【旧事重提】iOS中文件读写

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1. 读取文件  （本地 UTF-8编码的文本文件）

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"song" ofType:@"json"];

NSString *str =[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];

//NSData *data = [NSData dataWithContentsOfFile:filePath];

//NSString *textFile  = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

id jsonObj = [str jsonObject];

NSArray *item = [jsonObj objectForKey:@"data"];

NSLog(@"arr %lu %@", (unsigned long)[item count], item);

2. 写入文件

//Document 目录

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];需要的路径

NSString *fileD = [documentSDirectory stringByAppendingPathComponent:@"xxx.txt"];

NSString* fileName = [[filePath objectAtIndex:0] stringByAppendingPathComponent: DBNAME];

[fileData writeToFile:fileName atomically:YES]

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