Fix blank WebView with androidx.activity:activity:1.12.0+

msal/src/main/AndroidManifest.xml

@@ -10,28 +10,33 @@
             android:name="com.microsoft.identity.common.internal.providers.oauth2.AuthorizationActivity"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout|keyboard"
             android:exported="false"
-            android:launchMode="singleTask" />
+            android:launchMode="singleTask"
+            android:theme="@style/MsalRedirectActivity" />
 
         <activity
             android:name="com.microsoft.identity.common.internal.providers.oauth2.CurrentTaskAuthorizationActivity"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout|keyboard"
             android:exported="false"
-            android:launchMode="standard" />
+            android:launchMode="standard"
+            android:theme="@style/MsalRedirectActivity" />
 
         <!-- Helper activity for displaying current broker redirect URI configuration -->
         <activity
             android:name="com.microsoft.identity.client.helper.BrokerHelperActivity"
             android:exported="false"
-            android:launchMode="standard" />
+            android:launchMode="standard"
+            android:theme="@style/MsalRedirectActivity" />
 
         <!-- MSAL will use system webview (custom tab) to render the sign-in page, BrowserTabActivity is to get response back from System Webview. Multiple apps on the device could integrate MSAL, OS will check which BrowserTabActivity can handle the intent based on the intent filter declared, so this activity has to be exported.-->
         <activity
             android:name="com.microsoft.identity.client.BrowserTabActivity"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|screenLayout"
-            android:exported="true" />
+            android:exported="true"
+            android:theme="@style/MsalRedirectActivity" />
 
         <activity
             android:name="com.microsoft.identity.client.CurrentTaskBrowserTabActivity"
-            android:exported="true" />
+            android:exported="true"
+            android:theme="@style/MsalRedirectActivity" />
     </application>
 </manifest>

msal/src/main/java/com/microsoft/identity/client/BrowserTabActivity.java

@@ -27,6 +27,8 @@
 import android.os.Bundle;
 import android.widget.Toast;
 
+import androidx.core.view.WindowCompat;
+
 import com.microsoft.identity.common.internal.providers.oauth2.BrowserAuthorizationFragment;
 import com.microsoft.identity.common.internal.util.StringUtil;
 import com.microsoft.identity.common.logging.Logger;
@@ -60,6 +62,11 @@ public final class BrowserTabActivity extends Activity {
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        // Opt out of edge-to-edge display for compatibility with androidx.activity:activity:1.12.0+
+        // This prevents blank WebView rendering when user's activity extends ComponentActivity
+        // with automatic edge-to-edge enforcement
+        WindowCompat.setDecorFitsSystemWindows(getWindow(), true);
 
         final String methodTag = TAG + ":onCreate";
 

msal/src/main/java/com/microsoft/identity/client/CurrentTaskBrowserTabActivity.java

@@ -35,6 +35,8 @@
 import android.os.Bundle;
 import android.widget.Toast;
 
+import androidx.core.view.WindowCompat;
+
 import com.microsoft.identity.common.internal.providers.oauth2.CurrentTaskBrowserAuthorizationFragment;
 import com.microsoft.identity.common.internal.util.StringUtil;
 import com.microsoft.identity.common.logging.Logger;
@@ -77,6 +79,11 @@ public final class CurrentTaskBrowserTabActivity extends Activity {
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        // Opt out of edge-to-edge display for compatibility with androidx.activity:activity:1.12.0+
+        // This prevents blank WebView rendering when user's activity extends ComponentActivity
+        // with automatic edge-to-edge enforcement
+        WindowCompat.setDecorFitsSystemWindows(getWindow(), true);
 
         final String methodTag = TAG + ":onCreate";
         final String response = getIntent().getDataString();

msal/src/main/java/com/microsoft/identity/client/helper/BrokerHelperActivity.java

@@ -8,6 +8,7 @@
 import android.widget.TextView;
 
 import androidx.annotation.Nullable;
+import androidx.core.view.WindowCompat;
 
 import com.microsoft.identity.common.adal.internal.AuthenticationConstants;
 import com.microsoft.identity.common.internal.broker.PackageHelper;
@@ -45,6 +46,12 @@ public static Intent createStartIntent(final Context context) {
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        // Opt out of edge-to-edge display for compatibility with androidx.activity:activity:1.12.0+
+        // This prevents blank WebView rendering when user's activity extends ComponentActivity
+        // with automatic edge-to-edge enforcement
+        WindowCompat.setDecorFitsSystemWindows(getWindow(), true);
+
         setContentView(R.layout.broker_helper);
 
         mPackageName = findViewById(R.id.txtPackageName);

msal/src/main/res/values/themes.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!--
+        Theme for MSAL redirect handling activities that should not use edge-to-edge display.
+        These activities are temporary redirect handlers and don't need edge-to-edge layouts.
+
+        The windowOptOutEdgeToEdgeEnforcement attribute opts out of edge-to-edge enforcement
+        on Android 15 (API 35). This is needed because:
+        - androidx.activity:activity:1.12.0+ enforces edge-to-edge automatically
+        - Android 15+ enforces edge-to-edge for apps targeting SDK 35+
+        - WebView content in redirect activities can render blank when edge-to-edge is active
+
+        Note: This opt-out is temporary and will be removed in Android 16. Activities also
+        programmatically set WindowCompat.setDecorFitsSystemWindows(window, true) for forward
+        compatibility.
+    -->
+    <style name="MsalRedirectActivity" parent="@android:style/Theme.Translucent.NoTitleBar">
+        <!-- Opt out of edge-to-edge enforcement for Android 15 (API 35) -->
+        <item name="android:windowOptOutEdgeToEdgeEnforcement">true</item>
+    </style>
+</resources>