diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..61a9130
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="1.8" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index ac6b0ae..23a89bb 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -15,6 +15,7 @@
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
+        <option name="useQualifiedModuleNames" value="true" />
       </GradleProjectSettings>
     </option>
   </component>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 37a7509..d5d35ec 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index 2d8cc71..616ba4b 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,8 +11,8 @@ android {
         applicationId "top.fumiama.copymanga"
         minSdkVersion 23
         targetSdkVersion 30
-        versionCode 1
-        versionName "1.0"
+        versionCode 2
+        versionName '1.1'
         resConfigs "zh", "zh-rCN"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
diff --git a/app/src/main/java/top/fumiama/copymanga/activity/DlActivity.kt b/app/src/main/java/top/fumiama/copymanga/activity/DlActivity.kt
index 65d47b4..739b17f 100644
--- a/app/src/main/java/top/fumiama/copymanga/activity/DlActivity.kt
+++ b/app/src/main/java/top/fumiama/copymanga/activity/DlActivity.kt
@@ -45,7 +45,7 @@ class DlActivity : Activity() {
     private var cdwnHeight = 0
     private var canDl = false
     private lateinit var toolsBox: ToolsBox
-    val mangaDlTools = MangaDlTools()
+    lateinit var mangaDlTools: MangaDlTools
 
 
     @ExperimentalStdlibApi
@@ -54,6 +54,7 @@ class DlActivity : Activity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_dl)
         mh?.saveUrlsOnly = true
+        mangaDlTools = MangaDlTools(this)
         handler.sendEmptyMessage(-2)
     }
 
diff --git a/app/src/main/java/top/fumiama/copymanga/activity/ViewMangaActivity.kt b/app/src/main/java/top/fumiama/copymanga/activity/ViewMangaActivity.kt
index 23921c6..47571ee 100644
--- a/app/src/main/java/top/fumiama/copymanga/activity/ViewMangaActivity.kt
+++ b/app/src/main/java/top/fumiama/copymanga/activity/ViewMangaActivity.kt
@@ -116,11 +116,9 @@ class ViewMangaActivity : Activity() {
     }
 
     private fun loadOneImg() {
-        Glide.with(this@ViewMangaActivity.applicationContext).load(
+        Glide.with(this@ViewMangaActivity).load(
             imgUrls[currentItem]
-        ).thumbnail(
-            Glide.with(this@ViewMangaActivity.applicationContext).load(R.drawable.bg_comment)
-        ).into(onei)
+        ).placeholder(R.drawable.bg_comment).into(onei)
         updateSeekBar()
     }
 
@@ -145,7 +143,7 @@ class ViewMangaActivity : Activity() {
         idtblr.setOnClickListener {
             if (idtblr.isChecked) p["r2l"] = "true"
             else p["r2l"] = "false"
-            Toast.makeText(this.applicationContext, "下次浏览生效", Toast.LENGTH_SHORT).show()
+            Toast.makeText(this, "下次浏览生效", Toast.LENGTH_SHORT).show()
         }
     }
 
@@ -153,7 +151,7 @@ class ViewMangaActivity : Activity() {
         idtbvp.setOnClickListener {
             if (idtbvp.isChecked) p["noAnimation"] = "true"
             else p["noAnimation"] = "false"
-            Toast.makeText(this.applicationContext, "下次浏览生效", Toast.LENGTH_SHORT).show()
+            Toast.makeText(this, "下次浏览生效", Toast.LENGTH_SHORT).show()
         }
     }
 
@@ -230,7 +228,7 @@ class ViewMangaActivity : Activity() {
             if (idtbfullscreen.isChecked) p["useFullScreen"] =
                 "true"
             else p["useFullScreen"] = "false"
-            Toast.makeText(this.applicationContext, "下次浏览生效", Toast.LENGTH_SHORT).show()
+            Toast.makeText(this, "下次浏览生效", Toast.LENGTH_SHORT).show()
         }
     }
 
@@ -279,12 +277,7 @@ class ViewMangaActivity : Activity() {
             @SuppressLint("ClickableViewAccessibility", "SetTextI18n")
             override fun onBindViewHolder(holder: ViewData, position: Int) {
                 val pos = if (r2l) count - position - 1 else position
-                Glide.with(this@ViewMangaActivity.applicationContext).load(
-                    imgUrls[pos]
-                ).thumbnail(
-                    Glide.with(this@ViewMangaActivity.applicationContext)
-                        .load(R.drawable.bg_comment)
-                ).into(holder.itemView.onei)
+                Glide.with(this@ViewMangaActivity).load(imgUrls[pos]).placeholder(R.drawable.bg_comment).into(holder.itemView.onei)
             }
 
             override fun getItemCount(): Int {
diff --git a/app/src/main/java/top/fumiama/copymanga/tool/MangaDlTools.kt b/app/src/main/java/top/fumiama/copymanga/tool/MangaDlTools.kt
index 3dca357..217b642 100644
--- a/app/src/main/java/top/fumiama/copymanga/tool/MangaDlTools.kt
+++ b/app/src/main/java/top/fumiama/copymanga/tool/MangaDlTools.kt
@@ -1,7 +1,7 @@
 package top.fumiama.copymanga.tool
 
 import top.fumiama.copymanga.R
-import top.fumiama.copymanga.activity.MainActivity.Companion.wm
+import top.fumiama.copymanga.activity.DlActivity
 import top.fumiama.copymanga.data.ComicStructure
 import top.fumiama.copymanga.view.JSWebView
 import top.fumiama.copymanga.web.JSHidden
@@ -12,14 +12,16 @@ import java.util.zip.CheckedOutputStream
 import java.util.zip.ZipEntry
 import java.util.zip.ZipOutputStream
 
-class MangaDlTools {
+class MangaDlTools(activity: DlActivity) {
     var exit = false
-    private val p = PropertiesTools(File("${wm?.get()?.filesDir}/chapters.hash"))
+    private val da = WeakReference(activity)
+    private val d = da.get()
+    private val p = PropertiesTools(File("${d?.filesDir}/chapters.hash"))
     private var imgUrlsList: Array<Array<String>?>? = null
     private var chaptersCount = 0
     private val newWebViewHidden: JSWebView?
         get() {
-            val re = wm?.get()?.let { JSWebView(it, it.getString(R.string.pc_ua)) }
+            val re = d?.let { JSWebView(it, it.getString(R.string.pc_ua)) }
             re?.setWebViewClient("h.js")
             re?.loadJSInterface(JSHidden())
             return re
diff --git a/build.gradle b/build.gradle
index 7026a3a..b4bf01a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:4.0.2"
+        classpath 'com.android.tools.build:gradle:4.1.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'com.tencent.mm:AndResGuard-gradle-plugin:1.2.19'
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index fda7a01..c0bf759 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Oct 12 18:40:51 CST 2020
+#Wed Oct 14 16:47:38 CST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip