hi so I have this project that I want to generate a ITF-14 bar code using the ZXING lib.
Ok so I got it to produce the bar code but I have to manually write the numbers into a text view to display the number. I want the number to be generated with the bitmap but I don't know how to do that.
I want to generate something that looks like this:
But what I get is just the barcode with no numbers under it. I maybe missing an option with the zxing libs.
So here is my code that I have so far:
import android.graphics.Bitmap;
import android.media.Image;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import java.util.EnumMap;
import java.util.Map;
import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
public class LoginPage extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_page);
String barCodeData = "123456";
Bitmap barcode = null;
Bitmap b2 = null;
ImageView imageview = (ImageView)findViewById(R.id.barcode);
TextView num = (TextView)findViewById(R.id.number);
try{
barcode = encodeAsBitmap(barCodeData, BarcodeFormat.CODE_128, 600, 300);
//this works
b2 = encodeAsBitmap(barCodeData, BarcodeFormat.ITF, 600, 300);
//this also work but makes the same thing?
imageview.setImageBitmap(b2);
num.setText(barCodeData);
}catch (WriterException e)
{
Log.d("Barcode Generation"," Failed to create");
}
}
private static final int WHITE = 0xFFFFFFFF;
private static final int BLACK = 0xFF000000;
Bitmap encodeAsBitmap(String contents, BarcodeFormat format, int img_width, int img_height) throws WriterException {
String contentsToEncode = contents;
if (contentsToEncode == null) {
return null;
}
Map<EncodeHintType, Object> hints = null;
String encoding = guessAppropriateEncoding(contentsToEncode);
if (encoding != null) {
hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
hints.put(EncodeHintType.CHARACTER_SET, encoding);
}
MultiFormatWriter writer = new MultiFormatWriter();
BitMatrix result;
try {
result = writer.encode(contentsToEncode, format, img_width, img_height, hints);
} catch (IllegalArgumentException iae) {
// Unsupported format
return null;
}
int width = result.getWidth();
int height = result.getHeight();
int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
}
}
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
private static String guessAppropriateEncoding(CharSequence contents) {
// Very crude at the moment
for (int i = 0; i < contents.length(); i++) {
if (contents.charAt(i) > 0xFF) {
return "UTF-8";
}
}
return null;
}
}
User contributions licensed under CC BY-SA 3.0