The first parameter is the current row index. This method has three input parameters.So we should reduce such inflate layout XML code.

But the inflate layout XML file process is resource consumed. This method will inflate a View object and return it.Each time ListView shows a row, it will call the data adapter’s getView(int itemIndex, View itemView, ViewGroup viewGroup) method.

Only Inflate The View When It Is Null In getView() Method.

So there are below methods that can be used to improve ListView performance.

From the above picture, we can see that ListView will cache scraped view objects which can be used later, this will decrease view creation times and reduce view creation consumed resources.

Below picture is the diagram of how the ListView behaves.

Make it less cost memory and CPU resources. So the key to improving ListView performance is to make the getView() method run as quickly as possible.So you may find the ListView performance decreased very fast if the list data is so huge. When there are so many list data that need to be displayed in the ListView, the getView() method will be called so many times and very frequently.

Android studio listview add view