For more information, see how to connect a device or create an AVD. Content and code samples on this page are subject to the licenses described in the Content License. Android Studio. Download What's new User guide Preview. Meet Android Studio. Manage your project.
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Integrate Android Performance Tuner. Output audio. Manage memory. Use prebuilt or turnkey game engines. Develop with Defold. Develop with Godot. Develop with Unity. Use Android Performance Tuner. Game best practices. Maximize device availability. Art assets. OpenGL and Vulkan. Game Mode. Best practices. Building effective unit tests.
Automating UI tests. Testing app component integrations. Android Vitals. Optimizing for Battery Life. System tracing. Build and test apps for accessibility. Advanced topics.
Protecting against security threats with SafetyNet. Build for Billions. Build for Enterprise. App feedback. Device management.
Dedicated devices. Android versions. Android Developers. Each Android app lives in its own security sandbox, protected by the following Android security features: The Android operating system is a multi-user Linux system in which each app is a different user. By default, the system assigns each app a unique Linux user ID the ID is used only by the system and is unknown to the app.
The system sets permissions for all the files in an app so that only the user ID assigned to that app can access them. Each process has its own virtual machine VM , so an app's code runs in isolation from other apps. By default, every app runs in its own Linux process. The Android system starts the process when any of the app's components need to be executed, and then shuts down the process when it's no longer needed or when the system must recover memory for other apps.
However, there are ways for an app to share data with other apps and for an app to access system services: It's possible to arrange for two apps to share the same Linux user ID, in which case they are able to access each other's files. To conserve system resources, apps with the same user ID can also arrange to run in the same Linux process and share the same VM. The apps must also be signed with the same certificate.
An app can request permission to access device data such as the device's location, camera, and Bluetooth connection. The user has to explicitly grant these permissions. When the user clicks a deep link, a disambiguation dialog might appear.
This dialog allows the user to select one of multiple apps, including your app, that can handle the given deep link.
Figure 2 shows the dialog after the user clicks a map link, asking whether to open the link in Maps or Chrome. Figure 2. The disambiguation dialog. Web links are deep links that always use the HTTP schema. On Android 12 and higher, clicking a web link always shows content in a web browser.
On devices running previous versions of Android, if your app or other apps installed on a user's device can also handle the web link, users might not go directly to the browser. Instead, they'll see a disambiguation dialog similar to the one that appears in figure 2. Android App Links , available on Android 6. This attribute allows your app to designate itself as the default handler of a given type of link.
So when the user clicks on an Android App Link, your app opens immediately if it's installed—the disambiguation dialog doesn't appear.
If the user doesn't want your app to be the default handler, they can override this behavior from the app's settings. One of the requirements for Android App Links is that you verify ownership of your domain through one of our website association methods.
As an alternative to the documentation linked above, the Android App Links Assistant is a tool in Android Studio that guides you through each of the steps required to create Android App Links. Content and code samples on this page are subject to the licenses described in the Content License. App Basics. Build your first app.
App resources. Resource types. App manifest file. Device compatibility. Multiple APK support. Tablets, large screens, and foldables. Build responsive UIs. Build for foldables.
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See all. Read up on the latest. Android Enterprise Art of Control digital event. Learn More. Read the full article. Android 11 Go edition : New features coming to more devices. Thanks for visiting. It should take about a minute.
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