NSArray文件读写

1.NSArray数据写入到文件中

 　　NSArray *arr = @[@"lnj", @"lmj", @"jjj", @"xcq"];
    BOOL flag = [arr writeToFile:@"/Users/LNJ/Desktop/persons.plist" atomically:YES];
    NSLog(@"%i", flag);

2.从文件中读取数据到NSArray中

    NSArray *newArr = [NSArray arrayWithContentsOfFile:@"/Users/LNJ/Desktop/persons.xml"];
    NSLog(@"%@", newArr);