Question

我有一个方法initWithNSDictionary：

- (id) initWithNSDictionary:(NSDictionary*)countryInfo_
{
    self = [super init];
    if(self) {
        NSLog(@"Country Info = %@",countryInfo_);
            self.code = [countryInfo_  valueForKey:@"countryCode"];
            self.name = [countryInfo_  valueForKey:@"countryName"];
            self.continent = [countryInfo_  valueForKey:@"continentName"];
            self.region = [countryInfo_  valueForKey:@"region"];
            self.currencyCode = [countryInfo_  valueForKey:@"currencyCode"];
            self.population = [countryInfo_  valueForKey:@"population"];
    }
    NSLog(@"code %@", code);

    return self;
}

我通过以下方式访问此方法：

Country *country = [[Country alloc] initWithNSDictionary:jsonObject];

之后我通过以下方式在标签中打印此值：

countryCode.text = [NSString stringWithFormat:@"Country Code = %@", country.code];

当我在控制台中记录它时，我得到：

NSLog(@"Currency Code = %@", currencyCode.text);

Currency Code = Currency Code = (
    BRL
)

在标签的实际设备屏幕上，我只是得到：

Country Name = (

我希望输出如下：

Currency Code = BRL

CountryInfo_：

Country Info = (
        {
        areaInSqKm = "8511965.0";
        capital = "Bras\U00edlia";
        continent = SA;
        continentName = "America meridionale";
        countryCode = BR;
        countryName = Brasile;
        currencyCode = BRL;
        east = "-32.392998";
        fipsCode = BR;
        geonameId = 3469034;
        isoAlpha3 = BRA;
        isoNumeric = 076;
        languages = "pt-BR,es,en,fr";
        north = "5.264877";
        population = 201103330;
        south = "-33.750706";
        west = "-73.985535";
    }
)

国家代码打印：

code (
    BR
)

为什么会这样？

Answer 1

我认为currencyCode的换行符为NSString 试试这个

  currencyCode.text = [[[currencyCode.text stringByReplacingOccurrencesOfString:@"\n" withString:@""] stringByReplacingOccurrencesOfString:@"(" withString:@""] stringByReplacingOccurrencesOfString:@")" withString:@""];`

希望这有用。

Answer 2

实际的CountryInfo_是一个数组，而不是NSDictionary。所以不要传递

Country *country = [[Country alloc] initWithNSDictionary:jsonObject];

尝试传递

Country *country = [[Country alloc] initWithNSDictionary:jsonObject[0]];

Answer 3

尝试这样的事情

self.code = [[countryInfo_ objectAtIndex:0] objectForKey:@"countryCode"];
self.name = [[countryInfo_ objectAtIndex:0] objectForKey:@"countryName"];
self.continent = [[countryInfo_ objectAtIndex:0] objectForKey:@"continentName"];
self.region = [[countryInfo_ objectAtIndex:0] objectForKey:@"region"];
self.currencyCode = [[countryInfo_ objectAtIndex:0] objectForKey:@"currencyCode"];
self.population = [[countryInfo_ objectAtIndex:0] objectForKey:@"population"];

为什么我没有获得NSString的输出

3 个答案: