import android.graphics.drawable.AnimationDrawable
import android.graphics.drawable.Drawable
import android.os.Handler
import android.util.Log
class FlashAnimationDrawable : AnimationDrawable() {
private val runnable: Runnable
private val handler: Handler = Handler()
private var onFrameChangedListener: OnFrameChangedListener? = null
private var minDuration: Int = Int.MAX_VALUE
private var lastDrawable: Drawable? = null
private var drawableIndexMap: HashMap
<Drawable, Int> = HashMap()
init {
runnable = Runnable {
Log.d("FlashDebug", "run is called.")
if(current != null && lastDrawable != current){
onFrameChangedListener?.onFrameChanged(drawableIndexMap[current]?:0)
lastDrawable = current
}
resetHandler()
}
}
private fun initAnimation(){
for (i in 0 until this.numberOfFrames) {
drawableIndexMap[getFrame(i)] = i
if (minDuration > getDuration(i)) {
minDuration = getDuration(i)
}
}
}
private fun resetHandler() {
Log.d("FlashDebug", "minDuration="+minDuration)
handler.postDelayed(runnable, minDuration.toLong())
}
override fun start() {
super.start()
initAnimation()
Log.d("FlashDebug", "start is called")
resetHandler()
}
override fun stop() {
super.stop()
Log.d("FlashDebug", "stop is called.")
handler.removeCallbacks(runnable)
drawableIndexMap.clear()
}
fun setOnFrameChangedListener(onFrameChangedListener: OnFrameChangedListener){
this.onFrameChangedListener = onFrameChangedListener
}
interface OnFrameChangedListener{
fun onFrameChanged(frameId: Int)
}
}
