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I'm trying to publish my new version app on Google Play but the process failed because I have to upgrade Target API Version to version 30. I update API version but now my app doesn't startup:
Android application is running (debug is disabled in android project properties).
Start debugging Android application ...
am start -a "android.intent.action.MAIN" -c "android.intent.category.LAUNCHER" -n "com.kamax.specialitaegagesci/crc649f72c58789122579.SplashActivity"
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.kamax.specialitaegagesci/crc649f72c58789122579.SplashActivity }
I add to SplashActivity decorators Exported = true but it doesn't work. What I have to do to migrate from Android 11 to Android 12 ? Which are the steps to follow ?
Thanks
Alessio
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(316.8, 40%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EYL%3C/text%3E%3C/svg%3E)
For further investigation, could you please provide more detailed information about the error message, and how to reproduce this issue?
I try to deploy on my device the app but I have the previous message...Deploy ok, startup fails (everytime I try to startup my app)
Would this documentation be helpful for you?
If this documentation does not help you, could you please run this program in debug mode to get detailed error information?
No, debug info
Start debugging Android application ...
am start -a "android.intent.action.MAIN" -c "android.intent.category.LAUNCHER" -n "com.kamax.specialitaegagesci/crc649f72c58789122579.SplashActivity"
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.kamax.specialitaegagesci/crc649f72c58789122579.SplashActivity }
Android application is running (debug is disabled in android project properties).
Start debugging Android application
This situation is really frustrating, I just wanted to publish an update of my app and, for do this, I was forced by Google Play to update the sdk version to 31. Now nothing works anymore and there is no plausible explanation or documentation for Xamarin.Forms. All my code is unusable :(
Due to the information, you have given so far, I could give the following suggestions.
bin/ and obj/ folder, then restart your VS and rebuild the project.
<application android:label="@ hide /app_name" android:theme="@STYLE /MainTheme" android:icon="@mipmap/ic_launcher_round" android:name="android.app.Application" android:allowBackup="true" android:extractNativeLibs="true">
...
<provider android:authorities="com.kamax.specialitaegagesci.fileProvider" android:exported="false" android:grantUriPermissions="true" android:name="xamarin.essentials.fileProvider">
<meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@XML /xamarin_essentials_fileprovider_file_paths" />
</provider>
<receiver android:enabled="true" android:exported="false" android:name="crc643f46942d9dd1fff9.PowerSaveModeBroadcastReceiver" />
<provider android:name="mono.MonoRuntimeProvider" android:exported="false" android:initOrder="1999999999" android:authorities="com.kamax.specialitaegagesci.mono.MonoRuntimeProvider.mono_init" />
</application>
How can I change this value from false to true ? I have some old nuget packages linked to my app but if I try to update them the process fails.
Thanks
Alessio
Do you mean you want to modify properties in NuGet Pakcages?
If so, this is not feasible.
You could look at the resulting AndroidManifest in the obj/Debug/Android folder and see what is actually being exported.
I have some old nuget packages linked to my app but if I try to update them the process fails.
Could you please provide specific error information?
Finally I solved the problem after updating Xamarin.GooglePlayServices.Ads package to 121.3.0 version
Thanks for your feedback, could you please convert this comment to answer?
It would be helpful for others who meet the same issue.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(204.8, 70%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGM%3C/text%3E%3C/svg%3E)
See the following link for how to add a splash screen for Android 12 and 13. https://github.com/gmck/XamarinBasicSplashScreen
Finally I solved the problem after updating Xamarin.GooglePlayServices.Ads package to 121.3.0 version
Your fix doesn't make much sense considering your initial message suggested that you had a problem with the SplashActivity, which is not allowed as a separate Activity in an Android 12 application. Have you checked that the app now displays the splash screen correctly on all devices e.g Android 12 and lower?
It works perfectly. I put Exported = true decoration in my two activity (SplashScreenActivity, MainActivity) and update Xamarin.GooglePlayServices.Ads package to 121.3.0 version. That's it.
@Alessio Camaroto
It works perfectly
If you say!!
I don't understand why you wouldn't read the documentation you were provided with a link to. You don't have to read far to realize you are doing it wrong.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(252.8, 59%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EOA%3C/text%3E%3C/svg%3E)
try this
[https://github.com/xamarin/xamarin-android/wiki/JDK-11-Warning#install-platform