BitmapUtil.java 文件源码

/**
 * 压缩收藏表情，最大边压到150
 */
public static Bitmap getFaceBitmapFronPath(Context context, String filePath)
        throws FileNotFoundException {
    if (null == filePath) {
        return null;
    }

    Options options = new Options();
    options.inJustDecodeBounds = true;
    Bitmap temp = BitmapFactory.decodeFile(filePath, options);
    options.inJustDecodeBounds = false;
    int actualWidth = options.outWidth;
    int actualHeight = options.outHeight;
    int desiredWidth = actualWidth;
    int desiredHeight = actualHeight;
    if (actualWidth > 150 && actualHeight > 150) {
        if (actualWidth > actualHeight) {
            desiredWidth = (int) (actualWidth * ((150 *1.0) / actualHeight));
            desiredHeight = 150;
        } else {
            desiredHeight = (int) (actualHeight * ((150 *1.0)/ actualWidth));
            desiredWidth = 150;
        }
    }
    options.inSampleSize = findBestSampleSize(actualWidth, actualHeight,
            desiredWidth, desiredHeight);
    temp = BitmapFactory.decodeFile(filePath, options);
    temp = Bitmap.createScaledBitmap(temp, desiredWidth,
            desiredHeight, true);
    return temp;
}