优化

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

@@ -123,7 +123,7 @@ class BackupConfigFragment : BasePreferenceFragment(),
         upPreferenceSummary(PreferKey.webDavPassword, getPrefString(PreferKey.webDavPassword))
         upPreferenceSummary(PreferKey.backupPath, getPrefString(PreferKey.backupPath))
         findPreference<io.legado.app.ui.widget.prefs.Preference>("web_dav_restore")
-            ?.onLongClick = { restoreDir.launch() }
+            ?.onLongClick { restoreDir.launch(); true }
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {

app/src/main/java/io/legado/app/ui/widget/prefs/Preference.kt

@@ -23,7 +23,7 @@ import kotlin.math.roundToInt
 class Preference(context: Context, attrs: AttributeSet) :
     androidx.preference.Preference(context, attrs) {
 
-    var onLongClick: (() -> Unit)? = null
+    private var onLongClick: ((preference: Preference) -> Boolean)? = null
     private val isBottomBackground: Boolean
 
     init {
@@ -117,8 +117,12 @@ class Preference(context: Context, attrs: AttributeSet) :
         )
         super.onBindViewHolder(holder)
         holder.itemView.onLongClick {
-            onLongClick?.invoke()
+            onLongClick?.invoke(this)
         }
     }
 
+    fun onLongClick(listener: (preference: Preference) -> Boolean) {
+        onLongClick = listener
+    }
+
 }