Dashboard.js (Screen freezes)

import React, { Component } from 'react';
import { View, Text, TouchableOpacity, ScrollView, StyleSheet } from 'react-native';
import { color } from '../constants/StyleConstants';
import AppHeader from '../components/AppHeader';
import Permissions from 'react-native-permissions';
import ConnectivityManager from 'react-native-connectivity-status'
import AppUser from '../apiServices/AppUser'
import { StackActions, NavigationActions } from 'react-navigation';
import Store from 'rn-json-store';
import {USER_TOKEN} from '../constants/KeyConstants';
import CalenderThreeDay from "./CalenderThreeDay";
import CalendarDayView from "./CalendarDayView";
import CalendarYearView from "./CalendarYearView";
import ShareWithCalendar from "./ShareWithCalendar";
import ShareWithAccount from "./ShareWithAccount";
import CalendarSetting from "./CalendarSetting";
import userStore from '../mobx/UserStore'
import { strings } from '../localization/Localization';

let appUser = AppUser.getInstance()
var classObj
export default class Dashboard extends Component {
constructor(props){
    super(props);
    classObj=this;
}
    componentWillMount() {
        console.log('ji');
        userStore.setListCategory(strings.GENERAL, 0);
        appUser.locationPermission()
    }
    onAddButtonPress() {
        classObj.props.navigation.navigate('CreateList');
    }
    onHomePress(){
    }
    render() {
        return (
            <View style={{ flex: 1, backgroundColor: color.WHITE_COLOR, alignItems: 'center' }}>
                <AppHeader onAddButton={this.onAddButtonPress} onHomePress={this.onHomePress}/>
                {/* <Text>dashboard</Text> */}
                <ScrollView showsVerticalScrollIndicator={false} style={{flex:1,width:"100%"}}>
                <View style={{alignItems:'center'}}>
                    <TouchableOpacity style={style.button} onPress={() => {
                        this.props.navigation.navigate({ routeName: CalendarYearView.SCREEN_KEY });
                    }}>
                        <Text>Calender Year View</Text>
                    </TouchableOpacity>
                    </View>
                </ScrollView>

            </View>
        );
    }
}

const style = StyleSheet.create({
    button: {
        width: 100, height: 50, backgroundColor: 'grey', justifyContent: 'center', alignItems: 'center', marginTop: 50
    }
});