SimpleReader is an EPUB and PDF reader written in Java and Kotlin for Android.

• Custom fonts & font size
• PDF support
• Bookmarks
• Search
• Highlighting
• Dictionary (online only)

First clone the simplereader library to your project:

mkdir libs/simplereader
cd libs/simplereader
git clone https://github.com/Yahoo-Mike/simplereader.git .

Add following dependency and jitpack.io repo to your project settings.gradle.kts file. Jitpack.io is required for the latest version of Readium to compile (3.1.2):

dependencyResolutionManagement {
    repositories {
        ...
        maven { url = uri("https://jitpack.io") }
    }
}

includeBuild("libs/simplereader")

Add following dependency to your app module build.gradle file:

dependencies {
    ...
    implementation("com.simplereader:simplereader:1.0.0")
    ...
}

This library uses Java version 17, so make sure all of the compileOptions and kotlinOptions in your app's build.gradle.kts are set to version 17, not version 11. If you forget to do this, then you might get an error message like this:

Invalid build configuration. Attempt to create a global synthetic for 'Record desugaring' without a global-synthetics consumer.

If the Readium libraries insist on being desugared, then in the :app build.gradle.kts:

android {
    compileOptions {
        isCoreLibraryDesugaringEnabled = true
   }
}

dependencies {
  coreLibraryDesugaring( "com.android.tools:desugar_jdk_libs:2.1.5" )
}

or in the :app build.gradle (groovy):

android {
    compileOptions {
        coreLibraryDesugaringEnabled true
   }
}

dependencies {
  coreLibraryDesugaring "com.android.tools:desugar_jdk_libs:2.1.5"
}

Get singleton object of SimpleReader:

SimpleReader reader = SimpleReader.getInstance();

or for kotlin

val reader = SimpleReader.getInstance()

openBook() To open a book, call with the fully-qualified filename. Only *.epub abd *.pdf are supported.

reader.openBook("/data/user/0/com.myapp/files/illiad.epub")

serverSettings() Displays a bottom sheet for entering the server settings. If user successfully changes the settings, a full sync will be kicked off when user dismisses dialog or presses "Sync Now". Host should call like this from a Fragment child:

reader.serverSettings(parentFragmentManager)

Or like this from an AppCompatActivity child:

reader.serverSettings(requireActivity().supportFragmentManager)

• SimpleReader is based on a fork of the old FolioReader project.
• SimpleReader uses the Readium modules to parse and render publications
• SimpleReader uses dictionaryapi.dev for dictionary definitions

SimpleReader is available under the BSD license. See the LICENSE file.