我有寫範例程式碼,附上超連結:
還要記得在Manifest中宣告要讀寫檔案的權限,加入這兩行:
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
public void copyDownLoadDir(){ // 複製Download資料夾 String DownloadDirPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath(); GoCopyFolder(DownloadDirPath , DownloadDirPath+"testCopyDir"); }
// 單一檔案的複製齁,comePath輸入想要複製的檔案路徑,goPath是目的地路徑拉
public void GoCopyFile(String comepath, String gopath) throws IOException {
try {
File wantfile = new File(comepath);
File newfile = new File(gopath);
InputStream in = new FileInputStream(wantfile);
OutputStream out = new FileOutputStream(newfile);
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
} catch (Exception e) {
Log.e("copy file error", e.toString());
// TODO: handle exception
}
}
// 整個資料夾的複製齁,comePath輸入想要複製的資料夾路徑,goPath是目的地路徑拉
public void GoCopyFolder(String comePath, String goPath){
try {
( new File(goPath)).mkdirs(); //弄資料夾拉
File a= new File(comePath);
String[] file=a.list();
File temp= null ;
for ( int i = 0 ; i < file.length; i++) {
if (comePath.endsWith(File.separator)){
temp= new File(comePath+file[i]);
}
else
{
temp= new File(comePath+File.separator+file[i]);
}
if (temp.isFile()){
FileInputStream input = new FileInputStream(temp);
FileOutputStream output = new FileOutputStream(goPath + "/" +
(temp.getName()).toString());
byte [] b = new byte [1024];
int len;
while ( (len = input.read(b)) != - 1 ) {
output.write(b, 0 , len);
}
output.flush();
output.close();
input.close();
}
if (temp.isDirectory()){
//裡面還有東西要繼續幹
GoCopyFolder(comePath+ "/" +file[i],goPath+ "/" +file[i]);
}
}
}
catch (Exception e) {
Log.e("folder error", e.toString());
}
}
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