基于索引编号从列表中获取字符串

Question

我有类似的字符串数据列表：

[
    https://example.com/app/audio/14/5/1.mp3,
    https://example.com/app/audio/14/5/2.mp3,
    https://example.com/app/audio/14/5/3.mp3,
    https://example.com/app/audio/14/5/4.mp3,
    https://example.com/app/audio/14/5/5.mp3,
    https://example.com/app/audio/14/5/6.mp3,
    https://example.com/app/audio/14/5/7.mp3,
    https://example.com/app/audio/14/5/8.mp3,
    https://example.com/app/audio/14/5/9.mp3,
    https://example.com/app/audio/14/5/10.mp3,
    https://example.com/app/audio/14/5/11.mp3,
    https://example.com/app/audio/14/5/12.mp3,
    https://example.com/app/audio/14/5/13.mp3,
    https://example.com/app/audio/14/5/14.mp3,
    https://example.com/app/audio/14/5/15.mp3
]

我正在寻找从此列表中获取特定字符串的解决方案。例如，如果要获得数字5，它应该返回https://example.com/app/app/audio/14/5/5/5.mp3 string。

我知道您可能会说它是从0开始的，所以字符串编号5是 https://example.com/app/audio/14/5/6.mp3而不是 https://example.com/app/audio/14/5/5.mp3，但我正在寻找 特定名称而不是行索引。

代码

这是我到目前为止所拥有的：

// Load file
String file = currentLang == "id" ? "assets/lists/a-player-id.json" :
currentLang == "fa" ? "assets/lists/a-player-fa.json" :
"assets/lists/a-player-en.json";
String data = await DefaultAssetBundle.of(context).loadString(file);
var jsonResult = jsonDecode(data);


// Get data from loaded file
var playlist;
var audios;
for(var i = 0; i < jsonResult.length; i++) {
    if(jsonResult[i]['name'] == bookName || jsonResult[i]['name_en'] == bookName || jsonResult[i]['name_fa'] == bookName){
        playlist = jsonResult[i]['playList'];
        audios = jsonResult[i]['audios']; // sample data is presented at the top of question.
    }
}

// Get specific string from "audios list"
var myStaticNumber = 5;
// Here I need help to get myStaticNumber from audios list.

任何建议？

Answer 1

您正在寻找这个：

StringList[myStaticNumber-1];