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java - 如何从 API 中提取值(value)

转载 作者:塔克拉玛干 更新时间:2023-11-03 00:27:25 26 4
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如何从以下 api 中提取特定值?

https://blockchain.info/ticker

{
"USD" : {"15m" : 376.51, "last" : 376.51, "buy" : 376.79, "sell" : 377.61, "symbol" : "$"},
"ISK" : {"15m" : 48027.62, "last" : 48027.62, "buy" : 48063.33, "sell" : 48167.93, "symbol" : "kr"},
"HKD" : {"15m" : 2933.63, "last" : 2933.63, "buy" : 2935.81, "sell" : 2942.2, "symbol" : "$"},
"TWD" : {"15m" : 12551.49, "last" : 12551.49, "buy" : 12560.82, "sell" : 12588.16, "symbol" : "NT$"},
"CHF" : {"15m" : 373.09, "last" : 373.09, "buy" : 373.37, "sell" : 374.18, "symbol" : "CHF"},
"EUR" : {"15m" : 337.4, "last" : 337.4, "buy" : 337.65, "sell" : 338.38, "symbol" : "€"},
"DKK" : {"15m" : 2517.92, "last" : 2517.92, "buy" : 2519.79, "sell" : 2525.27, "symbol" : "kr"},
"CLP" : {"15m" : 265459.51, "last" : 265459.51, "buy" : 265656.92, "sell" : 266235.07, "symbol" : "$"},
"CAD" : {"15m" : 523.97, "last" : 523.97, "buy" : 524.36, "sell" : 525.5, "symbol" : "$"},
"CNY" : {"15m" : 2475.39, "last" : 2475.39, "buy" : 2477.24, "sell" : 2482.63, "symbol" : "¥"},
"THB" : {"15m" : 13398, "last" : 13398, "buy" : 13407.97, "sell" : 13437.15, "symbol" : "฿"},
"AUD" : {"15m" : 532.81, "last" : 532.81, "buy" : 533.21, "sell" : 534.37, "symbol" : "$"},
"SGD" : {"15m" : 530.11, "last" : 530.11, "buy" : 530.5, "sell" : 531.65, "symbol" : "$"},
"KRW" : {"15m" : 453073.94, "last" : 453073.94, "buy" : 453410.87, "sell" : 454397.62, "symbol" : "₩"},
"JPY" : {"15m" : 43995.46, "last" : 43995.46, "buy" : 44028.18, "sell" : 44123.99, "symbol" : "¥"},
"PLN" : {"15m" : 1487.56, "last" : 1487.56, "buy" : 1488.67, "sell" : 1491.91, "symbol" : "zł"},
"GBP" : {"15m" : 259.62, "last" : 259.62, "buy" : 259.82, "sell" : 260.38, "symbol" : "£"},
"SEK" : {"15m" : 3182.51, "last" : 3182.51, "buy" : 3184.88, "sell" : 3191.81, "symbol" : "kr"},
"NZD" : {"15m" : 568.05, "last" : 568.05, "buy" : 568.47, "sell" : 569.71, "symbol" : "$"},
"BRL" : {"15m" : 1469.66, "last" : 1469.66, "buy" : 1470.75, "sell" : 1473.95, "symbol" : "R$"},
"RUB" : {"15m" : 29126.34, "last" : 29126.34, "buy" : 29148, "sell" : 29211.43, "symbol" : "RUB"}

}

我想专门获取加元购买值(value)。

目前,我的 Activity 中有一个按钮和一个 EditText,它们根据用户手动输入的 EditText 中的值执行计算。我想从上面的 api 中提取值,这样用户就不必手动输入该值。

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