Flutter實現仿微信分享功能的示例代碼
Flutter 用來快速開發 Android iOS平臺應用,在Flutter 中,通過 fluwx或者fluwx_no_pay 插件來實現微信分享功能
主要還是看自己的需求,本示例我將按照沒有支付的實現。至於為什麼,主要是ios打包提審比較麻煩。
那麼接下來就看一下如何實現吧,
1.首先去pub官網
https://pub.flutter-io.cn/
查找這兩個包
fluwx_no_pay
或者
fluwx
安裝方式有兩種:
方法一:
flutter pub add fluwx_no_pay
方法二:
dependencies: fluwx_no_pay: ^3.6.1+5
然後在使用的時候導入
import 'package:fluwx_no_pay/fluwx_no_pay.dart';
雖然它集成的功能很多
但是我們隻做分享的演示
2 在微信開放平臺註冊開發者賬號以及創建你的應用程序
微信開放平臺鏈接
開發平臺文檔
創建應用填寫基本的應用信息後,提交微信平臺審核,審核通過後
從這裡拿到 AppID ,然後再將配置的 iOS 平臺的 Universal Links 拿過來,至於如何獲取,請查看相關資料。
3 在分享頁面
3.1 初始化
@override void initState() { super.initState(); _initFluwx(); } Future _initFluwx() async { await WxSdk.init(); }
3.2 檢測微信是否安裝
如點擊按鈕時進行分享,分享前檢查一下
bool _wxIsInstalled = false; void _checkWx() async { _wxIsInstalled = await WxSdk.wxIsInstalled(); refreshUI(); }
3.3 分享微信消息
String imagePath; imagePath = await LocalImageCache.instance .download(context, widget.cjinfo.cover, ext: ".jpg"); //壓縮圖片,我這兒用的flutter_image_compress Uint8List image = await FlutterImageCompress.compressWithFile( imagePath, minHeight: 128, minWidth: 128, quality: 20, // rotate: 135, ); WxSdk.ShareUrl( //分享鏈接 "你的鏈接", scene: 1, thumbFile: imagePath, desc: "描述", title: "標題", );
封裝的工具類
import 'dart:io'; import 'dart:typed_data'; import 'check.dart'; import 'package:fluwx_no_pay/fluwx_no_pay.dart' as fluwx; class WxSdk { // static bool wxIsInstalled; static Future init() async { fluwx.registerWxApi( appId: "你的appid", doOnAndroid: true, doOnIOS: true, universalLink: "你的universalLink"); } static Future<bool> wxIsInstalled() async { return await fluwx.isWeChatInstalled; } /** * 分享圖片到微信, * file=本地路徑 * url=網絡地址 * asset=內置在app的資源圖片 * scene=分享場景,1好友會話,2朋友圈,3收藏 */ static void ShareImage( {String title, String decs, String file, String url, String asset, int scene = 1}) async { fluwx.WeChatScene wxScene = fluwx.WeChatScene.SESSION; if (scene == 2) { wxScene = fluwx.WeChatScene.TIMELINE; } else if (scene == 3) { wxScene = fluwx.WeChatScene.FAVORITE; } fluwx.WeChatShareImageModel model = null; if (file != null) { model = fluwx.WeChatShareImageModel(fluwx.WeChatImage.file(File(file)), title: title, description: decs, scene: wxScene); } else if (url != null) { model = fluwx.WeChatShareImageModel(fluwx.WeChatImage.network(url), title: title, description: decs, scene: wxScene); } else if (asset != null) { model = fluwx.WeChatShareImageModel(fluwx.WeChatImage.asset(asset), title: title, description: decs, scene: wxScene); } else { throw Exception("缺少圖片資源信息"); } fluwx.shareToWeChat(model); } /** * 分享文本 * content=分享內容 * scene=分享場景,1好友會話,2朋友圈,3收藏 */ static void ShareText(String content, {String title, int scene = 1}) { fluwx.WeChatScene wxScene = fluwx.WeChatScene.SESSION; if (scene == 2) { wxScene = fluwx.WeChatScene.TIMELINE; } else if (scene == 3) { wxScene = fluwx.WeChatScene.FAVORITE; } fluwx.WeChatShareTextModel model = fluwx.WeChatShareTextModel(content, title: title, scene: wxScene); fluwx.shareToWeChat(model); } /*** * 分享視頻 * videoUrl=視頻網上地址 * thumbFile=縮略圖本地路徑 * scene=分享場景,1好友會話,2朋友圈,3收藏 */ static void ShareVideo(String videoUrl, {String thumbFile, String title, String desc, int scene = 1}) { fluwx.WeChatScene wxScene = fluwx.WeChatScene.SESSION; if (scene == 2) { wxScene = fluwx.WeChatScene.TIMELINE; } else if (scene == 3) { wxScene = fluwx.WeChatScene.FAVORITE; } fluwx.WeChatImage image = null; if (thumbFile != null) { image = fluwx.WeChatImage.file(File(thumbFile)); } var model = fluwx.WeChatShareVideoModel( videoUrl: videoUrl, thumbnail: image, title: title, description: desc, scene: wxScene); fluwx.shareToWeChat(model); } /** * 分享鏈接 * url=鏈接 * thumbFile=縮略圖本地路徑 * scene=分享場景,1好友會話,2朋友圈,3收藏 */ static void ShareUrl(String url, {String thumbFile, Uint8List thumbBytes, String title, String desc, int scene = 1, String networkThumb, String assetThumb}) { desc = desc ?? ""; title = title ?? ""; if (desc.length > 54) { desc = desc.substring(0, 54) + "..."; } if (title.length > 20) { title = title.substring(0, 20) + "..."; } fluwx.WeChatScene wxScene = fluwx.WeChatScene.SESSION; if (scene == 2) { wxScene = fluwx.WeChatScene.TIMELINE; } else if (scene == 3) { wxScene = fluwx.WeChatScene.FAVORITE; } fluwx.WeChatImage image = null; if (thumbFile != null) { image = fluwx.WeChatImage.file(File(thumbFile)); } else if (thumbBytes != null) { image = fluwx.WeChatImage.binary(thumbBytes); } else if (strNoEmpty(networkThumb)) { image = fluwx.WeChatImage.network(Uri.encodeFull(networkThumb)); } else if (strNoEmpty(assetThumb)) { image = fluwx.WeChatImage.asset(assetThumb, suffix: ".png"); } var model = fluwx.WeChatShareWebPageModel( url, thumbnail: image, title: title, description: desc, scene: wxScene, ); fluwx.shareToWeChat(model); } }
check.dart
/// 字符串不為空 bool strNoEmpty(String value) { if (value == null) return false; return value.trim().isNotEmpty; } /// 字符串不為空 bool mapNoEmpty(Map value) { if (value == null) return false; return value.isNotEmpty; } ///判斷List是否為空 bool listNoEmpty(List list) { if (list == null) return false; if (list.length == 0) return false; return true; }
//下載圖片
import 'dart:convert'; import 'dart:io'; import 'dart:typed_data'; import 'package:dio/dio.dart'; import 'package:flutter/cupertino.dart'; import 'package:path_provider/path_provider.dart'; class LocalImageCache { static LocalImageCache instance = LocalImageCache(); String _tmepPath = ""; void init() async { var tempDir = await getTemporaryDirectory(); _tmepPath = tempDir.path; } /** * 直接下載圖片到本地臨時目錄 * ios必須帶有後綴,不然exists會永遠=false */ Future<String> download(BuildContext context, String url,{String ext = ""}) async { try { var dio = await Dio() .get(url, options: Options(responseType: ResponseType.bytes)); Uint8List image = Uint8List.fromList(dio.data); return save(image, url,ext: ext); } catch (ex) { print("image download error:${ex.toString()}"); return null; } } }
總結
本文設計到的知識點有
- 如何進行微信分享
- 如何利用dio將圖片下載到本地
- 如何利用flutter_image_compress壓縮圖片
主要問題
未安裝微信
ios未配置白名單
圖片太大瞭(所以我用瞭壓縮技術)32k
開發平臺文檔
以上就是一些在接入微信分享過程中遇到的一些問題。
到此這篇關於Flutter實現仿微信分享功能的示例代碼的文章就介紹到這瞭,更多相關Flutter仿微信分享功能內容請搜索WalkonNet以前的文章或繼續瀏覽下面的相關文章希望大傢以後多多支持WalkonNet!
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