How to Display Math Equations in Android Using MathView

How to Use MathView in Android (Java + XML)

🧮 Introduction

This tutorial shows how to use MathView in your Android app to display LaTeX-style mathematical equations. This is useful for educational or scientific apps.

📦 Java Imports & Class Structure

import com.zanvent.mathview.MathView;
import android.widget.EditText;
import android.widget.Button;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;

🧠 Java Code (MainActivity.java)

public class MainActivity extends AppCompatActivity {

    private EditText edittext1;
    private Button button1;
    private MathView textview1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        edittext1 = findViewById(R.id.edittext1);
        button1 = findViewById(R.id.button1);
        textview1 = findViewById(R.id.textview1);

        button1.setOnClickListener(v -> {
            textview1.setText(edittext1.getText().toString());
        });
    }
}

🧾 XML Layout (res/layout/main.xml)

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp">

    <EditText
        android:id="@+id/edittext1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Enter math expression (e.g. \frac{a}{b})"/>

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Display Math"/>

    <com.zanvent.mathview.MathView
        android:id="@+id/textview1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"/>

</LinearLayout>

✅ Example LaTeX Inputs

• \frac{1}{2} ➝ ½
• \sqrt{16} ➝ √16
• x = {-b \pm \sqrt{b^2-4ac}}/{2a}

⚠️ Notes

• Ensure the MathView library is properly added in your project.
• Use double backslashes \\ if setting raw LaTeX from XML strings.

📦 Library Reference

If you're using com.zanvent.mathview.MathView, make sure to include the library in your build.gradle file or copy required files if it's a local lib.

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