陣列/字典轉化成JSON格式
//字典轉化json
NSDictionary * jsonDic = [NSDictionarydictionaryWithObjects:@[@"100",@"99",@"98"]forKeys:@[@"a",@"b",@"c"]];
NSData * jsonData = [NSJSONSerializationdataWithJSONObject:jsonDic options:NSJSONWritingPrettyPrintederror:nil];
NSString * jsonString = [[NSStringalloc] initWithData:jsonData encoding
//json轉化字典(json解析)
NSDictionary * dic = [NSJSONSerializationJSONObjectWithData:[jsonString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainerserror:nil];
//陣列轉化json
// NSArray * jsonArr = [NSArray arrayWithObjects:@"1",@"2",@"3", nil];
// NSData * jsonData = [NSJSONSerialization dataWithJSONObject:jsonArr options:NSJSONWritingPrettyPrinted error:nil];
// NSString * jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
//json轉化陣列
// NSArray * arr = [NSJSONSerialization JSONObjectWithData:[jsonString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:nil];
關於NSJSONWritingPrettyPrinted