up

app/src/main/java/io/legado/app/ui/main/MainActivity.kt

@@ -13,7 +13,6 @@ import io.legado.app.BuildConfig
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.constant.Bus
-import io.legado.app.help.ActivityHelp
 import io.legado.app.help.storage.Backup
 import io.legado.app.lib.theme.ATH
 import io.legado.app.service.BaseReadAloudService
@@ -113,14 +112,10 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
     }
 
     override fun finish() {
-        if (ActivityHelp.size() > 1) {
-            moveTaskToBack(true)
-        } else {
-            if (!BuildConfig.DEBUG) {
-                Backup.autoBackup()
-            }
-            super.finish()
+        if (!BuildConfig.DEBUG) {
+            Backup.autoBackup()
         }
+        super.finish()
     }
 
     override fun onDestroy() {

app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt

@@ -2,6 +2,7 @@ package io.legado.app.ui.rss.read
 
 import android.annotation.SuppressLint
 import android.os.Bundle
+import android.view.KeyEvent
 import android.view.Menu
 import android.view.MenuItem
 import android.webkit.WebSettings
@@ -90,4 +91,18 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
         }
         DrawableUtils.setTint(starMenuItem?.icon, primaryTextColor)
     }
+
+    override fun onKeyUp(keyCode: Int, event: KeyEvent?): Boolean {
+        event?.let {
+            when (keyCode) {
+                KeyEvent.KEYCODE_BACK -> if (event.isTracking && !event.isCanceled && webView.canGoBack()) {
+                    if (webView.copyBackForwardList().size > 1) {
+                        webView.goBack()
+                        return true
+                    }
+                }
+            }
+        }
+        return super.onKeyUp(keyCode, event)
+    }
 }