FontAwesome 5+图标在以编程方式创建的片段中无法正确显示

Question

我正在尝试通过编程创建的TextView中的LinearLayout使用最新版本的FontAwesome字体，但是显示了一个包含十字的框。我同时尝试了FontManager.getTypeface(activity!!.baseContext, FontManager.FONTAWESOME)和FontManager.getTypeface(activity!!.applicationContext, FontManager.FONTAWESOME)，但都没有用。我什至在使用FontAwesone提供的最新.otf文件。我真的不明白自己做错了什么，因为我遵循了FontAwesome网站上的所有说明。是因为布局是动态创建的还是其他问题？

FontManager对象

object FontManager {
    private const val ROOT = "fonts/"
    internal const val FONTAWESOME = ROOT + "fontawesome5-free-regular.otf"

    internal fun getTypeface(context: Context, font: String): Typeface {
        return Typeface.createFromAsset(context.assets, font)
    }
}

片段类

class MyFragment : androidx.fragment.app.Fragment() {
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val mainRelativeLayout = RelativeLayout(activity)

        // Layout Parameters for relative layout items
        val rlpCVPrimary = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)
        val rlpTVPrimaryIcon = RelativeLayout.LayoutParams(LinearLayout.LayoutParams
                .WRAP_CONTENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)
        val rlpTVPrimaryText = RelativeLayout.LayoutParams(LinearLayout.LayoutParams
                .WRAP_CONTENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)
        val rlpTVTitle = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)
        val rlpCVSecondary = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)
        val rlpTVSecondaryIcon = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)
        val rlpTVSecondaryText = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                FrameLayout.LayoutParams.WRAP_CONTENT)

        // Accessing FontAwesome font
        val iconFont = FontManager.getTypeface(activity!!.applicationContext, FontManager.FONTAWESOME)

        //
        val r = context!!.resources
        val fourDp = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4f, r.displayMetrics).toInt()
        val tenDp = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 10f, r.displayMetrics).toInt()
        val thirtyDp = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 30f, r.displayMetrics).toInt()

        // Creating RelativeLayouts for root layout
        val cvRLPrimary = RelativeLayout(context)
        val cvRLSecondary = RelativeLayout(context)

        // Creating CardViews
        val cvPrimary = context?.let { CardView(it) }
        when {
            cvPrimary != null -> {
                cvPrimary.radius = fourDp.toFloat()
                cvPrimary.setContentPadding(tenDp,tenDp,tenDp,tenDp)
                cvPrimary.useCompatPadding = true
                cvPrimary.cardElevation = fourDp.toFloat()
                cvPrimary.layoutParams = rlpCVPrimary
            }
        }
        rlpCVPrimary.setMargins(0, 0, 0, thirtyDp)

        val cvSecondary = context?.let { CardView(it) }
        when {
            cvSecondary != null -> {
                cvSecondary.radius = fourDp.toFloat()
                cvSecondary.setContentPadding(tenDp,tenDp,tenDp,tenDp)
                cvSecondary.useCompatPadding = true
                cvSecondary.cardElevation = fourDp.toFloat()
                cvSecondary.layoutParams = rlpCVSecondary
            }
        }
        rlpCVSecondary.setMargins(0, 0, 0, thirtyDp)

        /*
         * Creating Primary CardView items
         */
        // 'tvPrimaryIcon' TextView
        val tvPrimaryIcon = TextView(context)
        tvPrimaryIcon.text = getString(R.string.fa_icon_sign_in)
        tvPrimaryIcon.typeface = iconFont
        tvPrimaryIcon.layoutParams = rlpCVPrimary
        tvPrimaryIcon.setMargins(0, 0, tenDp, 0)
        TextViewCompat.setTextAppearance(tvPrimaryIcon, android.R.style.TextAppearance_Medium)

        // 'tvPrimaryText' TextView
        val tvPrimaryText = TextView(context)
        tvPrimaryText.text = getString(R.string
                .primary_title)
        TextViewCompat.setTextAppearance(tvPrimaryText, android.R.style.TextAppearance_Medium)


        // 'tvTitle' TextView
        val tvTitle = TextView(context)
        tvTitle.text = getString(R.string.hello_world)
        tvTitle.gravity = Gravity.CENTER
        TextViewCompat.setTextAppearance(tvTitle, android.R.style.TextAppearance_Medium)
        rlpTVTitle.setMargins(0, tenDp, 0, tenDp)

        /*
         * Creating Secondary CardView items
         */
        // 'tvSecondaryIcon' TextView
        val tvIconExit = TextView(context)
        tvIconExit.text = getString(R.string.fa_icon_sign_out)
        tvIconExit.typeface = iconFont
        TextViewCompat.setTextAppearance(tvIconExit, android.R.style.TextAppearance_Medium)
        rlpTVIconExit.setMargins(0, 0, tenDp, 0)

        // 'tvSecondaryText' TextView
        val tvSecondaryText = TextView(context)
        tvSecondaryText.text = getString(R.string.secondary_title)
        TextViewCompat.setTextAppearance(tvSecondaryText, android.R.style.TextAppearance_Medium)


        // Set IDs for text views
        mainRelativeLayout.id = View.generateViewId()
        cvPrimary!!.id = View.generateViewId()
        tvPrimaryIcon.id = View.generateViewId()
        tvPrimaryText.id = View.generateViewId()
        tvTitle.id = View.generateViewId()
        cvSecondary!!.id = View.generateViewId()
        tvSecondaryIcon.id = View.generateViewId()
        tvSecondaryText.id = View.generateViewId()

        // Set Layout Parameters for text views
        tvPrimaryIcon.layoutParams = rlpTVPrimaryIcon
        tvPrimaryText.layoutParams = rlpTVPrimaryText
        tvTitle.layoutParams = rlpTVTitle
        tvSecondaryIcon.layoutParams = rlpTVSecondaryIcon
        tvSecondaryText.layoutParams = rlpTVSecondaryText

        // Set RelativeLayout rules for views
        rlpTVPrimaryText.addRule(RelativeLayout.END_OF, tvPrimaryIcon.id)
        rlpTVTitle.addRule(RelativeLayout.BELOW, cvPrimary.id)
        rlpCVSecondary.addRule(RelativeLayout.BELOW, tvTitle.id)
        rlpTVSecondaryText.addRule(RelativeLayout.END_OF, tvSecondaryIcon.id)

        // Adding items to root layout
        mainRelativeLayout.addView(cvPrimary)
        cvPrimary.addView(cvRLPrimary)
        cvRLPrimary.addView(tvPrimaryIcon)
        cvRLPrimary.addView(tvPrimaryText)
        mainRelativeLayout.addView(tvTitle)
        mainRelativeLayout.addView(cvSecondary)
        cvSecondary.addView(cvRLSecondary)
        cvRLSecondary.addView(tvSecondaryIcon)  
        cvRLSecondary.addView(tvSecondaryText)

        return mainRelativeLayout
    }
}