/** * resize图片.创建固定宽度的新图片<br /> * 缩小 * * @param src * @param dstWidth * @return Bitmap */ public Bitmap createBitmap(Bitmap src, int dstWidth) throws Exception { Bitmap ret = null; int srcWidth = src.getWidth(); int srcHeight = src.getHeight(); float ratio = ((float) dstWidth) / srcWidth; if (ratio >= 1) return src; int dstHeight = (int) (srcHeight * ratio); ret = Bitmap.createScaledBitmap(src, dstWidth, dstHeight, false); // return return ret; } /** * resize图片.创建固定宽度高度的新图片<br /> * 先缩小后剪切 * * @param src * @param dstWidth * @param dstHeight * @return Bitmap */ public Bitmap createBitmap(Bitmap src, int dstWidth, int dstHeight) { Bitmap ret = null; int srcWidth = src.getWidth(); int srcHeight = src.getHeight(); float ratioX = ((float) dstWidth) / srcWidth; float ratioY = ((float) dstHeight) / srcHeight; float ratio = ratioX > ratioY ? ratioX : ratioY; int orgWidth = (int) (srcWidth * ratio); int orgHeight = (int) (srcHeight * ratio); // 缩小 Bitmap org = Bitmap.createScaledBitmap(src, orgWidth, orgHeight, false); // 剪切 ret = Bitmap.createBitmap(org, 0, 0, dstWidth > orgWidth ? orgWidth : dstWidth, dstHeight > orgHeight ? orgHeight : dstHeight); // return return ret; }
android创建固定宽度,高度的图片,比例缩放
最新推荐文章于 2023-03-14 00:37:24 发布