feat(android-distribution): Add update check button to Android sample (#4764)

- Add sentry-android-distribution as debug-only dependency
- Add "Check for Update" button to main activity UI
- Implement handler that calls Sentry.distribution().checkForUpdate()
- Handle all UpdateStatus types: NewRelease, UpToDate, NoNetwork, UpdateError
- Display results in toast messages

Note: This feature requires proper distribution tokens and configuration to work.
This change makes it easier to test the distribution integration.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude <noreply@anthropic.com>

Author: runningcode

sentry-samples/sentry-samples-android/build.gradle.kts

@@ -150,6 +150,7 @@ dependencies {
   implementation(libs.sentry.native.ndk)
   implementation(libs.timber)
 
+  debugImplementation(projects.sentryAndroidDistribution)
   debugImplementation(libs.leakcanary)
 }
 

sentry-samples/sentry-samples-android/src/main/java/io/sentry/samples/android/MainActivity.java

@@ -5,12 +5,14 @@
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.os.Handler;
+import android.widget.Toast;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import io.sentry.Attachment;
 import io.sentry.ISpan;
 import io.sentry.MeasurementUnit;
 import io.sentry.Sentry;
+import io.sentry.UpdateStatus;
 import io.sentry.instrumentation.file.SentryFileOutputStream;
 import io.sentry.protocol.Feedback;
 import io.sentry.protocol.User;
@@ -304,6 +306,40 @@ public void run() {
           Sentry.replay().enableDebugMaskingOverlay();
         });
 
+    binding.checkForUpdate.setOnClickListener(
+        view -> {
+          Toast.makeText(this, "Checking for updates...", Toast.LENGTH_SHORT).show();
+          Sentry.distribution()
+              .checkForUpdate(
+                  result -> {
+                    runOnUiThread(
+                        () -> {
+                          String message;
+                          if (result instanceof UpdateStatus.NewRelease) {
+                            UpdateStatus.NewRelease newRelease = (UpdateStatus.NewRelease) result;
+                            message =
+                                "Update available: "
+                                    + newRelease.getInfo().getBuildVersion()
+                                    + " (Build "
+                                    + newRelease.getInfo().getBuildNumber()
+                                    + ")\nDownload URL: "
+                                    + newRelease.getInfo().getDownloadUrl();
+                          } else if (result instanceof UpdateStatus.UpToDate) {
+                            message = "App is up to date!";
+                          } else if (result instanceof UpdateStatus.NoNetwork) {
+                            UpdateStatus.NoNetwork noNetwork = (UpdateStatus.NoNetwork) result;
+                            message = "No network connection: " + noNetwork.getMessage();
+                          } else if (result instanceof UpdateStatus.UpdateError) {
+                            UpdateStatus.UpdateError error = (UpdateStatus.UpdateError) result;
+                            message = "Error checking for updates: " + error.getMessage();
+                          } else {
+                            message = "Unknown status";
+                          }
+                          Toast.makeText(this, message, Toast.LENGTH_LONG).show();
+                        });
+                  });
+        });
+
     setContentView(binding.getRoot());
   }
 

sentry-samples/sentry-samples-android/src/main/res/layout/activity_main.xml

@@ -170,6 +170,12 @@
       android:layout_height="wrap_content"
       android:text="@string/enable_replay_debug_mode"/>
 
+    <Button
+      android:id="@+id/check_for_update"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:text="@string/check_for_update"/>
+
   </LinearLayout>
 
 </ScrollView>

sentry-samples/sentry-samples-android/src/main/res/values/strings.xml

@@ -29,6 +29,7 @@
   <string name="throw_in_coroutine">Throw exception in coroutine</string>
   <string name="enable_replay_debug_mode">Enable Replay Debug Mode</string>
   <string name="show_dialog">Show Dialog</string>
+  <string name="check_for_update">Check for Update</string>
   <string name="back_main">Back to Main Activity</string>
   <string name="tap_me">text</string>
   <string name="lipsum">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin nibh lorem, venenatis sed nulla vel, venenatis sodales augue. Mauris varius elit eu ligula volutpat, sed tincidunt orci porttitor. Donec et dignissim lacus, sed luctus ipsum. Praesent ornare luctus tortor sit amet ultricies. Cras iaculis et diam et vulputate. Cras ut iaculis mauris, non pellentesque diam. Nunc in laoreet diam, vitae accumsan eros. Morbi non nunc ac eros molestie placerat vitae id dolor. Quisque ornare aliquam ipsum, a dapibus tortor. In eu sodales tellus.