android - Barcode scan on picture from gallery -


A small idea about what steps I want to get in:

  1. Either take an image from the camera or select a picture from the gallery
  2. Load the image of the result in a ImageView (possibly)

    now Between step 1 and step 2, I want to scan barcodes on the image from step 1.

    Based on the results of the scan:

    • If successful, toast
    • if not, then Toast show that there is no barcode in the image.

      I have discovered ZXing (to a lesser extent) to fulfill my goal.

      But what I was not able to do is:

      1. How to scan barcodes on the picture from the gallery?
      2. Scan successfully with barcode content and format information

        I finally got a way of working it with Zxing Barcode Scanner Library.

        While taking pictures from any saved gallery or folder, keep in mind some things,

        • The image should be of good quality.
        • The image should not be rotated. (This sometimes causes the problem).
        • And finally, make sure that barcode scanning is supported by zxing the barcode scanner.

          Here is the code. 

            try {bitmap bMap = bitmapfactory.decodeResource (MyActivity.this.getResources (), R.drawable.barcode_dummy / * no dummy image with barcode * /); int [] intArray = new int [bMap.getWidth () * bMap.getHeight ()]; // Copy copy pixel data from 'bitmap' intere 'array BIMAP.getpixel (intere, 0, bmap, gatewythth), 0, 0, bmapgetwidth (), bmapgatehite ()); LuminanceSource Source = New RGBLuminanceSource (bMap.getWidth), bMap.getHeight (), intArray); Binarybitmap bitmap = new binarybitmap (new hybridbenerizer (source)); Reader Reader = New Multiformat Reader (); // Use it otherwise try // checksum expansion {hashtable & lt; DecodeHintType, Object & gt; DecodeHints = new hashtable & lt; Decodheinttype, object & gt; (); decodeHints.put (decodheinttype.trY_HARDER, boolean.true); decodeHints.put (decodheint typePURE_BARCODE, boolean.true); Result result = reader.decode (bitmap, decoded); Utility. ShortshotShort (MyActivity.This, Results .getText ()); } Catch (NotFoundException e) {e.printStackTrace (); } Catch (checksum expedition e) {e.printStackTrace (); } Hold (Format Expansion E) {e.printStackTrace (); } Hold (NullPointerException e) {e.printStackTrace (); }   
           Hope it helps. This worked for me thanks

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