Beta Android DebugTools

DebugTools.kt

fun Fragment.LogD(tag: String, msg: String) {
    val activity: String? = activity?.toStringSimple()
    val fragment: String = this.toStringSimple()
    Log.d(tag, "Fragment %s %s %s".format(activity, fragment, msg))
}

private val nameList = ('A'..'Z').toList()
private val nameCache = mutableMapOf<String, String>()

private var lastUsedIndexForActivity: Int = 0
fun Activity.toStringSimple(): String {
    val activityName = hashCode().toString()
    return nameCache[activityName]
        ?: nameList[lastUsedIndexForActivity].let { "Activity[$it]" }.also {
            val len = nameList.size
            lastUsedIndexForActivity = (lastUsedIndexForActivity + 1) % len
            nameCache[activityName] = it
        }
}

private var lastUsedIndexForFragment: Int = 0
fun Fragment.toStringSimple(): String {
    val fragmentName = hashCode().toString()
    return nameCache[fragmentName]
        ?: nameList[lastUsedIndexForFragment].let { "Fragment[$it]" }.also {
            val len = nameList.size
            lastUsedIndexForFragment = (lastUsedIndexForFragment + 1) % len
            nameCache[fragmentName] = it
        }
}