Add attachScreenshotOnlyWhenResumed to options (#1700)

Author: denrase

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Features
 
 - Breadcrumbs for database operations ([#1656](https://github.com/getsentry/sentry-dart/pull/1656))
+- Add `attachScreenshotOnlyWhenResumed` to options ([#1700](https://github.com/getsentry/sentry-dart/pull/1700))
 
 ### Dependencies
 

flutter/lib/src/event_processor/screenshot_event_processor.dart

@@ -8,6 +8,7 @@ import '../screenshot/sentry_screenshot_widget.dart';
 import '../sentry_flutter_options.dart';
 import 'package:flutter/rendering.dart';
 import '../renderer/renderer.dart';
+import 'package:flutter/widgets.dart' as widget;
 
 class ScreenshotEventProcessor implements EventProcessor {
   final SentryFlutterOptions _options;
@@ -38,6 +39,14 @@ class ScreenshotEventProcessor implements EventProcessor {
       return event;
     }
 
+    if (_options.attachScreenshotOnlyWhenResumed &&
+        widget.WidgetsBinding.instance.lifecycleState !=
+            AppLifecycleState.resumed) {
+      _options.logger(SentryLevel.debug,
+          'Only attaching screenshots when application state is resumed.');
+      return event;
+    }
+
     final bytes = await _createScreenshot();
     if (bytes != null) {
       hint?.screenshot = SentryAttachment.fromScreenshotData(bytes);

flutter/lib/src/sentry_flutter_options.dart

@@ -167,6 +167,9 @@ class SentryFlutterOptions extends SentryOptions {
   /// The quality of the attached screenshot
   SentryScreenshotQuality screenshotQuality = SentryScreenshotQuality.high;
 
+  /// Only attach a screenshot when the app is resumed.
+  bool attachScreenshotOnlyWhenResumed = false;
+
   /// Enable or disable automatic breadcrumbs for User interactions Using [Listener]
   ///
   /// Requires adding the [SentryUserInteractionWidget] to the widget tree.