android圖片壓縮

    /**     * 從檔案解析出Bitmap格式的圖片     *      * @param path     * @param maxWidth     * @param maxHeight     * @return     */    public static Bitmap decodeFile(String path, int maxWidth, int maxHeight){        BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        Bitmap image = null;        image = BitmapFactory.decodeFile(path, options);        double ratio = 1D;        if (maxWidth > 0 && maxHeight <= 0) {            // 限定寬度，高度不做限制            ratio = Math.ceil(options.outWidth / maxWidth);        } else if (maxHeight > 0 && maxWidth <= 0) {            // 限定高度，不限制寬度            ratio = Math.ceil(options.outHeight / maxHeight);        } else if (maxWidth > 0 && maxHeight > 0) {            // 高度和寬度都做了限制，這時候我們計算在這個限制內能容納的最大的圖片尺寸，不會使圖片變形            double _widthRatio = Math.ceil(options.outWidth / maxWidth);            double _heightRatio = (double) Math.ceil(options.outHeight / maxHeight);            ratio = _widthRatio > _heightRatio ? _widthRatio : _heightRatio;        }        if (ratio > 1) {            options.inSampleSize = (int) ratio;        }        options.inSampleSize = calcScaleRatio(maxWidth, maxHeight, options.outWidth, options.outHeight);        options.inJustDecodeBounds = false;        options.inPreferredConfig = Bitmap.Config.RGB_565;        image = BitmapFactory.decodeFile(path, options);        return image;    }

android圖片壓縮