得到当前文档root目录路径
NSString* root=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES) objectAtIndex:0];
root路径对应软件的doucument根目录
此目录下的文件路径:
NSString *myFilePath = [root stringByAppendingPathComponent:@"myFileName.xxx"];
读取文件内容用
NSString* aStr = [NSString stringWithContentsOfFile: myFilePath encoding:NSUTF8StringEncoding error:nil];
写入用:
[myString writeToFile:myFilePath atomically:YES encoding:NSUTF8StringEncoding error:nil];












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