Targeting S+ (version 31 and above) requires that an explicit value for android:exported be defined when intent filters are present]

Solution 1:

In AndroidManifest.xml add android:exported="true":

<manifest ...>
  <application ...>
    <activity
        android:exported="true"

Solution 2:

Android 12 require you to add a piece of code to your main activity

1. Go to your project folder and open AndroidManifest.xml file

2. Add the below code in activity

   android:exported="true"

3. Example

   <activity
        android:name=".MainActivity"
        android:exported="true"
        android:launchMode="singleTop"
        android:theme="@style/LaunchTheme"
    </activity>
   

Solution 3:

Thanks @rahul-kavati.

For Xamarin/MAUI it is a property on ActivityAttribute, used like this [Activity(Label = "MsalActivity", Exported = true)]