App for ETo

Let's break down how to create an Android app with a UI similar to your screenshot using Vite, React, and TypeScript. Since you're targeting Android, we'll leverage a framework that allows for native mobile development with React, such as React Native or Expo.

Here's a structured approach and code example using React Native:

1. Set up your development environment:

• Install Node.js and npm (or yarn): Ensure you have Node.js and npm (Node Package Manager) or yarn installed on your system.
• Install Expo CLI: Expo simplifies React Native development. Install it globally:
  Bash

  npm install -g expo-cli
  

• Create a new Expo project:
  Bash

  expo init AgroFlowApp  # Choose a name for your app
  cd AgroFlowApp
  

  Select a template: Choose "blank" or "template with tabs" (if you want a navigation structure).

2. Install necessary packages:

Bash

npm install react-native-paper @react-navigation/native @react-navigation/stack react-native-safe-area-context @react-native-community/datetimepicker
# For Expo managed workflow (if you chose it during project creation)
expo install react-native-paper @react-navigation/native @react-navigation/stack react-native-safe-area-context @react-native-community/datetimepicker

• react-native-paper: For UI components like Text Inputs, Buttons, etc. (Material Design 3)
• @react-navigation: For navigation between screens.
• @react-native-community/datetimepicker: For date/time pickers.

3. Project Structure and Code:

• Create components: Create separate .tsx files for each section of your UI (e.g., InputForm.tsx, PredictionResults.tsx, HistoricalTrends.tsx).

Example: InputForm.tsx

TypeScript

import React, { useState } from 'react';
import { View, StyleSheet } from 'react-native';
import { TextInput, Button, Card } from 'react-native-paper';
import DateTimePicker from '@react-native-community/datetimepicker';

interface InputFormData {
  temperature: string;
  windSpeed: string;
  humidity: string;
  date: Date;
}

const InputForm: React.FC = () => {
  const [inputData, setInputData] = useState<InputFormData>({
    temperature: '',
    windSpeed: '',
    humidity: '',
    date: new Date(),
  });
  const [showDatePicker, setShowDatePicker] = useState(false);

  const handleInputChange = (field: keyof InputFormData, value: string) => {
    setInputData({ ...inputData, [field]: value });
  };

  const handleDateChange = (event: any, selectedDate: Date | undefined) => {
    const currentDate = selectedDate || inputData.date;
    setShowDatePicker(Platform.OS === 'ios');
    setInputData({ ...inputData, date: currentDate });
  };

  return (
    <Card style={styles.card}>
      <Card.Title title="Input Meteorological Data" />
      <Card.Content>
        <TextInput
          label="Temperature (°C)"
          value={inputData.temperature}
          onChangeText={(text) => handleInputChange('temperature', text)}
          keyboardType="numeric"
          style={styles.input}
        />
        {/* Similar inputs for Wind Speed and Humidity */}

        <Button mode="contained" onPress={() => setShowDatePicker(true)}>
          Select Date
        </Button>
        {showDatePicker && (
          <DateTimePicker
            testID="dateTimePicker"
            value={inputData.date}
            mode="date"
            is24Hour={true}
            display="default"
            onChange={handleDateChange}
          />
        )}

        <Button mode="contained" onPress={() => { /* Handle prediction logic */ }}>
          Calculate
        </Button>
      </Card.Content>
    </Card>
  );
};

const styles = StyleSheet.create({
  card: {
    margin: 16,
  },
  input: {
    marginBottom: 16,
  },
});

export default InputForm;

4. Integrate components into your screen (e.g., App.tsx or a screen component):

TypeScript

import React from 'react';
import { ScrollView, StyleSheet } from 'react-native';
import InputForm from './InputForm'; // Import your components
import PredictionResults from './PredictionResults'; // And others

const App: React.FC = () => {
  return (
    <ScrollView style={styles.container}>
      <InputForm />
      <PredictionResults />
      {/* ... other components */}
    </ScrollView>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 16,
  },
});

export default App;

5. Run the app:

Bash

expo start  # Or react-native run-android/run-ios if you didn't use Expo

Key points and further development:

• Styling: Use StyleSheet or a styling library like styled-components for more advanced styling.
• Data Handling: Implement the logic for fetching meteorological data, making predictions, and handling user input.
• Navigation: Use @react-navigation to set up navigation between different screens (if needed).
• Backend Integration: If you need to connect to a backend server for data or predictions, use fetch or axios.
• Testing: Write unit and integration tests to ensure your app works correctly.
• Deployment: Follow the React Native or Expo deployment guides to build and release your app to app stores.

This detailed breakdown should provide a strong foundation for building your AgroFlow app. Remember to install the necessary packages, create components for each section, and handle data and logic as needed. Feel free to ask further questions as you progress!