将文件夹内容复制到android中的其他文件夹

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;

public class FolderCopyUtil {
    public static void copyFolder(File sourceFolder, File destinationFolder) throws IOException {
        // 创建目标文件夹
        if (!destinationFolder.exists()) {
            destinationFolder.mkdirs();
        }

        // 获取源文件夹中的所有文件和子文件夹
        File[] files = sourceFolder.listFiles();

        if (files != null) {
            for (File file : files) {
                if (file.isDirectory()) {
                    // 递归复制子文件夹
                    File newDestinationFolder = new File(destinationFolder, file.getName());
                    copyFolder(file, newDestinationFolder);
                } else {
                    // 复制文件
                    File newFile = new File(destinationFolder, file.getName());
                    copyFile(file, newFile);
                }
            }
        }
    }

    private static void copyFile(File sourceFile, File destinationFile) throws IOException {
        FileChannel sourceChannel = null;
        FileChannel destinationChannel = null;

        try {
            sourceChannel = new FileInputStream(sourceFile).getChannel();
            destinationChannel = new FileOutputStream(destinationFile).getChannel();
            destinationChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
        } finally {
            if (sourceChannel != null) {
                sourceChannel.close();
            }
            if (destinationChannel != null) {
                destinationChannel.close();
            }
        }
    }
}