ios笔记一 追加数据

//追加数据

NSString *homePat = NSHomeDirectory();

NSString *sourcePath = [homePath stringByAppedingPathComponent:@"testfile.ext"];

NSFileHandle *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:sourcePath];

//将结点跳转到文件末尾

[fileHandle seekToEndOfFile];

NSString *str = @"追加的数据";

NSData *stringData = [str dataUsingEncoding:NSUTF8StringEncoding];

//追加写入的数据

[fileHandle writeData:stringData];

[fileHandle closeFile];