Print Arabic Characters In Android Thermal Printer

Printer is GoojPRT portable printer PT-210 (thermal printer) the same code is work on another thermal printer POS but not work on this printer for Arabic characters the English cha

Solution 1:

Try to add ISO-8859-6 encode for arabic text.

Solution 2:

I had the same problem, after two days of searching, I found out that, the simple way to print a multilingual text like Arabic is to draw it on a canvas and print it as a normal image, as shown here :

public Bitmap getMultiLangTextAsImage(String text, Paint.Align align, float textSize, Typeface typeface)  {


    Paintpaint=newPaint();

    paint.setAntiAlias(true);
    paint.setColor(Color.BLACK);
    paint.setTextSize(textSize);
    if (typeface != null) paint.setTypeface(typeface);

    // A real printlabel width (pixel)floatxWidth=385;

    // A height per text line (pixel)floatxHeight= textSize + 5;

    // it can be changed if the align's value is CENTER or RIGHTfloatxPos=0f;

    // If the original string data's length is over the width of print label,// or '\n' character included,// it will be increased per line gerneating.floatyPos=27f;

    // If the original string data's length is over the width of print label,// or '\n' character included,// each lines splitted from the original string are added in this list// 'PrintData' class has 3 members, x, y, and splitted string data.
    List<PrintData> printDataList = newArrayList<PrintData>();

    // if '\n' character included in the original string
    String[] tmpSplitList = text.split("\\n");
    for (inti=0; i <= tmpSplitList.length - 1; i++) {
        StringtmpString= tmpSplitList[i];

        // calculate a width in each split string item.floatwidthOfString= paint.measureText(tmpString);

        // If the each split string item's length is over the width of print label,if (widthOfString > xWidth) {
            StringlastString= tmpString;
            while (!lastString.isEmpty()) {

                StringtmpSubString="";

                // retrieve repeatedly until each split string item's length is// under the width of print labelwhile (widthOfString > xWidth) {
                    if (tmpSubString.isEmpty())
                        tmpSubString = lastString.substring(0, lastString.length() - 1);
                    elsetmpSubString= tmpSubString.substring(0, tmpSubString.length() - 1);

                    widthOfString = paint.measureText(tmpSubString);
                }

                // this each split string item is finally done.if (tmpSubString.isEmpty()) {
                    // this last string to print is need to adjust alignif (align == Paint.Align.CENTER) {
                        if (widthOfString < xWidth) {
                            xPos = ((xWidth - widthOfString) / 2);
                        }
                    } elseif (align == Paint.Align.RIGHT) {
                        if (widthOfString < xWidth) {
                            xPos = xWidth - widthOfString;
                        }
                    }
                    printDataList.add(newPrintData(xPos, yPos, lastString));
                    lastString = "";
                } else {
                    // When this logic is reached out here, it means,// it's not necessary to calculate the x position// 'cause this string line's width is almost the same// with the width of print label
                    printDataList.add(newPrintData(0f, yPos, tmpSubString));

                    // It means line is needed to increase
                    yPos += 27;
                    xHeight += 30;

                    lastString = lastString.replaceFirst(tmpSubString, "");
                    widthOfString = paint.measureText(lastString);
                }
            }
        } else {
            // This split string item's length is// under the width of print label already at first.if (align == Paint.Align.CENTER) {
                if (widthOfString < xWidth) {
                    xPos = ((xWidth - widthOfString) / 2);
                }
            } elseif (align == Paint.Align.RIGHT) {
                if (widthOfString < xWidth) {
                    xPos = xWidth - widthOfString;
                }
            }
            printDataList.add(newPrintData(xPos, yPos, tmpString));
        }

        if (i != tmpSplitList.length - 1) {
            // It means the line is needed to increase
            yPos += 27;
            xHeight += 30;
        }
    }

    // If you want to print the text bold//paint.setTypeface(Typeface.create(null as String?, Typeface.BOLD))// create bitmap by calculated width and height as upper.Bitmapbm= Bitmap.createBitmap((int) xWidth, (int) xHeight, Bitmap.Config.ARGB_8888);
    Canvascanvas=newCanvas(bm);
    canvas.drawColor(Color.WHITE);

    for (PrintData tmpItem : printDataList)
        canvas.drawText(tmpItem.text, tmpItem.xPos, tmpItem.yPos, paint);


    return bm;
}

staticclassPrintData {
    float xPos;
    float yPos;
    String text;

    publicPrintData(float xPos, float yPos, String text) {
        this.xPos = xPos;
        this.yPos = yPos;
        this.text = text;
    }

    publicfloatgetxPos() {
        return xPos;
    }

    publicvoidsetxPos(float xPos) {
        this.xPos = xPos;
    }

    publicfloatgetyPos() {
        return yPos;
    }

    publicvoidsetyPos(float yPos) {
        this.yPos = yPos;
    }

    public String getText() {
        return text;
    }

    publicvoidsetText(String text) {
        this.text = text;
    }
}

If you want more details, check this