안드로이드 - XmlResourceParser로 XML 파싱하는 방법

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="codechacha">
        <attr name="title" format="string" />
        <attr name="url" format="string" />
    </declare-styleable>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<codechacha
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <site app:title="@string/site_title_1"
          app:url="https://codechacha.com/ko/get-free-and-total-size-of-volumes-in-android/"/>
    <site app:title="@string/site_title_2"
          app:url="https://codechacha.com/ko/android-q-scoped-storage/"/>
    <site app:title="@string/site_title_3"
          app:url="https://codechacha.com/ko/how-to-parse-json-in-android/"/>
    <site app:title="site_title_4"
          app:url="https://codechacha.com/ko/how-to-parse-json-in-android/"/>

</codechacha>

<resources>
    <string name="app_name">XmlResourceParser</string>

    <string name="site_title_1">How to get stroage size</string>
    <string name="site_title_2">Android Q, Scoped Storage</string>
    <string name="site_title_3">How to parse JSON in android</string>
</resources>

<resources>
    <string name="site_title_1">스토리지 크기를 얻는 방법</string>
    <string name="site_title_2">안드로이드 Q, 스코프드 스토리지</string>
    <string name="site_title_3">안드로이드에서 Json을 파싱하는 방법</string>
</resources>

private fun parseXmlDataV1(parser: XmlResourceParser) {
    var eventType = -1
    val namespace = "http://schemas.android.com/apk/res-auto"
    val defaultValue = 0

    while (eventType != XmlResourceParser.END_DOCUMENT) {
        if (eventType == XmlResourceParser.START_TAG) {
            val element = parser.name

            // 처음 아이템의 이름이 "site"인지 확인
            if (element == "site") {
                // "title"의 resource id를 가져옵니다.
                val titleResId = parser.getAttributeResourceValue(
                    namespace, "title", defaultValue)
                var title: String

                // 만약 titleResId가 defaultValue라면 문자열이 하드코딩되었다는 의미입니다.
                if (titleResId == defaultValue) {
                    // 하드코딩된 경우 그냥 읽어오면 됩니다.
                    title = parser.getAttributeValue(namespace, "title")
                } else {
                    // resource id인 경우 getString()을 통해 문자열을 가져옵니다.
                    title = resources.getString(titleResId)
                }
                // url은 문자열을 직접 입력했습니다. resource id를 가져올 필요가 없습니다.
                val url  = parser.getAttributeValue(namespace, "url")
                Log.d(TAG, "title : $title, url: $url")
            }
        }
        eventType = parser.next()
    }
}

override fun onCreate(savedInstanceState: Bundle?) {
    ...
    var parser = resources.getXml(R.xml.sites)
    try {
        Log.d(TAG, "Parsing with v1")
        parseXmlDataV1(parser)
    } catch (e: Exception) {
        Log.d(TAG, "Failed to parse a xml file")
    }
}

11-26 22:11:48.701  6385  6385 D MainActivity: title : How to get stroage size, url: https://codechacha.com/ko/get-free-and-total-size-of-volumes-in-android/
11-26 22:11:48.701  6385  6385 D MainActivity: title : Android Q, Scoped Storage, url: https://codechacha.com/ko/android-q-scoped-storage/
11-26 22:11:48.701  6385  6385 D MainActivity: title : How to parse JSON in android, url: https://codechacha.com/ko/how-to-parse-json-in-android/
11-26 22:11:48.701  6385  6385 D MainActivity: title : site_title_4, url: https://codechacha.com/ko/how-to-parse-json-in-android/

private fun parseXmlDataV2(parser: XmlResourceParser) {
    var eventType = -1
    while (eventType != XmlResourceParser.END_DOCUMENT) {
        if (eventType == XmlResourceParser.START_TAG) {
            val element = parser.name

            if (element == "site") {
                // attrs에 정의한 custom styleable을 가져옵니다.
                val ta: TypedArray = resources.obtainAttributes(
                    parser, R.styleable.codechacha)

                // TypedArray.getString() 메소드에
                // 다음처럼 인자를 전달하여 스트링을 파싱합니다.
                var title = ta.getString(R.styleable.codechacha_title)
                val url  = ta.getString(R.styleable.codechacha_url)
                Log.d(TAG, "title : $title, url: $url")
            }
        }
        eventType = parser.next()
    }
}

override fun onCreate(savedInstanceState: Bundle?) {
    ...
    var parser = resources.getXml(R.xml.sites)
    try {
        Log.d(TAG, "Parsing with v2")
        parseXmlDataV2(parser)
    } catch (e: Exception) {
        Log.d(TAG, "Failed to parse a xml file")
    }
}

11-26 22:11:48.701  6385  6385 D MainActivity: title : How to get stroage size, url: https://codechacha.com/ko/get-free-and-total-size-of-volumes-in-android/
11-26 22:11:48.701  6385  6385 D MainActivity: title : Android Q, Scoped Storage, url: https://codechacha.com/ko/android-q-scoped-storage/
11-26 22:11:48.701  6385  6385 D MainActivity: title : How to parse JSON in android, url: https://codechacha.com/ko/how-to-parse-json-in-android/
11-26 22:11:48.701  6385  6385 D MainActivity: title : site_title_4, url: https://codechacha.com/ko/how-to-parse-json-in-android/