medium_atvasis_reflection.kt

/**********************************************************************************************************************
 * Remapping auto-size functionalities from AppCompatTextViewAutoSizeHelper.
 **********************************************************************************************************************/
fun AppCompatTextView.autoSizeTextAvailableSizes(): IntArray =
    invokeAndReturnWithDefault(this, "getAutoSizeTextAvailableSizes", IntArray(0))


/**********************************************************************************************************************
 * Copied from AppCompatTextViewAutoSizeHelper but adapted to AppCompatTextView.
 **********************************************************************************************************************/

private fun <T> invokeAndReturnWithDefault(target: Any, methodName: String, defaultValue: T): T {
    return try {
        // Cache lookup.
        getTextViewMethod(methodName)!!.invoke(target) as T
    } catch (ex: Exception) {
        Log.w(LOG_TAG, "Failed to invoke TextView#$methodName() method", ex)
        defaultValue
    }
}


/**********************************************************************************************************************
 * Copied from AppCompatTextViewAutoSizeHelper but adapted to AppCompatTextView.
 **********************************************************************************************************************/

// Cache of TextView methods used via reflection; the key is the method name and the value is
// the method itself or null if it can not be found.
private val sTextViewMethodByNameCache = ConcurrentHashMap<String, Method>()

private fun getTextViewMethod(methodName: String): Method? {
    try {
        var method: Method? = sTextViewMethodByNameCache[methodName]
        if (method == null) {
            method = AppCompatTextView::class.java.getDeclaredMethod(methodName)
            if (method != null) {
                method.isAccessible = true
                // Cache update.
                sTextViewMethodByNameCache[methodName] = method
            }
        }

        return method
    } catch (ex: Exception) {
        Log.w(LOG_TAG, "Failed to retrieve TextView#$methodName() method", ex)
        return null
    }
}