flutter 选取照片，选取视频，拍摄照片，拍照视频，保存或者缓存视频和照片

插件

//保存插件
image_gallery_saver
//文件路径插件
path_provider
//打开相册插件
image_picker

选取照片

  Future getImage() async {
    final pickedFile = await picker.pickImage(source: ImageSource.gallery);

    print("pickedFile : ${pickedFile?.path}");
    setState(() {
      if (pickedFile != null) {
        _image = File(pickedFile.path);
        print("_image : ${_image}");
      } else {
        print('No image selected.');
      }
    });
    return pickedFile?.path;
  }

选取视频

Future _getVideo() async {
    File? videoFile;
    final pickedFile = await picker.pickVideo(
        source: ImageSource.gallery, maxDuration: const Duration(seconds: 60));

    setState(() {
      if (pickedFile != null) {
        videoFile = File(pickedFile.path);
        print("_image : ${_image}");
      } else {
        print('No image selected.');
      }
    });
    return videoFile;
  }

拍摄照片

  _takePhoto() async {
    final pickedFile =
        await picker.pickImage(source: ImageSource.camera, imageQuality: 50);

    print("pickedFile : ${pickedFile?.path}");

    setState(() {
      if (pickedFile != null) {
        _image = File(pickedFile.path);
        print("_image : $_image");
        print(pickedFile);
      } else {
        print('No image selected.');
      }
    });
  }

拍照视频

 Future _takeVideo() async {
    File? videoFile;
    final pickedFile = await picker.pickVideo(
        source: ImageSource.gallery, maxDuration: const Duration(seconds: 60));

    setState(() {
      if (pickedFile != null) {
        videoFile = File(pickedFile.path);
        print("_image : ${_image}");
      } else {
        print('No image selected.');
      }
    });
  }

保存和缓存 图片，视频

class SaveVideo{

  //网络照片保存
  static getHttp( String url,{bool isShow = true}) async {
    EasyLoading.show(
        maskType: EasyLoadingMaskType.black);
    var response = await Dio().get(
        url ,options: Options(responseType: ResponseType.bytes));
    // print("response.data:${response.data}");
    // print("response:${response}");
    final result = await ImageGallerySaver.saveImage(
      Uint8List.fromList(response.data),
      quality: 60,
      isReturnImagePathOfIOS: true,
    );
    print("result:$result");
    if(isShow){
      if (result["isSuccess"]) {
//这里是国际化提示代码，去掉.tr就行，后面带.tr的都是一个道理
        EasyLoading.showSuccess("save_successfully".tr);

      } else {
        EasyLoading.showError("fail_to_save".tr);
      }
    }

    return result["filePath"].toString().substring(8);

或者
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
    /// 保存的图片数据.   缓存数据到临时路径，这里也可以缓存视频
    Uint8List imageBytes;
    CachedNetworkImage image = CachedNetworkImage(imageUrl: url);
    BaseCacheManager manager = image.cacheManager ?? DefaultCacheManager();
    Map, String>? headers = image.httpHeaders;
    File file = await manager.getSingleFile(
      image.imageUrl,
    );
    imageBytes = await file.readAsBytes();
    /// 保存图片
    final results = await ImageGallerySaver.saveImage(imageBytes);



  }

# 視頻保存

  static saveVideo(BuildContext context,String videoUrl,{bool isShow = true}) async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    EasyLoading.show(
        maskType: EasyLoadingMaskType.black);
    if(isShow){
      ///保存
      EasyLoading.show(
          maskType: EasyLoadingMaskType.black);
      var appDocDir = await getTemporaryDirectory();
      String savePath =
          "${appDocDir.path}+${const Uuid().v4()}/${DateTime.now().millisecondsSinceEpoch}.mp4";
      await Dio().download(videoUrl, savePath);
      final result = await ImageGallerySaver.saveFile(savePath);
      if (result["isSuccess"]) {
        EasyLoading.dismiss();
        int ? launchTimes = prefs.getInt("launchTimes");
        if(launchTimes == 2){
          Launch.launchShowCupertinoAlertDialogTwo(context);
        }
        else{
          EasyLoading.showSuccess("save_successfully".tr,);
        }
      } else {
        EasyLoading.showError("fail_to_save".tr);
      }
    }else
    {
      /// 保存的图片数据   分享使用
      CachedNetworkImage image = CachedNetworkImage(imageUrl: videoUrl);
      BaseCacheManager manager = image.cacheManager ?? DefaultCacheManager();
      File file = await manager.getSingleFile(
        image.imageUrl,
      );
      EasyLoading.dismiss();
      return file.path;
    }

  }