优化

app/src/main/java/io/legado/app/constant/PreferKey.kt

@@ -108,6 +108,7 @@ object PreferKey {
     const val welcomeShowTextDark = "welcomeShowTextDark"
     const val welcomeShowIcon = "welcomeShowIcon"
     const val welcomeShowIconDark = "welcomeShowIconDark"
+    const val pageTouchSlop = "pageTouchSlop"
 
     const val cPrimary = "colorPrimary"
     const val cAccent = "colorAccent"

app/src/main/java/io/legado/app/help/config/AppConfig.kt

@@ -321,6 +321,12 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
             appCtx.putPrefString("searchGroup", value)
         }
 
+    var pageTouchSlop: Int
+        get() = appCtx.getPrefInt(PreferKey.pageTouchSlop, 0)
+        set(value) {
+            appCtx.putPrefInt(PreferKey.pageTouchSlop, value)
+        }
+
     private fun getPrefUserAgent(): String {
         val ua = appCtx.getPrefString(PreferKey.userAgent)
         if (ua.isNullOrBlank()) {

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

@@ -53,6 +53,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
     val defaultAnimationSpeed = 300
     private var pressDown = false
     private var isMove = false
+    private var isPageMove = false
 
     //起始点
     var startX: Float = 0f
@@ -81,6 +82,13 @@ class ReadView(context: Context, attrs: AttributeSet) :
     private val initialTextPos = TextPos(0, 0, 0)
 
     val slopSquare by lazy { ViewConfiguration.get(context).scaledTouchSlop }
+    val pageSlopSquare by lazy {
+        if (AppConfig.pageTouchSlop == 0) {
+            slopSquare
+        } else {
+            AppConfig.pageTouchSlop
+        }
+    }
     private val tlRect = RectF()
     private val tcRect = RectF()
     private val trRect = RectF()
@@ -188,6 +196,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
                 postDelayed(longPressRunnable, longPressTimeout)
                 pressDown = true
                 isMove = false
+                isPageMove = false
                 pageDelegate?.onTouch(event)
                 pageDelegate?.onDown()
                 setStartPoint(event.x, event.y)
@@ -197,12 +206,16 @@ class ReadView(context: Context, attrs: AttributeSet) :
                     isMove =
                         abs(startX - event.x) > slopSquare || abs(startY - event.y) > slopSquare
                 }
+                if (!isPageMove) {
+                    isPageMove =
+                        abs(startX - event.x) > pageSlopSquare || abs(startY - event.y) > pageSlopSquare
+                }
                 if (isMove) {
                     longPressed = false
                     removeCallbacks(longPressRunnable)
                     if (isTextSelected) {
                         selectText(event.x, event.y)
-                    } else {
+                    } else if (isPageMove) {
                         pageDelegate?.onTouch(event)
                     }
                 }
@@ -212,7 +225,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
                 removeCallbacks(longPressRunnable)
                 if (!pressDown) return true
                 pressDown = false
-                if (!isMove) {
+                if (!isPageMove) {
                     if (!longPressed && !pressOnTextSelected) {
                         onSingleTapUp()
                         return true
@@ -220,7 +233,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
                 }
                 if (isTextSelected) {
                     callBack.showTextActionMenu()
-                } else if (isMove) {
+                } else if (isPageMove) {
                     pageDelegate?.onTouch(event)
                 }
                 pressOnTextSelected = false
@@ -231,7 +244,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
                 pressDown = false
                 if (isTextSelected) {
                     callBack.showTextActionMenu()
-                } else if (isMove) {
+                } else if (isPageMove) {
                     pageDelegate?.onTouch(event)
                 }
                 pressOnTextSelected = false

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

@@ -11,6 +11,7 @@ abstract class HorizontalPageDelegate(readView: ReadView) : PageDelegate(readVie
     protected var curBitmap: Bitmap? = null
     protected var prevBitmap: Bitmap? = null
     protected var nextBitmap: Bitmap? = null
+    protected val slopSquare by lazy { readView.slopSquare * readView.slopSquare }
 
     override fun setDirection(direction: PageDirection) {
         super.setDirection(direction)
@@ -71,7 +72,7 @@ abstract class HorizontalPageDelegate(readView: ReadView) : PageDelegate(readVie
             val deltaX = (focusX - startX).toInt()
             val deltaY = (focusY - startY).toInt()
             val distance = deltaX * deltaX + deltaY * deltaY
-            isMoved = distance > readView.slopSquare
+            isMoved = distance > slopSquare
             if (isMoved) {
                 if (sumX - startX > 0) {
                     //如果上一页不存在

app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt

@@ -6,6 +6,7 @@ import android.content.SharedPreferences
 import android.content.pm.PackageManager
 import android.os.Bundle
 import android.view.View
+import android.view.ViewConfiguration
 import androidx.core.view.postDelayed
 import androidx.fragment.app.activityViewModels
 import androidx.preference.ListPreference
@@ -42,6 +43,7 @@ class OtherConfigFragment : PreferenceFragment(),
             AppConfig.defaultBookTreeUri = treeUri.toString()
         }
     }
+    private val slopSquare by lazy { ViewConfiguration.get(context).scaledTouchSlop }
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         putPrefBoolean(PreferKey.processText, isProcessTextEnabled())
@@ -58,6 +60,7 @@ class OtherConfigFragment : PreferenceFragment(),
         }
         upPreferenceSummary(PreferKey.checkSource, CheckSource.summary)
         upPreferenceSummary(PreferKey.bitmapCacheSize, AppConfig.bitmapCacheSize.toString())
+        upPreferenceSummary(PreferKey.pageTouchSlop, slopSquare.toString())
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -117,6 +120,16 @@ class OtherConfigFragment : PreferenceFragment(),
                         ImageProvider.bitmapLruCache.resize(ImageProvider.cacheSize)
                     }
             }
+            PreferKey.pageTouchSlop -> {
+                NumberPickerDialog(requireContext())
+                    .setTitle(getString(R.string.page_touch_slop_dialog_title))
+                    .setMaxValue(9999)
+                    .setMinValue(0)
+                    .setValue(AppConfig.pageTouchSlop)
+                    .show {
+                        AppConfig.pageTouchSlop = it
+                    }
+            }
         }
         return super.onPreferenceTreeClick(preference)
     }
@@ -168,6 +181,7 @@ class OtherConfigFragment : PreferenceFragment(),
             PreferKey.threadCount -> preference.summary = getString(R.string.threads_num, value)
             PreferKey.webPort -> preference.summary = getString(R.string.web_port_summary, value)
             PreferKey.bitmapCacheSize -> preference.summary = getString(R.string.bitmap_cache_size_summary, value)
+            PreferKey.pageTouchSlop -> preference.summary = getString(R.string.page_touch_slop_summary, value)
             else -> if (preference is ListPreference) {
                 val index = preference.findIndexOfValue(value)
                 // Set the summary to reflect the new value.

app/src/main/res/values-es-rES/strings.xml

@@ -1003,4 +1003,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/values-ja-rJP/strings.xml

@@ -1006,4 +1006,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/values-pt-rBR/strings.xml

@@ -1006,4 +1006,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/values-zh-rHK/strings.xml

@@ -1003,4 +1003,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/values-zh-rTW/strings.xml

@@ -1005,4 +1005,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/values-zh/strings.xml

@@ -1005,4 +1005,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -1006,4 +1006,7 @@
     <string name="last_read_time_sort">阅读时间排序</string>
     <string name="reading_time_tag">阅读时长:</string>
     <string name="last_read_time_tag">最后阅读时间:</string>
+    <string name="page_touch_slop_title">滑动翻页阈值</string>
+    <string name="page_touch_slop_dialog_title">滑动翻页阈值（0 = 系统默认值）</string>
+    <string name="page_touch_slop_summary">滑动多长距离才会触发滑动翻页（系统默认值 %s px）</string>
 </resources>

app/src/main/res/xml/pref_config_other.xml

@@ -128,6 +128,12 @@
             android:title="@string/threads_num_title"
             app:iconSpaceReserved="false" />
 
+        <io.legado.app.lib.prefs.Preference
+            android:key="pageTouchSlop"
+            android:summary="@string/page_touch_slop_summary"
+            android:title="@string/page_touch_slop_title"
+            app:iconSpaceReserved="false" />
+
         <io.legado.app.lib.prefs.SwitchPreference
             android:defaultValue="true"
             android:key="process_text"