(Android) This utilisty class provides a method to render a Gesture into a bitmap, with a custom stroke size.

gistfile1.java

/*
 * Copyright (C) 2008-2009 The Android Open Source Project
 * Copyright (C) 2012 Régis Décamps
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import android.gesture.Gesture;
import android.gesture.GestureStroke;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;

public class GestureUtil {
  private static final boolean BITMAP_RENDERING_ANTIALIAS = true;
	private static final boolean BITMAP_RENDERING_DITHER = true;
	private static final float BITMAP_RENDERING_WIDTH = 10;
	private static final int NUM_SAMPLES = 20;

	public static Bitmap toBitmap(Gesture gesture, int color, float strokeWidth) {
		RectF bounds = gesture.getBoundingBox();
		int width=(int)bounds.width();
		int height=(int)bounds.height();
	        final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
	        final Canvas canvas = new Canvas(bitmap);
	        
	        int edge=0;
	        //canvas.translate(edge, edge);

	        final Paint paint = new Paint();
	        paint.setAntiAlias(BITMAP_RENDERING_ANTIALIAS);
	        paint.setDither(BITMAP_RENDERING_DITHER);
	        paint.setColor(color);
	        paint.setStyle(Paint.Style.STROKE);
	        paint.setStrokeJoin(Paint.Join.ROUND);
	        paint.setStrokeCap(Paint.Cap.ROUND);
	        paint.setStrokeWidth(BITMAP_RENDERING_WIDTH);

	        final ArrayList<GestureStroke> strokes = gesture.getStrokes();
	        final int count = strokes.size();

	        for (int i = 0; i < count; i++) {
	            Path path = strokes.get(i).toPath(width - 2 * edge, height - 2 * edge, NUM_SAMPLES);
	            canvas.drawPath(path, paint);
	        }

	        return bitmap;
	    }
}