优化

app/src/main/java/io/legado/app/base/BaseDialogFragment.kt

@@ -32,13 +32,10 @@ abstract class BaseDialogFragment : DialogFragment(), CoroutineScope {
     abstract fun onFragmentCreated(view: View, savedInstanceState: Bundle?)
 
     override fun show(manager: FragmentManager, tag: String?) {
-        try {
+        kotlin.runCatching {
             //在每个add事务前增加一个remove事务，防止连续的add
             manager.beginTransaction().remove(this).commit()
             super.show(manager, tag)
-        } catch (e: Exception) {
-            //同一实例使用不同的tag会异常,这里捕获一下
-            e.printStackTrace()
         }
     }
 

app/src/main/java/io/legado/app/data/entities/BookSource.kt

@@ -46,14 +46,15 @@ data class BookSource(
     var ruleBookInfo: BookInfoRule? = null,         // 书籍信息页规则
     var ruleToc: TocRule? = null,                   // 目录页规则
     var ruleContent: ContentRule? = null            // 正文页规则
-): Parcelable, JsExtensions {
-    
+) : Parcelable, JsExtensions {
+
     override fun hashCode(): Int {
         return bookSourceUrl.hashCode()
     }
-    
-    override fun equals(other: Any?) = if (other is BookSource) other.bookSourceUrl == bookSourceUrl else false
-    
+
+    override fun equals(other: Any?) =
+        if (other is BookSource) other.bookSourceUrl == bookSourceUrl else false
+
     @Throws(Exception::class)
     fun getHeaderMap() = (HashMap<String, String>().apply {
         this[AppConst.UA_NAME] = AppConfig.userAgent
@@ -71,17 +72,17 @@ data class BookSource(
             }
         }
     }) as Map<String, String>
-    
+
     fun getSearchRule() = ruleSearch ?: SearchRule()
-    
+
     fun getExploreRule() = ruleExplore ?: ExploreRule()
-    
+
     fun getBookInfoRule() = ruleBookInfo ?: BookInfoRule()
-    
+
     fun getTocRule() = ruleToc ?: TocRule()
-    
+
     fun getContentRule() = ruleContent ?: ContentRule()
-    
+
     fun addGroup(group: String) {
         bookSourceGroup?.let {
             if (!it.contains(group)) {
@@ -91,20 +92,20 @@ data class BookSource(
             bookSourceGroup = group
         }
     }
-    
+
     fun removeGroup(group: String) {
         bookSourceGroup?.splitNotBlank("[,;，；]".toRegex())?.toHashSet()?.let {
             it.remove(group)
             bookSourceGroup = TextUtils.join(",", it)
         }
     }
-    
+
     fun getExploreKinds() = arrayListOf<ExploreKind>().apply {
-        exploreUrl?.let {
-            var a = it
+        exploreUrl?.let { urlRule ->
+            var a = urlRule
             if (a.isNotBlank()) {
-                try {
-                    if (it.startsWith("<js>", false)) {
+                kotlin.runCatching {
+                    if (urlRule.startsWith("<js>", false)) {
                         val aCache = ACache.get(App.INSTANCE, "explore")
                         a = aCache.getAsString(bookSourceUrl) ?: ""
                         if (a.isBlank()) {
@@ -114,7 +115,7 @@ data class BookSource(
                             bindings["cookie"] = CookieStore
                             bindings["cache"] = CacheManager
                             a = AppConst.SCRIPT_ENGINE.eval(
-                                it.substring(4, it.lastIndexOf("<")),
+                                urlRule.substring(4, urlRule.lastIndexOf("<")),
                                 bindings
                             ).toString()
                             aCache.put(bookSourceUrl, a)
@@ -126,13 +127,13 @@ data class BookSource(
                         if (d.size > 1)
                             add(ExploreKind(d[0], d[1]))
                     }
-                } catch (e: Exception) {
-                    add(ExploreKind(e.localizedMessage ?: ""))
+                }.onFailure {
+                    add(ExploreKind(it.localizedMessage ?: ""))
                 }
             }
         }
     }
-    
+
     /**
      * 执行JS
      */
@@ -147,60 +148,60 @@ data class BookSource(
 
     fun equal(source: BookSource) =
         equal(bookSourceName, source.bookSourceName)
-            && equal(bookSourceUrl, source.bookSourceUrl)
-            && equal(bookSourceGroup, source.bookSourceGroup)
-            && bookSourceType == source.bookSourceType
-            && equal(bookUrlPattern, source.bookUrlPattern)
-            && equal(bookSourceComment, source.bookSourceComment)
-            && enabled == source.enabled
-            && enabledExplore == source.enabledExplore
-            && equal(header, source.header)
-            && equal(loginUrl, source.loginUrl)
-            && equal(exploreUrl, source.exploreUrl)
-            && equal(searchUrl, source.searchUrl)
-            && getSearchRule() == source.getSearchRule()
-            && getExploreRule() == source.getExploreRule()
-            && getBookInfoRule() == source.getBookInfoRule()
-            && getTocRule() == source.getTocRule()
-            && getContentRule() == source.getContentRule()
-    
+                && equal(bookSourceUrl, source.bookSourceUrl)
+                && equal(bookSourceGroup, source.bookSourceGroup)
+                && bookSourceType == source.bookSourceType
+                && equal(bookUrlPattern, source.bookUrlPattern)
+                && equal(bookSourceComment, source.bookSourceComment)
+                && enabled == source.enabled
+                && enabledExplore == source.enabledExplore
+                && equal(header, source.header)
+                && equal(loginUrl, source.loginUrl)
+                && equal(exploreUrl, source.exploreUrl)
+                && equal(searchUrl, source.searchUrl)
+                && getSearchRule() == source.getSearchRule()
+                && getExploreRule() == source.getExploreRule()
+                && getBookInfoRule() == source.getBookInfoRule()
+                && getTocRule() == source.getTocRule()
+                && getContentRule() == source.getContentRule()
+
     private fun equal(a: String?, b: String?) = a == b || (a.isNullOrEmpty() && b.isNullOrEmpty())
 
     data class ExploreKind(
         var title: String,
         var url: String? = null
     )
-    
+
     class Converters {
         @TypeConverter
         fun exploreRuleToString(exploreRule: ExploreRule?): String = GSON.toJson(exploreRule)
-        
+
         @TypeConverter
         fun stringToExploreRule(json: String?) = GSON.fromJsonObject<ExploreRule>(json)
 
         @TypeConverter
         fun searchRuleToString(searchRule: SearchRule?): String = GSON.toJson(searchRule)
-        
+
         @TypeConverter
         fun stringToSearchRule(json: String?) = GSON.fromJsonObject<SearchRule>(json)
 
         @TypeConverter
         fun bookInfoRuleToString(bookInfoRule: BookInfoRule?): String = GSON.toJson(bookInfoRule)
-        
+
         @TypeConverter
         fun stringToBookInfoRule(json: String?) = GSON.fromJsonObject<BookInfoRule>(json)
 
         @TypeConverter
         fun tocRuleToString(tocRule: TocRule?): String = GSON.toJson(tocRule)
-        
+
         @TypeConverter
         fun stringToTocRule(json: String?) = GSON.fromJsonObject<TocRule>(json)
-        
+
         @TypeConverter
         fun contentRuleToString(contentRule: ContentRule?): String = GSON.toJson(contentRule)
-        
+
         @TypeConverter
         fun stringToContentRule(json: String?) = GSON.fromJsonObject<ContentRule>(json)
-        
+
     }
 }

app/src/main/java/io/legado/app/help/ImageLoader.kt

@@ -22,9 +22,9 @@ object ImageLoader {
             path.isNullOrEmpty() -> Glide.with(context).load(path)
             path.isAbsUrl() -> Glide.with(context).load(AnalyzeUrl(path).getGlideUrl())
             path.isContentScheme() -> Glide.with(context).load(Uri.parse(path))
-            else -> try {
+            else -> kotlin.runCatching {
                 Glide.with(context).load(File(path))
-            } catch (e: Exception) {
+            }.getOrElse {
                 Glide.with(context).load(path)
             }
         }

app/src/main/java/io/legado/app/help/storage/ImportOldData.kt

@@ -15,61 +15,61 @@ object ImportOldData {
 
     fun importUri(context: Context, uri: Uri) {
         if (uri.isContentScheme()) {
-            DocumentFile.fromTreeUri(context, uri)?.listFiles()?.forEach {
-                when (it.name) {
+            DocumentFile.fromTreeUri(context, uri)?.listFiles()?.forEach { doc ->
+                when (doc.name) {
                     "myBookShelf.json" ->
-                        try {
-                            DocumentUtils.readText(context, it.uri)?.let { json ->
+                        kotlin.runCatching {
+                            DocumentUtils.readText(context, doc.uri)?.let { json ->
                                 val importCount = importOldBookshelf(json)
                                 context.toast("成功导入书籍${importCount}")
                             }
-                        } catch (e: java.lang.Exception) {
-                            context.toast("导入书籍失败\n${e.localizedMessage}")
+                        }.onFailure {
+                            context.toast("导入书籍失败\n${it.localizedMessage}")
                         }
                     "myBookSource.json" ->
-                        try {
-                            DocumentUtils.readText(context, it.uri)?.let { json ->
+                        kotlin.runCatching {
+                            DocumentUtils.readText(context, doc.uri)?.let { json ->
                                 val importCount = importOldSource(json)
                                 context.toast("成功导入书源${importCount}")
                             }
-                        } catch (e: Exception) {
-                            context.toast("导入源失败\n${e.localizedMessage}")
+                        }.onFailure {
+                            context.toast("导入源失败\n${it.localizedMessage}")
                         }
                     "myBookReplaceRule.json" ->
-                        try {
-                            DocumentUtils.readText(context, it.uri)?.let { json ->
+                        kotlin.runCatching {
+                            DocumentUtils.readText(context, doc.uri)?.let { json ->
                                 val importCount = importOldReplaceRule(json)
                                 context.toast("成功导入替换规则${importCount}")
                             }
-                        } catch (e: Exception) {
-                            context.toast("导入替换规则失败\n${e.localizedMessage}")
+                        }.onFailure {
+                            context.toast("导入替换规则失败\n${it.localizedMessage}")
                         }
                 }
             }
         } else {
-            uri.path?.let {
-                val file = File(it)
-                try {// 导入书架
+            uri.path?.let { path ->
+                val file = File(path)
+                kotlin.runCatching {// 导入书架
                     val shelfFile =
                         FileUtils.createFileIfNotExist(file, "myBookShelf.json")
                     val json = shelfFile.readText()
                     val importCount = importOldBookshelf(json)
                     context.toast("成功导入书籍${importCount}")
-                } catch (e: Exception) {
-                    context.toast("导入书籍失败\n${e.localizedMessage}")
+                }.onFailure {
+                    context.toast("导入书籍失败\n${it.localizedMessage}")
                 }
 
-                try {// Book source
+                kotlin.runCatching {// Book source
                     val sourceFile =
                         FileUtils.getFile(file, "myBookSource.json")
                     val json = sourceFile.readText()
                     val importCount = importOldSource(json)
                     context.toast("成功导入书源${importCount}")
-                } catch (e: Exception) {
-                    context.toast("导入源失败\n${e.localizedMessage}")
+                }.onFailure {
+                    context.toast("导入源失败\n${it.localizedMessage}")
                 }
 
-                try {// Replace rules
+                kotlin.runCatching {// Replace rules
                     val ruleFile = FileUtils.getFile(file, "myBookReplaceRule.json")
                     if (ruleFile.exists()) {
                         val json = ruleFile.readText()
@@ -78,8 +78,8 @@ object ImportOldData {
                     } else {
                         context.toast("未找到替换规则")
                     }
-                } catch (e: Exception) {
-                    context.toast("导入替换规则失败\n${e.localizedMessage}")
+                }.onFailure {
+                    context.toast("导入替换规则失败\n${it.localizedMessage}")
                 }
             }
         }

app/src/main/java/io/legado/app/lib/webdav/WebDav.kt

@@ -12,7 +12,6 @@ import rxhttp.wrapper.param.toInputStream
 import java.io.File
 import java.io.IOException
 import java.io.InputStream
-import java.io.UnsupportedEncodingException
 import java.net.MalformedURLException
 import java.net.URL
 import java.net.URLEncoder
@@ -39,15 +38,12 @@ class WebDav(urlStr: String) {
     private val url: URL = URL(urlStr)
     private val httpUrl: String? by lazy {
         val raw = url.toString().replace("davs://", "https://").replace("dav://", "http://")
-        try {
-            return@lazy URLEncoder.encode(raw, "UTF-8")
+        return@lazy kotlin.runCatching {
+            URLEncoder.encode(raw, "UTF-8")
                 .replace("\\+".toRegex(), "%20")
                 .replace("%3A".toRegex(), ":")
                 .replace("%2F".toRegex(), "/")
-        } catch (e: UnsupportedEncodingException) {
-            e.printStackTrace()
-            return@lazy null
-        }
+        }.getOrNull()
     }
     val host: String? get() = url.host
     val path get() = url.toString()

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

@@ -30,7 +30,7 @@ class AboutActivity : BaseActivity<ActivityAboutBinding>() {
             .replace(R.id.fl_fragment, aboutFragment, fTag)
             .commit()
         binding.tvAppSummary.post {
-            try {
+            kotlin.runCatching {
                 val span = ForegroundColorSpan(accentColor)
                 val spannableString = SpannableString(binding.tvAppSummary.text)
                 val gzh = getString(R.string.legado_gzh)
@@ -40,8 +40,6 @@ class AboutActivity : BaseActivity<ActivityAboutBinding>() {
                     Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
                 )
                 binding.tvAppSummary.text = spannableString
-            } catch (e: Exception) {
-                e.printStackTrace()
             }
         }
     }

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

@@ -93,12 +93,10 @@ class AboutFragment : PreferenceFragmentCompat() {
             Uri.parse("mqqopensdkapi://bizAgent/qm/qr?url=http%3A%2F%2Fqm.qq.com%2Fcgi-bin%2Fqm%2Fqr%3Ffrom%3Dapp%26p%3Dandroid%26k%3D$key")
         // 此Flag可根据具体产品需要自定义，如设置，则在加群界面按返回，返回手Q主界面，不设置，按返回会返回到呼起产品界面
         // intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
-        return try {
+        return kotlin.runCatching {
             startActivity(intent)
             true
-        } catch (e: java.lang.Exception) {
-            false
-        }
+        }.getOrDefault(false)
     }
 
 }

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

@@ -130,7 +130,7 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                 readAloud(callBack.selectedText)
             }
             R.id.menu_browser -> {
-                try {
+                kotlin.runCatching {
                     val intent = if (callBack.selectedText.isAbsUrl()) {
                         Intent(Intent.ACTION_VIEW).apply {
                             data = Uri.parse(callBack.selectedText)
@@ -141,9 +141,9 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                         }
                     }
                     context.startActivity(intent)
-                } catch (e: Exception) {
-                    e.printStackTrace()
-                    context.toast(e.localizedMessage ?: "ERROR")
+                }.onFailure {
+                    it.printStackTrace()
+                    context.toast(it.localizedMessage ?: "ERROR")
                 }
             }
             else -> item.intent?.let {
@@ -210,7 +210,7 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
      */
     @RequiresApi(Build.VERSION_CODES.M)
     private fun onInitializeMenu(menu: Menu) {
-        try {
+        kotlin.runCatching {
             var menuItemOrder = 100
             for (resolveInfo in getSupportedActivities()) {
                 menu.add(
@@ -218,8 +218,8 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                     menuItemOrder++, resolveInfo.loadLabel(context.packageManager)
                 ).intent = createProcessTextIntentForResolveInfo(resolveInfo)
             }
-        } catch (e: Exception) {
-            context.toast("获取文字操作菜单出错:${e.localizedMessage}")
+        }.onFailure {
+            context.toast("获取文字操作菜单出错:${it.localizedMessage}")
         }
     }
 

app/src/main/java/io/legado/app/ui/book/read/page/ReadView.kt

@@ -338,10 +338,10 @@ class ReadView(context: Context, attrs: AttributeSet) :
                 }
                 end -= 1
             }
-            try {
+            kotlin.runCatching {
                 curPage.selectStartMoveIndex(firstRelativePage, lineStart, start)
                 curPage.selectEndMoveIndex(firstRelativePage, lineEnd, end)
-            } catch (e: Exception) {
+            }.onFailure {
                 print(
                     """
                     curPage.selectStartMoveIndex($firstRelativePage, $lineStart, $start)

app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt

@@ -352,7 +352,7 @@ object ChapterProvider {
     }
 
     private fun getTypeface(fontPath: String): Typeface {
-        return try {
+        return kotlin.runCatching {
             when {
                 fontPath.isContentScheme() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.O -> {
                     val fd = App.INSTANCE.contentResolver
@@ -370,7 +370,7 @@ object ChapterProvider {
                     else -> Typeface.SANS_SERIF
                 }
             }
-        } catch (e: Exception) {
+        }.getOrElse {
             ReadBookConfig.textFont = ""
             ReadBookConfig.save()
             Typeface.SANS_SERIF

app/src/main/java/io/legado/app/ui/filepicker/FilePicker.kt

@@ -30,11 +30,10 @@ object FilePicker {
             items(selectList) { _, index ->
                 when (index) {
                     0 -> {
-                        try {
+                        kotlin.runCatching {
                             val intent = createSelectDirIntent()
                             activity.startActivityForResult(intent, requestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
+                        }.onFailure {
                             checkPermissions(activity) {
                                 FilePickerDialog.show(
                                     activity.supportFragmentManager,
@@ -81,11 +80,10 @@ object FilePicker {
             items(selectList) { _, index ->
                 when (index) {
                     0 -> {
-                        try {
+                        kotlin.runCatching {
                             val intent = createSelectDirIntent()
                             fragment.startActivityForResult(intent, requestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
+                        }.onFailure {
                             checkPermissions(fragment) {
                                 FilePickerDialog.show(
                                     fragment.childFragmentManager,
@@ -133,15 +131,14 @@ object FilePicker {
             items(selectList) { _, index ->
                 when (index) {
                     0 -> {
-                        try {
+                        kotlin.runCatching {
                             val intent = createSelectFileIntent()
                             intent.putExtra(
                                 Intent.EXTRA_MIME_TYPES,
                                 typesOfExtensions(allowExtensions)
                             )
                             activity.startActivityForResult(intent, requestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
+                        }.onFailure {
                             checkPermissions(activity) {
                                 FilePickerDialog.show(
                                     activity.supportFragmentManager,
@@ -191,15 +188,14 @@ object FilePicker {
             items(selectList) { _, index ->
                 when (index) {
                     0 -> {
-                        try {
+                        kotlin.runCatching {
                             val intent = createSelectFileIntent()
                             intent.putExtra(
                                 Intent.EXTRA_MIME_TYPES,
                                 typesOfExtensions(allowExtensions)
                             )
                             fragment.startActivityForResult(intent, requestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
+                        }.onFailure {
                             checkPermissions(fragment) {
                                 FilePickerDialog.show(
                                     fragment.childFragmentManager,

app/src/main/java/io/legado/app/ui/filepicker/entity/JavaBean.kt

@@ -34,15 +34,13 @@ open class JavaBean : Serializable {
         val fields = list.toTypedArray()
         for (field in fields) {
             val fieldName = field.name
-            try {
+            kotlin.runCatching {
                 val obj = field.get(this)
                 sb.append(fieldName)
                 sb.append("=")
                 sb.append(obj)
                 sb.append("\n")
-            } catch (ignored: IllegalAccessException) {
             }
-
         }
         return sb.toString()
     }

app/src/main/java/io/legado/app/ui/filepicker/utils/ConvertUtils.kt

@@ -6,7 +6,6 @@ import android.graphics.BitmapFactory
 import android.graphics.drawable.BitmapDrawable
 import android.graphics.drawable.Drawable
 import java.io.BufferedReader
-import java.io.IOException
 import java.io.InputStream
 import java.io.InputStreamReader
 import java.text.DecimalFormat
@@ -24,11 +23,9 @@ object ConvertUtils {
     const val KB: Long = 1024
 
     fun toInt(obj: Any): Int {
-        return try {
+        return kotlin.runCatching {
             Integer.parseInt(obj.toString())
-        } catch (e: NumberFormatException) {
-            -1
-        }
+        }.getOrDefault(-1)
     }
 
     fun toInt(bytes: ByteArray): Int {
@@ -42,11 +39,9 @@ object ConvertUtils {
     }
 
     fun toFloat(obj: Any): Float {
-        return try {
+        return kotlin.runCatching {
             java.lang.Float.parseFloat(obj.toString())
-        } catch (e: NumberFormatException) {
-            -1f
-        }
+        }.getOrDefault(-1f)
     }
 
     fun toString(objects: Array<Any>, tag: String): String {
@@ -62,7 +57,7 @@ object ConvertUtils {
     fun toBitmap(bytes: ByteArray, width: Int = -1, height: Int = -1): Bitmap? {
         var bitmap: Bitmap? = null
         if (bytes.isNotEmpty()) {
-            try {
+            kotlin.runCatching {
                 val options = BitmapFactory.Options()
                 // 设置让解码器以最佳方式解码
                 options.inPreferredConfig = null
@@ -72,7 +67,6 @@ object ConvertUtils {
                 }
                 bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.size, options)
                 bitmap!!.density = 96// 96 dpi
-            } catch (e: Exception) {
             }
         }
         return bitmap
@@ -101,7 +95,7 @@ object ConvertUtils {
     @JvmOverloads
     fun toString(`is`: InputStream, charset: String = "utf-8"): String {
         val sb = StringBuilder()
-        try {
+        kotlin.runCatching {
             val reader = BufferedReader(InputStreamReader(`is`, charset))
             while (true) {
                 val line = reader.readLine()
@@ -113,9 +107,7 @@ object ConvertUtils {
             }
             reader.close()
             `is`.close()
-        } catch (e: IOException) {
         }
-
         return sb.toString()
     }
 

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

@@ -246,13 +246,13 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
         when (requestCode) {
             importRequestCode -> if (resultCode == Activity.RESULT_OK) {
                 data?.data?.let { uri ->
-                    try {
+                    kotlin.runCatching {
                         uri.readText(this)?.let {
                             val dataKey = IntentDataHelp.putData(it)
                             startActivity<ImportReplaceRuleActivity>("dataKey" to dataKey)
                         }
-                    } catch (e: Exception) {
-                        toast("readTextError:${e.localizedMessage}")
+                    }.onFailure {
+                        toast("readTextError:${it.localizedMessage}")
                     }
                 }
             }

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

@@ -257,13 +257,13 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
         when (requestCode) {
             importRequestCode -> if (resultCode == Activity.RESULT_OK) {
                 data?.data?.let { uri ->
-                    try {
+                    kotlin.runCatching {
                         uri.readText(this)?.let {
                             val dataKey = IntentDataHelp.putData(it)
                             startActivity<ImportRssSourceActivity>("dataKey" to dataKey)
                         }
-                    } catch (e: Exception) {
-                        toast("readTextError:${e.localizedMessage}")
+                    }.onFailure {
+                        toast("readTextError:${it.localizedMessage}")
                     }
                 }
             }

app/src/main/java/io/legado/app/ui/widget/font/FontAdapter.kt

@@ -29,7 +29,7 @@ class FontAdapter(context: Context, val callBack: CallBack) :
         payloads: MutableList<Any>
     ) {
         with(binding) {
-            try {
+            kotlin.runCatching {
                 val typeface: Typeface? = if (item.isContentPath) {
                     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                         context.contentResolver
@@ -44,9 +44,9 @@ class FontAdapter(context: Context, val callBack: CallBack) :
                     Typeface.createFromFile(item.uri.toString())
                 }
                 tvFont.typeface = typeface
-            } catch (e: Exception) {
-                e.printStackTrace()
-                context.toast("Read ${item.name} Error: ${e.localizedMessage}")
+            }.onFailure {
+                it.printStackTrace()
+                context.toast("Read ${item.name} Error: ${it.localizedMessage}")
             }
             tvFont.text = item.name
             root.onClick { callBack.onClick(item) }

app/src/main/java/io/legado/app/ui/widget/text/BadgeView.kt

@@ -43,12 +43,9 @@ class BadgeView @JvmOverloads constructor(
                 return null
             }
             val text = text.toString()
-            return try {
+            return kotlin.runCatching {
                 Integer.parseInt(text)
-            } catch (e: NumberFormatException) {
-                null
-            }
-
+            }.getOrNull()
         }
 
     var badgeGravity: Int

app/src/main/java/io/legado/app/utils/StringUtils.kt

@@ -3,7 +3,6 @@ package io.legado.app.utils
 import android.annotation.SuppressLint
 import android.text.TextUtils.isEmpty
 import java.text.DecimalFormat
-import java.text.ParseException
 import java.text.SimpleDateFormat
 import java.util.*
 import java.util.regex.Matcher
@@ -56,7 +55,7 @@ object StringUtils {
         @SuppressLint("SimpleDateFormat")
         val format = SimpleDateFormat(pattern)
         val calendar = Calendar.getInstance()
-        try {
+        kotlin.runCatching {
             val date = format.parse(source) ?: return ""
             val curTime = calendar.timeInMillis
             calendar.time = date
@@ -95,8 +94,8 @@ object StringUtils {
                     convertFormat.format(date)
                 }
             }
-        } catch (e: ParseException) {
-            e.printStackTrace()
+        }.onFailure {
+            it.printStackTrace()
         }
 
         return ""
@@ -173,7 +172,7 @@ object StringUtils {
         }
 
         // "一千零二十五", "一千二" 形式
-        try {
+        return kotlin.runCatching {
             for (i in cn.indices) {
                 val tmpNum = ChnMap[cn[i]]!!
                 when {
@@ -204,11 +203,8 @@ object StringUtils {
                 }
             }
             result += tmp + billion
-            return result
-        } catch (e: Exception) {
-            return -1
-        }
-
+            result
+        }.getOrDefault(-1)
     }
 
     fun stringToInt(str: String?): Int {

app/src/main/java/io/legado/app/utils/SystemUtils.kt

@@ -19,13 +19,13 @@ object SystemUtils {
 
     fun getScreenOffTime(context: Context): Int {
         var screenOffTime = 0
-        try {
+        kotlin.runCatching {
             screenOffTime = Settings.System.getInt(
                 context.contentResolver,
                 Settings.System.SCREEN_OFF_TIMEOUT
             )
-        } catch (e: Exception) {
-            e.printStackTrace()
+        }.onFailure {
+            it.printStackTrace()
         }
 
         return screenOffTime

app/src/main/java/io/legado/app/utils/ViewExtensions.kt

@@ -107,13 +107,11 @@ fun RadioGroup.checkByIndex(index: Int) {
 
 @SuppressLint("RestrictedApi")
 fun PopupMenu.show(x: Int, y: Int) {
-    try {
+    kotlin.runCatching {
         val field: Field = this.javaClass.getDeclaredField("mPopup")
         field.isAccessible = true
         (field.get(this) as MenuPopupHelper).show(x, y)
-    } catch (e: NoSuchFieldException) {
-        e.printStackTrace()
-    } catch (e: IllegalAccessException) {
-        e.printStackTrace()
+    }.onFailure {
+        it.printStackTrace()
     }
 }