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【Android】assetsフォルダにあるテキストファイルを読み込む方法

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fun readFile(fileName: String): String {
    var text = ""

    try {
        val inputStream = context.assets.open(fileName)
        text = inputStream.bufferedReader().use {
            it.readText()
        }
    } catch (e: Exception) {
        // エラー処理
    }
    return text
}

val inputStream = context.assets.open(fileName)でassetsフォルダにあるfileNameファイルを読み込みます。
fileNameには拡張子を含んだ名前を渡します。
textには読み込んだテキストファイルの中身(改行も含む)が入ります。

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