如何将NSMutableDictionary中的值赋给NSArray [英] How to assign values from NSMutableDictionary to NSArray

问题描述

我正在进行JSON解析，我想在 UITableView 中显示我的解析数据。

I am doing JSON parsing and I want to show my parsed data in a UITableView.

为此，我试图将解析后的数据从 NSMutableDictionary 分配到 NSArray ，以在表视图中显示，但数组返回 null 。

For that, I am trying to assign parsed data from NSMutableDictionary to NSArray to show in the table view but the array returns null.

这里我的数组返回 null value;

Here my array returns null value;

NSMutableDictionary *tempDict1;
NSArray *arr = [[tempDict1 valueForKey:@"rates"]  componentsSeparatedByString:@";"];

代码

- (void)connectionDidFinishLoading:(NSURLConnection *)connection 
{
    [connection release];

    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    self.responseData = nil;

    //    NSArray *latestrates = [[responseString JSONValue] objectForKey:@"rates"];
    [responseString release];

    values = [responseString JSONValue];
    array = [[NSMutableArray alloc] init];
    array = [values valueForKey:@"rates"];
    NSLog(@"array values:--> %@",array);


    tempDict1 = (NSMutableDictionary *)array;  
    arr = [[tempDict1 valueForKey:@"rates"]  componentsSeparatedByString:@";"];
    NSString *subStar = @"=";
    NSMutableArray *arrTitle = [[NSMutableArray alloc] init];
    NSMutableArray *arrValues = [[NSMutableArray alloc] init];
    [arrTitle removeAllObjects];
    [arrValues removeAllObjects];
    for (int i=0; i<[arr count]-1; i++)
    {
        [arrTitle addObject:[[arr objectAtIndex:i] substringToIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])-1]];
        [arrValues addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])]];
        NSLog(@"arrTitle is:--> %@",arrTitle);
    }

    tempDict1 = (NSMutableDictionary*)[array objectAtIndex:0];
    array = [values valueForKey:@"rates"];
    NSLog(@"tempDict--%@",tempDict1);

    [arr retain];
    [tbl_withData reloadData];

}

推荐答案

尝试编辑connectionDidFinishLoading中的第四行

Try editing fourth line in connectionDidFinishLoading to

values = [responseString JSONFragments];

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