feat: 优化代码

app/src/main/java/io/legado/app/service/help/ReadBook.kt

@@ -17,6 +17,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import org.jetbrains.anko.toast
 
 
 object ReadBook {
@@ -283,6 +284,9 @@ object ReadBook {
                     }
                 }
             }
+        }.onError {
+            it.printStackTrace()
+            App.INSTANCE.toast(it.localizedMessage ?: "ChapterProvider ERROR")
         }
     }
 

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

@@ -257,22 +257,24 @@ object ChapterProvider {
             if (lineIndex == 0 && layout.lineCount > 1) {
                 //第一行
                 var x = 0f
-                val icw = StaticLayout.getDesiredWidth(bodyIndent, contentPaint)
-                var x1 = x + icw
+                val icw = StaticLayout.getDesiredWidth(bodyIndent, contentPaint) / bodyIndent.length
+                for (i in 0..bodyIndent.lastIndex) {
+                    val x1 = x + icw
                     val textChar = TextChar(
-                    charData = bodyIndent,
+                        charData = bodyIndent[i].toString(),
                         leftBottomPosition = TextPoint(paddingLeft + x, textLine.lineBottom),
                         rightTopPosition = TextPoint(paddingLeft + x1, textLine.lineTop)
                     )
                     textLine.textChars.add(textChar)
                     x = x1
+                }
                 words = words.replaceFirst(bodyIndent, "")
                 val gapCount: Int = words.length - 1
                 val d = (visibleWidth - desiredWidth) / gapCount
                 for (i in words.indices) {
                     val char = words[i].toString()
                     val cw = StaticLayout.getDesiredWidth(char, contentPaint)
-                    x1 = if (i != words.lastIndex) x + cw + d else x + cw
+                    val x1 = if (i != words.lastIndex) x + cw + d else x + cw
                     val textChar1 = TextChar(
                         charData = char,
                         leftBottomPosition = TextPoint(paddingLeft + x, textLine.lineBottom),

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

@@ -207,12 +207,12 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
                     if (lineIndex == selectLineStart && lineIndex == selectLineEnd) {
                         stringBuilder.append(
                             it.textLines[lineIndex].text.substring(
-                                selectCharStart + 1,
-                                selectCharEnd + 2
+                                selectCharStart,
+                                selectCharEnd + 1
                             )
                         )
                     } else if (lineIndex == selectLineStart) {
-                        stringBuilder.append(it.textLines[lineIndex].text.substring(selectCharStart + 1))
+                        stringBuilder.append(it.textLines[lineIndex].text.substring(selectCharStart))
                     } else if (lineIndex == selectLineEnd) {
                         stringBuilder.append(
                             it.textLines[lineIndex].text.substring(0, selectCharEnd + 1)