Drawing of Fragment is lagging my loading animation

Question

I am using AnimationDrawable to show loading. Something like this:

<animation-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/loader_00000" android:duration="12" />
    <item android:drawable="@drawable/loader_00001" android:duration="12" />
    <item android:drawable="@drawable/loader_00002" android:duration="12" />
    ...
</animation-list>

I am using Fragment. I have this animation in ImageView as src and I am showing it above the content of fragment_layout.

I am running animation like this:

(image_view.drawable as AnimationDrawable).start()

Animation works quite well. But I am loading stuff from a server and populating it to components below animation. I am loading stuff in a background thread. Using CoroutineScope with Dispatchers.IO. However, populating of stuff is causing lagging of my animation. How can I improve it to not lag? Is it possible? Is there a better approach?

First of all what you are doing seems normal, BUT: Performance questions are particularly hard to answer, without the whole picture, e.g. the exact images, the code to populate the fragment and the device etc. I recommend that you use the [profiler](https://developer.android.com/studio/profile/android-profiler) to analyse the problem and to see what code makes you break the 16ms barrier. If you want a profound answer to your problem please provide a [mcve](https://stackoverflow.com/help/mcve) — leonardkraemer, Apr 18 '19 at 11:47

Drawing of Fragment is lagging my loading animation

0 Answers0