CODEWITHSUNDEEP
androidcanvas
Stv. Austin
Stv. Austin

Reputation: 21

Android canvas drawText from right to left

I have an app that handels Arabic too, but my Arabic users have a problem that the drawText flip the word .. Arabic must be from right to left. How do I make the canvas drawText from right to left?

enter image description here

See in the picture the highlighted text is the right text its a textView and it's fine. But the canvas DrawText the one in a circle is wrong. It must be from right to left, how do I make the canvas drawText from right to left?

Upvotes: 1

Views: 3689

Answers (4)

mozhi jafr
mozhi jafr

Reputation: 77

you can get subString from your string and draw in your canvas:

            Paint textPaint = new Paint();
            textPaint.setColor(Color.BLACK);
            textPaint.setStyle(Paint.Style.FILL_AND_STROKE);
            textPaint.setTextSize(20);
            textPaint.setTypeface(Typeface.DEFAULT_BOLD);
            textPaint.setStrokeWidth(1);


            String subString = mString;
            float textWidth = textPaint.measureText(mString);

           int endOffset = Math.round(rectWidth * (mString.length() - 1) / textWidth);
            if (textWidth > rectWidth) {
                endOffset =endOffset - 2;
                subString = mString.substring(0, endOffset);
                subString = subString + "..";
            }else{
                for(int j=mString.length();j<endOffset+1;j++){
                    subString+=" ";
                }
            }


            canvas.drawText(subString, padding , (float) (startHeight + eachHeight / 3 + textPaint.getTextSize() / 1.5), textPaint);

in this way we have a same result even in RTL or LTR string .

Upvotes: 1

Misagh Aghakhani
Misagh Aghakhani

Reputation: 1023

If your target device is api level greater than 11 you can use rotateY=180 attribute in TextView element. Also the parent view should set to rotateY = 180.

Upvotes: -1

ayyad
ayyad

Reputation: 11

Make sure that Android emulator that contains the Arabic language, I had the same problem but when I tried the application on an actual mobile device,It solved. There are no problems in your application in the language, make sure Android emulator supports the Arabic language

Upvotes: 1

RajaReddy PolamReddy
RajaReddy PolamReddy

Reputation: 22493

On the canvas just create two points on sides where you want to draw text, and then create path between them. use this method it will work fine

Path path = new Path();
Paint paint = new Paint();
path.moveTo(p2.x, p2.y);
path.lineTo(p1.x, p1.y);
canvas.drawTextOnPath(String.valueOf(txt), path, (float) (c.getWidth() / (2.3)),  (float) (c.getHeight()/2 + paint.getTextSize()/1.5), paint);

Upvotes: 1

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