在现有的txt文件-iOS上添加字符串 [英] Adding string on existing txt file -iOS
本文介绍了在现有的txt文件-iOS上添加字符串的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如下面的代码所示,它输出了几个单独的.txt文件。但是,我正在寻找将所有内容保存到一个txt文件中的方法。如何在保存的txt文件末尾添加新字符串?
As shown code below, It is outputting several individual .txt files. However, I am looking in a way to save everything into one txt file. How could I append new string at the end of saved txt file?
-(void)saveData:(NSString *)data
{
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory=[paths objectAtIndex:0];
NSString *fileName=[NSString stringWithFormat:@"%@/%d.txt",documentDirectory,fileInt];
NSString *content=data;
[content writeToFile:fileName atomically:NO encoding:NSStringEncodingConversionAllowLossy error:nil];
NSLog(@"%@",fileName);
fileInt++;
}
推荐答案
好的,我想我得到了它。
Ok, I think I got it.
-(void)saveData:(NSString*)data
{
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory=[paths objectAtIndex:0];
NSString *fileName=[NSString stringWithFormat:@"%@/%d.txt",documentDirectory,1];
NSString *content=data;
NSFileHandle *fileHandler= [NSFileHandle fileHandleForWritingAtPath:fileName];
[fileHandler seekToEndOfFile];
[fileHandler writeData:[content dataUsingEncoding:NSUTF8StringEncoding]];
[fileHandler closeFile];
NSLog(@"%@",fileName);
}
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