从assets中读取文本和图片资源

/** 从assets 文件夹中读取文本数据 */
public static String getTextFromAssets(final Context context, String fileName) {
    String result = "";
    try {
        InputStream in = context.getResources().getAssets().open(fileName);
        // 获取文件的字节数
        int lenght = in.available();
        // 创建byte数组
        byte[] buffer = new byte[lenght];
        // 将文件中的数据读到byte数组中
        in.read(buffer);
        result = EncodingUtils.getString(buffer, "UTF-8");
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return result;
}

/** 从assets 文件夹中读取图片 */
public static Drawable loadImageFromAsserts(final Context ctx, String fileName) {
    try {
        InputStream is = ctx.getResources().getAssets().open(fileName);
        return Drawable.createFromStream(is, null);
    } catch (IOException e) {
        if (e != null) {
            e.printStackTrace();
        }
    } catch (OutOfMemoryError e) {
        if (e != null) {
            e.printStackTrace();
        }
    } catch (Exception e) {
        if (e != null) {
            e.printStackTrace();
        }
    }
    return null;
}