feat: 优化代码

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

@@ -85,84 +85,86 @@ class IconListPreference(context: Context, attrs: AttributeSet) : ListPreference
         }
         return null
     }
-}
 
-class IconDialog : DialogFragment() {
-
-    var onChanged: ((value: String) -> Unit)? = null
-    var entries: Array<CharSequence>? = null
-    var entryValues: Array<CharSequence>? = null
-    var iconNames: Array<CharSequence>? = null
-
-    override fun onStart() {
-        super.onStart()
-        val dm = DisplayMetrics()
-        activity?.windowManager?.defaultDisplay?.getMetrics(dm)
-        dialog?.window?.setLayout(
-            (dm.widthPixels * 0.9).toInt(),
-            (dm.heightPixels * 0.9).toInt()
-        )
-    }
 
-    override fun onCreateView(
+    class IconDialog : DialogFragment() {
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View? {
-        return inflater.inflate(R.layout.dialog_recycler_view, container)
-    }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        var onChanged: ((value: String) -> Unit)? = null
-        super.onViewCreated(view, savedInstanceState)
+        var dialogEntries: Array<CharSequence>? = null
-        tool_bar.setTitle(R.string.change_icon)
+        var dialogEntryValues: Array<CharSequence>? = null
-        recycler_view.layoutManager = LinearLayoutManager(requireContext())
+        var dialogIconNames: Array<CharSequence>? = null
-        val adapter = Adapter(requireContext())
+
-        recycler_view.adapter = adapter
+        override fun onStart() {
-        arguments?.let {
+            super.onStart()
-            entries = it.getCharSequenceArray("entries")
+            val dm = DisplayMetrics()
-            entryValues = it.getCharSequenceArray("entryValues")
+            activity?.windowManager?.defaultDisplay?.getMetrics(dm)
-            iconNames = it.getCharSequenceArray("iconNames")
+            dialog?.window?.setLayout(
-            entryValues?.let { values ->
+                (dm.widthPixels * 0.8).toInt(),
-                adapter.setItems(values.toList())
+                ViewGroup.LayoutParams.WRAP_CONTENT
+            )
+        }
+
+        override fun onCreateView(
+            inflater: LayoutInflater,
+            container: ViewGroup?,
+            savedInstanceState: Bundle?
+        ): View? {
+            return inflater.inflate(R.layout.dialog_recycler_view, container)
+        }
+
+        override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+            super.onViewCreated(view, savedInstanceState)
+            tool_bar.setTitle(R.string.change_icon)
+            recycler_view.layoutManager = LinearLayoutManager(requireContext())
+            val adapter = Adapter(requireContext())
+            recycler_view.adapter = adapter
+            arguments?.let {
+                dialogEntries = it.getCharSequenceArray("entries")
+                dialogEntryValues = it.getCharSequenceArray("entryValues")
+                dialogIconNames = it.getCharSequenceArray("iconNames")
+                dialogEntryValues?.let { values ->
+                    adapter.setItems(values.toList())
+                }
             }
         }
-    }
 
 
-    inner class Adapter(context: Context) :
+        inner class Adapter(context: Context) :
-        SimpleRecyclerAdapter<CharSequence>(context, R.layout.item_icon_preference) {
+            SimpleRecyclerAdapter<CharSequence>(context, R.layout.item_icon_preference) {
 
-        override fun convert(
+            override fun convert(
-            holder: ItemViewHolder,
+                holder: ItemViewHolder,
-            item: CharSequence,
+                item: CharSequence,
-            payloads: MutableList<Any>
+                payloads: MutableList<Any>
-        ) {
+            ) {
-            with(holder.itemView) {
+                with(holder.itemView) {
-                val index = findIndexOfValue(item.toString())
+                    val index = findIndexOfValue(item.toString())
-                entries?.let {
+                    dialogEntries?.let {
-                    label.text = it[index]
+                        label.text = it[index]
-                }
+                    }
-                iconNames?.let {
+                    dialogIconNames?.let {
-                    val resId = context.resources
+                        val resId = context.resources
-                        .getIdentifier(it[index].toString(), "mipmap", context.packageName)
+                            .getIdentifier(it[index].toString(), "mipmap", context.packageName)
-                    val d = context.getCompatDrawable(resId)
+                        val d = context.getCompatDrawable(resId)
-                    icon.setImageDrawable(d)
+                        icon.setImageDrawable(d)
-                }
+                    }
-                onClick {
+                    onClick {
-                    onChanged?.invoke(item.toString())
+                        onChanged?.invoke(item.toString())
+                        this@IconDialog.dismiss()
+                    }
                 }
             }
-        }
 
-        private fun findIndexOfValue(value: String?): Int {
+            private fun findIndexOfValue(value: String?): Int {
-            entryValues?.let { values ->
+                dialogEntryValues?.let { values ->
-                for (i in values.indices.reversed()) {
+                    for (i in values.indices.reversed()) {
-                    if (values[i] == value) {
+                        if (values[i] == value) {
-                        return i
+                            return i
+                        }
                     }
                 }
+                return -1
             }
-            return -1
         }
     }
-}
+}

app/src/main/res/layout/item_icon_preference.xml

@@ -11,13 +11,14 @@
         android:layout_height="match_parent"
         android:adjustViewBounds="true"
         android:contentDescription="ICON"
-        android:padding="6dip"
+        android:padding="10dip"
         tools:ignore="HardcodedText" />
 
     <CheckedTextView
         android:id="@+id/label"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:paddingRight="10dp"
         android:layout_alignParentEnd="true"
         android:layout_toRightOf="@+id/icon"
         android:checkMark="?android:attr/listChoiceIndicatorSingle"
@@ -28,6 +29,6 @@
         android:textAppearance="?android:attr/textAppearanceMedium"
         android:textColor="?android:attr/textColorAlertDialogListItem"
         android:textIsSelectable="false"
-        tools:ignore="RtlHardcoded" />
+        tools:ignore="RtlHardcoded,RtlSymmetry" />
 
 </RelativeLayout>

app/src/main/res/xml/pref_config_theme.xml

@@ -6,6 +6,7 @@
         android:defaultValue="icon_main"
         android:key="launcherIcon"
         android:title="@string/change_icon"
+        android:summary="@string/change_icon_summary"
         android:entryValues="@array/icons"
         android:entries="@array/icon_names"
         app:icons="@array/icons"