用以下的代码,有时候能够实现文件移动的功能,有时候实现不了,环境什么都一样,都是fat32的,大家遇到过这种奇怪的现象么,帮忙阿,谢了先 if(newfilename == null || oldFileName == null){
AlphaLog.appLogger.error("「rename file 」 err:" + newfilename.toString() + "," + oldFileName.toString());
}
if(newfilename.trim().length() == 0 || oldFileName.getName().trim().length() == 0) {
AlphaLog.appLogger.error("「rename file 」 err:" + "size == zero");
} if(oldFileName.exists())
{
AlphaLog.appLogger.info(oldFileName.getPath()+" rename to "+newFileName.getPath());
AlphaLog.appLogger.info("「rename file 」 is_rename:" +oldFileName.renameTo(newFileName)); }else {
AlphaLog.appLogger.error("oldFileName doesnot exist");
}
AlphaLog.appLogger.error("「rename file 」 err:" + newfilename.toString() + "," + oldFileName.toString());
}
if(newfilename.trim().length() == 0 || oldFileName.getName().trim().length() == 0) {
AlphaLog.appLogger.error("「rename file 」 err:" + "size == zero");
} if(oldFileName.exists())
{
AlphaLog.appLogger.info(oldFileName.getPath()+" rename to "+newFileName.getPath());
AlphaLog.appLogger.info("「rename file 」 is_rename:" +oldFileName.renameTo(newFileName)); }else {
AlphaLog.appLogger.error("oldFileName doesnot exist");
}
1.if(newfilename == null || oldFileName == null){
AlphaLog.appLogger.error("「rename file 」 err:" + newfilename.toString() + "," + oldFileName.toString());
}
既然newfilename 或者oldFileName可能等于null,你怎么能用 newfilename.toString() 或者 oldFileName.toString()?2. 我不知道 调用AlphaLog.appLogger.error()会不会使得程序在调用处退出,但从你的程序看应该是不会退出程序的,那么你三个 if 语句并列,给我的感觉不太好。总结:这段程序写的太差,需要重新修改。
canot key in chinese ,suddenly!
as tangqs(tangqs) said ; this function write too failure,thanks for u comment
keep care plsto fox_blue(蓝狐)
yes ,i will check this,how to ensure the oldfile didnt call out by another function?
i can make sure the newfile doesn't exist.