安卓vpn开启抓包才弹出授权

android/app/src/main/kotlin/com/network/proxy/MainActivity.kt

@@ -2,7 +2,6 @@ package com.network.proxy
 
 import android.content.Intent
 import android.content.res.Configuration
-import android.net.VpnService
 import android.os.Bundle
 import com.network.proxy.plugin.AppLifecyclePlugin
 import com.network.proxy.plugin.PictureInPicturePlugin
@@ -16,7 +15,6 @@ class MainActivity : FlutterActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        prepareVpn()
     }
 
     override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
@@ -46,18 +44,20 @@ class MainActivity : FlutterActivity() {
         flutterEngine.plugins.add(lifecycleChannel)
     }
 
-    /**
-     * 准备vpn<br>
-     * 设备可能弹出连接vpn提示
-     */
-    private fun prepareVpn() {
-        val intent = VpnService.prepare(this@MainActivity)
-        if (intent != null) {
-            startActivityForResult(intent, VpnServicePlugin.REQUEST_CODE)
-        }
-    }
-
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        if (requestCode == VpnServicePlugin.REQUEST_CODE) {
+            if (resultCode == RESULT_OK) {
+                activity.startService(ProxyVpnService.startVpnIntent(activity))
+                return
+            }
+
+            val alertDialog = Intent(applicationContext, VpnAlertDialog::class.java)
+                .setAction("com.network.proxy.ProxyVpnService")
+            alertDialog.flags = Intent.FLAG_ACTIVITY_NEW_TASK
+            startActivity(alertDialog)
+            return
+        }
+
         super.onActivityResult(requestCode, resultCode, data)
     }
 

android/app/src/main/kotlin/com/network/proxy/ProxyVpnService.kt

@@ -10,6 +10,7 @@ import android.net.ProxyInfo
 import android.net.VpnService
 import android.os.Build
 import android.os.ParcelFileDescriptor
+import android.util.Log
 import androidx.core.app.NotificationCompat
 import com.network.proxy.vpn.socket.ProtectSocket
 import com.network.proxy.vpn.socket.ProtectSocketHolder
@@ -21,10 +22,6 @@ import com.network.proxy.vpn.socket.ProtectSocketHolder
 class ProxyVpnService : VpnService(), ProtectSocket {
     private var vpnInterface: ParcelFileDescriptor? = null
 
-    private var host: String? = null
-    private var port: Int = 0
-    private var allowApps: List<String>? = null
-
     companion object {
         const val MAX_PACKET_LEN = 1500
 
@@ -45,6 +42,10 @@ class ProxyVpnService : VpnService(), ProtectSocket {
 
         var isRunning = false
 
+        var host: String? = null
+        var port: Int = 0
+        var allowApps: ArrayList<String>? = null
+
         fun stopVpnIntent(context: Context): Intent {
             return Intent(context, ProxyVpnService::class.java).also {
                 it.action = ACTION_DISCONNECT
@@ -53,9 +54,9 @@ class ProxyVpnService : VpnService(), ProtectSocket {
 
         fun startVpnIntent(
             context: Context,
-            proxyHost: String? = null,
-            proxyPort: Int? = null,
-            allowApps: ArrayList<String>? = null
+            proxyHost: String? = host,
+            proxyPort: Int? = port,
+            allowApps: ArrayList<String>? = this.allowApps
         ): Intent {
             return Intent(context, ProxyVpnService::class.java).also {
                 it.putExtra(ProxyHost, proxyHost)
@@ -76,9 +77,9 @@ class ProxyVpnService : VpnService(), ProtectSocket {
             START_NOT_STICKY
         } else {
             connect(
-                intent.getStringExtra(ProxyHost) ?: this.host!!,
-                intent.getIntExtra(ProxyPort, this.port),
-                intent.getStringArrayListExtra(AllowApps) ?: this.allowApps
+                intent.getStringExtra(ProxyHost) ?: host!!,
+                intent.getIntExtra(ProxyPort, port),
+                intent.getStringArrayListExtra(AllowApps) ?: allowApps
             )
             START_STICKY
         }
@@ -93,10 +94,12 @@ class ProxyVpnService : VpnService(), ProtectSocket {
         isRunning = false
     }
 
-    private fun connect(proxyHost: String, proxyPort: Int, allowPackages: List<String>?) {
-        this.host = proxyHost
-        this.port = proxyPort
-        this.allowApps = allowPackages
+    private fun connect(proxyHost: String, proxyPort: Int, allowPackages: ArrayList<String>?) {
+        Log.i("ProxyVpnService", "startVpn $host:$port $allowApps")
+
+        host = proxyHost
+        port = proxyPort
+        allowApps = allowPackages
         vpnInterface = createVpnInterface(proxyHost, proxyPort, allowPackages)
         if (vpnInterface == null) {
             val alertDialog = Intent(applicationContext, VpnAlertDialog::class.java)

android/app/src/main/kotlin/com/network/proxy/plugin/VpnServicePlugin.kt

@@ -1,6 +1,6 @@
 package com.network.proxy.plugin
 
-import android.util.Log
+import android.net.VpnService
 import com.network.proxy.ProxyVpnService
 import io.flutter.embedding.engine.plugins.FlutterPlugin
 import io.flutter.plugin.common.MethodChannel
@@ -18,11 +18,16 @@ class VpnServicePlugin : AndroidFlutterPlugin() {
                 "isRunning" -> {
                     result.success(ProxyVpnService.isRunning)
                 }
+
                 "startVpn" -> {
                     val host = call.argument<String>("proxyHost")
                     val port = call.argument<Int>("proxyPort")
                     val allowApps = call.argument<ArrayList<String>>("allowApps")
-                    startVpn(host!!, port!!, allowApps)
+                    val prepareVpn = prepareVpn(host!!, port!!, allowApps)
+                    if (prepareVpn) {
+                        startVpn(host, port, allowApps)
+                    }
+                    result.success(prepareVpn)
                 }
 
                 "stopVpn" -> {
@@ -45,11 +50,26 @@ class VpnServicePlugin : AndroidFlutterPlugin() {
         }
     }
 
+    /**
+     * 准备vpn<br>
+     * 设备可能弹出连接vpn提示
+     */
+    private fun prepareVpn(host: String, port: Int, allowApps: ArrayList<String>?): Boolean {
+        val intent = VpnService.prepare(activity)
+        if (intent != null) {
+            ProxyVpnService.host = host
+            ProxyVpnService.port = port
+            ProxyVpnService.allowApps = allowApps
+            activity.startActivityForResult(intent, REQUEST_CODE)
+            return false
+        }
+        return true
+    }
+
     /**
      * 启动vpn服务
      */
     private fun startVpn(host: String, port: Int, allowApps: ArrayList<String>?) {
-        Log.i("com.network.proxy", "startVpn $host:$port $allowApps")
         val intent = ProxyVpnService.startVpnIntent(activity, host, port, allowApps)
         activity.startService(intent)
     }