fix(android): respect system bar insets

android/app/src/androidTest/java/org/whoneedhelp/mobile/SystemBarInsetsInstrumentedTest.java

@@ -0,0 +1,42 @@
+package org.whoneedhelp.mobile;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import android.os.Build;
+import android.view.View;
+
+import androidx.test.ext.junit.rules.ActivityScenarioRule;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public final class SystemBarInsetsInstrumentedTest {
+    @Rule
+    public final ActivityScenarioRule<MainActivity> activityRule =
+        new ActivityScenarioRule<>(MainActivity.class);
+
+    @Test
+    public void edgeToEdgeContentUsesSystemBarInsets() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            return;
+        }
+
+        activityRule.getScenario().onActivity(activity -> {
+            View contentView = activity.findViewById(R.id.main_content);
+
+            assertNotNull(contentView);
+            assertTrue(
+                "The app content must start below the status bar",
+                contentView.getPaddingTop() > 0
+            );
+            assertTrue(
+                "The app content must end above the navigation bar",
+                contentView.getPaddingBottom() > 0
+            );
+        });
+    }
+}

android/app/src/main/java/org/whoneedhelp/mobile/MainActivity.java

@@ -13,6 +13,7 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.CancellationSignal;
 import android.util.Log;
+import android.view.View;
 import android.view.ViewGroup;
 import android.webkit.CookieManager;
 import android.webkit.GeolocationPermissions;
@@ -24,6 +25,7 @@ import android.webkit.WebResourceResponse;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
+import android.widget.FrameLayout;
 import android.widget.Toast;
 
 import androidx.activity.ComponentActivity;
@@ -39,6 +41,9 @@ import androidx.credentials.GetCredentialResponse;
 import androidx.credentials.exceptions.ClearCredentialException;
 import androidx.credentials.exceptions.GetCredentialException;
 import androidx.credentials.exceptions.NoCredentialException;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
 import androidx.webkit.WebMessageCompat;
 import androidx.webkit.WebViewCompat;
 import androidx.webkit.WebViewFeature;
@@ -132,7 +137,17 @@ public final class MainActivity extends ComponentActivity {
                 ViewGroup.LayoutParams.MATCH_PARENT
             )
         );
-        setContentView(webView);
+        FrameLayout contentView = new FrameLayout(this);
+        contentView.setId(R.id.main_content);
+        contentView.setLayoutParams(
+            new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT
+            )
+        );
+        contentView.addView(webView);
+        setContentView(contentView);
+        applySystemBarInsets(contentView);
 
         WebView.setWebContentsDebuggingEnabled(BuildConfig.DEBUG);
 
@@ -176,6 +191,40 @@ public final class MainActivity extends ComponentActivity {
         }
     }
 
+    private void applySystemBarInsets(View contentView) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            return;
+        }
+
+        ViewCompat.setOnApplyWindowInsetsListener(contentView, (view, windowInsets) -> {
+            Insets safeInsets = windowInsets.getInsets(
+                WindowInsetsCompat.Type.systemBars()
+                    | WindowInsetsCompat.Type.displayCutout()
+            );
+            view.setPadding(
+                safeInsets.left,
+                safeInsets.top,
+                safeInsets.right,
+                safeInsets.bottom
+            );
+            if (PAGE_LOAD_DIAGNOSTICS) {
+                Log.d(
+                    LOG_TAG,
+                    "Applied system bar insets: left="
+                        + safeInsets.left
+                        + ", top="
+                        + safeInsets.top
+                        + ", right="
+                        + safeInsets.right
+                        + ", bottom="
+                        + safeInsets.bottom
+                );
+            }
+            return windowInsets;
+        });
+        ViewCompat.requestApplyInsets(contentView);
+    }
+
     private String initialUrl() {
         return LaunchUrlResolver.initialUrl(
             trustedOrigin,

android/app/src/main/res/values/ids.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <item name="main_content" type="id" />
+</resources>

android/app/src/main/res/values/styles.xml

@@ -6,6 +6,6 @@
         <item name="android:navigationBarColor">@color/brand_green_dark</item>
         <item name="android:statusBarColor">@color/brand_green</item>
         <item name="android:windowActionModeOverlay">true</item>
-        <item name="android:windowLightStatusBar">false</item>
+        <item name="android:windowLightStatusBar">true</item>
     </style>
 </resources>