Develop Reference

Keep screen on (prevent screen lock) in Android TWA app

I am a web developer and have a web app (PWA) bundled into an Android app with Bubblewrap and I would like to prevent screen lock while the app is open.
I believe there is no solution involving JavaScript in the web app itself so I'd need an Android solution.
How can I make this happen?
I have found various answers on here that say I should either add <android:KeepScreenOn="true"/> to the Android manifest or add getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); somewhere in the code and I have tried to add these snippets in various places in the code, but without success.
Where should I add the code for it to work?
Any help would be appreciated. Thanks!
The AndroidManifest.xml of the project created by Bubblewrap is:
<!-- The "package" attribute is rewritten by the Gradle build with the value of applicationId.
It is still required here, as it is used to derive paths, for instance when referring
to an Activity by ".MyActivity" instead of the full name. If more Activities are added to the
application, the package attribute will need to reflect the correct path in order to use
the abbreviated format. -->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="">
<application
android:name="Application"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/appName"
android:manageSpaceActivity="com.google.androidbrowserhelper.trusted.ManageDataLauncherActivity"
android:supportsRtl="true"
android:theme="#android:style/Theme.Translucent.NoTitleBar">
<meta-data
android:name="asset_statements"
android:resource="#string/assetStatements" />
<meta-data
android:name="web_manifest_url"
android:value="#string/webManifestUrl" />
<meta-data
android:name="twa_generator"
android:value="#string/generatorApp" />
<activity android:name="com.google.androidbrowserhelper.trusted.ManageDataLauncherActivity">
<meta-data
android:name="android.support.customtabs.trusted.MANAGE_SPACE_URL"
android:value="#string/launchUrl" />
</activity>
<activity android:name="LauncherActivity"
android:alwaysRetainTaskState="true"
android:label="#string/launcherName"
android:exported="true"
android:keepScreenOn="true">
<meta-data android:name="android.support.customtabs.trusted.DEFAULT_URL"
android:value="#string/launchUrl" />
<meta-data
android:name="android.support.customtabs.trusted.STATUS_BAR_COLOR"
android:resource="#color/colorPrimary" />
<meta-data
android:name="android.support.customtabs.trusted.NAVIGATION_BAR_COLOR"
android:resource="#color/navigationColor" />
<meta-data
android:name="android.support.customtabs.trusted.NAVIGATION_BAR_COLOR_DARK"
android:resource="#color/navigationColorDark" />
<meta-data
android:name="androix.browser.trusted.NAVIGATION_BAR_DIVIDER_COLOR"
android:resource="#color/navigationDividerColor" />
<meta-data
android:name="androix.browser.trusted.NAVIGATION_BAR_DIVIDER_COLOR_DARK"
android:resource="#color/navigationDividerColorDark" />
<meta-data android:name="android.support.customtabs.trusted.SPLASH_IMAGE_DRAWABLE"
android:resource="#drawable/splash"/>
<meta-data android:name="android.support.customtabs.trusted.SPLASH_SCREEN_BACKGROUND_COLOR"
android:resource="#color/backgroundColor"/>
<meta-data android:name="android.support.customtabs.trusted.SPLASH_SCREEN_FADE_OUT_DURATION"
android:value="#integer/splashScreenFadeOutDuration"/>
<meta-data android:name="android.support.customtabs.trusted.FILE_PROVIDER_AUTHORITY"
android:value="#string/providerAuthority"/>
<meta-data android:name="android.app.shortcuts" android:resource="#xml/shortcuts" />
<meta-data android:name="android.support.customtabs.trusted.FALLBACK_STRATEGY"
android:value="#string/fallbackType" />
<meta-data android:name="android.support.customtabs.trusted.DISPLAY_MODE"
android:value="immersive" />
<meta-data android:name="android.support.customtabs.trusted.SCREEN_ORIENTATION"
android:value="#string/orientation"/>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE"/>
<data android:scheme="https"
android:host="#string/hostName"/>
</intent-filter>
</activity>
<activity android:name="com.google.androidbrowserhelper.trusted.FocusActivity" />
<activity android:name="com.google.androidbrowserhelper.trusted.WebViewFallbackActivity"
android:configChanges="orientation|screenSize" />
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="#string/providerAuthority"
android:grantUriPermissions="true"
android:exported="false">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/filepaths" />
</provider>
<service
android:name=".DelegationService"
android:enabled="#bool/enableNotification"
android:exported="#bool/enableNotification">
<meta-data
android:name="android.support.customtabs.trusted.SMALL_ICON"
android:resource="#drawable/ic_notification_icon" />
<intent-filter>
<action android:name="android.support.customtabs.trusted.TRUSTED_WEB_ACTIVITY_SERVICE"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</service>
<activity
android:name="com.google.androidbrowserhelper.playbilling.provider.PaymentActivity"
android:theme="#android:style/Theme.Translucent.NoTitleBar"
android:configChanges="keyboardHidden|keyboard|orientation|screenLayout|screenSize"
android:exported="true">
<intent-filter>
<action android:name="org.chromium.intent.action.PAY" />
</intent-filter>
<meta-data
android:name="org.chromium.default_payment_method_name"
android:value="https://play.google.com/billing" />
</activity>
<!-- This service checks who calls it at runtime. -->
<service
android:name="com.google.androidbrowserhelper.playbilling.provider.PaymentService"
android:exported="true" >
<intent-filter>
<action android:name="org.chromium.intent.action.IS_READY_TO_PAY" />
</intent-filter>
</service>
</application>
</manifest>

Android App (capacitor) opens "App Info" screen instead of opening the app

Whenever I bundle my app and upload it for internal testing it goes to an "App Info" screen instead of the main app. On some devices the app is completely hidden and doesn't even come up in a search.
Here's my AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="REDACTED">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme"
>
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="#string/admob_app_id"
/>
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="#string/facebook_app_id"/>
<meta-data android:name="com.facebook.sdk.ClientToken" android:value="#string/facebook_client_token"/>
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="#string/facebook_app_id"/>
<activity
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode"
android:name="REDACTED.MainActivity"
android:label="#string/title_activity_main"
android:theme="#style/AppTheme.NoActionBarLaunch"
android:launchMode="singleTask"
android:screenOrientation="landscape"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="#string/custom_url_scheme" android:host="oauth" />
</intent-filter>
</activity>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths"></meta-data>
</provider>
</application>
<!-- Permissions -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
</manifest>

The solution was converting this:
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="#string/custom_url_scheme" android:host="oauth" />
</intent-filter>
to this:
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
<intent-filter>
<data android:scheme="#string/custom_url_scheme" android:host="oauth" />
</intent-filter>

There was a problem while parsing the package” on Android 12

While Installing on Android 12 I'm getting this error
adb: failed to install C:\Users\***\Desktop\***\build\app\outputs\flutter-apk\app.apk: Failure
[INSTALL_PARSE_FAILED_MANIFEST_MALFORMED: Failed parse during installPackageLI: /data/app/vmdl159430148.tmp/base.apk (at
Binary XML file line #263): com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver: Targeting S+
(version 31 and above) requires that an explicit value for android:exported be defined when intent filters are present]
AndroidManifest file
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ordeno">
<application
android:label="abcd"
android:name="${applicationName}"
android:icon="#mipmap/ic_launcher">
<meta-data android:name="com.facebook.sdk.ApplicationId"
android:value="#string/facebook_app_id"/>
<meta-data android:name="com.facebook.sdk.ApplicationId"
android:value="#string/facebook_app_id"/>
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="**********" />
<activity android:name="com.facebook.FacebookActivity"
android:exported="true"
android:configChanges=
"keyboard|keyboardHidden|screenLayout|screenSize|orientation"
android:label="#string/app_name" />
<activity
android:name="com.facebook.CustomTabActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="#string/fb_login_protocol_scheme" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:exported="true"
android:launchMode="singleTop"
android:theme="#style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<!-- Specifies an Android theme to apply to this Activity as soon as
the Android process has started. This theme is visible to the user
while the Flutter UI initializes. After that, this theme continues
to determine the Window background behind the Flutter UI. -->
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="#style/NormalTheme"
/> <!-- stripe flutter -->
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:scheme="sdk"
android:host="3ds.sdk.io" />
</intent-filter>
<!-- Displays an Android View that continues showing the launch screen
Drawable until Flutter paints its first frame, then this splash
screen fades out. A splash screen is useful to avoid any visual
gap between the end of Android's launch screen and the painting of
Flutter's first frame. -->
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="#drawable/launch_background"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<!-- Deep linking -->
<meta-data android:name="flutter_deeplinking_enabled" android:value="true" />
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="http" android:host="dummy.page" />
<data android:scheme="https" />
</intent-filter>
</activity>
<!-- Don't delete the meta-data below.
This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
<meta-data
android:name="flutterEmbedding"
android:value="2" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="#drawable/notification_icon"
/>
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="#string/default_notification_channel_id"
/>
<meta-data
android:name="com.google.firebase.messaging.default_notification_color"
android:resource="#color/default_color"
/>
</application>
</manifest>
I have added andriod:exported="true" to all the activity tag's, it still shows the same

Issue is because of flutter_local_notifications library.
Adding below lines inside <application></application> in AndroidManifest.xml will fix the problem.
<receiver android:name="com.dexterous.flutterlocalnotifications.ActionBroadcastReceiver" />
<receiver android:exported="true" android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" />
<receiver android:exported="true" android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
<action android:name="com.htc.intent.action.QUICKBOOT_POWERON"/>
</intent-filter>
</receiver>

Ok Google "Note to self" with my app

I have been trying to read the Android Developers http://developer.android.com/training/wearables/apps/voice.html#AppProvided but not got anywhere... How can I choose my app to pass the speech input from Google Now to my app?!
My Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.saltais.todo"
android:versionCode="1"
android:versionName="1.0">
<!-- Dropbox -->
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
android:name="com.saltais.todo.NotesApplication"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
android:allowBackup="true">
<activity
android:name="com.saltais.todo.gui.main.MainActivity"
android:label="#string/app_name"
android:launchMode="singleTop">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="com.google.android.voicesearch.SELF_NOTE" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="#xml/searchable" />
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity
android:name="com.saltais.todo.gui.settings.SettingsActivity"
android:label="#string/action_settings"
android:parentActivityName="com.saltais.todo.gui.main.MainActivity"
tools:ignore="UnusedAttribute">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.saltais.todo.gui.main.MainActivity" />
</activity>
<!-- Dropbox -->
<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-XXXXXXXXXXX" /><!--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" />
</application>
</manifest>

Custom URI Scheme

I'd like to be able to open my Android app from a URL. So in the AndroidManifest.xml I put this code:
<application
android:allowBackup="true"
android:theme="#android:style/Theme.NoTitleBar"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
>
<meta-data android:name="com.google.android.gms.version" android:value="#integer/google_play_services_version" />
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="#string/apikey" />
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="#string/app_id" />
<activity
android:name="com.myApp.LoginActivity"
android:label="#string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<action android:name="android.intent.action.VIEW" />
<data android:scheme="uritest" android:host="com.myApp" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
But when I go into my browser on the phone and type in "uritest://com.myApp" in the URL bar, it Google searches it instead of opening the app like I would expect it to. Is there something that I'm doing incorrectly? Any help in this matter would be greatly appreciated, thanks!