订阅添加夜间模式,需启用js,还不是很完善

app/src/main/java/io/legado/app/constant/AppConst.kt

@@ -69,4 +69,11 @@ object AppConst {
     )
 
     val sysElevation = appCtx.resources.getDimension(R.dimen.design_appbar_elevation).toInt()
+
+    val darkWebViewJs by lazy {
+        """
+            document.body.style.backgroundColor = "#222222";
+            document.getElementsByTagName('body')[0].style.webkitTextFillColor = '#8a8a8a';
+        """.trimIndent()
+    }
 }

app/src/main/java/io/legado/app/help/http/AjaxWebView.kt

@@ -17,11 +17,7 @@ import java.lang.ref.WeakReference
 
 class AjaxWebView {
     var callback: Callback? = null
-    private var mHandler: AjaxHandler
+    private var mHandler: AjaxHandler = AjaxHandler(this)
-
-    init {
-        mHandler = AjaxHandler(this)
-    }
 
     class AjaxHandler(private val ajaxWebView: AjaxWebView) : Handler(Looper.getMainLooper()) {
 

app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt

@@ -14,7 +14,9 @@ import androidx.activity.viewModels
 import androidx.core.view.size
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
+import io.legado.app.constant.AppConst
 import io.legado.app.databinding.ActivityRssReadBinding
+import io.legado.app.help.AppConfig
 import io.legado.app.lib.theme.DrawableUtils
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.service.help.Download
@@ -94,79 +96,17 @@ class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>
         return super.onCompatOptionsItemSelected(item)
     }
 
+    @SuppressLint("SetJavaScriptEnabled")
     private fun initWebView() {
-        binding.webView.webChromeClient = object : WebChromeClient() {
+        binding.webView.webChromeClient = RssWebChromeClient()
-            override fun onShowCustomView(view: View?, callback: CustomViewCallback?) {
+        binding.webView.webViewClient = RssWebViewClient()
-                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR
-                binding.llView.invisible()
-                binding.customWebView.addView(view)
-                customWebViewCallback = callback
-            }
-
-            override fun onHideCustomView() {
-                binding.customWebView.removeAllViews()
-                binding.llView.visible()
-                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
-            }
-        }
-        binding.webView.webViewClient = object : WebViewClient() {
-            override fun shouldOverrideUrlLoading(
-                view: WebView?,
-                request: WebResourceRequest?
-            ): Boolean {
-                request?.let {
-                    if (it.url.scheme == "http" || it.url.scheme == "https") {
-                        return false
-                    } else if (it.url.scheme == "yuedu") {
-                        when (it.url.host) {
-                            "booksource" -> {
-                                val intent = Intent(
-                                    this@ReadRssActivity,
-                                    ImportBookSourceActivity::class.java
-                                )
-                                intent.data = it.url
-                                startActivity(intent)
-                            }
-                            "rsssource" -> {
-                                val intent = Intent(
-                                    this@ReadRssActivity,
-                                    ImportRssSourceActivity::class.java
-                                )
-                                intent.data = it.url
-                                startActivity(intent)
-                            }
-                            "replace" -> {
-                                val intent = Intent(
-                                    this@ReadRssActivity,
-                                    ImportReplaceRuleActivity::class.java
-                                )
-                                intent.data = it.url
-                                startActivity(intent)
-                            }
-                        }
-                        return true
-                    }
-                    openUrl(it.url)
-                }
-                return true
-            }
-
-            @Suppress("DEPRECATION")
-            override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
-                if (url?.startsWith("http", true) == true) {
-                    return false
-                }
-                url?.let {
-                    openUrl(it)
-                }
-                return true
-            }
-        }
         binding.webView.settings.apply {
             mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW
             domStorageEnabled = true
             allowContentAccess = true
+            //javaScriptEnabled = true
         }
+        upWebViewTheme()
         binding.webView.setOnLongClickListener {
             val hitTestResult = binding.webView.hitTestResult
             if (hitTestResult.type == WebView.HitTestResult.IMAGE_TYPE ||
@@ -207,6 +147,7 @@ class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>
                 Download.start(this, downloadId, fileName)
             }
         }
+
     }
 
     private fun saveImage() {
@@ -254,6 +195,13 @@ class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>
         }
     }
 
+    private fun upWebViewTheme() {
+        if (AppConfig.isNightTheme) {
+            binding.webView
+                .evaluateJavascript(AppConst.darkWebViewJs, null)
+        }
+    }
+
     override fun upStarMenu() {
         if (viewModel.rssStar != null) {
             starMenuItem?.setIcon(R.drawable.ic_star)
@@ -336,4 +284,78 @@ class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>
         binding.webView.destroy()
     }
 
+    inner class RssWebChromeClient : WebChromeClient() {
+        override fun onShowCustomView(view: View?, callback: CustomViewCallback?) {
+            requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR
+            binding.llView.invisible()
+            binding.customWebView.addView(view)
+            customWebViewCallback = callback
+        }
+
+        override fun onHideCustomView() {
+            binding.customWebView.removeAllViews()
+            binding.llView.visible()
+            requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
+        }
+    }
+
+    inner class RssWebViewClient : WebViewClient() {
+        override fun shouldOverrideUrlLoading(
+            view: WebView?,
+            request: WebResourceRequest?
+        ): Boolean {
+            request?.let {
+                if (it.url.scheme == "http" || it.url.scheme == "https") {
+                    return false
+                } else if (it.url.scheme == "yuedu") {
+                    when (it.url.host) {
+                        "booksource" -> {
+                            val intent = Intent(
+                                this@ReadRssActivity,
+                                ImportBookSourceActivity::class.java
+                            )
+                            intent.data = it.url
+                            startActivity(intent)
+                        }
+                        "rsssource" -> {
+                            val intent = Intent(
+                                this@ReadRssActivity,
+                                ImportRssSourceActivity::class.java
+                            )
+                            intent.data = it.url
+                            startActivity(intent)
+                        }
+                        "replace" -> {
+                            val intent = Intent(
+                                this@ReadRssActivity,
+                                ImportReplaceRuleActivity::class.java
+                            )
+                            intent.data = it.url
+                            startActivity(intent)
+                        }
+                    }
+                    return true
+                }
+                openUrl(it.url)
+            }
+            return true
+        }
+
+        @Suppress("DEPRECATION")
+        override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
+            if (url?.startsWith("http", true) == true) {
+                return false
+            }
+            url?.let {
+                openUrl(it)
+            }
+            return true
+        }
+
+        override fun onPageFinished(view: WebView?, url: String?) {
+            super.onPageFinished(view, url)
+            upWebViewTheme()
+        }
+    }
+
 }