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Objective-C NSFileManager 文件管理总结

發布時間:2024/4/18 编程问答 40 豆豆
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createFileAtPath //創建文件

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 ?//復制文件

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 ?//移動文件

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 ? //刪除文件

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 ? //獲取文件屬性, 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 ? //獲取當前目錄

NSFileManager *fm = [NSFileManager defaultManager];NSString *strpath = [fm currentDirectoryPath];NSLog(@"%@",strpath);
createDirectoryAtPath ? //創建目錄

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 ? ?//判斷文件或目錄是否存在

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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