There are many. If the question owner only needs what is in the question, it is very simple to write it yourself. Just customize a View to draw the values ​​​​in the array/list on the screen in sequence.
If you have other needs, check out this open source project compiled by Trinea:

14. GraphView

1. MPAndroidChart
   Powerful chart drawing tools, supporting line charts, area charts, scatter charts, time charts, column charts, bar charts, pie charts, bubble charts, donut charts, range (high to low) bar charts, network charts, and Combination of various graphs; supports drag and drop of graphs; supports Android 2.2 and above, supports horizontal and vertical axis scaling, multi-finger zooming, animation, highlighting, saving to sdcard, and reading charts from files
   Project address: https://github.com/PhilJay/MPAndroidChart
   Demo address: https://play.google.com/store/apps/details?id=com.xxmassdeveloper.mpchartexample
   Demo project: https://github.com/PhilJay/MPAndroidChart/tree/master/MPChartExample
   Rendering:
   
   
   
   
   
   Online demonstration: https://www.youtube.com/watch?v=ufaK_Hd6BpI

2. achartengine
   Powerful chart drawing tools, supporting line charts, area charts, scatter charts, time charts, column charts, bar charts, pie charts, bubble charts, donut charts, range (high to low) bar charts, dial charts/tables , cubic line chart and combination of various charts
   Project address: https://code.google.com/p/achartengine/
   Rendering:
   http://www.achartengine.org/dimages/sales_line_and_area_chart.png
   http://www.achartengine.org/dimages/temperature_range_chart.png
   http://www.achartengine.org/dimages/combined_chart.png
   http://www.achartengine.org/dimages/budget_chart.png
   Official website: http://www.achartengine.org/
   APP examples: WordPress Android, Google Analytics

3. GraphView
   View for drawing charts and graphs, which can be used to display curved graphs, bar graphs, and wave graphs on Android
   Project address: https://github.com/jjoe64/GraphView
   Demo project: https://github.com/jjoe64/GraphView-Demos
   APP examples: WordPress Android, Google Analytics

4. HoloGraphLibrary
   Draw status diagrams, bar charts, and pie charts
   Project address: https://bitbucket.org/danielnadeau/holographlibrary/src
   Document introduction: https://bitbucket.org/danielnadeau/holographlibrary/wiki/Home

5. XCL-Charts
   XCL-Charts draws various charts based on the native Canvas. When designing, we try our best to provide users with sufficient customization capabilities while ensuring development efficiency. It is therefore easy to use and has quite flexible customization capabilities. Currently supports 3D/non-3D column chart (Bar Chart), 3D/non-3D pie chart (Pie Chart), stacked bar chart (Stacked Bar Chart), area chart (Area Chart), line chart (Line Chart), Spline Chart, Donut Chart, Nightingale Rose Chart, Dial Chart, Gauge Chart, Radar Chart, Circle Chart ( Circle Chart) and other charts. Other features include support for chart scaling, gesture movement, animation display effects, high-density column display, customized chart demarcation lines, mixed display of multiple charts, and switching between different types of charts from the same data source.
   Project address: https://github.com/xcltapestry/XCL-Charts
   Demo address: https://github.com/xcltapestry/XCL-Charts/blob/master/XCL-Charts-demo/bin/XCL-Charts-demo.apk?raw=true

6. EazeGraph
   Android chart library, supports bar charts, hierarchical bar charts, pie charts, linear charts
   Project address: https://github.com/blackfizz/EazeGraph
   Demo address: https://play.google.com/store/apps/details?id=org.eazegraph.app

7. WilliamChart
   A library for drawing charts that supports three chart types: LineChartView, BarChartView and StackBarChartView, and supports Android 2.2 and above systems.
   Project address: https://github.com/diogobernardino/WilliamChart
   Demo address: https://play.google.com/store/apps/details?id=com.db.williamchartdemo
   Demo project: https://github.com/diogobernardino/WilliamChart/tree/master/sample
   Rendering:

8. HelloCharts for Android
   Supports line charts, bar charts, pie charts, bubble charts, and combination charts; supports preview, zoom in, and scroll, and some charts support animation; supports Android 2.2 and above
   Project address: https://github.com/lecho/hellocharts-android
   Demo address: https://play.google.com/store/apps/details?id=lecho.lib.hellocharts.samples
   Online demonstration: https://www.youtube.com/watch?v=xbSBjyjH2SY
   

This kind of androidplot?

Html5 is not required, usually you draw directly on the canvas.
There are also many mature chart libraries..
Just list 2:

XCL-Charts
https://github.com/xcltapestry/XCL-Charts

MPAndroidChart
https://github.com/PhilJay/MPAndroidChart

There are some open source tools. If you want to implement it yourself, you can use the tools provided by the android.graphics package to draw.
The key is to define several classes like this:
1. Represents the data model of each discount, which can add, delete, modify and check the data. This part is mainly about designing the data structure
2. The polyline drawing class contains a draw(Canvas canvas, Paint paint) method, and the drawing is completed within the method
3. The data model of the chart includes references to the polyline to be drawn, as well as some coordinate system attributes, etc.
4. Customize the View to present the above icon, rewrite the onDraw(Canvas canvas) method, and call the draw method of each polyline one by one in this method
1 and 2, and 3 and 4 can be combined and defined as one class, which not only manages data, but also contains a method responsible for drawing.
The specific implementation is more complicated than the above, but the general idea is this.