ios文件管理
#import <Foundation/Foundation.h>
#define PATH1 @"/Users/aoyolo5/Desktop/文件管理"
#define PATH2 @"/Users/aoyolo5/Desktop/文件管理/name.txt"
#define PATH3 @"/Users/aoyolo5/Desktop/array.plist"
void fileManager()
{
//文件管理
//1.创建文件管理单例
NSFileManager *fm = [NSFileManager defaultManager];
//2.查看目录
//浅度遍历
NSArray *array = [fm contentsOfDirectoryAtPath:PATH1 error:nil];
//深度遍历
array = [fm subpathsOfDirectoryAtPath:PATH1 error:nil];
NSLog(@"%@",array);
//3.创建路径
NSString *newPath = [PATH1 stringByAppendingString:@"/name.txt"];
// [fm createDirectoryAtPath:newPath withIntermediateDirectories:YES attributes:nil error:nil];
//4.创建文件
//newFile = /Users/aoyolo5/Desktop/文件管理/n/f/cname.txt
NSString *newFile = [newPath stringByAppendingString:@"/name.txt"];
// [fm createFileAtPath:newFile contents:nil attributes:nil];
//5.写文件
NSArray *arr1 = @[@"1", @"2", @"3"];
// [arr1 writeToFile:newFile atomically:YES];
// NSArray *arr2 = [[NSArray alloc]initWithContentsOfFile:newFile];
// NSLog(@"%@", arr2);
NSError *error = nil;
//移动和复制操作需要注意的地方：目标文件的最后一个路径字符串要不存在（不能重名）,这个字符串将作为被移动（被复制）的文件的新名字
NSString *toPath = [PATH1 stringByAppendingString:@"/a/c/file1.txt"];
// [fm moveItemAtPath:newFile toPath:toPath error:&error];
if (error == nil) {
NSLog(@"移动成功");
}else
{
NSLog(@"%@", error);
}
NSString *copyToPath = [PATH1 stringByAppendingString:@"/a/c/file2.txt"];
error = nil;
// [fm copyItemAtPath:newFile toPath:copyToPath error:&error];
if (error == nil) {
NSLog(@"复制成功");
}else
{
NSLog(@"%@", error);
}
// [fm removeItemAtPath:newPath error:nil];
NSDictionary *infoDic = [fm attributesOfItemAtPath:newPath error:nil];
NSLog(@"%@",infoDic);
}
//文件数据
void reading()
{
//1.以只读方式创建文件句柄
NSFileHandle *fh = [NSFileHandle fileHandleForReadingAtPath:PATH2];
//2.读取文件内容
//[fh readDataOfLength:<#(NSUInteger)#>];
NSData *data = [fh readDataToEndOfFile];
NSString *str = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"%@", data);
NSLog(@"%@", str);
}
void writing()
{
NSFileHandle *fh = [NSFileHandle fileHandleForWritingAtPath:PATH2];
NSData *data = [@"abd" dataUsingEncoding:NSUTF8StringEncoding];
// [fh writeData:data];//替换
// [fh truncateFileAtOffset:0];//清空
// [fh writeData:data];
// [fh seekToEndOfFile];
// [fh writeData:data];
//将句柄移动到2的位置
[fh seekToFileOffset:2];
[fh writeData:data];
}
void fileHandle()
{
//NSSArray NSDictionry
NSArray *array = [[NSArray alloc]initWithContentsOfFile:PATH3];
NSDictionary *dic = array[5];
NSLog(@"%@",[dic objectForKey:@"k2"]);
}
int main(int argc, const char * argv[]) {
@autoreleasepool {
fileHandle();
}
return 0;
}
