Vernie  Heller

Vernie Heller

1591299300

Improving perceived precaching, and disabled navigation transitions

This article covers three strategies that, you can use in your application to improve perceived performance: image placeholders, precaching images,and disabling navigation transitions.

#performance #flutter #flutter-web

What is GEEK

Buddha Community

Improving perceived precaching, and disabled navigation transitions
Vernie  Heller

Vernie Heller

1591299300

Improving perceived precaching, and disabled navigation transitions

This article covers three strategies that, you can use in your application to improve perceived performance: image placeholders, precaching images,and disabling navigation transitions.

#performance #flutter #flutter-web

Trinity  Kub

Trinity Kub

1594769040

Bottom Tab View inside Navigation Drawer with React Navigation V5

Bottom Tab View + Navigation Drawer

This is an example of Bottom Tab View inside Navigation Drawer / Sidebar with React Navigation in React Native. We will use react-navigation to make a navigation drawer and Tab in this example. I hope you have already seen our post on React Native Navigation Drawer because in this post we are just extending the last post to show the Bottom Tab View inside the Navigation Drawer.

In this example, we have a navigation drawer with 3 screens in the navigation menu and a Bottom Tab on the first screen of the Navigation Drawer. When we open Screen1 the Bottom Tab will be visible and on the other options, this Bottom Tab will be invisible.

To Create a Drawer Navigator

<NavigationContainer>
  <Drawer.Navigator
    drawerContentOptions={{
      activeTintColor: '#e91e63',
      itemStyle: { marginVertical: 5 },
    }}>
    <Drawer.Screen
      name="HomeScreenStack"
      options={{ drawerLabel: 'Home Screen Option' }}
      component={HomeScreenStack} />
    <Drawer.Screen
      name="SettingScreenStack"
      options={{ drawerLabel: 'Setting Screen Option' }}
      component={SettingScreenStack} />
  </Drawer.Navigator>
</NavigationContainer>

To Create Bottom Tab Navigator

<Tab.Navigator
  initialRouteName="HomeScreen"
  tabBarOptions={{
    activeTintColor: 'tomato',
    inactiveTintColor: 'gray',
    style: {
      backgroundColor: '#e0e0e0',
    },
    labelStyle: {
      textAlign: 'center',
      fontSize: 16
    },
  }}>
  <Tab.Screen
    name="HomeScreen"
    component={HomeScreen}
    options={{
      tabBarLabel: 'Home Screen',
      // tabBarIcon: ({ color, size }) => (
      //   <MaterialCommunityIcons name="home" color={color} size={size} />
      // ),
    }}  />
  <Tab.Screen
    name="ExploreScreen"
    component={ExploreScreen}
    options={{
      tabBarLabel: 'Explore Screen',
      // tabBarIcon: ({ color, size }) => (
      //   <MaterialCommunityIcons name="settings" color={color} size={size} />
      // ),
    }} />
</Tab.Navigator>

In this example, we will make a Tab Navigator inside a Drawer Navigator so let’s get started.

To Make a React Native App

Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react-native init to make our React Native App. Assuming that you have node installed, you can use npm to install the react-native-cli command line utility. Open the terminal and go to the workspace and run

npm install -g react-native-cli

Run the following commands to create a new React Native project

react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

react-native init ProjectName --version X.XX.X

react-native init ProjectName --version react-native@next


This will make a project structure with an index file named App.js in your project directory.

#bottom navigation #drawer navigation #react #react navigation

Willis  Mills

Willis Mills

1625098260

#2 Stack Navigator Transitions | React Navigation 5

We’ll learn How to add Transitions and Animations to react Navigation Stack Navigator

New To React Native?
React Native Foundation + Firebase + Redux :
https://www.udemy.com/course/react-native-foundation/?referralCode=5AFD942A55973C3D60CB

Part 1 - https://youtu.be/okfuacBX-QQ
Project Files : https://github.com/nathvarun/React-Navigation-5
Starter Project - Branch - Intro
Complete files - Branch 02.

Twitter https://twitter.com/nathvarun
Instagram https://www.instagram.com/nathvarun25
Facebook https://www.facebook.com/nathvarun
Email : unsureprogrammer@gmail.com

#react navigation 5 #react native #firebase #redux #stack navigator

Qlevar Router, a Clever Navigator 2 Wrapper.

Have you start using the New Flutter Navigator 2 😍?

lets take a look of what Navigator 2 will brings in to the table.

1. a more Flutterish-reactive declarative style.

2. better support for screen replacing.

3. better support for multiple pushes and pops.

4. full support to incoming URLs (e.g.: Flutter Web and/or app deep linking).

5. full support to browser history while using Flutter Web.

that’s been said I bet you’re super excited to give it a try, So if you haven’t use it till now, then DON’T 😢

Please Note that **there is nothing wrong at all with the navigator 2 **itself but the problem is with HOW to use it, and the amount of boilerplate code you have to write to get the simplest task in action.

that has been said, let us see what we can do to get the most of Navigator 2 in the simplest terms.

Well? say hi to  Qlevar Router 👏

Qlevar

#dart #navigator #navigation #flutter

Angela  Dickens

Angela Dickens

1596321960

Tab View inside Navigation Drawer / Sidebar with React Navigation V5

Tab View + Navigation Drawer

This is an example of Tab View inside Navigation Drawer / Sidebar with React Navigation in React Native. We will use react-navigation to make a navigation drawer and Tab in this example. I hope you have already seen our post on React Native Navigation Drawer because in this post we are just extending the last post to show the Tab View inside the Navigation Drawer.

In this example, we have a navigation drawer with 3 screens in the navigation menu and a Tab View on the first screen of the Navigation Drawer. When we open Screen1 the Tab will be visible and on the other options, this Tab will be invisible.

To Create a Drawer Navigator

<NavigationContainer>
  <Drawer.Navigator
    drawerContentOptions={{
      activeTintColor: '#e91e63',
      itemStyle: { marginVertical: 5 },
    }}>
    <Drawer.Screen
      name="HomeScreenStack"
      options={{ drawerLabel: 'Home Screen Option' }}
      component={HomeScreenStack} />
    <Drawer.Screen
      name="SettingScreenStack"
      options={{ drawerLabel: 'Setting Screen Option' }}
      component={SettingScreenStack} />
  </Drawer.Navigator>
</NavigationContainer>

To Create Material Top Tab Navigator

<Tab.Navigator
  initialRouteName="HomeScreen"
  tabBarOptions={{
    activeTintColor: '#FFFFFF',
    inactiveTintColor: '#F8F8F8',
    style: {
      backgroundColor: '#f4511e',
    },
    labelStyle: {
      textAlign: 'center',
    },
    indicatorStyle: {
      borderBottomColor: '#87B56A',
      borderBottomWidth: 2,
    },
  }}>
  <Tab.Screen
    name="HomeScreen"
    component={HomeScreen}
    options={{
      tabBarLabel: 'Home Screen',
      // tabBarIcon: ({ color, size }) => (
      //   <MaterialCommunityIcons name="home" color={color} size={size} />
      // ),
    }}  />
  <Tab.Screen
    name="ExploreScreen"
    component={ExploreScreen}
    options={{
      tabBarLabel: 'Explore Screen',
      // tabBarIcon: ({ color, size }) => (
      //   <MaterialCommunityIcons name="settings" color={color} size={size} />
      // ),
    }} />
</Tab.Navigator>

In this example, we will make a Tab Navigator inside a Drawer Navigator so let’s get started.

To Make a React Native App

Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react-native init to make our React Native App. Assuming that you have node installed, you can use npm to install the react-native-cli command line utility. Open the terminal and go to the workspace and run

npm install -g react-native-cli

Run the following commands to create a new React Native project

react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

react-native init ProjectName --version X.XX.X

react-native init ProjectName --version react-native@next


This will make a project structure with an index file named App.js in your project directory.

## Installation of Dependencies

To install all the dependencies open the terminal and jump into your project

cd ProjectName


Run the following commands

npm install @react-navigation/native --save

npm install @react-navigation/drawer --save

npm install @react-navigation/stack --save

npm install @react-navigation/material-top-tabs react-native-tab-view --save

npm install react-native-reanimated react-native-gesture-handler react-native-screens react-native-safe-area-context @react-native-community/masked-view --save


This command will copy all the dependencies into your node_module directory. –save is optional, it is just to update dependencies in your package.json file.

## CocoaPods Installation

After the updation of React Native 0.60, they have introduced [autolinking](https://aboutreact.com/react-native-autolinking/) so we do not require to link the library but need to install pods. So to install pods use

npx pod-install ios


## Project Structure

To start with this example you need to create a directory named **pages** in your project and create three files ExploreScreen.js, HomeScreen.js, and SettingScreen.js.

These files will be the Navigation Screens of the Drawer Navigator.

## Code

Now Open App.js in any code editor and replace the code with the following code

### App.js

#how to #drawer navigation #tab navigation #react