cava | Cross-platform Audio Visualizer | Data Visualization library

I post this question because I've put in my code a DrawerLayout and when I play my app on my phone the icon (3 lines) of the DrawerLayout dosen't appear.

Here is my java code : MainActivity.java

I'm trying to create a "fake" drag animation on a chart. The goal is to allow the user to manually edit points from a graph by dragging them.

The idea is fairly simple: I put a canvas on top of the graph and upon clicking on one of the graph's point, a red circle becomes visible on the clicked mark value, as well as 2 lines coming from the previous and next graph point. I "just" have to set the opacity of each shape from 0 to 1 and specify their position (XAML code):

I've been searching for help but was not able to find anything for what I needed.. I have something that looks like this:

So when the user input ingredients, it gets you the recipes online. Here, I want to fix the text box as it only shows one line. When I print out the output, it includes a new line and it looks nicer but once I insert this into the entry box, it ignores all new lines and spaces. This is my code for the interface:

I wanna use Interctive-Cavas to customize Google NestHub by HTML, CSS and Js.

In Example : https://medium.com/voice-tech-podcast/google-assistant-interactive-canvas-c83a959bdea0

I would like for each ver who have the attribute 'fmc' to get the text inside the tag part.

so for my example just to return two ver (30 & 54)

the first loop print nothing. I need help to improve the function I am writing.