Want Larger Camera Preview Using Zbar Scanner Library In Android

I am using ZBarScannerActivity in my android app. but I am getting a small surface view on device. Actually I want full Screen camera preview to scan the QR code. Any help would be

Solution 1:

I am getting a small surface view on device. Actually I want full Screen camera preview to scan the QR code

• If you are saying that camera isn't occupying the entire screen then try to change the

  android:layout_width="match_parent"android:layout_height="match_parent"

of SurfaceView and parent_layout

• If it is about the scan area that you want to be in full screen, here it goes:

  mScannerView = newZBarScannerView(this) {
          /**
           * this will alter the scanning area
           **/@Overrideprotected IViewFinder createViewFinderView(Context context) {
              returnnewCustomViewFinderView(context);
          } 
      };
  
  
  
  privateclassCustomViewFinderViewextendsViewFinderView {
      Context context;
  
      publicCustomViewFinderView(Context context) {
          super(context);
          this.context = context;
          setLaserEnabled(true);
      }
  
      @OverridepublicvoidonDraw(Canvas canvas) {
          super.onDraw(canvas);
          if (getFramingRect() != null) {
              updateFrameRect();
              setBorderColor(ContextCompat.getColor(context, R.color.colorPrimary));
          }
      }
  
      privatevoidupdateFrameRect() {
          PointviewResolution=newPoint(this.getWidth(), this.getHeight());
          intheight= (int) ((float) this.getHeight());
          intwidth= (int) ((float) this.getWidth());
  
          intleftOffset= (viewResolution.x - width) / 2;
          inttopOffset= (viewResolution.y - height) / 2;
  
          getFramingRect().left = leftOffset;
          getFramingRect().top = topOffset;
          getFramingRect().right = leftOffset + width;
          getFramingRect().bottom = topOffset + height;
      }
  }
  

Result:

Solution 2:

I have solved this by removing following code from Camerapreview Class

if(mPreviewSize!=null) {
        previewWidth=mPreviewSize.width;previewHeight=mPreviewSize.height;
    }

it worked for me. It will give you full screen camera. Thank you.