我正在尝试将UTC字符串日期转换为本地时间，这样它的格式更易读。我的Activity布局中有一个textView：

<TextView
    android:id="@+id/dateTv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/titleTv"
    tools:text="Published Date" />

在我的活动中：

class FullArticleActivity : AppCompatActivity() {

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_full_article)

    val articleJson = intent.getStringExtra(ARTICLE_KEY)

    if(!articleJson.isNullOrBlank()) {
      val article = Gson().fromJson<Article>(articleJson, Article::class.java)

        val formatter = SimpleDateFormat("yyyy-MM-dd HH:mm:ssZ", Locale.getDefault())
        formatter.timeZone = TimeZone.getTimeZone("UTC")
        val formattedDate = formatter.parse(article.publishedAt)

      titleTv.text = article.title
      //UTC string
      dateTv.text = article.publishedAt
      contentTv.text = article.content

publishedAt字符串的格式来自api调用"2018-12-10T19:48:39Z"。如何将这种ZULU时间格式转换为本地时间？