iOS 自定义消息中@消息的编解码问题

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自定义消息涉及到@消息的时候，可能遇到的编解码出错的问题

发布时间： 2017-03-27 18:51

回答：

自定义消息的@消息的编解码

编码参考：

- (NSData *)encode {

NSMutableDictionary *dataDict = [NSMutableDictionary dictionary];

[dataDict setObject:self.content forKey:@"content"];

if (self.extra) {

[dataDict setObject:self.extra forKey:@"extra"];

}

if (self.mentionedInfo) {

NSMutableDictionary *mentionedInfodic = [[NSMutableDictionary alloc] init];

[mentionedInfodic setObject:@(self.mentionedInfo.type) forKeyedSubscript:@"type"];

if (self.mentionedInfo.type == RC_Mentioned_Users) {

[mentionedInfodic setObject:self.mentionedInfo.userIdList

forKeyedSubscript:@"userIdList"];

}

[mentionedInfodic setObject:self.mentionedInfo.mentionedContent

forKeyedSubscript:@"mentionedContent"];

[dataDict setObject:mentionedInfodic forKey:@"mentionedInfo"];

}

NSData *data = [NSJSONSerialization dataWithJSONObject:dataDict

options:kNilOptions

error:nil];

return data;

}

解码参考：

- (void)decodeWithData:(NSData *)data {

__autoreleasing NSError *__error = nil;

if (!data) {

return;

}

NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data

options:kNilOptions

error:&__error];

RCDictionary *json = [[RCDictionary alloc] initWithDictionary:dictionary];

if (json) {

self.content = [json stringObjectForKey:@"content"];

self.extra = [json stringObjectForKey:@"extra"];

NSDictionary *mentionedInfoDic = [json objectForKey:@"mentionedInfo"];

[self decodeMentionedInfo:mentionedInfoDic];//调用下面方法进行解码

}

- (void)decodeMentionedInfo:(NSDictionary *)dictionary {//此方法在RCMessageContent中已经实现，直接调用即可

RCDictionary *mentionedInfoDic =

[[RCDictionary alloc] initWithDictionary:dictionary];

if (mentionedInfoDic) {

RCMentionedInfo *mentionedInfo = [[RCMentionedInfo alloc] init];

mentionedInfo.type =

[[mentionedInfoDic numberObjectForKey:@"type"] intValue];

if (mentionedInfo.type == RC_Mentioned_Users) {

mentionedInfo.userIdList = [mentionedInfoDic objectForKey:@"userIdList"];

}

mentionedInfo.mentionedContent =

[mentionedInfoDic objectForKey:@"mentionedContent"];

self.mentionedInfo = mentionedInfo;

}