优化图片下载

app/src/main/java/io/legado/app/help/BookHelp.kt

@@ -96,6 +96,7 @@ object BookHelp {
         }
         downloadImages.add(src)
         val analyzeUrl = AnalyzeUrl(src)
+        try {
             analyzeUrl.getImageBytes(book.origin)?.let {
                 FileUtils.createFileIfNotExist(
                     downloadDir,
@@ -105,8 +106,12 @@ object BookHelp {
                     "${MD5Utils.md5Encode16(src)}${getImageSuffix(src)}"
                 ).writeBytes(it)
             }
+        } catch (e: Exception) {
+            e.printStackTrace()
+        } finally {
             downloadImages.remove(src)
         }
+    }
 
     fun getImage(book: Book, src: String): File {
         return FileUtils.getFile(