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<!DOCTYPE html>
<html>
<head>
<title>How to build the MuPDF library for Android</title>
<link rel="stylesheet" href="style.css" type="text/css">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<header>
<h1>How to build the MuPDF library for Android</h1>
</header>
<nav>
<a href="http://mupdf.com/index.html">ABOUT</a>
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<article>
<p>
The MuPDF library in Android is based on JNI to access the native C library
through a layer of Java classes. The MuPDF Java library provides platform
independent (i.e. both Android and desktop Java) low level access to MuPDF
functionality.
<p>
The MuPDF Java library does not provide any Android specific components
or widgets -- build those yourself or use one of the example viewers as
a start!
<p>
In order to use the MuPDF library in Android, you must thus add two components
to your build system: the JNI library, and the Java library.
<h2>Setting up the MuPDF subproject</h2>
<p>
Set up your Android project as you wish, and then add the mupdf repository
as a directory somewhere in your project. If you're using git, you can
use a submodule:
<pre>
$ git submodule add git://git.ghostscript.com/mupdf.git libmupdf
$ cd libmupdf
$ git submodule update --init
</pre>
<p>
You can also unpack a release tarball archive in your source directory.
<p>
We'll assume you name the mupdf project directory 'libmupdf'.
<p>
Use your host compiler to run the 'generate' step in the mupdf project:
<pre>
$ make -C libmupdf generate
</pre>
<h2>Adding the JNI library</h2>
<p>
Add an NDK-build step to your project, using the Android.mk file from mupdf.
<p>
Add an externalNativeBuild section in the android section in the
build.gradle file:
<pre>
android {
externalNativeBuild {
ndkBuild.path 'libmupdf/platform/java/Android.mk'
}
}
</pre>
<h2>Adding the Java library</h2>
<p>
You'll also need to include the Java classes that bind to the JNI library.
<p>
Add the 'libmupdf/platform/java/src' directory to the list of source
directories in the build.gradle file:
<pre>
android {
sourceSets {
main {
java.srcDirs 'src/main/java', 'libmupdf/platform/java/src'
}
}
}
</pre>
</article>
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