Objective-C NSFileManager 檔案管理總結

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createFileAtPath //建立檔案

        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  //複製檔案

        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  //移動檔案

        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   //刪除檔案

        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   //擷取檔案屬性， 檔案大字，返回NSDictionary

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/log.txt",NSHomeDirectory()];                NSDictionary *dic = [fm attributesOfItemAtPath:strpath1 error:nil];        NSLog(@"%@",dic);

currentDirectoryPath   //擷取目前的目錄

       NSFileManager *fm = [NSFileManager defaultManager];       NSString *strpath = [fm currentDirectoryPath];       NSLog(@"%@",strpath);

createDirectoryAtPath   //建立目錄

        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    //判斷檔案或目錄是否存在

        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   //枚舉目錄，將子目錄全部枚舉

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/Desktop",NSHomeDirectory()];        NSDirectoryEnumerator *dirs = [fm enumeratorAtPath:strpath1];                NSString *dir;        while (dir=[dirs nextObject]) {            NSLog(@"%@",dir);        }

contentsOfDirectoryAtPath   //枚舉目錄，不枚舉子目錄

        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);        }

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Objective-C NSFileManager 檔案管理總結