Leverage Multi-Window and Exercise Embedding | by Roberto Orgiu | Android Builders | Mar, 2023 | Saga Tech

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With Android 12L, we’re striving to enhance apps on massive screens, and with Android 13 we’re introducing extra new alternatives to reinforce the expertise you may present to your customers. In a world with extra display screen house, multitasking is essential, and listed here are two methods you may reap the benefits of it:

You most likely already know that your customers can simply entry multi-window mode with a easy gesture, however you may launch multi-window mode your self utilizing the Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT flag within the intent used to launch the goal software:

This operate will begin OtherActivity adjoining to yours in multi-window, so you may reap the benefits of multitasking. One phrase of recommendation: it will work on all units working Android 7 and above, and can cut up the display screen into two halves, both vertically or horizontally, relying on the system. Additionally, beginning with Android 12L, utilizing the resizableActivity="true"flag won’t choose ​​out of getting a number of home windows.

How multi window seems on telephones and tablets

A lot of apps means a number of architectures, however there could also be circumstances the place it is advisable to launch one other app from yours for various and worthwhile causes. For instance, your corporation might deal with totally different providers that may work collectively, resembling a file supervisor and spreadsheet app, information studying and sports activities information app, media streaming and chat app, and so forth.

You are most likely already aware of embedding actions (in case you’re not, be sure you take a look at this speak), and in Android 13, we launched the power to launch actions from different apps as in the event that they originated from your individual app.

As a result of embedding actions from different apps makes them seem like a part of your app, there are extra safety necessities for utilizing this type of embedding. First, permitting the embedding of actions in apps is an elective function, which implies that the embedded app should take steps to combine.

The built-in software can select to:

  • enable any and all purposes to embed the exercise and carry out any belief checks at runtime
  • embedding an inventory of certificates in XML assets and Android will solely enable apps signed with a kind of certificates to embed it

Within the pattern on GitHub, you will see tips on how to enable any app to embed yours, and tips on how to embed an exterior app into yours. However on this instance, no safety test will likely be carried out because the purpose of this submit is to elucidate how the API works and how one can repair any points which will come up.

Let’s begin from the app you need to embed. To permit everybody to embed an exercise, it is advisable to make the exercise seen from outdoors the APK. Due to this fact, you should set the exported flag to true, and it is advisable to add the next line to the manifest, so it appears like this:

The final line is the one which tells Android that your exercise could be embedded.

Observe: Bear in mind, for the needs of this weblog submit, you aren’t configuring any safety measures.

Now that you’ve your app able to embed, it is time to embed it in one other app of yours!

For the sake of readability, you may consider the embedded app because the visitor and the embedded app because the host.

The very first thing it is advisable to do is add the next dependencies to the host software construct.gradlearchive:

Subsequent, it is advisable to create a cut up configuration that means that you can outline what Exercise you need to embed utilizing your certified title:

He SplitPairRule defines the conduct of the 2 actions when one ends, guaranteeing the navigation you need. On this case, if the host’s exercise ends, the visitor can even finish, nevertheless it will not be the identical if the visitor ends first. The rule then defines the breakpoint to show the actions aspect by aspect, which is 600dp on this case. Lastly, it defines the division relationship from 0 to 1; 0.3 implies that the host exercise will occupy 30% of the obtainable house on the display screen and the visitor exercise will occupy the remainder of the obtainable house.

He SplitPairFilter defines which actions are concerned, utilizing the straightforward title for the host and the certified title for the visitor.

Moreover, you may declare a placeholder that will likely be offered earlier than the visitor exercise begins or after it ends, utilizing the SplitPlaceholderRule:

At this level, it is advisable to create the startup initializer that may load the cut up configuration:

Then it is advisable to add the initializer to the AndroidManifest host software file to make it discoverable:

The very last thing you need to do is name the visitor. Exercisefrom the host software:

For extra info on embedding actions, take a look at the pattern on GitHub, the Android Dev Summit ’22 video, and the exercise embedding developer information.

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Leverage Multi-Window and Activity Embedding | by Roberto Orgiu | Android Developers | Mar, 2023