BitmapUtils.java 文件源码

public static Bitmap getScaleBitmap(Context context, String imagePath,
        int maxWidth) {
    try {
        Options bitmapOptions = new Options();
        bitmapOptions.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(imagePath, bitmapOptions);
        int imageWidth = bitmapOptions.outWidth;

        if (maxWidth == 0) {
            maxWidth = DevUtils.getScreenWidth(context);
        } else if (maxWidth < 0) {
            maxWidth = imageWidth;
        }

        if (imageWidth < maxWidth) {
            maxWidth = imageWidth;
        }

        Bitmap bitmap = createScaleBitmapByWidthIfNeed(imagePath, maxWidth);
        return bitmap;
    } catch (OutOfMemoryError e) {
        Log.e("BitmapUtils", "compressBitmap", e);
        return null;
    }
}