如何只需点击一下即可显示搜索结果？

I'm creating an Android app that has a search feature that search an online database. When I want to search something though, I have to double click on the search button for the correct results to be displayed. I believe the issue is with the fact that I'm using an Asynctask function in the onClick for the button. This is my onClick:I'm creating an Android app that has a search f