REACT NATIVE - Simple Flat List with Grid

 //import liraries

import React, {Component} from 'react';

import {View, Image,FlatList, StyleSheet, SafeAreaView,StatusBar} from 'react-native';

const DATA=

[{"id":"4eh","url":"https://cdn2.thecatapi.com/images/4eh.jpg","width":720,"height":540},{"id":"7i1","url":"https://cdn2.thecatapi.com/images/7i1.jpg","width":600,"height":900},{"id":"9oo","url":"https://cdn2.thecatapi.com/images/9oo.jpg","width":537,"height":720},{"id":"9ss","url":"https://cdn2.thecatapi.com/images/9ss.jpg","width":600,"height":897},{"id":"bi2","url":"https://cdn2.thecatapi.com/images/bi2.jpg","width":500,"height":666},{"id":"bjr","url":"https://cdn2.thecatapi.com/images/bjr.jpg","width":375,"height":500},{"id":"chc","url":"https://cdn2.thecatapi.com/images/chc.gif","width":500,"height":417},{"id":"ddp","url":"https://cdn2.thecatapi.com/images/ddp.jpg","width":612,"height":612},{"id":"MTkwMTQ2OQ","url":"https://cdn2.thecatapi.com/images/MTkwMTQ2OQ.jpg","width":819,"height":1024},{"id":"MjAyMTk2MQ","url":"https://cdn2.thecatapi.com/images/MjAyMTk2MQ.jpg","width":1200,"height":800}];

// create a component

const ImageFlatList = () => {

//const [dataSource, setDataSource] = useState(DATA);

return (

<SafeAreaView style={styles.container}>

<FlatList

data={DATA}

renderItem={({item}) => (

<View

style={{

flex: 1,

flexDirection: 'column',

margin: 1,

}}>

<Image style={styles.imageThumbnail} source={{uri: item.url}} />

</View>

)}

//Setting the number of column

numColumns={2}

keyExtractor={(item, index) => index.toString()}

/>

</SafeAreaView>

);

};

// define your styles

const styles = StyleSheet.create({

container: {

flex: 1,

marginTop: StatusBar.marginTop || 0,

},

imageThumbnail: {

justifyContent: 'center',

alignItems: 'center',

height: 200,

padding:1,

margin:2

},

});

//make this component available to the app

export default ImageFlatList;

Screenshot

REACT NATIVE - Simple Static ListView

 //import liraries

// Day 2 - Learning

import React, {Component} from 'react';

import {

View,

Text,

StyleSheet,

StatusBar,

FlatList,

SafeAreaView,

Pressable,

} from 'react-native';

const DATA = [

{

id: '1',

title: 'First Item',

},

{

id: '2',

title: 'Second Item',

},

{

id: '3',

title: 'Third Item',

},

{

id: '4',

title: 'Forth Item',

},

{

id: '5',

title: 'Fifth Item',

},

{

id: '6',

title: 'Sixth Item',

},

{

id: '7',

title: 'Seven Item',

},

];

const ListItemView = ({title}) => (

<Pressable

onPress={() => {

console.log('press - '+title);

}}>

<View style={styles.item}>

<Text style={styles.title}>{title}</Text>

</View>

</Pressable>

);

// create a component

const SimpleList_1 = () => {

return (

<SafeAreaView style={styles.container}>

<FlatList

data={DATA}

renderItem={({item}) => <ListItemView title={item.title} />}

keyExtractor={item => item.id}

/>

</SafeAreaView>

);

};

// define your styles

const styles = StyleSheet.create({

container: {

flex: 1,

marginTop: StatusBar.marginTop || 0,

},

item: {

backgroundColor: '#F5F5F5',

marginVertical: 5,

padding: 15,

marginHorizontal: 10,

},

title: {

fontSize: 14,

},

});

//make this component available to the app

export default SimpleList_1;

Screenshot

REACT NATIVE - Simple Login Screen

// Day 2 Learning

//import liraries

import React, {Component, useState} from 'react';

import {

View,

TouchableOpacity,

Text,

TextInput,

StyleSheet,

} from 'react-native';

// create a component

const LoginScreen1 = () => {

const [email, setEmail] = useState('');

const [password, setPassword] = useState('');

const handleSubmitPress = () => {

console.log(email + ' -- ' + password);

};

return (

<View style={styles.container}>

<Text

style={{

fontSize: 30,

textAlign: 'center',

}}>

Welcome back

</Text>

<TextInput

placeholder="Email"

placeholderTextColor="#010101"

onChangeText={text => {

//console.log(text)

setEmail(text);

}}

style={styles.input}

/>

<TextInput

placeholder="Password"

placeholderTextColor="#010101"

secureTextEntry={true}

onChangeText={text => {

//console.log(text)

setPassword(text);

}}

style={styles.input}

/>

<TouchableOpacity onPress={handleSubmitPress} style={styles.submitButton}>

<Text style={styles.submitButtonText}> Login </Text>

</TouchableOpacity>

</View>

);

};

// define your styles

const styles = StyleSheet.create({

safeAreacontainer: {

flex: 1,

},

container: {

flex: 1,

paddingTop: 30,

justifyContent: 'center',

},

input: {

backgroundColor: '#F4F4F5',

margin: 15,

height: 48,

borderColor: 'transparent',

borderWidth: 1,

padding: 10,

},

submitButton: {

backgroundColor: '#057AFF',

padding: 10,

margin: 15,

height: 40,

alignItems: 'center',

},

submitButtonText: {

color: 'white',

fontWeight: 'bold',

justifyContent: 'center',

},

});

//make this component available to the app

export default LoginScreen1;

 Screenshot

REACT NATIVE - SIMPLE LAYOUT FLEX EXAMPLE

 import React from 'react';

import {View, StyleSheet, SafeAreaView} from 'react-native';

// create a component

const App = () => {

return (

<SafeAreaView style={styles.safeAreacontainer}>

<View style={styles.mainContainer}>

<View style={styles.box1} />

<View style={styles.box2} />

<View style={styles.box3} />

</View>

</SafeAreaView>

);

};

// define your styles

const styles = StyleSheet.create({

safeAreacontainer: {

flex: 1,

},

mainContainer: {

flex: 1,

flexDirection: 'column',

},

box1: {

flex: 1,

backgroundColor: '#4C6663',

},

box2: {

flex: 8,

backgroundColor: '#C9D7F8',

},

box3: {

flex: 1,

backgroundColor: '#7D4767',

},

});

//make this component available to the app

export default App;

Login Screen using SwiftUI

 

Simple Login Screen using SwiftUI 

===========================

//

//  LoginScreen.swift

//  iOSApp1

//

//  Created by Pratap Kumar on 04/05/23.

//

import SwiftUI

struct LoginScreen: View {

    

    @State var username : String = "";

    @State var email : String = "";

    @State var password :String = "";

    

    var colorBlue: Color = Color.blue

    var grayBackground: Color = Color.gray.opacity(0.1)

    

    @State private var showingAlert = false

    

    var body: some View {

        

       

            VStack{

                               

                // Welcome Label

                Text("Welcome, User")

                    .foregroundColor(colorBlue)

                    .padding(.bottom, 30).font(.largeTitle)

                

                

                // Email Address Field

                HStack{

                    Image(systemName:"envelope.fill").foregroundColor(Color.blue)

                              TextField("Email Address", text: $email)

                }.padding().background(grayBackground).cornerRadius(5.0).padding(.bottom,10)

                

               

                

                // Password Field

                HStack{

                    Image(systemName:"lock.fill").foregroundColor(Color.blue)

                    SecureField("Password", text: $password)

                }.padding().background(grayBackground).cornerRadius(5.0).padding(.bottom,10)

                

                    

                Button(action: {

                    showingAlert = true

                }){

                    Text("Login")

                        .font(.headline)

                     .foregroundColor(.white)

                     .padding()

                     .frame(width: 150, height: 50)

                     .background(colorBlue)

                     .cornerRadius(10.0)

                } .alert(isPresented: $showingAlert) {

                    Alert(title: Text("Login Details"),

                          message: Text("Email : \(email)\nPassword : \(password)"),

                          primaryButton: .destructive(Text("OK")),

                          secondaryButton: .cancel(Text("Cancel")))

                }

                

                

            

                

            }.padding(.horizontal)

        }

    }

struct LoginScreen_Previews: PreviewProvider {

    static var previews: some View {

        LoginScreen()

    }

}

Screenshot

============

Stack View widget example

 

Container(
      child: Stack(
        children: [
          // Container with color blue
          Container(
            height: 150,
            width: double.infinity,
            decoration: BoxDecoration(
                color: Colors.blue,
                border: Border.all(width: 1, color: Colors.grey),
                borderRadius: BorderRadius.all(Radius.circular(8))),
          ),

          Positioned(
            child: Card(
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(20),
                //set border radius more than 50% of height and width to make circle
              ),
              elevation: 1,
              color: Colors.white,
              child: Container(
                  height: 36, width: 36, child: Icon(Icons.safety_check)),
            ),
          ),

          // top right icon
          Positioned(
            left: MediaQuery.of(context).size.width - 70,
            child: Card(
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(20),
                //set border radius more than 50% of height and width to make circle
              ),
              elevation: 1,
              color: Colors.white,
              child: Container(
                  height: 36, width: 36, child: Icon(Icons.camera_alt)),
            ),
          ),

          // Botton Left Icon
          Positioned(
            top: 100,
            child: Card(
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(20),
                //set border radius more than 50% of height and width to make circle
              ),
              elevation: 1,
              color: Colors.white,
              child:
                  Container(height: 36, width: 36, child: Icon(Icons.sailing)),
            ),
          ),

          // bottom right icon
          Positioned(
            left: MediaQuery.of(context).size.width - 70,
            top: 100,
            child: Card(
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(20),
                //set border radius more than 50% of height and width to make circle
              ),
              elevation: 1,
              color: Colors.white,
              child:
                  Container(height: 36, width: 36, child: Icon(Icons.gamepad)),
            ),
          ),
        ],
      ),
    );

Add Border, BorderColor, Align to Container

 

 Container(
              height: 150,
              width: 150,
              margin: EdgeInsets.all(8),
              decoration: BoxDecoration(
                  borderRadius: BorderRadius.all(Radius.circular(8)),
                  color: Colors.blue,
                  border: Border.all(width: 5, color: Colors.green)),
              padding: EdgeInsets.symmetric(horizontal: 10, vertical: 8),
              child: Align(
                alignment: Alignment.center,
                child: Text(
                  "Container 1",
                  style: TextStyle(color: Colors.white),
                ),
              ),
            ),

Screenshot: