将文件夹的内容复制到android中的其他文件夹 [英] Copy Content of Folder to other Folder in android

问题描述

如何将目录的所有内容(不包括父项)复制到android中的另一个目录.当我使用以下代码时，我复制了源父项和内容，我只想复制内容.我得到了文件/Tmp/内容，我想像这样复制文件/内容

How to copy all contents of Directory (not including Parent) to another directory in android.When I use below code I copyed source parent and contents,I wantto copy only contents. I got Files/Tmp/Contens, I want to copy like this Files/Contents

        File src = new File(context.getExternalFilesDir(null).getAbsolutePath(), "Tmp");
        File dir = new File(context.getExternalFilesDir(null).getAbsolutePath(), "Files");

        try {
            Utils.copyFileOrDirectory(src.getAbsolutePath(),dir.getAbsolutePath());
        } catch (Exception e) {
            e.printStackTrace();

        }

复制文件

public static void copyFileOrDirectory(String srcDir, String dstDir) {

    try {
        File src = new File(srcDir);
        File dst = new File(dstDir, src.getName());

        if (src.isDirectory()) {

            String files[] = src.list();
            int filesLength = files.length;
            for (int i = 0; i < filesLength; i++) {
                String src1 = (new File(src, files[i]).getPath());
                String dst1 = dst.getPath();
                copyFileOrDirectory(src1, dst1);

            }
        } else {
            copyFile(src, dst);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.getParentFile().exists())
        destFile.getParentFile().mkdirs();

    if (!destFile.exists()) {
        destFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

推荐答案

使用FileUtils库

Use FileUtils library

        File src = new File(context.getExternalFilesDir(null).getAbsolutePath(), "Tmp");
        File dir = new File(context.getExternalFilesDir(null).getAbsolutePath(), "Files");

        try {
            FileUtils.copyDirectory(src,dir);
        } catch (IOException e) {
            e.printStackTrace();
        }

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