增加启动页，允许自定义要访问的url

app/src/main/java/com/maxrocky/nativeview/fragment/MainFragment.kt

@@ -27,6 +27,14 @@ import kotlin.RuntimeException
 class MainFragment : Fragment() {
     companion object {
         private const val TAG = "MainFragment"
+        private const val DEFAULT_URL = "file:///android_asset/index.html"
+        private const val ARG_URL = "arg_url"
+
+        fun createStartBundle(): Bundle = Bundle()
+
+        fun createStartBundle(url: String): Bundle = Bundle().apply {
+            putString(ARG_URL, url)
+        }
     }
 
     private lateinit var wv: WebView
@@ -68,8 +76,11 @@ class MainFragment : Fragment() {
             javaScriptEnabled = true
         }
         wv.addJavascriptInterface(WebInterface(), "maxrocky")
-        wv.loadUrl("file:///android_asset/index.html")
-//        wv.loadUrl("http://114.115.202.253:8080/#/")
+        var url = arguments?.getString(ARG_URL)
+        if (url.isNullOrEmpty()) {
+            url = DEFAULT_URL
+        }
+        wv.loadUrl(url)
 
         videoContract = VideoContract(this, wv)
         cameraContract = CameraContract(this, wv)

app/src/main/java/com/maxrocky/nativeview/fragment/StartFragment.kt

+package com.maxrocky.nativeview.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.TextView
+import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.findNavController
+import com.maxrocky.nativeview.R
+
+class StartFragment : Fragment() {
+    private lateinit var urlTextView: TextView
+    private lateinit var button: Button
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? = inflater.inflate(R.layout.fragment_start, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        urlTextView = view.findViewById(R.id.url)
+        button = view.findViewById(R.id.enter)
+
+        button.setOnClickListener {
+            val url = urlTextView.text.trim().toString()
+            findNavController().navigate(
+                R.id.action_startFragment_to_mainFragment,
+                MainFragment.createStartBundle(url)
+            )
+        }
+    }
+}
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <TextView
+        android:id="@+id/url_label"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/url_label"
+        android:layout_marginTop="20dp"
+        android:layout_marginStart="20dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"/>
+
+    <TextView
+        android:id="@+id/url"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="10dp"
+        android:layout_marginEnd="20dp"
+        app:layout_constraintTop_toTopOf="@id/url_label"
+        app:layout_constraintStart_toEndOf="@id/url_label"
+        app:layout_constraintEnd_toEndOf="parent" />
+
+    <Button
+        android:id="@+id/enter"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/enter_button"
+        android:layout_marginTop="10dp"
+        app:layout_constraintStart_toStartOf="@id/url_label"
+        app:layout_constraintTop_toBottomOf="@id/url_label"
+        app:layout_constraintEnd_toEndOf="@id/url" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

app/src/main/res/navigation/nav_graph.xml

@@ -2,7 +2,7 @@
 <navigation xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/nav_graph"
-    app:startDestination="@id/mainFragment">
+    app:startDestination="@id/startFragment">
 
     <fragment
         android:id="@+id/mainFragment"
@@ -11,6 +11,9 @@
         <action
             android:id="@+id/action_mainFragment_to_recorderBottomSheet"
             app:destination="@id/recorderBottomSheet" />
+        <argument
+            android:name="url"
+            app:argType="string" />
     </fragment>
     <dialog
         android:id="@+id/recorderBottomSheet"
@@ -20,4 +23,12 @@
             android:name="uri"
             app:argType="string" />
     </dialog>
+    <fragment
+        android:id="@+id/startFragment"
+        android:name="com.maxrocky.nativeview.fragment.StartFragment"
+        android:label="StartFragment" >
+        <action
+            android:id="@+id/action_startFragment_to_mainFragment"
+            app:destination="@id/mainFragment" />
+    </fragment>
 </navigation>
\ No newline at end of file

app/src/main/res/values/strings.xml

 <resources>
     <string name="app_name">NativeView</string>
+    <string name="url_label">网址:</string>
+    <string name="enter_button">启动</string>
 
     <string name="camera_denied">请到系统设置允许访问相机</string>
     <string name="record_audio_denied">请到系统设置允许访问麦克风</string>