Android Things Intent For Boot

When I reboot after deploying an application to Android Things the application doesn't start. Is there a specific intent to start an application on boot?

Solution 1:

If your Android Things device has multipleapplicationsinstalled that all have this intent filter in the manifest:

<intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.HOME"/><categoryandroid:name="android.intent.category.DEFAULT"/></intent-filter>

( < DP8 used to need IOT_LAUNCHER that has been deprecated)

Then your application will not start by default, instead the Intent Chooser dialog will be shown and the system will wait for user input to select which app to run. (This happens wether or not you have an actual display plugged in. If you don't have a display it might appear as tho the device is just hanging.)

I wrote a script here: https://gist.github.com/blundell/7c0c3bb17898b28fe8122b0dc230af50 that will uninstall all applications that have the above Intent Filter so that you can start again and only have 1 application installed - therefore this application will start on boot.

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With the latest version of AndroidThings the IntentChooser will not be shown anymore, however the problem can persist as one of the apps installed is selected to open and the others do not.

Solution 2:

Add to AndroidManifest.xml

Developer Preview 0.8 and greater (New Style)

<intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.HOME"/><categoryandroid:name="android.intent.category.DEFAULT"/></intent-filter>

Before Developer Preview 0.8 (Old Style)

<intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.IOT_LAUNCHER"/><categoryandroid:name="android.intent.category.DEFAULT"/></intent-filter>

See Android Things Release Candidate 16 April 2018

Solution 3:

The following intent-filter needs to be added to AndroidManifest.xml

<intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.IOT_LAUNCHER"/><categoryandroid:name="android.intent.category.DEFAULT"/></intent-filter>

Solution 4:

Have you tried their demo app? Try out this first before writing your own app. This should work as expected. Later change as you want.

Just don't remove this part from the AndroidManifest.xml of your code.

<!-- Launch activity automatically on boot --><intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.IOT_LAUNCHER"/><categoryandroid:name="android.intent.category.DEFAULT"/></intent-filter>

Solution 5:

To give Android Things support in app, We need to define main entry point for the system to automatically launch on boot.

While adding an intent filter for an activity must contain an intent filter that includes both CATEGORY_DEFAULT and IOT_LAUNCHER.

<applicationandroid:label="@string/app_name"><activityandroid:name=".HomeActivity"><!-- Launch activity as default from Android Studio --><!-- For ease of development, this same activity should include a CATEGORY_LAUNCHER intent filter so Android Studio can launch it as the default activity when deploying or debugging. --><intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.LAUNCHER"/></intent-filter><!-- Add below intent filter which enable android things support for app --><!-- Launch activity automatically on boot --><intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.IOT_LAUNCHER"/><categoryandroid:name="android.intent.category.DEFAULT"/></intent-filter></activity>

Check Home activity support for Android Things in android app.