71 lines
1.5 KiB
Objective-C
71 lines
1.5 KiB
Objective-C
//
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// CustomAttachmentDecoder.m
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// xplan-ios
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//
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// Created by 冯硕 on 2021/11/16.
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//
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#import "CustomAttachmentDecoder.h"
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#import "NSObject+MJExtension.h"
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#import "AttachmentModel.h"
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@implementation CustomAttachmentDecoder
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- (id<NIMCustomAttachment>)decodeAttachment:(NSString *)content{
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id<NIMCustomAttachment> attachment;
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NSData *data = [content dataUsingEncoding:NSUTF8StringEncoding];
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if (data) {
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NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
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if ([dict isKindOfClass:[NSDictionary class]]) {
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int first = [dict[@"first"] intValue];
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int second = [dict[@"second"] intValue];
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NSDictionary *data = dict[@"data"];
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if ([data isKindOfClass:[NSString class]]) {
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data = [self dictionaryWithJsonString:(NSString *)data];
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}
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if ([data isKindOfClass:[NSDictionary class]]) {
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AttachmentModel *attachment = [[AttachmentModel alloc]init];
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attachment.first = (short)first;
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attachment.second = (short)second;
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attachment.data = data;
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return attachment;
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}
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}
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}
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return attachment;
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}
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//json格式字符串转字典：
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- (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString {
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if (jsonString == nil) {
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return nil;
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}
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NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
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NSError *err;
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NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
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options:NSJSONReadingMutableContainers
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error:&err];
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if(err) {
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NSLog(@"json解析失败：%@",err);
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return nil;
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}
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return dic;
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}
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@end
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