[Fix Skin]

1、修复皮肤包多次下载同一个皮肤导致md5不一样问题

libraries/mogo-skin/src/main/java/com/mogo/skin/SkinManager.java

@@ -31,6 +31,11 @@ public class SkinManager extends Observable {
     private static Application mApplication;
     private static SkinManager instance;
 
+    /**
+     * 下载器
+     */
+    private static DownloadManager mDownloadManager;
+
     /**
      * 皮肤加载回调监听
      */
@@ -159,7 +164,7 @@ public class SkinManager extends Observable {
         // 获取皮肤插件文件对象
         File skinFile = skin.getSkinFile(theme);
         // 判断是否存在
-        if (FileUtils.fileIsExists(theme, skin.getSkinFileName())) {
+        if (FileUtils.fileIsExists(theme, skin.getSkinFileName()) && mDownloadManager == null) {
             // 检验皮肤包完整性，即MD5是否一致，不一致则删除
             String localSkinFileMd5 = SkinUtils.getSkinMD5(skinFile);
             if (!TextUtils.equals(localSkinFileMd5, skin.md5)) {
@@ -172,10 +177,13 @@ public class SkinManager extends Observable {
             }
         }
         Log.w(TAG, "皮肤不存在,开始下载……skin=" + skin);
-        DownloadManager manager = getDownloadManager(skin, theme, skinLoadListener);
-        // 启动文件下载
-        manager.startDownload();
-
+        if (mDownloadManager == null) {
+            mDownloadManager = getDownloadManager(skin, theme, skinLoadListener);
+            // 启动文件下载
+            mDownloadManager.startDownload();
+        } else {
+            Log.e(TAG, "当前有皮肤包下载任务进行中，不可重复提交！");
+        }
     }
 
     private static DownloadManager getDownloadManager(Skin skin, File themeDirectory, SkinLoadListener skinLoadListener) {
@@ -217,6 +225,7 @@ public class SkinManager extends Observable {
                     skinLoadListener.onLoadFailed(e);
                     e.printStackTrace();
                 }
+                mDownloadManager = null;
             }
 
             @Override
@@ -224,6 +233,7 @@ public class SkinManager extends Observable {
                 // 下载失败后的处理
                 Log.e(TAG, "皮肤包下载出错 onDownloadFailed");
                 skinLoadListener.onLoadFailed(e);
+                mDownloadManager = null;
                 e.printStackTrace();
             }
 
@@ -231,6 +241,7 @@ public class SkinManager extends Observable {
             public void onAlreadyDownloading(String url) {
                 // 处理重复下载的情况
                 Log.w(TAG, "皮肤包 onAlreadyDownloading url=" + url);
+                mDownloadManager = null;
                 skinLoadListener.onLoadFailed(new Exception("DownloadManager onAlreadyDownloading url=" + url));
             }
         };