This means that developers can simply update the contents of recycled Non-visible views-called “ScrapViews” in Android’s source code-as you panĪround. Inflations still involve going through a tree of special XML blocks codeĪnd instantiating all respective views. The reason for 1 is simple: layout inflations are expensive operations code.Īlthough layout files are compiled into binary form for more efficient

It only paints and lays out children that are (or are about to become).

It tries to do as few view inflations as possible.

ListView is designed for scalability and performance. I’ve added some Android source code pointers for the curious readers willing to I’m assuming you’re already familiar with ListViews and understand the This post is an attempt to summarize the ones I found most Noticed that the performance tips for ListViews are a bit scattered inĭifferent sources. I’ve been messing around with Android-based code for a few months now while Performance Tips for Android's ListView April 05, 2012

Android studio listview below textview