Merge pull request #1516 from Xwite/master

fix:卷正文标题重复

app/src/main/java/io/legado/app/model/webBook/WebBook.kt

@@ -262,9 +262,8 @@ object WebBook {
             return bookChapter.url
         }
         if(bookChapter.isVolume && bookChapter.url == bookChapter.title) {
-            //不返回空值，是为了过书源检测
-            Debug.log(bookSource.bookSourceUrl, "⇒一级目录正文,使用章节标题:${bookChapter.title}")
-            return bookChapter.title
+            Debug.log(bookSource.bookSourceUrl, "⇒一级目录获取链接为空，正文返回空白")
+            return ""
         }
         return if (bookChapter.url == book.bookUrl && !book.tocHtml.isNullOrEmpty()) {
             BookContent.analyzeContent(

app/src/main/java/io/legado/app/service/CheckSourceService.kt

@@ -144,7 +144,7 @@ class CheckSourceService : BaseService() {
                 nextChapterUrl = nextChapterUrl,
                 needSave = false
             )
-            if (content.isBlank()) {
+            if ( !toc.first().isVolume && content.isBlank()) {
                 throw NoStackTraceException("正文内容为空")
             }
         }.timeout(180000L)

app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt

@@ -332,7 +332,7 @@ object ChapterProvider {
                 }
                 lineIndex == layout.lineCount - 1 -> {
                     //最后一行
-                    textLine.text = if(isVolumeTitle) "" else "$words\n"
+                    textLine.text = "$words\n"
                     isLastLine = true
                     //标题居中
                     val startX = if (isTitle && ReadBookConfig.titleMode == 1 || isVolumeTitle)
@@ -349,7 +349,7 @@ object ChapterProvider {
                 }
                 else -> {
                     //中间行
-                    textLine.text = if(isVolumeTitle) "" else words
+                    textLine.text = words
                     addCharsToLineMiddle(
                         absStartX,
                         textLine,