Add rn-tester ScrollViewIndicatorInsetsExample to demonstrate ScrollV…

…iew.automaticallyAdjustsScrollIndicatorInsets

packages/rn-tester/js/examples/ScrollView/ScrollViewIndicatorInsetsExample.ios.js

@@ -0,0 +1,116 @@
+'use strict';
+
+const React = require('react');
+
+const {
+  Button,
+  Dimensions,
+  Modal,
+  ScrollView,
+  StyleSheet,
+  Switch,
+  Text,
+  View,
+} = require('react-native');
+
+class ScrollViewIndicatorInsetsExample extends React.Component<
+  {...},
+  {|
+    enableAutoIndicatorInsets: boolean,
+    modalPresentationStyle: string,
+    modalVisible: boolean,
+  |},
+> {
+  state = {
+    enableAutoIndicatorInsets: true,
+    modalPresentationStyle: null,
+    modalVisible: false,
+  };
+
+  _setModalVisible = (modalVisible, modalPresentationStyle) => {
+    this.setState({
+      enableAutoIndicatorInsets: true,
+      modalVisible,
+      modalPresentationStyle,
+    });
+  };
+
+  _setEnableAutoIndicatorInsets = enableAutoIndicatorInsets => {
+    this.setState({
+      enableAutoIndicatorInsets,
+    });
+  };
+
+  render() {
+    const {height, width} = Dimensions.get('window');
+    return (
+      <View>
+        <Modal
+          animationType='slide'
+          visible={this.state.modalVisible}
+          onRequestClose={() => this._setModalVisible(false)}
+          presentationStyle={this.state.modalPresentationStyle}
+          statusBarTranslucent={false}
+          supportedOrientations={['portrait', 'landscape']}>
+          <View style={styles.modal}>
+            <ScrollView
+              contentContainerStyle={[
+                styles.scrollViewContent,
+                {
+                  height: (height * 1.2),
+                  width: (width * 1.2),
+                },
+              ]}
+              automaticallyAdjustsScrollIndicatorInsets={this.state.enableAutoIndicatorInsets}
+              style={styles.scrollView}>
+              <Text>automaticallyAdjustsScrollIndicatorInsets</Text>
+              <Switch
+                onValueChange={v => this._setEnableAutoIndicatorInsets(v)}
+                value={this.state.enableAutoIndicatorInsets}
+                style={styles.switch}/>
+              <Button
+                onPress={() => this._setModalVisible(false)}
+                title='Close'/>
+            </ScrollView>
+          </View>
+        </Modal>
+        <Button
+          onPress={() => this._setModalVisible(true, 'pageSheet')}
+          title='Present Sheet Modal with ScrollView'/>
+        <Button
+          onPress={() => this._setModalVisible(true, 'fullscreen')}
+          title='Present Fullscreen Modal with ScrollView'/>
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  modal: {
+    flex: 1,
+  },
+  scrollView: {
+    flex: 1,
+    height: 1000,
+  },
+  scrollViewContent: {
+    alignItems: 'center',
+    backgroundColor: '#ffaaaa',
+    justifyContent: 'flex-start',
+    paddingTop: 200,
+  },
+  switch: {
+    marginBottom: 40,
+  },
+});
+
+exports.title = 'ScrollViewIndicatorInsets';
+exports.category = 'iOS';
+exports.description =
+  'ScrollView automaticallyAdjustsScrollIndicatorInsets adjusts scroll indicator insets using OS-defined logic on iOS 13+.';
+exports.examples = [
+  {
+    title: '<ScrollView> automaticallyAdjustsScrollIndicatorInsets Example',
+    render: (): React.Node => <ScrollViewIndicatorInsetsExample/>,
+  },
+];

packages/rn-tester/js/utils/RNTesterList.ios.js

@@ -118,6 +118,10 @@ const ComponentExamples: Array<RNTesterExample> = [
     module: require('../examples/ScrollView/ScrollViewAnimatedExample'),
     supportsTVOS: true,
   },
+  {
+    key: 'ScrollViewIndicatorInsetsExample',
+    module: require('../examples/ScrollView/ScrollViewIndicatorInsetsExample'),
+  },
   {
     key: 'SectionList-inverted',
     module: require('../examples/SectionList/SectionList-inverted'),