Objective-C NSFileManager 文件管理总结
2024-08-30 01:10:47
createFileAtPath //创建文件
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];
NSString *strdata = @"test"; bool bRet = [fm createFileAtPath:strpath contents:strdata attributes:nil];
if(!bRet)
{
NSLog(@"create file error");
}
copyItemAtPath //拷贝文件
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];
NSString *strpath2 = [NSString stringWithFormat:@"%@/file2.txt",NSHomeDirectory()]; bool bRet = [fm copyItemAtPath:strpath1 toPath:strpath2 error:nil];
if(!bRet)
{
NSLog(@"copy file error");
}
moveItemAtPath //移动文件
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];
NSString *strpath2 = [NSString stringWithFormat:@"%@/file2.txt",NSHomeDirectory()]; bool bRet = [fm moveItemAtPath:strpath1 toPath:strpath2 error:nil];
if(!bRet)
{
NSLog(@"move file error");
}
removeItemAtPath //删除文件
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()]; bool bRet = [fm removeItemAtPath:strpath1 error:nil];
if(!bRet)
{
NSLog(@"delete file error");
}
attributesOfItemAtPath //获取文件属性, 文件大字。返回NSDictionary
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/log.txt",NSHomeDirectory()]; NSDictionary *dic = [fm attributesOfItemAtPath:strpath1 error:nil];
NSLog(@"%@",dic);
currentDirectoryPath //获取当前文件夹
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath = [fm currentDirectoryPath];
NSLog(@"%@",strpath);
createDirectoryAtPath //创建文件夹
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/testdir",NSHomeDirectory()];
bool bRet = [fm createDirectoryAtPath:strpath1 withIntermediateDirectories:NO attributes:nil error:nil];
if(!bRet)
{
NSLog(@"create dir error");
}
fileExistsAtPath //推断文件或文件夹是否存在
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/testdir",NSHomeDirectory()];
bool bRet = [fm fileExistsAtPath:strpath1];
if(!bRet)
{
NSLog(@"no file exist");
}
else
{
NSLog(@"file exist");
}
enumeratorAtPath //枚举文件夹,将子文件夹所有枚举
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/Desktop",NSHomeDirectory()];
NSDirectoryEnumerator *dirs = [fm enumeratorAtPath:strpath1]; NSString *dir;
while (dir=[dirs nextObject]) {
NSLog(@"%@",dir);
}
contentsOfDirectoryAtPath //枚举文件夹,不枚举子文件夹
NSFileManager *fm = [NSFileManager defaultManager];
NSString *strpath1 = [NSString stringWithFormat:@"%@/Desktop",NSHomeDirectory()];
NSArray *dirs = [fm contentsOfDirectoryAtPath:strpath1 error:nil]; NSString *dir;
for (dir in dirs)
{
NSLog(@"%@",dir);
}
最新文章
- 前端开发:css技巧,如何设置select、radio 、 checkbox 、file这些不可直接设置的样式 。
- 数据库中GETDATE()函数格式化时间
- Redis到底该如何利用(二)?
- C#-WebForm-★ 制作图片验证码 ★
- Spring task executor同异步
- HTML5 文件异步上传 — h5uploader.js
- context是什么意思
- Mybatis 级联查询 (一对多 )
- Xcode 不提示, 引用失效等情况
- Unity KGFMapSystem插件制作小地图
- Linux内核学习趣谈
- WordPress网站加速优化,一键免费使用七牛CDN插件
- MySQL分类表设计--根据ID删除全部子类
- Array.sort()
- 对css语法中position值的理解
- Ansible 批量修改密码
- Ubuntu16系统中安装htpasswd
- add (db.collection.add)添加数据
- 不立flag了……
- [ 转载 ] Android JNI(一)——NDK与JNI基础