Incubator.Toast - fix error on Android with no image (#2821)

Author: M-i-k-e-l

demo/src/screens/incubatorScreens/IncubatorToastScreen.tsx

@@ -19,7 +19,6 @@ const TOAST_MESSAGES = {
   offline: 'Check Your Internet Connection'
 };
 
-// TODO: "ReactImageView: Image source "null" doesn't exist" (Android + preset "none")
 class ToastsScreen extends Component {
   showToast = false; // keep this state in class instance for immediate response
   state = {

src/incubator/toast/index.tsx

@@ -1,5 +1,12 @@
 import React, {PropsWithChildren, useCallback, useEffect, useMemo, useRef, useState} from 'react';
-import {ActivityIndicator, StyleSheet, findNodeHandle, AccessibilityInfo, ViewStyle, LayoutChangeEvent} from 'react-native';
+import {
+  ActivityIndicator,
+  StyleSheet,
+  findNodeHandle,
+  AccessibilityInfo,
+  ViewStyle,
+  LayoutChangeEvent
+} from 'react-native';
 import _ from 'lodash';
 import {Constants, asBaseComponent} from '../../commons/new';
 import {useDidUpdate} from '../../hooks';
@@ -170,9 +177,11 @@ const Toast = (props: PropsWithChildren<ToastProps>) => {
   };
 
   const renderIcon = () => {
-    return (
-      <Icon source={toastPreset.icon} resizeMode={'contain'} style={styles.icon} tintColor={toastPreset.iconColor}/>
-    );
+    if (toastPreset.icon) {
+      return (
+        <Icon source={toastPreset.icon} resizeMode={'contain'} style={styles.icon} tintColor={toastPreset.iconColor}/>
+      );
+    }
   };
 
   const renderToastContent = () => {