up

app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt

@@ -238,7 +238,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_rea
     override fun loadContentFinish(bookChapter: BookChapter, content: String) {
         launch {
             val textChapter = ChapterProvider.getTextChapter(content_text_view, bookChapter, content)
-            content_text_view.text = textChapter.pages[0].text
+            content_text_view.text = textChapter.pages[0].stringBuilder
         }
     }
 

app/src/main/java/io/legado/app/ui/widget/page/ChapterProvider.kt

@@ -1,5 +1,8 @@
 package io.legado.app.ui.widget.page
 
+import android.text.Spannable
+import android.text.SpannableStringBuilder
+import android.text.style.RelativeSizeSpan
 import io.legado.app.data.entities.BookChapter
 
 
@@ -11,8 +14,18 @@ object ChapterProvider {
         var surplusText = content
         var pageIndex = 0
         while (surplusText.isNotEmpty()) {
-            textView.text = surplusText
+            val spannableStringBuilder = SpannableStringBuilder(surplusText)
-            textPages.add(TextPage(pageIndex, surplusText.substring(0, textView.getCharNum())))
+            if (pageIndex == 0) {
+                val span = RelativeSizeSpan(1.5f)
+                spannableStringBuilder.setSpan(span, 0, surplusText.indexOf("\n"), Spannable.SPAN_INCLUSIVE_EXCLUSIVE)
+            }
+            textView.text = spannableStringBuilder
+            textPages.add(
+                TextPage(
+                    pageIndex,
+                    spannableStringBuilder.delete(textView.getCharNum(), spannableStringBuilder.length)
+                )
+            )
             surplusText = surplusText.substring(textView.getCharNum())
             pageIndex++
         }

app/src/main/java/io/legado/app/ui/widget/page/TextPage.kt

@@ -1,3 +1,5 @@
 package io.legado.app.ui.widget.page
 
-data class TextPage(val index: Int, val text: String)
+import android.text.SpannableStringBuilder
+
+data class TextPage(val index: Int, val stringBuilder: SpannableStringBuilder)

app/src/main/java/io/legado/app/ui/widget/page/TextPageFactory.kt

@@ -1,5 +1,7 @@
 package io.legado.app.ui.widget.page
 
+import android.text.SpannableStringBuilder
+
 class TextPageFactory private constructor(dataSource: DataSource) : PageFactory<TextPage>(dataSource) {
 
     companion object{
@@ -15,11 +17,11 @@ class TextPageFactory private constructor(dataSource: DataSource) : PageFactory<
     }
 
     override fun nextPage(): TextPage {
-        return TextPage(index.plus(1), "index：$index")
+        return TextPage(index.plus(1), SpannableStringBuilder("index：$index"))
     }
 
     override fun previousPage(): TextPage {
-        return TextPage(index.minus(1), "index：$index")
+        return TextPage(index.minus(1), SpannableStringBuilder("index：$index"))
     }