Firebase Data Connect 使用入门

使用集合让一切井井有条 根据您的偏好保存内容并对其进行分类。

import React from 'react';
import ReactDOM from 'react-dom/client';

// Generated queries.
// Update as needed with the path to your generated SDK.
import { listMovies, ListMoviesData } from '@movie-app/movies';

function App() {
  const [movies, setMovies] = useState<ListMoviesData['movies']>([]);
  useEffect(() => {
    listMovies.then(res => setMovies(res.data));
  }, []);
  return (
    movies.map(movie => <h1>{movie.title}</h1>);
  );
}

const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<App />);

import SwiftUI

import FirebaseDataConnect
// Generated queries.
// Update as needed with the package name of your generated SDK.
import <CONNECTOR-PACKAGE-NAME>

let connector = DataConnect.moviesConnector

struct ListMovieView: View {
@StateObject private var queryRef = connector.listMovies.ref()

    var body: some View {
        VStack {
            Button {
                Task {
                    do {
                        try await refresh()
                    } catch {
                        print("Failed to refresh: \(error)")
                    }
                }
            } label: {
                Text("Refresh")
            }

            // use the query results in a view
            ForEach(queryRef.data?.movies ?? []) { movie in
                    Text(movie.title)
                }
            }
    }
    @MainActor
    func refresh() async throws {
        _ = try await queryRef.execute()
    }

    struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ListMovieView()
    }
}

plugins {
  // Use whichever versions of these dependencies suit your application.
  // The versions shown here were the latest as of March 14, 2025.
  // Note, however, that the version of kotlin("plugin.serialization") must,
  // in general, match the version of kotlin("android").
  id("com.android.application") version "8.9.0"
  id("com.google.gms.google-services") version "4.4.2"
  val kotlinVersion = "2.1.10"
  kotlin("android") version kotlinVersion
  kotlin("plugin.serialization") version kotlinVersion
}

dependencies {
  // Use whichever versions of these dependencies suit your application.
  // The versions shown here were the latest versions as of March 14, 2025.
  implementation("com.google.firebase:firebase-dataconnect:16.0.0-beta04")
  implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.1")
  implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.7.3")

  // These dependencies are not strictly required, but will very likely be used
  // when writing modern Android applications.
  implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.9.0")
  implementation("androidx.appcompat:appcompat:1.7.0")
  implementation("androidx.activity:activity-ktx:1.10.1")
  implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.8.7")
  implementation("com.google.android.material:material:1.12.0")
}

import android.os.Bundle
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.lifecycleScope
import androidx.lifecycle.repeatOnLifecycle
import kotlinx.coroutines.launch


private val connector = com.myapplication.MoviesConnector.instance

class MainActivity : AppCompatActivity() {

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val textView: TextView = findViewById(R.id.text_view)

    lifecycleScope.launch {
      lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
        
        val result = connector.listMovies.runCatching { execute { } }
        
        val newTextViewText = result.fold(
          onSuccess = {
            val titles = it.data.movies.map { it.title }
            "${titles.size} movies: " + titles.joinToString(", ")
          },
          onFailure = { "ERROR: ${it.message}" }
        )
        textView.text = newTextViewText
      }
    }
  }
}