Rendering math or related science symbols in android app is a fully clientside phenomena. We can accomplish this with the following steps in Android Studio using Java: 1. Include a latex library in your build.gradle file(if you are using android studio). The latex library I used for this purpose is from katex. We have to just add the following line inside the dependencies section of the app level build.gradle file:

dependencies {
    …………………………………………….
    implementation 'in.hourglass.mathrender:katexmathview:1.0.3'
}

2. Now sync the gradle file. 3. Now in the activity we have to import the following:

import katex.hourglass.in.mathlib.MathView;

4. Next, we have to instantiate MathView in the onCreate method of the Activity.

        MathView mathView = new MathView(getApplicationContext());

It accepts the current application context as its argument. 5. Set its different parameters like,

mathView.setTextSize(fsize);
mathView.setViewBackgroundColor(android.R.color.background_light);
mathView.setTextColor(ContextCompat.getColor(getApplicationContext(), android.R.color.black));

6. Now render the text containing mathematics(maths) and related science symbols with the following:

		
mathView.setDisplayText(str);		//str contains the string along with or without math/science symbols.

7. Finally add this MathView instance to a layout or other viewgroup. The below method in java implements the above steps:

private void putMathSymbols(LinearLayout parent,String str, int fsize){
        MathView mathView = new MathView(getApplicationContext());
        mathView.setTextSize(fsize);
        mathView.setViewBackgroundColor(android.R.color.holo_blue_light);
        mathView.setTextColor(ContextCompat.getColor(getApplicationContext(), android.R.color.white));	// not essential
        mathView.setDisplayText(str);
        parent.addView(mathView);
    }

INSTRUCTION: The text (str in the above example) that contains maths or related science symbols, must be enclosed by two ‘\$’ signs. i.e. the text should be preceded by a ‘\$’ sign and must be followed by another ‘\$’ sign. To print special characters or symbols we have to put the correct notation preceded with an escape character ‘\’(back slash}. For example: "The cube of 5 i.e. \$5^3\$ brings out 125" => this will print: "The cube of 5 i.e. $5^3$ brings out 125". Example 2: \$X^2 + Y^2 = Z^2\$ => This will print: $X^2 + Y^2 = Z^2$ Example 3: \$\sqrt{X^2 + Y^2}\$ => This will print: $\sqrt{X^2+Y^2}$ Example 4: This is \$\theta$ => This will print: This is θ.