优化

app/src/main/java/io/legado/app/ui/book/group/GroupEditDialog.kt

@@ -55,7 +55,7 @@ class GroupEditDialog() : BaseDialogFragment(R.layout.dialog_book_group_edit) {
         }
         binding.run {
             ivCover.onClick {
-                selectImage.launch(null)
+                selectImage.launch()
             }
             btnCancel.onClick {
                 dismiss()

app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt

@@ -58,7 +58,7 @@ class BookInfoEditActivity :
             }
         }
         tvSelectCover.setOnClickListener {
-            selectCover.launch(null)
+            selectCover.launch()
         }
         tvRefreshCover.setOnClickListener {
             viewModel.book?.customCoverUrl = tieCoverUrl.text?.toString()

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

@@ -117,7 +117,7 @@ class BgTextConfigDialog : BaseDialogFragment(R.layout.dialog_read_bg_text) {
                 ivBg.setImageResource(R.drawable.ic_image)
                 ivBg.setColorFilter(primaryTextColor)
                 root.setOnClickListener {
-                    selectBgImage.launch(null)
+                    selectBgImage.launch()
                 }
             }
         }

app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt

@@ -14,6 +14,7 @@ import io.legado.app.lib.theme.accentColor
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.ui.qrcode.QrCodeResult
 import io.legado.app.ui.widget.dialog.TextDialog
+import io.legado.app.utils.launch
 import io.legado.app.utils.setEdgeEffectColor
 import io.legado.app.utils.showDialogFragment
 import io.legado.app.utils.toastOnUi
@@ -137,7 +138,7 @@ class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookS
 
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
-            R.id.menu_scan -> qrCodeResult.launch(null)
+            R.id.menu_scan -> qrCodeResult.launch()
             R.id.menu_search_src -> showDialogFragment(TextDialog(viewModel.searchSrc))
             R.id.menu_book_src -> showDialogFragment(TextDialog(viewModel.bookSrc))
             R.id.menu_toc_src -> showDialogFragment(TextDialog(viewModel.tocSrc))

app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt

@@ -112,7 +112,7 @@ class BookSourceEditActivity :
             }
             R.id.menu_copy_source -> sendToClip(GSON.toJson(getSource()))
             R.id.menu_paste_source -> viewModel.pasteSource { upRecyclerView(it) }
-            R.id.menu_qr_code_camera -> qrCodeResult.launch(null)
+            R.id.menu_qr_code_camera -> qrCodeResult.launch()
             R.id.menu_share_str -> share(GSON.toJson(getSource()))
             R.id.menu_share_qr -> shareWithQr(
                 GSON.toJson(getSource()),

app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt

@@ -120,7 +120,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.menu_add_book_source -> startActivity<BookSourceEditActivity>()
-            R.id.menu_import_qr -> qrResult.launch(null)
+            R.id.menu_import_qr -> qrResult.launch()
             R.id.menu_group_manage -> showDialogFragment<GroupManageDialog>()
             R.id.menu_import_local -> importDoc.launch {
                 mode = HandleFileContract.FILE

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(null) }
+            ?.onLongClick = { restoreDir.launch() }
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -206,11 +206,11 @@ class BackupConfigFragment : BasePreferenceFragment(),
 
     override fun onPreferenceTreeClick(preference: Preference?): Boolean {
         when (preference?.key) {
-            PreferKey.backupPath -> selectBackupPath.launch(null)
+            PreferKey.backupPath -> selectBackupPath.launch()
             PreferKey.restoreIgnore -> restoreIgnore()
             "web_dav_backup" -> backup()
             "web_dav_restore" -> restore()
-            "import_old" -> restoreOld.launch(null)
+            "import_old" -> restoreOld.launch()
         }
         return super.onPreferenceTreeClick(preference)
     }
@@ -234,7 +234,7 @@ class BackupConfigFragment : BasePreferenceFragment(),
     fun backup() {
         val backupPath = AppConfig.backupPath
         if (backupPath.isNullOrEmpty()) {
-            backupDir.launch(null)
+            backupDir.launch()
         } else {
             if (backupPath.isContentScheme()) {
                 val uri = Uri.parse(backupPath)
@@ -249,7 +249,7 @@ class BackupConfigFragment : BasePreferenceFragment(),
                         appCtx.toastOnUi(getString(R.string.backup_fail, it.localizedMessage))
                     }
                 } else {
-                    backupDir.launch(null)
+                    backupDir.launch()
                 }
             } else {
                 backupUsePermission(backupPath)
@@ -301,13 +301,13 @@ class BackupConfigFragment : BasePreferenceFragment(),
                         Restore.restore(requireContext(), backupPath)
                     }
                 } else {
-                    restoreDir.launch(null)
+                    restoreDir.launch()
                 }
             } else {
                 restoreUsePermission(backupPath)
             }
         } else {
-            restoreDir.launch(null)
+            restoreDir.launch()
         }
     }
 

app/src/main/java/io/legado/app/ui/document/HandleFileActivity.kt

@@ -18,6 +18,7 @@ import io.legado.app.lib.permission.Permissions
 import io.legado.app.lib.permission.PermissionsCompat
 import io.legado.app.utils.getJsonArray
 import io.legado.app.utils.isContentScheme
+import io.legado.app.utils.launch
 import io.legado.app.utils.toastOnUi
 import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.io.File
@@ -80,7 +81,7 @@ class HandleFileActivity :
             items(selectList) { _, item, _ ->
                 when (item.value) {
                     HandleFileContract.DIR -> kotlin.runCatching {
-                        selectDocTree.launch(null)
+                        selectDocTree.launch()
                     }.onFailure {
                         toastOnUi(R.string.open_sys_dir_picker_error)
                         checkPermissions {

app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt

@@ -12,6 +12,7 @@ import io.legado.app.base.BaseActivity
 import io.legado.app.databinding.ActivityQrcodeCaptureBinding
 import io.legado.app.utils.QRCodeUtils
 import io.legado.app.utils.SelectImageContract
+import io.legado.app.utils.launch
 import io.legado.app.utils.readBytes
 import io.legado.app.utils.viewbindingdelegate.viewBinding
 
@@ -41,7 +42,7 @@ class QrCodeActivity : BaseActivity<ActivityQrcodeCaptureBinding>(), OnScanResul
 
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
-            R.id.action_choose_from_gallery -> selectQrImage.launch(null)
+            R.id.action_choose_from_gallery -> selectQrImage.launch()
         }
         return super.onCompatOptionsItemSelected(item)
     }

app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt

@@ -224,7 +224,7 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
                 mode = HandleFileContract.FILE
                 allowExtensions = arrayOf("txt", "json")
             }
-            R.id.menu_import_qr -> qrCodeResult.launch(null)
+            R.id.menu_import_qr -> qrCodeResult.launch()
             R.id.menu_help -> showHelp()
             else -> if (item.groupId == R.id.replace_group) {
                 searchView.setQuery("group:${item.title}", true)

app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt

@@ -125,7 +125,7 @@ class RssSourceEditActivity :
                 }
             }
             R.id.menu_copy_source -> sendToClip(GSON.toJson(getRssSource()))
-            R.id.menu_qr_code_camera -> qrCodeResult.launch(null)
+            R.id.menu_qr_code_camera -> qrCodeResult.launch()
             R.id.menu_paste_source -> viewModel.pasteSource { upRecyclerView(it) }
             R.id.menu_share_str -> share(GSON.toJson(getRssSource()))
             R.id.menu_share_qr -> shareWithQr(

app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt

@@ -114,7 +114,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
                 allowExtensions = arrayOf("txt", "json")
             }
             R.id.menu_import_onLine -> showImportDialog()
-            R.id.menu_import_qr -> qrCodeResult.launch(null)
+            R.id.menu_import_qr -> qrCodeResult.launch()
             R.id.menu_group_manage -> showDialogFragment<GroupManageDialog>()
             R.id.menu_import_default -> viewModel.importDefault()
             R.id.menu_help -> showHelp()