Flutter white screen in release mode - android

I added flutter as a module to my existing app and the starting activity of the app is a subclass of io.flutter.embedding.android.FlutterFragmentActivity.
This is very weird but in debug mode everything works as expected but in release mode I see a white screen with the following log flooded
[DP] cancelDraw null isViewVisible: true
I tried monitoring flutter logs using flutter logs but they do not show anything, which it should because I have added print statements to my main method.
I tried adding the following to the release config
minifyEnabled false
shrinkResources false
But still nothing. I am using flutter 2.10.5.
Flutter activity entry in my manifest file:
<activity
android:name=".MainFlutterActivity"
android:exported="true"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

Related

You uploaded an APK or Android App Bundle which has an activity, activity alias, service or broadcast receiver with intent filter, but without the 'an

Issue: You uploaded an APK or Android App Bundle which has an activity, activity alias, service, or broadcast receiver with intent filter, but without the 'android: exported' property set. This file can't be installed on Android 12 or higher. See developer.android.com/about/versions/12/behavior-changes-12#exported
My AndroidManifest.xml file
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.c4life.guardianangel">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>
<application
tools:replace="android:label"
android:label="GA"
android:exported="true"
android:icon="#mipmap/ic_launcher">
<meta-data android:name="com.google.android.geo.API_KEY"
android:value="[insert API key here]"/>
<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">
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="#style/NormalTheme"
/>
<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>
</activity>
<service android:name="changjoopark.com.flutter_foreground_plugin.FlutterForegroundService" android:exported="false"/>
<meta-data
android:name="flutterEmbedding"
android:value="2" />
</application>
<uses-sdk
android:targetSdkVersion="30"
tools:overrideLibrary="changjoopark.com.flutter_foreground_plugin" />
According to google new policy If your app targets Android 12 or higher and contains activities, services, or broadcast receivers that use intent filters, you must explicitly declare the android:exported: true attribute for these app components.
FOR FLUTTER AND REACT NATIVE PROJECTS :
add this line to AndroidManifest.xml file of project :
android:exported="true"
Now just rebuild your project. In most of the cases this work like a charm.
If above solution is not working or if your project is in Android Native follow the below instructions :
In the main manifest file check all the activities, services, and receivers that can use intent-filter which are without the android: exported tag.
Add android:exported="true" or android:exported="false" for these tags.
You might ask when I need to add android:exported="true" or android:exported="false" to the activities, services, or broadcast receivers that use intent filters. If the app component includes the LAUNCHER category, set android: exported to true otherwise set android: exported to false.
If adding the android: exported in the main manifest file not works for you follow the below steps:
open AndroidManifest.xml file and at the bottom select Merged Manifest.
like this :
if you are not able to preview Merged Manifest then in your build.gradle file
set compileSdkVersion 30 and targetSdkVersion 30 and sync your project and now try to open the merged manifest again I hope this time you will have a proper preview of the merged manifest. but if there is no preview don't worry you can still navigate to individual manifest files from different third-party libraries you have used in your project.
Note: also check individual third-party library manifest files if there is any activity, service, or receiver using then you have to override the same activity, service, or receiver in your main manifest file with android: exported property.
For Example in my case I have defined android: exported for each and every activity, service, or receiver in my main manifest file but in my project, I was using Razorpay dependency so in the manifest of Razorpay I found that there is an activity and receiver which are using property without android: exported so I declared them in my main manifest files.
as shown below :
<activity
android:name="com.razorpay.CheckoutActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
android:theme="#style/CheckoutTheme"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<data
android:host="rzp.io"
android:scheme="io.rzp" />
</intent-filter>
</activity>
<receiver android:name="com.razorpay.RzpTokenReceiver"
android:exported="true"
android:permission="android.permission.INTERNET">
<intent-filter>
<action android:name="rzp.device_token.share" />
</intent-filter>
</receiver>
Note: in your case, you may have to go through more files and check activity, and services, and mention them in your main manifest file.
also after doing all this you can change back to targetSdkVersion 31 and compileSdkVersion 31 in your build.gradle file.
In my case, I just add this line to my manifest:
android:exported="true"
I finally fixed this issue
1: install emulator with android v 12
2: run your app
the compailer will tell you what service/reciver...etc casued the issue
now you have to add it to your manifist and add the android:exported="true" to it
in my case the prblem was with the local notifcation package
i got the message to fix this receiver
com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver
so i added to my manifist out side the main activity
<receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
</intent-filter>
</receiver>
and it worked as intended
By just adding exported:true to your Android manifest activity did not solve my issue. Probably because the libraries your application depends on does not have exported:true You shouldn't encounter this bug in the future as long as the libraries are updated with exported:true
You have to
open project in Android studio
Open Androidmanifest.xml
At the bottom select merged manifest
Now ensure that you add exported to true wherever stated and fix those warnings specified on the line (in blue) and tapping blue text does not take you to one of these tags Services, activity, receiver in above step then look for the library for which the merge error exist
e.g a merge error here shows issue in flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService
So go to the manifest of that specific library which is listed in blue above the error, where you can add exported to true.(this will also resolve the merge error)
Add exported to true in services tag
Video demo here: https://www.youtube.com/watch?v=hy0J8MNnE6g
if use targetSdkVersion=31
package="com.name.app"><!-- Channnge your package -->
<queries>
<intent>
<action android:name="android.intent.action.VIEW" />
<data android:scheme="https" />
</intent>
<intent>
<action android:name="android.intent.action.DIAL" />
<data android:scheme="tel" />
</intent>
<intent>
<action android:name="android.intent.action.SEND" />
<data android:mimeType="*/*" />
</intent>
</queries>
<application
android:label="Tut Elimi"
android:icon="#mipmap/ic_launcher">
<service android:name="com.example.app.backgroundService"
android:exported="true">
<intent-filter>
<action android:name="com.example.app.START_BACKGROUND" />
</intent-filter>
</service>
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value=""/>
<activity
android:name=".MainActivity"
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"
android:exported="true">
<!-- 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"
/>
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="#drawable/splash"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter>
<action android:name="FLUTTER_NOTIFICATION_CLICK" />
<category android:name="android.intent.category.DEFAULT" />
</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. -->
</activity>
<!-- Don't delete the meta-data below.
This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
<receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
</intent-filter>
</receiver>
<service
android:name="com.name.app.BackgroundService"
android:enabled="true"
android:exported="true" />
<meta-data
android:name="flutterEmbedding"
android:value="2" />
</application>
</manifest> ````
The "exported" attribute describes whether or not someone else can be
allowed to use it.
So if you have "exported=false" on an Activity, no other app, or even
the Android system itself, can launch it. Only you can do that, from
inside your own application.
So settings "exported=false" on the Activity marked as the LAUNCHER
Activity would basically tell the system that it cant launch your
application, ever.
If you are not using any other project then update all library latest versions because some old library AndroidManifest.xml not added android: exported in activities, services, or broadcast receivers
If your Android Studio don't show the Merged Manifest tab, you can figure out what is the problem by searching on the merged AndroidManifest.xml file.
To me it was on: \build\app\intermediates\merged_manifests\release\AndroidManifest.xml
And my problem was the ScheduledNotificationBootReceiver:
Add this to your Manifest:
<receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver"
android:exported="true">
</receiver>
If you are flutter developer and unable to find Merged Manifest tab, follow th e steps:
Open Project in Android Studio.
Navigate to main AndroidManifest.xml.
Navigation
Wait for Project Loading
Wait for Project
Here it is... Found
The problem on my RN app is that at debug/AndroidManifest.xml the exported for facebook.react.devsupport was set to false. changed that to true solved it.
Pressing merged Manifest showed me where the issue is.
Hope that helps.
Xamarin Forms: I was able to publish it, I had to update the AndroidManifest with the path obj\Release\120\android\manifest since some "receiver" were not there and had not added the "android:exported".
This is for Unity Developers in specific and for any frame work targeting android platform in general. If by any means, you are not able to publish even if you have added android:exported property to every activity/receiver containing intent filter, then you should do this approach and hopefully you will be able to solve the issue.
Problem
Recently, Playstore started to require apps / games to target API 31. You updated SDK, Gradle and all that stuff. You got a build, published to PlayStore and now Playstore is telling you, this
you uploaded an APK or Android App Bundle which has an activity, activity alias, service or broadcast receiver with intent filter, but without 'android:exported' property set.
YOU HAVE ALREADY TRIED
You now know that the Android Manifests including in you app / game contains some Activities, receivers, activity-alias etc which contain intent-filter but does not have android:exported property set to true or false.
You tried adding this property to all of the Manifests and unity 's own manifest by Enablisng Custom Android Manifest too. But still Playstore is not accepting the app.
You don't want to update Unity version to fix this. You still have a solution.
Let's Narrows down
You are doing good in adding android:exported property but when you are getting build, not all of those tags persist. During build, unity is replacing you properties, especially properties related to external plugins you have used in your app.
So lets have a look which plugins contain problematic activities/receivers etc.
Instead of building a bundle or apk, Export your unity project as Android Project.
Open project in android studio, and build there.
After build is complete, go to this file which is the Merged Menifest containing data from all individual manifests.
YourExportedProjectFolder\launcher\build\intermediates\merged_manifests\release
Go precisely through this file and check which activities/receivers etc does not contain exported:property set. Not down that plugin. That is the culprit.
Let's fix it
Go back to unity, go to the relevant plugin manifest, copy those specific problematic activities (Complete i.e. along with intent-filters) from that manifest and paste to
Assets/Plugin/Android/AndroidManifest
Something like this
<receiver android:name="universal.tools.notifications.ScheduledNotificationsRestorer"
android:exported="true"
tools:replace="android:exported">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
Now build again and you should be good to go!
for react native that have many library i fix it with this step :
first is you build or run, then you look at app/build/intermedied/merged_manifest/release/AndroidManifest.xml
then look at all that have then copy from open tag above it and the closing tag either it activities, services, or broadcast, receivers. then paste to folder android/app/src/main/AndroidManifest.xml and dont forget to put android:exported="true" to fix it. if you already cover all intent-filter then save then build again.
For Unity i did this, i went to gameProjectFolder\Temp\StagingArea y copy unityManifest to gameProjectFolder\Assets\Plugins\Android and changed the name to
AndroidManifest and in the label activity I add android:exported="true"
Adding the line android:exported="true" to my Manifes
Need to add android:exported="true" to all components which has an intent-filter.
See where you need to add it you can opening Merged Manifest file.
Just change
build.gradle -> defaultConfig
targetSdkVersion="31"
to
targetSdkVersion="30"
work normal for me.

Android release build failing but debug version builds OK

I'm working on a small Android Wear OS app and am pretty close to a release version.
The app is built in Android Studio using the Wear OS application template and it currently has just the one Activity (MainActivity).
Up to now I have been building a debug variant without any problems. I didn't need to tweak anything to make that work.
But now I am trying to build a release variant I am getting the following error:
Error: MainActivity must extend android.app.Service [Instantiatable]
My AndroidManifest.xml is as follows and it's the <service android:name="MainActivity" that is flagging as the error in the editor with MainActivity underlined in red:
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#android:style/Theme.DeviceDefault">
<uses-library
android:name="com.google.android.wearable"
android:required="true" />
<meta-data
android:name="com.google.android.wearable.standalone"
android:value="true" />
<!-- Recommended for Android 9 (API level 28) and lower. -->
<!-- Required for Android 10 (API level 29) and higher. -->
<service
android:name="MainActivity"
android:foregroundServiceType="location" >
<!-- Any inner elements would go here. -->
</service>
<activity
android:name=".MainActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
My MainActivity currently extends Activity
public class MainActivity extends Activity {
I have no idea how to resolve this... it doesn't make sense to me that the debug variant builds and runs fine but the release variant doesnt.
The only release build specific stuff in my build.gradle is:
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
When I switch back to the debug variant the app build and runs perfectly on both an AVD Wear OS device and on an actual device.

App not showing as installed on debug React Native 0.56

I have a weird situation occurring right now.
Two cases
Emulator running - react-native run-android gets installed as an application on the emulator in debug mode and is visible in the application list screen.
Real device running - react-native run-android gets installed on the device, but I can't see the installed application on the application list screen. So, to open the app again, I need to run the command react-native run-android again. When I disconnect the device, an alert pops up, giving a message similar to Application XYZ process stopped (I don't remember the exact message)
Is there any additional settings that need to be done in order to see it as installed?
Use case - I have a deep link arriving on an sms. Need to open an app for the same, but it opens the same in the web browser (I have my deep link scheme in the manifest file).
My current conclusion - Since, the app is not visible as installed, maybe that's why the intent is not getting recognized as a deep link.
<application
android:name=".MainApplication"
android:label="#string/app_name"
android:icon="#mipmap/ic_launcher"
android:allowBackup="false"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<data
android:host="xyz.com"
android:pathPrefix="/"
android:scheme="https" />
</intent-filter>
</activity>
<activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
</application>
Any thoughts?
Note - Using RN 0.56.

Multiple app icons being installed when using Flavors and multiple manifest files

I currently have a project that needs to contain two different forms of codebase, legacy and an updated version of the application. I am using Flavors for this, but am running into an issue where two app icons are being installed. The reason is because both the legacy codebase and the updated codebase have their own manifest.xml, and inside the manifest are declarations for identifying the Main launch class and their relative app icon.
<!-- legacy code manifest -->
<activity
android:name="legacy.activity.RegistrationActivity"
android:configChanges="orientation|screenSize"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:theme="#style/CustomAppTheme"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<!-- updated code manifest -->
<activity
android:name="updated.activity.RegistrationActivity"
android:configChanges="orientation|screenSize"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:theme="#style/CustomAppTheme"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
How can I get around this? If I remove the intent-filter from the updated code base, which is the Main codebase, the Flavor will not install two icons. However, I am unable to run the Main codebase because I have not declared an entry point in my Manifest. And conversely, if I remove the intent-filter from the Flavor and keep it in my Main codebase, the Flavor code will not run. The two RegistrationActivity classes are different, just with the same name. The Legacy code does not really share much of the updated codebase. Any suggestions other than separate into different projects?
Some have requested my setup with Flavors in gradle, here is snapshot of it.
productFlavors {
standard {
applicationId 'updated.android.example'
manifestPlaceholders = [package_name: "updated.android.example", primary_lang: "en"]
signingConfig signingConfigs.keystore
}
legacyTest {
applicationId 'legacy.android.example.debug'
manifestPlaceholders = [package_name: "legacy.android.example.debug",
target : "Test", primary_lang: "en"]
signingConfig signingConfigs.keystore
}
legacyProd {
applicationId 'legacy.android.example.prod'
manifestPlaceholders = [package_name: "legacy.android.example.prod",
target : "Prod", primary_lang: "en"]
signingConfig signingConfigs.keystore
}
This line:
<category android:name="android.intent.category.LAUNCHER"/>
says that you have a launching activity. Set them to a default activity setting(this is just "another activity", create a third class that is the launcher-class. This class will automatically redirect to one of the two other activities based on whatever specifications you may have, such as API level or brand. Any specifications you have as to which to launch, set them and the user will not know there is a handling activity.
When you have two launcher activities, they show as two applications. This is probably because the system cannot determine what to redirect to automatically. So there are two depending on what to launch.
How can I get around this? If I remove the intent-filter from the updated code base, which is the Main codebase,
Don't remove it. Change it. E.g.:
<intent-filter>
<action android:name="com.yourpackage.name.CLASSNAME" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
You need separate <activity android:name="legacy.activity.RegistrationActivity" and <activity android:name="updated.activity.RegistrationActivity" you two manifests, one for each flavor.
eg.:
src/main/AndroidManifest.xml (with everything except: *.activity.RegistrationActivity)
src/legacy/AndroidManifest.xml (with legacy.activity.RegistrationActivity)
src/updated/AndroidManifest.xml (with updated.activity.RegistrationActivity)

Android: start manually service failed on release version

I develop an Android app for my pcDuino board. There is Android 4.2 version on it.
In AndroidManifest.xml, I have my service:
<service
android:name="com.compagny.myapp.service.HTTPService"
android:enabled="true" >
<!-- To allow start the Android service (for debugging session) -->
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</service>
I want to debug it, so I added this filter.
From my laptop, I can deploy in debug and release version my application, but when I want to start my app in release mode, it doesn't work. I can see the service into application manager from my pcDuino board, but nothing happens (even traces in Logcat!).
I start my service from a command line:
am startservice -n com.compagny.myapp/com.compagny.myapp.service.HTTPService

Categories

Resources