR detection rectangle box.

I change CaptureActivity tag which is inside the zxing library manifest file.

android:screenOrientation="portrait".

But found nothing what I actually want. I don't know where I have to change/write code to get this.

Answer 1

I was in same problem and got stuck about 2 days on it. Actually you have to do some tasks to achieve your goal.

1. Download Zxing library for read QR code.. (Hope you have already)
2. Create a project and add Zxing library.

3. Your main.xml file should look like:

   <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:orientation="vertical" >
   
   <TextView
       android:layout_width="fill_parent"
       android:layout_height="wrap_content"
       android:text="@string/hello" />
   
   <FrameLayout
   android:layout_width="fill_parent" 
   android:layout_height="fill_parent" 
   android:layout_gravity="center_horizontal">
       <include layout="@layout/capture"/>
   </FrameLayout>
   
   </LinearLayout>
   

4. Your main Activity should look like:

    public class ScannerActivity extends CaptureActivity {
   
           @Override
           public void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);
               setContentView(R.layout.main);
   
           }
   
           @Override 
           public void handleDecode(Result rawResult, Bitmap barcode) 
           {
      Toast.makeText(this.getApplicationContext(), "Scanned code " + rawResult.getText(), Toast.LENGTH_LONG).show();
           }
       }
   

5. In the manifest file add permission following:

    <uses-permission android:name="android.permission.CAMERA"/>
   

6. and finally very IMPORTANT task you need to do for camera rotation problem, replace the following method into the

CameraManager.java (in the package com.google.zxing.client.android.camera)

@SuppressLint("NewApi") public void startPreview() {
    Camera theCamera = camera;
    if (theCamera != null && !previewing) {
        theCamera.setDisplayOrientation(90);
      theCamera.startPreview();
      previewing = true;
    }
  }

that's all . run and enjoy :-)

thanks..