Dropbox offers native SDKs for iOS, OS X and Android. This page includes instructions on how to download and set up SDKs for each platform, as well as links to SDKs provided by the community for other environments.
Before building an app using the Sync API, you'll need to create an app with the App folder or File type permission in the App Console (Full Dropbox permission is not supported with the Sync API). Visit the developer guide for more information on the different types of permissions.
The Sync API requires Android API 10 or later.
Download the Sync API Android SDK linked above. The necessary libraries are located in the libs directory of the SDK package. The .jar file in the libs directory contains the Java classes which make up the Android SDK. The subdirectories contain the native components, built for each supported Android platform. You can safely omit some of them if you know which platforms your app needs to support ("armeabi" is the most common).
To allow Eclipse to display Javadoc documentation for SDK classes, you can create a dropbox-sync-sdk-android.jar.properties file in your project's libs directory containing a path to the javadoc directory of the Android SDK package as follows.
# Replace the path below with the correct path on your system doc=../../../dropbox-sync-sdk-android/javadoc
Once you've added the SDK to your project, jump to the "Required changes to AndroidManifest.xml" section to complete the setup.
The following instructions apply to version 0.9.2 of Android Studio and version 0.14.1 of the Android tools plugin for Gradle. If you're using a different version, you may need to modify some of the steps.
Read on for other changes you need to make to your project before using the SDK.
The Sync API needs permission to access the Internet. Additionally, a few SDK components need to be published so that Android can find them. Here are the two snippets to add to your AndroidManifest.xml.
<uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<activity android:name="com.dropbox.sync.android.DbxAuthActivity" /> <activity android:name="com.dropbox.client2.android.AuthActivity" android:launchMode="singleTask" > <intent-filter> <data android:scheme="db-APP_KEY" /> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.BROWSABLE" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> <service android:name="com.dropbox.sync.android.DbxSyncService" android:enabled="true" android:exported="false" android:label="Dropbox Sync" />
If you want to see the Sync API in action, check out the examples directory in the SDK bundle. There you can find a simple "Hello Dropbox" example that demonstrates the code in this tutorial, as well as a note-taking app that uses the Sync API to save notes to Dropbox and alerts you if the notes are updated. This app will also sync notes with the notes example included in the SDKs for other platforms. Here's how to build and run a sample app.