0510 添加视频文件下载并添加到相册的方法

lib/util/download/download.dart

@@ -35,7 +35,9 @@ class Download {
         String savePath = appDocDir.path +
             "/" +
             DateTime.now().toIso8601String().toString() +
-            (strs[strs.length - 1].length > 4 ? (postfix ?? "") : ('.' + strs[strs.length - 1]));
+            (strs[strs.length - 1].length > 4
+                ? (postfix ?? "")
+                : ('.' + strs[strs.length - 1]));
         await Dio().download(url, savePath, onReceiveProgress: (count, toal) {
           if (progress != null) {
             progress(count, toal);
@@ -57,4 +59,55 @@ class Download {
       return "请前往系统设置开启应用的内存读取权限再尝试";
     }
   }
+
+  Future<String> videoFileToGallery(
+    String url, {
+    String postfix,
+    Function(int, int) progress,
+  }) async {
+    // 检查是否已有读写内存的权限
+    bool status = await Permission.storage.isGranted;
+
+    //判断如果还没拥有读写权限就申请获取权限
+    if (status || await Permission.storage.request().isGranted) {
+      if (hashMap.containsKey(url)) {
+        return "正在下载";
+      } else {
+        hashMap[url] = false;
+      }
+      try {
+        var strs = url.split('.');
+        if (strs.length < 0) {
+          return "文件链接错误";
+        }
+        var appDocDir = await getTemporaryDirectory();
+        String savePath = appDocDir.path +
+            "/" +
+            DateTime.now().toIso8601String().toString() +
+            (strs[strs.length - 1].length > 4
+                ? (postfix ?? "")
+                : ('.' + strs[strs.length - 1]));
+        await Dio().download(url, savePath, onReceiveProgress: (count, toal) {
+          if (progress != null) {
+            progress(count, toal);
+          }
+        });
+        print(savePath);
+        //视屏文件插入到手机相册中的方法
+        var result = await SaveImage.saveFile(savePath);
+        // var result = await SaveImage.save(imageBytes: File(savePath).readAsBytesSync());
+        if (result != null && result) {
+          return "保存成功";
+        } else {
+          return "保存失败";
+        }
+      } catch (e) {
+        return "下载失败,原因:" + e.toString();
+      } finally {
+        hashMap.remove(url);
+      }
+    } else {
+      return "请前往系统设置开启应用的内存读取权限再尝试";
+    }
+  }
 }