I am making an app that displays daily stock data to the user. The problem is, I am using retrofit to make the API calls. With this type of JSON, I would need a POJO with every stock symbol. This obviously isn't possible.
I want to be able to do something along the lines of - listOfStocks[1].getQuote().getLatestPrice();
This is the kind of JSON data that I am receiving.
{
"AAPL":{
"quote":{
"symbol":"AAPL",
"companyName":"Apple Inc.",
"primaryExchange":"Nasdaq Global Select",
"sector":"Technology",
"calculationPrice":"close",
"open":156.21,
"openTime":1548772200635,
"close":154.68,
"closeTime":1548795600703,
"high":158.13,
"low":154.11,
"latestPrice":154.68,
"latestSource":"Close",
"latestTime":"January 29, 2019",
"latestUpdate":1548795600703,
"latestVolume":39402866,
"iexRealtimePrice":161.04,
"iexRealtimeSize":90,
"iexLastUpdated":1548799005088,
"delayedPrice":154.68,
"delayedPriceTime":1548795600703,
"extendedPrice":160.6,
"extendedChange":5.92,
"extendedChangePercent":0.03827,
"extendedPriceTime":1548799199389,
"previousClose":156.3,
"change":-1.62,
"changePercent":-0.01036,
"iexMarketPercent":0.02338,
"iexVolume":921239,
"avgTotalVolume":42308638,
"iexBidPrice":0,
"iexBidSize":0,
"iexAskPrice":0,
"iexAskSize":0,
"marketCap":731605928040,
"peRatio":13.03,
"week52High":233.47,
"week52Low":142,
"ytdChange":-0.030876717325227843
}
},
"FB":{
"quote":{
"symbol":"FB",
"companyName":"Facebook Inc.",
"primaryExchange":"Nasdaq Global Select",
"sector":"Technology",
"calculationPrice":"close",
"open":148,
"openTime":1548772200837,
"close":144.19,
"closeTime":1548795600692,
"high":148.1,
"low":143.43,
"latestPrice":144.19,
"latestSource":"Close",
"latestTime":"January 29, 2019",
"latestUpdate":1548795600692,
"latestVolume":17353892,
"iexRealtimePrice":144.25,
"iexRealtimeSize":100,
"iexLastUpdated":1548796485236,
"delayedPrice":144.19,
"delayedPriceTime":1548795600692,
"extendedPrice":145.05,
"extendedChange":0.86,
"extendedChangePercent":0.00596,
"extendedPriceTime":1548799197301,
"previousClose":147.47,
"change":-3.28,
"changePercent":-0.02224,
"iexMarketPercent":0.02505,
"iexVolume":434715,
"avgTotalVolume":25773532,
"iexBidPrice":0,
"iexBidSize":0,
"iexAskPrice":0,
"iexAskSize":0,
"marketCap":414371435774,
"peRatio":19.51,
"week52High":218.62,
"week52Low":123.02,
"ytdChange":0.04048110849056598
}
},
"MSFT":{
"quote":{
"symbol":"MSFT",
"companyName":"Microsoft Corporation",
"primaryExchange":"Nasdaq Global Select",
"sector":"Technology",
"calculationPrice":"close",
"open":104.88,
"openTime":1548772200862,
"close":102.94,
"closeTime":1548795600515,
"high":104.97,
"low":102.17,
"latestPrice":102.94,
"latestSource":"Close",
"latestTime":"January 29, 2019",
"latestUpdate":1548795600515,
"latestVolume":31105047,
"iexRealtimePrice":102.895,
"iexRealtimeSize":100,
"iexLastUpdated":1548795598662,
"delayedPrice":102.94,
"delayedPriceTime":1548795600515,
"extendedPrice":103.67,
"extendedChange":0.73,
"extendedChangePercent":0.00709,
"extendedPriceTime":1548799195514,
"previousClose":105.08,
"change":-2.14,
"changePercent":-0.02037,
"iexMarketPercent":0.03309,
"iexVolume":1029266,
"avgTotalVolume":40670438,
"iexBidPrice":0,
"iexBidSize":0,
"iexAskPrice":0,
"iexAskSize":0,
"marketCap":790189956684,
"peRatio":26.53,
"week52High":116.18,
"week52Low":83.83,
"ytdChange":-0.002371582278481079
}
}
}
Personally I'd make a model for quote and symbol then use a Map<String, Symbol>.
Here's an example where the model only has the latestPrice property to shorten the example:
class Quote {
@SerializedName("latestPrice")
private double latestPrice;
// ...
}
class Symbol {
@SerializedName("quote")
private Quote quote;
//...
}
Now making the Retrofit call use Map<String, Symbol> should give you a map where you can iterate over the entries and get the latest price of each of them.