• Minimum API: 16 (using AndroidX)
• Compile API: 30
• Recommended target API: 30
• The latest version of Android Studio.
• If your app is using AndroidX you will also need to add android.useAndroidX=true and android.enableJetifier=true in your gradle.properties file. You can learn more about this here .

In this quick start tutorial you will create a simple Android app that will open a PDF document stored in your Android project by using DocumentActivity. The sample code for this tutorial is available at our GitHub repository.

1. On the Android welcome screen, click Start a new Android Studio project:

2. Create a new Android Studio project with an Empty Activity and set the minimum SDK to API 16. You can learn more about PDFTron's system requirements here .

3. For simplicity, we'll integrate the PDFTron SDK into our project using Gradle. You can learn more about how Gradle is used in Android Studio at the Gradle guides.

   Find your gradle.properties file in the root folder of your project and add your license key to this file:

   PDFTRON_LICENSE_KEY=INSERT_COMMERCIAL_LICENSE_KEY_HERE_AFTER_PURCHASE

4. Now open the settings.gradle file located in your project's root directory and add the PDFTron Maven repository:

   dependencyResolutionManagement {
       repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
       repositories {
           google()
           mavenCentral()
           maven {
               url "https://pdftron-maven.s3.amazonaws.com/release"
           }
           jcenter() // Warning: this repository is going to shut down soon
       }
   }

5. Then in your app module's build.gradle file (usually app/build.gradle) add the following:

   android {
       defaultConfig {
           ...
           multiDexEnabled true
           vectorDrawables.useSupportLibrary = true
           manifestPlaceholders = [pdftronLicenseKey:PDFTRON_LICENSE_KEY]
       }
   }
   
   dependencies {
       ...
       implementation "com.pdftron:pdftron:9.3.1"
       implementation "com.pdftron:tools:9.3.1"
   
       implementation 'androidx.multidex:multidex:2.0.1'
   }

   You should also sync your project when you make changes in your Gradle files.

   If you encountered any issue with gradle sync, check out the Troubleshooting guide.

6. In order to support all the features in DocumentActivity, we need to include the Android permissions listed in the table below. However if you would like to disable certain features and customize your document viewer, you should leave out unnecessary permissions. You can learn more about permissions here .

   Feature	Relevant permission
   Accessing documents in local storage, including: Reading documents in local storage Writing to PDF files (including annotation creation) in local storage Creating PDF files in local storage	android.permission.WRITE_EXTERNAL_STORAGE
   Opening a PDF from a URL HTML to PDF conversion Realtime collaboration	android.permission.INTERNET
   Creating sound annotations	android.permission.RECORD_AUDIO

   In this sample we'll add all the permissions to AndroidManifest.xml so we can support all the features in the viewer. In this file, we'll also need to add a reference to our PDFTron license key. The resulting AndroidManifest.xml file should look something like this:

   <?xml version="1.0" encoding="utf-8"?>
   <!-- Include existing attributes in manifest -->
   <manifest>
   
       <!-- Required permissions are added here -->
       <uses-permission android:name="android.permission.INTERNET"/>
       <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
       <uses-permission android:name="android.permission.RECORD_AUDIO" />
   
       <!-- Add multidex support and enable largeHeap.
            Also enable usesCleartextTraffic in application attributes if you are 
            working with HTTP files. If you are only working with HTTPS files, this is not required.-->
       <!-- Include existing attributes in application -->
       <application 
           android:name="androidx.multidex.MultiDexApplication"
           android:largeHeap="true"
           android:usesCleartextTraffic="true">    
           
           <!-- Add license key in meta-data tag here. This should be inside the application tag. -->
           <meta-data
               android:name="pdftron_license_key"
               android:value="${pdftronLicenseKey}"/>
               
           <!-- Document viewer activity declaration-->
           <activity 
               android:name="com.pdftron.pdf.controls.DocumentActivity"
               android:configChanges="keyboardHidden|orientation|screenSize|screenLayout|smallestScreenSize"
               android:windowSoftInputMode="adjustPan"
               android:theme="@style/PDFTronAppTheme"/>
       </application>
   </manifest>

7. If you would like to customize the appearance of the viewer activity, define PDFTronAppTheme (referenced by DocumentActivity in AndroidManifest.xml) in res/values/styles.xml:

   <!-- Include existing attributes in resources -->
   <resources>
       <!-- Custom theme that will be used by the document reader -->
       <style name="PDFTronAppTheme" parent="PDFTronAppThemeBase">
           <item name="colorPrimary">@color/app_color_primary_day</item>
           <item name="colorPrimaryDark">@color/app_color_primary_dark_day</item>
           <item name="colorAccent">@color/app_color_accent</item>
           <!-- Action bar -->
           <item name="actionModeBackground">?attr/colorPrimary</item>
           <item name="windowActionModeOverlay">true</item>
       </style>
   </resources>

   You can learn more about this in the customize the viewer's theme guide .

8. Now add a PDF file to the res/raw folder of your project (you can use our sample here) and call it sample.pdf, we are going to reference this file in the next step.

9. In onCreate of your launcher activity, call DocumentActivity.openDocument(Context, int) to open this PDF file with the document reader:

   // ...
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       // Open our sample document in the 'res/raw' resource folder
       DocumentActivity.openDocument(this, R.raw.sample);
   }

   This launches DocumentActivity with our sample PDF document with default viewer configurations, and you should see the following:

   You can also view your document in DocumentActivity by specifiying a local file path, an HTTP/HTTPS url, or a Content Uri:

   // Open a local document given a path
   private void openLocalDocument(Context context, String localFilePath) {
       final Uri localFile = Uri.fromFile(new File(localFilePath));
       DocumentActivity.openDocument(context, localFile);
   }
   
   // Open a document given a Content Uri
   private void openContentUriDocument(Context context, Uri contentUri) {
       DocumentActivity.openDocument(context, contentUri);
   }
   
   // Open a document from HTTP/HTTPs
   private void openHttpDocument(Context context, String url) {
       final Uri fileLink = Uri.parse(url);
       DocumentActivity.openDocument(context, fileLink);
   }
   
   // Open a document stored in the 'src/main/res/raw' folder
   private void openRawResourceDocument(Context context, @IdRes int fileResId) {
       DocumentActivity.openDocument(context, fileResId);
   }

   Please note that any changes made to files opened from res/raw will not be saved on the disk.

   The source code for this tutorial can be found on our GitHub repository.

• Customize your document reader by using ViewerConfig .