Katex

A KhanAcademy Katex based Library for Rendering math faster in various Android Devices. This a View which is created from extending webview. This view allows you to render latex in your android devices. It can load normal text, text with latex and latex alone. The only thing you have to make sure is your latex should be enclosed inside either $your latex formula$ or $$your latex formula$$. This will also allow you to beautify your formula text by setting color and text size.

Accepted Inputs

$x=\frac{1+y}{1+2z^2}$

or

 $$x=\frac{1+y}{1+2z^2}$$

or

 sum of ratios =4+3=7 $=\frac{4}{7}\times560=320$

or

 Data Included inside HTML TAGS
 
 <p>If <span class="latexEle" data-latex="x:35::48:60">$x:35::48:60$</span><span>  </span>, find the value of <span class="latexEle" data-latex="x">$x$</span><span>  </span>.</p>

Setup

Dependencies
{
  compile 'in.hourglass.mathrender:katexmathview:1.0'
}

Attributes supported

 setTextColor          -> Allows you to beautify your latex with specific color of your choice
 setTextSize           -> Allows you to set text size of the latex displayed on screen
 setViewBackgroudColor -> set the background color of the view.
 setClickable  
   i.True     -> Setting this to true will allow KatexMathview to act as Textview and it will also intercept parent layout touchevent useful to register click 
   when this view is used with List,Recyclerview.
   ii.False   -> Setting this to false will make katexMathvview act as an webview with zoom in controls etc. 

Adding to your XML Layout

    <katex.hourglass.in.mathlib.MathView
      app:setTextColor="@color/primary"
      app:setTextSize="14sp"
      app:setClickable="true"
      app:setText="@string/single_formula"
      android:layout_gravity="center"
      android:layout_width="match_parent"
      android:layout_height="wrap_content" />

Adding at runtime

    MathView mathView = new MathView(getApplicationContext());
    mathView.setClickable(true);
    mathView.setTextSize(14);
    mathView.setTextColor(ContextCompat.getColor(getApplicationContext(),android.R.color.white));
    mathView.setDisplayText(getResources().getString(R.string.runtime_formula));
    mathView.setViewBackgroundColor(ContextCompat.getColor(getApplicationContext(),android.R.color.black));
    parent_layout.addView(mathView);

Demo

You can have look into complete Demo project code in here.

License

 The MIT License (MIT)

 Copyright (c) 2017 Lingaraj Sankaravelu

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.