android 将项目下的数据库拷贝到sd卡中

/**
* 将项目下的数据库拷贝到sd卡中
*/
public static boolean copyDbToSdCard()
{
FileInputStream fis = null;
FileOutputStream ops = null;
try
{
File file = VerifyApp.getInstance().getFilesDir();
File dir = new File(file.getParent(), "databases");
File db = new File(dir, "map.db3");
File sddb = new File(Environment.getExternalStorageDirectory().getAbsolutePath() ， "map.db3");
fis = new FileInputStream(db);
ops = new FileOutputStream(sddb);
byte[] buffer = new byte[4096];
int index = 0;
while ((index = fis.read(buffer)) != -1)
{
ops.write(buffer, 0, index);
}
ops.flush();
ops.close();
fis.close();
}
catch (FileNotFoundException e)
{
return false;
}
catch (IOException e)
{
return false;
}
finally
{
try
{
if (ops != null)
{
ops.close();
ops = null;
}
}
catch (IOException e)
{

}
try
{
if (fis != null)
{
fis.close();
fis = null;
}
}
catch (IOException e)
{

}
}
return true;
}