fix: defer calling onSelect until after animation (#248)

- Fixes #203

example/App.tsx

@@ -12,6 +12,7 @@ import {
   ScrollView,
   SafeAreaView,
   TouchableOpacity,
+  Share,
 } from 'react-native';
 
 import ShowActionSheetButton from './ShowActionSheetButton';
@@ -19,7 +20,7 @@ import ShowActionSheetButton from './ShowActionSheetButton';
 type Props = ActionSheetProps;
 
 interface State {
-  selectedIndex: number | null;
+  selectedIndex?: number | null;
   isModalOpen: boolean;
 }
 
@@ -29,7 +30,7 @@ class App extends React.Component<Props, State> {
     isModalOpen: false,
   };
 
-  _updateSelectionText = (selectedIndex: number) => {
+  _updateSelectionText = (selectedIndex?: number) => {
     this.setState({
       selectedIndex,
     });
@@ -38,7 +39,9 @@ class App extends React.Component<Props, State> {
   _renderSelectionText = () => {
     const { selectedIndex } = this.state;
     const text =
-      selectedIndex === null ? 'No Option Selected' : `Option #${selectedIndex + 1} Selected`;
+      selectedIndex === null || selectedIndex === undefined
+        ? 'No Option Selected'
+        : `Option #${selectedIndex + 1} Selected`;
     return <Text style={styles.selectionText}>{text}</Text>;
   };
 
@@ -50,6 +53,23 @@ class App extends React.Component<Props, State> {
     this.setState((prevState) => ({ isModalOpen: !prevState.isModalOpen }));
   };
 
+  async _onShare() {
+    try {
+      const result = await Share.share({
+        message: 'React Native | A framework for building native apps using React',
+      });
+      if (result.action === Share.sharedAction) {
+        if (result.activityType) {
+          // shared with activity type of result.activityType
+        } else {
+          // shared
+        }
+      } else if (result.action === Share.dismissedAction) {
+        // dismissed
+      }
+    } catch (error) {}
+  }
+
   _renderButtons() {
     const { showActionSheetWithOptions } = this.props;
     return (
@@ -86,7 +106,7 @@ class App extends React.Component<Props, State> {
         <ShowActionSheetButton
           title="Nested Action Sheets"
           onSelection={(index) => {
-            if (index < 3) {
+            if (!index || index < 3) {
               showActionSheetWithOptions(
                 {
                   title: 'Sub Action Sheet',
@@ -99,6 +119,21 @@ class App extends React.Component<Props, State> {
           }}
           showActionSheetWithOptions={showActionSheetWithOptions}
         />
+        <ShowActionSheetButton
+          title="Share Menu"
+          showActionSheetWithOptions={() =>
+            showActionSheetWithOptions(
+              {
+                title: 'Share Menu',
+                options: ['Share', 'Cancel'],
+                cancelButtonIndex: 1,
+              },
+              (i) => {
+                i === 0 && this._onShare();
+              }
+            )
+          }
+        />
         {this._renderSectionHeader('Android-Only Options')}
         <ShowActionSheetButton
           title="Icons"

example/ShowActionSheetButton.tsx

@@ -11,9 +11,9 @@ interface Props {
   title: string;
   showActionSheetWithOptions: (
     options: ActionSheetOptions,
-    callback: (buttonIndex: number) => void
+    callback: (buttonIndex?: number) => void
   ) => void;
-  onSelection: (index: number) => void;
+  onSelection: (index?: number) => void;
   withTitle?: boolean;
   withMessage?: boolean;
   withIcons?: boolean;
@@ -52,7 +52,7 @@ export default class ShowActionSheetButton extends React.PureComponent<Props> {
     } = this.props;
 
     // Same interface as https://facebook.github.io/react-native/docs/actionsheetios.html
-    const options = ['Delete', 'Disabled', 'Save', 'Share', 'Cancel'];
+    const options = ['Delete', 'Disabled', 'Save', 'Cancel'];
     const icons = withIcons
       ? [icon('delete'), icon('save'), icon('share'), icon('cancel')]
       : undefined;
@@ -62,7 +62,7 @@ export default class ShowActionSheetButton extends React.PureComponent<Props> {
       : undefined;
     const destructiveButtonIndex = 0;
     const disabledButtonIndices = [1];
-    const cancelButtonIndex = 4;
+    const cancelButtonIndex = 3;
     const textStyle: TextStyle | undefined = withCustomStyles
       ? {
           fontSize: 20,
@@ -120,7 +120,7 @@ export default class ShowActionSheetButton extends React.PureComponent<Props> {
         // Android only,
         useModal,
       },
-      (buttonIndex: number) => {
+      (buttonIndex?: number) => {
         // Do something here depending on the button index selected
         onSelection(buttonIndex);
       }

src/ActionSheet/index.tsx

@@ -49,7 +49,7 @@ export default class ActionSheet extends React.Component<Props, State> {
     sheetOpacity: new Animated.Value(0),
   };
 
-  _deferNextShow?: () => void = undefined;
+  _deferAfterAnimation?: () => void = undefined;
 
   _setActionSheetHeight = ({ nativeEvent }: any) =>
     (this._actionSheetHeight = nativeEvent.layout.height);
@@ -171,7 +171,7 @@ export default class ActionSheet extends React.Component<Props, State> {
     const { isVisible, overlayOpacity, sheetOpacity } = this.state;
 
     if (isVisible) {
-      this._deferNextShow = this.showActionSheetWithOptions.bind(this, options, onSelect);
+      this._deferAfterAnimation = this.showActionSheetWithOptions.bind(this, options, onSelect);
       return;
     }
 
@@ -201,7 +201,7 @@ export default class ActionSheet extends React.Component<Props, State> {
         this.setState({
           isAnimating: false,
         });
-        this._deferNextShow = undefined;
+        this._deferAfterAnimation = undefined;
       }
     });
     // @ts-ignore: Argument of type '"actionSheetHardwareBackPress"' is not assignable to parameter of type '"hardwareBackPress"'
@@ -231,7 +231,10 @@ export default class ActionSheet extends React.Component<Props, State> {
       return false;
     }
 
-    onSelect && onSelect(index);
+    if (onSelect) {
+      this._deferAfterAnimation = onSelect.bind(this, index);
+    }
+
     return this._animateOut();
   };
 
@@ -267,8 +270,8 @@ export default class ActionSheet extends React.Component<Props, State> {
           isAnimating: false,
         });
 
-        if (this._deferNextShow) {
-          this._deferNextShow();
+        if (this._deferAfterAnimation) {
+          this._deferAfterAnimation();
         }
       }
     });