1、文件或文件夹的复制

/*

* 下面两个方法不是AsyncTask的接口

*

* copyFileOrDir 目录复制

* copyFile 文件复制

*/

private void copyFileOrDir(String path) {

AssetManager assetManager = mContext.getAssets();

String assets[] = null;

try {

assets = assetManager.list(path);

//复制单个文件

if (assets.length == 0)

{

copyFile(path);

}

//复制文件夹中的文件到另一个目录中

else

{

for (int i = 0; i < assets.length; ++i)

{

Log.e("Path",path + "/" + assets[i]);

copyFileOrDir(path + "/" + assets[i]);

}

}

} catch (IOException ex) {

Log.e("tag", "I/O Exception", ex);

}

}

private void copyFile(String filename) {

AssetManager assetManager = mContext.getAssets();

InputStream in = null;

OutputStream out = null;

try {

in = assetManager.open(filename);

String newFileName = SDPath +"/"+filename;

Log.e("here",newFileName);

out = new FileOutputStream(newFileName);

byte[] buffer = new byte[1024];

int read;

while ((read = in.read(buffer)) != -1) {

out.write(buffer, 0, read);

}

in.close();

in = null;

out.flush();

out.close();

out = null;

} catch (Exception e) {

Log.e("copyFile", e.getMessage());

}

}