/// <summary>
/// 复制文件，返回是否复制成功。例如files.copy("/sdcard/1.txt", "/sdcard/Download/1.txt")。
/// </summary>
/// <param name="pathFrom">要复制的原文件路径</param>
/// <param name="pathTo">复制到的文件路径</param>
/// <returns></returns>
public bool copy(string pathFrom, string pathTo)
{
return(PFiles.Copy(path(pathFrom), path(pathTo)));
}