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Android: Draw text to dynamically sized bitmap

/ Published in: Java
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This method draws a specified string to a Bitmap with the desired text width and text size.

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  1. public static Bitmap drawText(String text, int textWidth, int textSize) {
  2. 		// Get text dimensions
  3. 		TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG
  4. 				| Paint.LINEAR_TEXT_FLAG);
  5. 		textPaint.setStyle(Paint.Style.FILL);
  6. 		textPaint.setColor(Color.BLACK);
  7. 		textPaint.setTextSize(textSize);
  8. 		StaticLayout mTextLayout = new StaticLayout(text, textPaint,
  9. 				textWidth, Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
  10.  
  11. 		// Create bitmap and canvas to draw to
  12. 		Bitmap b = Bitmap.createBitmap(textWidth, mTextLayout.getHeight(), Config.RGB_565);
  13. 		Canvas c = new Canvas(b);
  14.  
  15. 		// Draw background
  16. 		Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG
  17. 				| Paint.LINEAR_TEXT_FLAG);
  18. 		paint.setStyle(Paint.Style.FILL);
  19. 		paint.setColor(Color.WHITE);
  20. 		c.drawPaint(paint);
  21.  
  22. 		// Draw text
  23. 		c.save();
  24. 		c.translate(0, 0);
  25. 		mTextLayout.draw(c);
  26. 		c.restore();
  27.  
  28. 		return b;
  29. 	}

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