Android may have started with the mantra that developers are allowed to do anything as long as they can code it, but things have changed over the years as security and privacy became higher priorities. Every major update over the last decade has shuttered features or added restrictions in the name of protecting users, but some sacrifices may not have been entirely necessary. Another Android 11 trade-off has emerged, this time taking away the ability for users to select third-party camera apps to take pictures or videos on behalf of other apps, forcing users to rely only on the built-in camera app.
At the heart of this change is one of the defining traits of Android: the Intent system. Let's say you need to take a picture of a novelty coffee mug to sell through an auction app. Since the auction app wasn't built for photography, the developer chose to leave that up to a proper camera app. This where the Intent system comes into play. Developers simply create a request with a few criteria and Android will prompt users to pick from a list of installed apps to do the job.
Camera picker on Android 10.
However, things are going to change with Android 11 for apps that ask for photos or videos. Three specific intents will cease to work like they used to, including: VIDEO_CAPTURE, IMAGE_CAPTURE, and IMAGE_CAPTURE_SECURE. Android 11 will now automatically provide the pre-installed camera app to perform these actions without ever searching for other apps to fill the role.
Starting in Android 11, only pre-installed system camera apps can respond to the following intent actions:
android.media.action.VIDEO_CAPTURE
android.media.action.IMAGE_CAPTURE
android.media.action.IMAGE_CAPTURE_SECURE
If more than one pre-installed system camera app is available, the system presents a dialog for the user to select an app. If you want your app to use a specific third-party camera app to capture images or videos on its behalf, you can make these intents explicit by setting a package name or component for the intent.
Google describes the change in a list of new behaviors in Android 11, and further confirmed it in the Issue Tracker. Privacy and security are cited as the reason, but there's no discussion about what exactly made those intents dangerous. Perhaps some users were tricked into setting a malicious camera app as the default and then using it to capture things that should have remained private
