A set of common extensions methods. Expecially for getting resources and setting the resource values to various View widgets

ResourceExtension.kt

@SuppressLint("InlinedApi")
internal fun Context.getThemeBackgroundColor(): Int {
    val attributes = theme.obtainStyledAttributes(intArrayOf(android.R.attr.colorBackgroundFloating))
    try {
        return attributes.getColor(0, Color.WHITE)
    } finally {
        attributes.recycle()
    }
}

internal fun Context.getFont(
    @FontRes fontRes: Int? = null,
    font: Typeface? = null
): Typeface? = font ?: if (fontRes != null) ResourcesCompat.getFont(this, fontRes) else null

internal fun Context.getColor(
    @ColorRes colorRes: Int? = null,
    @ColorInt color: Int? = null
): Int? = color ?: if (colorRes != null) ContextCompat.getColor(this, colorRes) else null

internal fun Context.getDrawableAsset(
    @DrawableRes iconDrawableRes: Int? = null,
    iconDrawable: Drawable? = null
): Drawable? {
    return iconDrawable ?: if (iconDrawableRes != null) ContextCompat.getDrawable(
        this,
        iconDrawableRes
    ) else null
}

internal fun Context.getDimension(
    @DimenRes dimenRes: Int? = null,
    @Px dimensionInPx: Int? = null
): Float? = dimensionInPx?.toFloat() ?: if (dimenRes != null) resources.getDimension(dimenRes) else null

internal fun Context.getTextString(
    @StringRes titleRes: Int? = null,
    text: String? = null
): String? {
    return text ?: if (titleRes != null) getString(titleRes) else null
}

internal fun TextView.saveSetText(
    @StringRes textRes: Int? = null,
    text: String? = null
) {
    context.getTextString(textRes, text)?.let {
        setText(it)
    }
}

internal fun TextView.saveSetTextColor(
    @ColorRes colorRes: Int? = null,
    @ColorInt color: Int? = null
) {
    context.getColor(colorRes, color)?.let {
        setTextColor(it)
    }
}

internal fun ImageView.saveSetIconDrawable(
    @DrawableRes iconDrawableRes: Int? = null,
    iconDrawable: Drawable? = null
) {
    context.getDrawableAsset(iconDrawableRes, iconDrawable)?.let {
        setImageDrawable(it)
        show()
    }
}

internal fun TextView.saveSetTypeFace(@FontRes fontRes: Int? = null, font: Typeface? = null) {
    context.getFont(fontRes, font)?.let {
        typeface = it
    }
}