mm

Assets/trCRM/upgradeRes4Dev/priority/lua/db/DBTextures.lua

@@ -3,6 +3,9 @@ local db = {}
 
 local dbUploadStatus = {}
 local isUploading = {}
+local isDownoading = {}
+local downloadCallback = {}
+local downloadDir = Utl.chgToSDCard(Path.Combine(Application.persistentDataPath, CLPathCfg.self.basePath, "download"))
 
 function DBTextures.init()
     InvokeEx.cancelInvoke(DBTextures.releaseTimeout)
@@ -99,4 +102,66 @@ function DBTextures.cancelUpload(path, uploadPath)
     end
 end
 
+function DBTextures.hadDownloaded(name)
+    local localPath = Path.Combine(downloadDir, name)
+    if File.Exists(localPath) then
+        return true, localPath
+    end
+    return false, localPath
+end
+
+function DBTextures.download(name, url, callback)
+    downloadCallback[name] = callback
+    if isDownoading[name] then
+        return isDownoading[name]
+    end
+    local localPath = Path.Combine(downloadDir, name)
+    local _url = url
+    if File.Exists(localPath) then
+        _url = Path.Combine("file://", localPath)
+    end
+    local assetType
+    if MyUtl.isImage(name) then
+        assetType = CLAssetType.texture
+    else
+        assetType = CLAssetType.bytes
+    end
+
+    local www =
+        WWWEx.get(
+        _url,
+        nil,
+        CLAssetType.texture,
+        function(content, orgs)
+            isDownoading[name] = nil
+            if content then
+                local bytes
+                if assetType == CLAssetType.texture then
+                    bytes = content:GetRawTextureData()
+                else
+                    bytes = content
+                end
+                Directory.CreateDirectory(Path.GetDirectoryName(localPath))
+                File.WriteAllBytes(localPath, bytes)
+                Utl.doCallback(downloadCallback[name], content, localPath)
+                downloadCallback[name] = nil
+            else
+                MyUtl.toastW("下载附件为空")
+                Utl.doCallback(downloadCallback[name], content, nil)
+                downloadCallback[name] = nil
+            end
+        end,
+        function()
+            isDownoading[name] = nil
+            MyUtl.toastW("下载附件失败")
+            Utl.doCallback(downloadCallback[name], nil, nil)
+            downloadCallback[name] = nil
+        end,
+        nil,
+        true,
+        2
+    )
+    isDownoading[name] = www
+end
+
 return DBTextures