[url_launcher] Android API 34 support (#4660)

fixed [#flutter/flutter/issues/126460 ](https://github.com/flutter/flutter/issues/126460)
Reland of https://github.com/flutter/packages/pull/3973 which incorrectly used application context when registering and not when unregistering. This pr uses activity context for both which is aligned with what the behavior was before. 

- Register on the same context as  unregister
- Add integration test for android url launch and close

Tested with manual test and new integration test.

packages/url_launcher/url_launcher_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 6.0.38
+
+* Updates android implementation to support api 34 broadcast receiver requirements.
+
 ## 6.0.37
 
 * Sets android.defaults.buildfeatures.buildconfig to true for compatibility with AGP 8.0+.

packages/url_launcher/url_launcher_android/android/build.gradle

@@ -62,6 +62,9 @@ android {
 }
 
 dependencies {
+
+    // Java language implementation
+    implementation "androidx.core:core:1.10.1"
     implementation 'androidx.annotation:annotation:1.6.0'
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'org.mockito:mockito-core:5.1.1'

packages/url_launcher/url_launcher_android/android/src/main/java/io/flutter/plugins/urllauncher/WebViewActivity.java

@@ -23,6 +23,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.annotation.VisibleForTesting;
+import androidx.core.content.ContextCompat;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
@@ -143,7 +144,8 @@ public class WebViewActivity extends Activity {
     webview.setWebChromeClient(new FlutterWebChromeClient());
 
     // Register receiver that may finish this Activity.
-    registerReceiver(broadcastReceiver, closeIntentFilter);
+    ContextCompat.registerReceiver(
+        this, broadcastReceiver, closeIntentFilter, ContextCompat.RECEIVER_EXPORTED);
   }
 
   @VisibleForTesting

packages/url_launcher/url_launcher_android/example/integration_test/url_launcher_test.dart

@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'dart:async';
+import 'dart:io';
+
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
 import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
@@ -20,4 +23,41 @@ void main() {
     // sms:, tel:, and mailto: links may not be openable on every device, so
     // aren't tested here.
   });
+
+  testWidgets('launch and close', (WidgetTester _) async {
+    final UrlLauncherPlatform launcher = UrlLauncherPlatform.instance;
+
+    // Setup fake http server.
+    final HttpServer server = await HttpServer.bind(InternetAddress.anyIPv4, 0);
+    unawaited(server.forEach((HttpRequest request) {
+      if (request.uri.path == '/hello.txt') {
+        request.response.writeln('Hello, world.');
+      } else {
+        fail('unexpected request: ${request.method} ${request.uri}');
+      }
+      request.response.close();
+    }));
+    // Https to avoid cleartext warning on android.
+    final String prefixUrl = 'https://${server.address.address}:${server.port}';
+    final String primaryUrl = '$prefixUrl/hello.txt';
+
+    // Launch a url then close.
+    expect(
+        await launcher.launch(primaryUrl,
+            useSafariVC: true,
+            useWebView: true,
+            enableJavaScript: false,
+            enableDomStorage: false,
+            universalLinksOnly: false,
+            headers: <String, String>{}),
+        true);
+    await launcher.closeWebView();
+    // Delay required to catch android side crashes in onDestroy.
+    //
+    // If this test flakes with an android crash during this delay the test
+    // should be considered failing because this integration test can have a
+    // false positive pass if the test closes before an onDestroy crash.
+    // See https://github.com/flutter/flutter/issues/126460 for more info.
+    await Future<void>.delayed(const Duration(seconds: 5));
+  });
 }

packages/url_launcher/url_launcher_android/pubspec.yaml

@@ -2,8 +2,7 @@ name: url_launcher_android
 description: Android implementation of the url_launcher plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/url_launcher/url_launcher_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+url_launcher%22
-version: 6.0.37
-
+version: 6.0.38
 environment:
   sdk: ">=2.18.0 <4.0.0"
   flutter: ">=3.3.0"