Fixes Android dismissModal from user_profile and thread screens (#1191)

* Android fix dismissModal from user profile

* Android fix dismissModal when no posts in thread

app/screens/thread/thread.js

@@ -3,6 +3,7 @@
 
 import React, {PureComponent} from 'react';
 import PropTypes from 'prop-types';
+import {Platform} from 'react-native';
 import {injectIntl, intlShape} from 'react-intl';
 
 import {General} from 'mattermost-redux/constants';
@@ -48,7 +49,7 @@ class Thread extends PureComponent {
 
     componentWillReceiveProps(nextProps) {
         if (this.props.postIds !== nextProps.postIds && !nextProps.postIds.length) {
-            this.props.navigator.pop();
+            this.close();
             return;
         }
 
@@ -61,6 +62,20 @@ class Thread extends PureComponent {
         this.props.actions.selectPost('');
     }
 
+    close = () => {
+        const {navigator} = this.props;
+
+        if (Platform.OS === 'ios') {
+            navigator.pop({
+                animated: true
+            });
+        } else {
+            navigator.dismissModal({
+                animationType: 'slide-down'
+            });
+        }
+    };
+
     render() {
         const {
             channelId,

app/screens/user_profile/user_profile.js

@@ -4,6 +4,7 @@
 import React, {PureComponent} from 'react';
 import PropTypes from 'prop-types';
 import {
+    Platform,
     ScrollView,
     Text,
     View,
@@ -39,6 +40,20 @@ class UserProfile extends PureComponent {
         user: PropTypes.object.isRequired
     };
 
+    close = () => {
+        const {navigator} = this.props;
+
+        if (Platform.OS === 'ios') {
+            navigator.popToRoot({
+                animated: true
+            });
+        } else {
+            navigator.dismissModal({
+                animationType: 'slide-down'
+            });
+        }
+    };
+
     displaySendMessageOption = () => {
         const {currentChannel, currentUserId, user} = this.props;
 
@@ -75,7 +90,7 @@ class UserProfile extends PureComponent {
     };
 
     sendMessage = async () => {
-        const {actions, currentDisplayName, intl, teammateNameDisplay, navigator, user} = this.props;
+        const {actions, currentDisplayName, intl, teammateNameDisplay, user} = this.props;
 
         // save the current channel display name in case it fails
         const currentChannelDisplayName = currentDisplayName;
@@ -98,9 +113,7 @@ class UserProfile extends PureComponent {
                 }
             );
         } else {
-            navigator.popToRoot({
-                animated: true
-            });
+            this.close();
         }
     };