implemented native share intent support for android and ios with chat and folder pickers

android/app/src/main/AndroidManifest.xml

@@ -25,6 +25,21 @@
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="image/*" />
+                <data android:mimeType="video/*" />
+                <data android:mimeType="application/*" />
+                <data android:mimeType="text/*" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND_MULTIPLE" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="image/*" />
+                <data android:mimeType="video/*" />
+                <data android:mimeType="application/*" />
+            </intent-filter>
         </activity>
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->

android/build.gradle

@@ -9,6 +9,29 @@ rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
 }
+// Pin every Android subproject to JVM 17 so plugins that ship Kotlin sources
+// compiled with a higher target (e.g. receive_sharing_intent at 21) or stale
+// Java compatibility (e.g. home_widget at 1.8) don't break the build under
+// newer Gradle/Kotlin tooling. Registered before evaluationDependsOn so the
+// afterEvaluate fires at the right point in the lifecycle.
+subprojects { sub ->
+    sub.afterEvaluate {
+        if (sub.hasProperty('android')) {
+            sub.android {
+                compileOptions {
+                    sourceCompatibility = JavaVersion.VERSION_17
+                    targetCompatibility = JavaVersion.VERSION_17
+                }
+            }
+        }
+        sub.tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
+            kotlinOptions {
+                jvmTarget = '17'
+            }
+        }
+    }
+}
+
 subprojects {
     project.evaluationDependsOn(':app')
 }