一 jsonstring 轉(zhuǎn)化為object類
NSString *jsonStr = @"..........";
NSData *jsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
NSError *errorJson;
id noSummary = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableLeaves error:&errorJson];
二 object類轉(zhuǎn)為jsonstr
NSData * jsonData = [NSJSONSerialization dataWithJSONObject:@“object 類” options:0 error:nil];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
