1 public Bitmap zoomImage(Bitmap bgimage, double newWidth,
2 double newHeight) {
3 // 获取这个图片的宽和高
4 float width = bgimage.getWidth();
5 float height = bgimage.getHeight();
6 // 创建操作图片用的matrix对象
7 Matrix matrix = new Matrix();
8 // 计算宽高缩放率
9 float scaleWidth = ((float) newWidth) / width;
10 float scaleHeight = ((float) newHeight) / height;
11 // 缩放图片动作
12 matrix.postScale(scaleWidth, scaleHeight);
13 Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width,
14 (int) height, matrix, true);
15 return bitmap;
16 }
