优化

app/src/main/java/io/legado/app/ui/about/AboutFragment.kt

@@ -46,8 +46,8 @@ class AboutFragment : PreferenceFragmentCompat() {
         listView.overScrollMode = View.OVER_SCROLL_NEVER
     }
 
-    override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-        when (preference?.key) {
+    override fun onPreferenceTreeClick(preference: Preference): Boolean {
+        when (preference.key) {
             "contributors" -> openUrl(R.string.contributors_url)
             "update_log" -> show("updateLog.md")
             "check_update" -> checkUpdate()

app/src/main/java/io/legado/app/ui/about/DonateFragment.kt

@@ -29,8 +29,8 @@ class DonateFragment : PreferenceFragmentCompat() {
         listView.overScrollMode = View.OVER_SCROLL_NEVER
     }
 
-    override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-        when (preference?.key) {
+    override fun onPreferenceTreeClick(preference: Preference): Boolean {
+        when (preference.key) {
             "wxZsm" -> requireContext().openUrl(wxZsRwmUrl)
             "zfbHbRwm" -> requireContext().openUrl(zfbHbRwmUrl)
             "zfbSkRwm" -> requireContext().openUrl(zfbSkRwmUrl)

app/src/main/java/io/legado/app/ui/book/read/config/MoreConfigDialog.kt

@@ -84,13 +84,13 @@ class MoreConfigDialog : DialogFragment() {
             super.onResume()
             preferenceManager
                 .sharedPreferences
-                .registerOnSharedPreferenceChangeListener(this)
+                ?.registerOnSharedPreferenceChangeListener(this)
         }
 
         override fun onPause() {
             preferenceManager
                 .sharedPreferences
-                .unregisterOnSharedPreferenceChangeListener(this)
+                ?.unregisterOnSharedPreferenceChangeListener(this)
             super.onPause()
         }
 
@@ -131,8 +131,8 @@ class MoreConfigDialog : DialogFragment() {
             }
         }
 
-        override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-            when (preference?.key) {
+        override fun onPreferenceTreeClick(preference: Preference): Boolean {
+            when (preference.key) {
                 "customPageKey" -> PageKeyDialog(requireContext()).show()
                 "clickRegionalConfig" -> {
                     (activity as? ReadBookActivity)?.showClickRegionalConfig()

app/src/main/java/io/legado/app/ui/book/read/config/ReadAloudConfigDialog.kt

@@ -85,16 +85,16 @@ class ReadAloudConfigDialog : DialogFragment() {
 
         override fun onResume() {
             super.onResume()
-            preferenceManager.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
+            preferenceManager.sharedPreferences?.registerOnSharedPreferenceChangeListener(this)
         }
 
         override fun onPause() {
-            preferenceManager.sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
+            preferenceManager.sharedPreferences?.unregisterOnSharedPreferenceChangeListener(this)
             super.onPause()
         }
 
-        override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-            when (preference?.key) {
+        override fun onPreferenceTreeClick(preference: Preference): Boolean {
+            when (preference.key) {
                 PreferKey.ttsEngine -> showDialogFragment(SpeakEngineDialog())
             }
             return super.onPreferenceTreeClick(preference)

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

@@ -129,7 +129,7 @@ class BackupConfigFragment : BasePreferenceFragment(),
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         activity?.setTitle(R.string.backup_restore)
-        preferenceManager.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.registerOnSharedPreferenceChangeListener(this)
         listView.setEdgeEffectColor(primaryColor)
         setHasOptionsMenu(true)
         if (!LocalConfig.backupHelpVersionIsLast) {
@@ -157,7 +157,7 @@ class BackupConfigFragment : BasePreferenceFragment(),
 
     override fun onDestroy() {
         super.onDestroy()
-        preferenceManager.sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.unregisterOnSharedPreferenceChangeListener(this)
     }
 
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
@@ -204,8 +204,8 @@ class BackupConfigFragment : BasePreferenceFragment(),
         }
     }
 
-    override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-        when (preference?.key) {
+    override fun onPreferenceTreeClick(preference: Preference): Boolean {
+        when (preference.key) {
             PreferKey.backupPath -> selectBackupPath.launch()
             PreferKey.restoreIgnore -> backupIgnore()
             "web_dav_backup" -> backup()

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

@@ -6,11 +6,11 @@ import android.view.ViewGroup
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
 import io.legado.app.databinding.DialogCheckSourceConfigBinding
-import io.legado.app.model.CheckSource
 import io.legado.app.lib.theme.primaryColor
+import io.legado.app.model.CheckSource
 import io.legado.app.utils.setLayout
-import io.legado.app.utils.viewbindingdelegate.viewBinding
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import splitties.views.onClick
 
 class CheckSourceConfig : BaseDialogFragment(R.layout.dialog_check_source_config) {
@@ -31,11 +31,11 @@ class CheckSourceConfig : BaseDialogFragment(R.layout.dialog_check_source_config
         binding.toolBar.setBackgroundColor(primaryColor)
         CheckSource.run {
             binding.checkSourceTimeout.setText((timeout / 1000).toString())
-            binding.checkSearch?.isChecked = checkSearch
-            binding.checkDiscovery?.isChecked = checkDiscovery
-            binding.checkInfo?.isChecked = checkInfo
-            binding.checkCategory?.isChecked = checkCategory
-            binding.checkContent?.isChecked = checkContent
+            binding.checkSearch.isChecked = checkSearch
+            binding.checkDiscovery.isChecked = checkDiscovery
+            binding.checkInfo.isChecked = checkInfo
+            binding.checkCategory.isChecked = checkCategory
+            binding.checkContent.isChecked = checkContent
             binding.tvCancel.onClick {
                 dismiss()
             }
@@ -47,22 +47,28 @@ class CheckSourceConfig : BaseDialogFragment(R.layout.dialog_check_source_config
                         return@onClick
                     }
                     text.toLong() < minTimeout -> {
-                        toastOnUi("${getString(R.string.timeout)}${getString(R.string.less_than)}${minTimeout}${getString(R.string.seconds)}")
+                        toastOnUi(
+                            "${getString(R.string.timeout)}${getString(R.string.less_than)}${minTimeout}${
+                                getString(
+                                    R.string.seconds
+                                )
+                            }"
+                        )
                         return@onClick
                     }
                     else -> timeout = text.toLong() * 1000
                 }
-                val _checkSearch = binding.checkSearch?.isChecked
-                val _checkDiscovery = binding.checkDiscovery?.isChecked
-                if (!_checkSearch && !_checkDiscovery) {
+                val mCheckSearch = binding.checkSearch.isChecked
+                val mCheckDiscovery = binding.checkDiscovery.isChecked
+                if (!mCheckSearch && !mCheckDiscovery) {
                     toastOnUi(getString(R.string.error_check_source_config))
                     return@onClick
                 }
-                checkSearch = _checkSearch
-                checkDiscovery = _checkDiscovery
-                checkInfo = binding.checkInfo?.isChecked
-                checkCategory = binding.checkCategory?.isChecked
-                checkContent = binding.checkContent?.isChecked
+                checkSearch = mCheckSearch
+                checkDiscovery = mCheckDiscovery
+                checkInfo = binding.checkInfo.isChecked
+                checkCategory = binding.checkCategory.isChecked
+                checkContent = binding.checkContent.isChecked
                 putConfig()
                 dismiss()
             }

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

@@ -48,12 +48,12 @@ class CoverConfigFragment : BasePreferenceFragment(),
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        preferenceManager.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.registerOnSharedPreferenceChangeListener(this)
     }
 
     override fun onDestroy() {
         super.onDestroy()
-        preferenceManager.sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.unregisterOnSharedPreferenceChangeListener(this)
     }
 
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
@@ -81,8 +81,8 @@ class CoverConfigFragment : BasePreferenceFragment(),
     }
 
     @SuppressLint("PrivateResource")
-    override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-        when (preference?.key) {
+    override fun onPreferenceTreeClick(preference: Preference): Boolean {
+        when (preference.key) {
             PreferKey.defaultCover ->
                 if (getPrefString(PreferKey.defaultCover).isNullOrEmpty()) {
                     selectImage.launch(requestCodeCover)

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

@@ -57,17 +57,17 @@ class OtherConfigFragment : BasePreferenceFragment(),
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         activity?.setTitle(R.string.other_setting)
-        preferenceManager.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.registerOnSharedPreferenceChangeListener(this)
         listView.setEdgeEffectColor(primaryColor)
     }
 
     override fun onDestroy() {
         super.onDestroy()
-        preferenceManager.sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.unregisterOnSharedPreferenceChangeListener(this)
     }
 
-    override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-        when (preference?.key) {
+    override fun onPreferenceTreeClick(preference: Preference): Boolean {
+        when (preference.key) {
             PreferKey.userAgent -> showUserAgentDialog()
             PreferKey.defaultBookTreeUri -> localBookTreeSelect.launch {
                 title = getString(R.string.select_book_folder)

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

@@ -90,12 +90,12 @@ class ThemeConfigFragment : BasePreferenceFragment(),
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        preferenceManager.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.registerOnSharedPreferenceChangeListener(this)
     }
 
     override fun onDestroy() {
         super.onDestroy()
-        preferenceManager.sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
+        preferenceManager.sharedPreferences?.unregisterOnSharedPreferenceChangeListener(this)
     }
 
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
@@ -140,8 +140,8 @@ class ThemeConfigFragment : BasePreferenceFragment(),
     }
 
     @SuppressLint("PrivateResource")
-    override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-        when (val key = preference?.key) {
+    override fun onPreferenceTreeClick(preference: Preference): Boolean {
+        when (val key = preference.key) {
             PreferKey.barElevation -> NumberPickerDialog(requireContext())
                 .setTitle(getString(R.string.bar_elevation))
                 .setMaxValue(32)

app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt

@@ -107,11 +107,11 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config) {
 
         override fun onResume() {
             super.onResume()
-            preferenceManager.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
+            preferenceManager.sharedPreferences?.registerOnSharedPreferenceChangeListener(this)
         }
 
         override fun onPause() {
-            preferenceManager.sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
+            preferenceManager.sharedPreferences?.unregisterOnSharedPreferenceChangeListener(this)
             super.onPause()
         }
 
@@ -131,8 +131,8 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config) {
             }
         }
 
-        override fun onPreferenceTreeClick(preference: Preference?): Boolean {
-            when (preference?.key) {
+        override fun onPreferenceTreeClick(preference: Preference): Boolean {
+            when (preference.key) {
                 "bookSourceManage" -> startActivity<BookSourceActivity>()
                 "replaceManage" -> startActivity<ReplaceRuleActivity>()
                 "setting" -> startActivity<ConfigActivity> {

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

@@ -138,8 +138,8 @@ class ColorPreference(context: Context, attrs: AttributeSet) : Preference(contex
         }
     }
 
-    override fun onGetDefaultValue(a: TypedArray?, index: Int): Any {
-        return a!!.getInteger(index, Color.BLACK)
+    override fun onGetDefaultValue(a: TypedArray, index: Int): Any {
+        return a.getInteger(index, Color.BLACK)
     }
 
     override fun onColorSelected(dialogId: Int, @ColorInt color: Int) {

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

@@ -29,7 +29,7 @@ class PreferenceCategory(context: Context, attrs: AttributeSet) :
             view.text = title
             if (view.isInEditMode) return
             view.setTextColor(context.accentColor)
-            view.isVisible = title != null && title.isNotEmpty()
+            view.isVisible = !title.isNullOrEmpty()
 
             val da = holder.findViewById(R.id.preference_divider_above)
             val dividerColor = if (AppConfig.isNightTheme) {