Question

我如何从地方档案系统(例如EG)所储存的形象中获取一个星号:/sdcard/tets.png<>/code>。

Answer 1

Use the IOUtils.toByteArray. 这是我所知的最容易和安全的方式。宇宙-奥图书馆是个小馆。

与此类似:

FileInputStream fileStream = null;
try {
    fileStream = new FileInputStream("/sdcard/tets.png");
    final byte[] data = IOUtils.toByteArray(fileStream);
    // Do something useful to the data
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} finally {
    IOUtils.closeQuietly(fileStream);
}

Answer 2

审判该法典

public static  byte[] getBytesFromFile(File file) throws IOException {
        InputStream is = new FileInputStream(file);
        long length = file.length();

        if (length > Integer.MAX_VALUE) {
            // File is too large
        }

        byte[] bytes = new byte[(int)length];

        int offset = 0;
        int numRead = 0;
        while (offset < bytes.length && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {

            offset += numRead;
        }

        if (offset < bytes.length) {
            throw new IOException("Could not completely read file "+file.getName());
        }

        is.close();
        return bytes;
    }

友情链接