calculator in react native

 app.js

import React, {useState} from 'react';
import {View, Text, StyleSheet, TextInput, Button} from 'react-native';
import Buttoncom from './components/buttons.js';
// const App= props=>{ es6
// function App(){
const App =props=> {
  const [result, setresult] = useState(0);
  const [num1, setnum1] = useState('');
  const [num2, setnum2] = useState('');
  return (
    <View style={styles.container}>
      <TextInput
        placeholder="enter first Value"
        style={styles.input}
        autoCapitalize="none"
        keyboardType="number-pad"
        autoFocus={true}
        value={num1}
        onChangeText={val1 => setnum1(val1)}
      />
      <TextInput
        placeholder="enter second Value"
        style={styles.input}
        autoCapitalize="none"
        keyboardType="number-pad"
        autoFocus={false}
        value={num2}
        onChangeText={val2 => setnum2(val2)}
      />
      <View style={styles.btncon}>
        <Button
          style={{color:'yellow'
          }}
          title="+"
          onPress={() => {
            const val1 = parseFloat(num1);
            const val2 = parseFloat(num2);

            if (val2 === 0) {
              setresult(`Aby ${val1} 0 se + nahi hota`);
            }else {
              setresult(`Sir ji apka answer hai ${val1 + val2}`);
            }
          }}
        />
        <Button
          style={{color: 'green'}}
          title="-"
          onPress={() => {
            const val1 = parseFloat(num1);
            const val2 = parseFloat(num2);
            if (val2 === 0) {
              setresult(`Aby ${val1} 0 se - nahi hota`);
            } else {
              setresult(`'Sir ji apka answer hai' ${val1 - val2}`);
            }
          }}
        />
        <Button
          style={{color: 'grey'}}
          title="x"
          onPress={() => {
            const val1 = parseFloat(num1);
            const val2 = parseFloat(num2);
            setresult(`Sir ji apka answer hai ${val1 * val2}`);
          }}
        />
        <Button
          style={{color: 'brown'}}
          title="/"
          onPress={() => {
            const val1 = parseFloat(num1);
            const val2 = parseFloat(num2);
            if (val2 == 0) {
              setresult('0 se nahi hoga');
            } else {
              setresult(`Sir ji apka answer hai ${val1 / val2}`);
            }
          }}
        />
      </View>
      <Text style={styles.text}>Result: {result}</Text>
    </View>
  );
};

export default App;

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
  },
  btncon: {
    flexDirection: 'row',
    width: 350,
    justifyContent: 'space-around',
    alignItems: 'center',
  },
  input: {
    borderBottomColor: 'green',
    borderBottomWidth: 2,
    marginVertical: 10,
    padding: 5,
    fontSize: 33,
  },
  text: {
    fontSize: 45,
    textAlign: 'center',
    marginTop: 20,
  },
});

******************************************************************
components
button.js
import React from 'react';
import {StyleSheet,TouchableOpacity,Text,TouchableHighlight
,TouchableNativeFeedback,TouchableWithoutFeedback} from 'react-native';

const Button = props=>{
    return(
        <TouchableHighlight onPress={props.onPress}>
            <Text style={{ ...styles.Buttonss, ...props.style}}>
                {props.title}
            </Text>

        </TouchableHighlight>
    );
}
export default Button;
const styles = StyleSheet.create({  
    Buttonss:{
    fontSize:48,
    textAlign:'center',
    backgroundColor:'yellow',
    padding:15,

}});
******************************************
pkg.json
  "dependencies": {
    "react": "17.0.1",
    "react-native": "0.64.2"
  },

Comments

Post a Comment

Popular posts from this blog

Privacy Policy for Live Weather Forecast - Realtime app

  Privacy Policy SMA Creative Studio built the Live Weather Forecast - Realtime app as a Free app. This SERVICE is provided by SMA Creative Studio at no cost and is intended for use as is. This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service. If you choose to use my Service, then you agree to the collection and use of information in relation to this policy. The Personal Information that I collect is used for providing and improving the Service. I will not use or share your information with anyone except as described in this Privacy Policy. The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at Live Weather Forecast - Realtime unless otherwise defined in this Privacy Policy. Information Collection and Use For a better experience, while using our Service, I may require you to provide us with certain personally identif...
Read more

NFC Checker App Privacy Policy

  Privacy Policy SMA Creative Studio built the NFC Checker app as a Free app. This SERVICE is provided by SMA Creative Studio at no cost and is intended for use as is. This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service. If you choose to use my Service, then you agree to the collection and use of information in relation to this policy. The Personal Information that I collect is used for providing and improving the Service. I will not use or share your information with anyone except as described in this Privacy Policy. The terms used in this Privacy Policy have the same meanings as in our Terms and Conditions, which are accessible at NFC Checker unless otherwise defined in this Privacy Policy. Information Collection and Use For a better experience, while using our Service, I may require you to provide us with certain personally identifiable information. The information that I ...
Read more

FlatList

 app.js import React , { useState } from 'react' ; import {   StyleSheet ,   View ,   Text ,   ScrollView ,   Platform ,   SafeAreaView ,   FlatList ,   TouchableOpacity , } from 'react-native' ; const App = () => {   const items = [     { id: 1 , name: 'imran' , age: 32 },     { id: 2 , name: 'kamran' , age: 22 },     { id: 3 , name: 'jabeel' , age: 14 },     { id: 4 , name: 'code' , age: 44 },     { id: 5 , name: 'with' , age: 78 },     { id: 6 , name: 'harry' , age: 32 },     { id: 7 , name: 'hellos' , age: 31 },     { id: 8 , name: 'majid' , age: 29 },     { id: 9 , name: 'sher' , age: 24 },     { id: 10 , name: 'muhammad' , age: 22 },     { id: 11 , name: 'asnari' , age: 32 },     { id: 12 , name: 'kamran' , age: 22 },     { id: 13 , name: 'jabeel' , age...
Read more