wpf image控件循環顯示圖片 以達到動畫效果 問題及解決方案

1>最初方案:

用wpf的image控件循環顯示圖片,達到動畫效果,其實就是在後臺代碼動態改變Image.Source的值,關鍵代碼:

        　　for (int i = 1; i < 601; i++)//六百張圖片
            {
                BitmapImage bmImg = new BitmapImage(new Uri(AppDomain.CurrentDomain.BaseDirectory + i.ToString() + ".png"));
                bmImg.CacheOption = BitmapCacheOption.None;
                vimage..Source=bmImg.Clone();
                System.Threading.Thread.Sleep(40);//每秒25幀
            }

因爲Image.Source切換BitmapImage後,仍然抓着舊的bmImg不放,致使內存溢出.再多的內存也不夠用.

在網上也找了你們說的方案都不行.只能尋找其餘方案.

2>最終方案:

思路:a>先把全部要加載的圖片轉換成二進制數組,再把數組緩存到List中;

       b>循環List,把二進制圖片轉換成MemoryStream;

       c>把MemoryStream,經過ImageSourceConverter.ConvertFrom() as BitmapFrame,進行轉換.

優勢:先把圖片緩存成二進制,這樣能夠釋放對圖片文件資源的佔用,後面代碼執行效率高;用經過MemoryStream生成的Source,用完就被釋放了[暫時解釋不了]!

核心代碼:

           imageSourceConverter = new ImageSourceConverter();
           byList = new List<byte[]>();
           for (int i = 1; i < 601; i++)
           {
               using (BinaryReader binReader = new BinaryReader(File.Open(AppDomain.CurrentDomain.BaseDirectory + i.ToString() + ".png", FileMode.Open)))
               {
                   FileInfo fileInfo = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + i.ToString() + ".png");
                   //byte[] bytes = binReader.ReadBytes((int)fileInfo.Length);
                   //byList.Add(bytes);

                   if ((long)int.MaxValue > fileInfo.Length)
                   {
                       byte[] bytes = binReader.ReadBytes((int)fileInfo.Length);
                       byList.Add(bytes);
                   }
                   else
                   {
                       int leng = 1024;
                       byte[] bytes = new byte[fileInfo.Length];
                       for (long j = 0; j < (fileInfo.Length / (long)leng + (long)1); j++)
                       {
                           byte[] b = binReader.ReadBytes(leng);
                           if (b == null || b.Length < 1)
                           {
                               break;
                           }
                           for (long jj = j * leng; jj < (j + 1) * leng; jj++)
                           {
                               bytes[jj] = b[jj % leng];
                           }
                       }
                       byList.Add(bytes);
                   }
               }
           }

            // // //////////////
           for (int i = 0; i < byList.Count; i++)
           {
               MemoryStream stream = new MemoryStream(byList[i]);
               vimage.Source = imageSourceConverter.ConvertFrom(stream) as BitmapFrame;
               System.Threading.Thread.Sleep(40);
           }

 

 真誠期待你們指導...