Copy files from a folder of SD card into another folder of SD card

Is it possible to copy a folder present in sdcard to another folder present the same sdcard programmatically ??

If so, how to do 开发者_如何学Cthat?

An improved version of that example:

// If targetLocation does not exist, it will be created.
public void copyDirectory(File sourceLocation , File targetLocation)
throws IOException {

    if (sourceLocation.isDirectory()) {
        if (!targetLocation.exists() && !targetLocation.mkdirs()) {
            throw new IOException("Cannot create dir " + targetLocation.getAbsolutePath());
        }

        String[] children = sourceLocation.list();
        for (int i=0; i<children.length; i++) {
            copyDirectory(new File(sourceLocation, children[i]),
                    new File(targetLocation, children[i]));
        }
    } else {

        // make sure the directory we plan to store the recording in exists
        File directory = targetLocation.getParentFile();
        if (directory != null && !directory.exists() && !directory.mkdirs()) {
            throw new IOException("Cannot create dir " + directory.getAbsolutePath());
        }

        InputStream in = new FileInputStream(sourceLocation);
        OutputStream out = new FileOutputStream(targetLocation);

        // Copy the bits from instream to outstream
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
    }
}

Got some better error handling and better handles if the passed target file lies in a directory that does not exist.

See the example here. The sdcard is external storage, so you can access it via getExternalStorageDirectory.

yes it is possible and im using below method in my code . Hope use full to you:-

public static void copyDirectoryOneLocationToAnotherLocation(File sourceLocation, File targetLocation)
        throws IOException {

    if (sourceLocation.isDirectory()) {
        if (!targetLocation.exists()) {
            targetLocation.mkdir();
        }

        String[] children = sourceLocation.list();
        for (int i = 0; i < sourceLocation.listFiles().length; i++) {

            copyDirectoryOneLocationToAnotherLocation(new File(sourceLocation, children[i]),
                    new File(targetLocation, children[i]));
        }
    } else {

        InputStream in = new FileInputStream(sourceLocation);

        OutputStream out = new FileOutputStream(targetLocation);

        // Copy the bits from instream to outstream
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
    }

}

To move files or directories, you can use File.renameTo(String path) function

File oldFile = new File (oldFilePath);
oldFile.renameTo(newFilePath);

Kotlin code

fun File.copyFileTo(file: File) {
    inputStream().use { input ->
        file.outputStream().use { output ->
            input.copyTo(output)
        }
    }
}

fun File.copyDirTo(dir: File) {
    if (!dir.exists()) {
        dir.mkdirs()
    }
    listFiles()?.forEach {
        if (it.isDirectory) {
            it.copyDirTo(File(dir, it.name))
        } else {
            it.copyFileTo(File(dir, it.name))
        }
    }
}