NSMutableArray和NSDictionary笔记

最新推荐文章于 2024-05-23 19:43:31 发布

原创最新推荐文章于 2024-05-23 19:43:31 发布 · 2.1k 阅读

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本文演示了如何使用Objective-C创建NSMutableArray并填充含有uid和score键的NSDictionary对象。通过循环添加字典到数组，并从数组中检索第一个元素，提取uid和score值。

    NSMutableArray *arrWinUserIds = [[NSMutableArray alloc] initWithCapacity:0];
    for (int i = 0; i < 2; i ++) {
        NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithLongLong:100+i], @"uid", [NSNumber numberWithLongLong:200+i], @"score", nil];
        [arrWinUserIds addObject:dic];
    }
    
    NSDictionary *dic2 = [arrWinUserIds objectAtIndex:0];
    NSLog(@"%@", dic2);
    NSNumber *numId = [dic2 objectForKey:@"uid"];
    NSNumber *numScore = [dic2 objectForKey:@"score"];
    
    NSLog(@"%lld, %lld", numId.longLongValue, numScore.longLongValue);