message: Possible Fix for issue
  Replaced ListView with FlatList in Picker
diff: import React, { Component } from "react";
  import PropTypes from "prop-types";
  import createReactClass from "create-react-class";
  -import { Picker, Modal, View, ListView, ViewPropTypes } from "react-native";
  +import { Picker, Modal, View, ViewPropTypes, FlatList } from "react-native";
  import _ from "lodash";
  import { Text } from "./Text";
  import { List } from "./List";
  @@ -185,31 +185,29 @@ class PickerNB extends Component {
  <Container>
  {this.renderHeader()}
  <Content>
  - <List
  - dataArray={this.state.dataSource}
  - renderRow={child => (
  - <ListItem
  - selected={child.props.value === this.props.selectedValue}
  + <FlatList
  + data={this.state.dataSource}
  + renderItem={({item}) => <ListItem
  + selected={item.props.value === this.props.selectedValue}
  button
  style={this.props.itemStyle}
  onPress={() => {
  this._setModalVisible(false);
  - this.props.onValueChange(child.props.value);
  - this.setState({ current: child.props.label });
  + this.props.onValueChange(item.props.value);
  + this.setState({ current: item.props.label });
  }}
  >
  <Text style={this.props.itemTextStyle}>
  - {child.props.label}
  + {item.props.label}
  </Text>
  <Right>
  - {child.props.value === this.props.selectedValue ? (
  + {item.props.value === this.props.selectedValue ? (
  <Radio selected />
  ) : (
  <Radio selected={false} />
  )}
  </Right>
  - </ListItem>
  - )}
  + </ListItem>}
  />
  </Content>
  </Container>
  