From 2aec8ff4c41d178ea9804f7b6eff343c726be015 Mon Sep 17 00:00:00 2001
From: Lucas Fernandes Nogueira <lucas@tauri.app>
Date: Tue, 24 Jun 2025 16:43:01 -0300
Subject: [PATCH] feat(opener): add `inAppBrowser` option for iOS and Android
 (#2803)

---
 .changes/in-app-browser.md                    |  6 +++++
 examples/api/src-tauri/capabilities/base.json |  9 +++++++
 examples/api/src/views/Opener.svelte          |  6 +++--
 plugins/opener/android/build.gradle.kts       |  1 +
 .../android/src/main/java/OpenerPlugin.kt     | 26 ++++++++++++++-----
 plugins/opener/guest-js/index.ts              |  4 ++-
 plugins/opener/ios/Sources/OpenerPlugin.swift | 24 +++++++++++++----
 plugins/opener/src/lib.rs                     | 11 +++++---
 8 files changed, 69 insertions(+), 18 deletions(-)
 create mode 100644 .changes/in-app-browser.md

diff --git a/.changes/in-app-browser.md b/.changes/in-app-browser.md
new file mode 100644
index 00000000..69ea9167
--- /dev/null
+++ b/.changes/in-app-browser.md
@@ -0,0 +1,6 @@
+---
+"opener": patch:feat
+"opener-js": patch:feat
+---
+
+Add `inAppBrowser` option to open URLs in an in-app browser on Android and iOS.
diff --git a/examples/api/src-tauri/capabilities/base.json b/examples/api/src-tauri/capabilities/base.json
index cefc4d8a..1fb9f244 100644
--- a/examples/api/src-tauri/capabilities/base.json
+++ b/examples/api/src-tauri/capabilities/base.json
@@ -83,6 +83,15 @@
     },
     "store:default",
     "opener:default",
+    {
+      "identifier": "opener:allow-open-url",
+      "allow": [
+        {
+          "url": "https://*",
+          "app": "inAppBrowser"
+        }
+      ]
+    },
     {
       "identifier": "opener:allow-open-path",
       "allow": [{ "path": "$APPDATA" }, { "path": "$APPDATA/**" }]
diff --git a/examples/api/src/views/Opener.svelte b/examples/api/src/views/Opener.svelte
index eca634ac..e20e7658 100644
--- a/examples/api/src/views/Opener.svelte
+++ b/examples/api/src/views/Opener.svelte
@@ -1,10 +1,12 @@
 <script>
   import * as opener from '@tauri-apps/plugin-opener'
+  import { platform } from '@tauri-apps/plugin-os'
 
   export let onMessage
 
-  let url = ''
-  let urlProgram = ''
+  let url = 'https://tauri.app'
+  let urlProgram =
+    platform() === 'ios' || platform() === 'android' ? 'inAppBrowser' : ''
   function openUrl() {
     opener.openUrl(url, urlProgram ? urlProgram : undefined).catch(onMessage)
   }
diff --git a/plugins/opener/android/build.gradle.kts b/plugins/opener/android/build.gradle.kts
index 9dcce212..49ddbe22 100644
--- a/plugins/opener/android/build.gradle.kts
+++ b/plugins/opener/android/build.gradle.kts
@@ -35,5 +35,6 @@ android {
 dependencies {
     implementation("androidx.core:core-ktx:1.9.0")
     implementation("com.fasterxml.jackson.core:jackson-databind:2.15.3")
+    implementation("androidx.browser:browser:1.8.0")
     implementation(project(":tauri-android"))
 }
diff --git a/plugins/opener/android/src/main/java/OpenerPlugin.kt b/plugins/opener/android/src/main/java/OpenerPlugin.kt
index 16b76032..a65a2f52 100644
--- a/plugins/opener/android/src/main/java/OpenerPlugin.kt
+++ b/plugins/opener/android/src/main/java/OpenerPlugin.kt
@@ -6,22 +6,36 @@ package app.tauri.opener
 
 import android.app.Activity
 import android.content.Intent
-import android.net.Uri
+import androidx.browser.customtabs.CustomTabsIntent
 import app.tauri.annotation.Command
 import app.tauri.annotation.TauriPlugin
 import app.tauri.plugin.Invoke
 import app.tauri.plugin.Plugin
-import java.io.File
+import androidx.core.net.toUri
+import app.tauri.annotation.InvokeArg
+
+@InvokeArg
+class OpenArgs {
+  lateinit var url: String
+  var with: String? = null
+}
 
 @TauriPlugin
 class OpenerPlugin(private val activity: Activity) : Plugin(activity) {
     @Command
     fun open(invoke: Invoke) {
         try {
-            val url = invoke.parseArgs(String::class.java)
-            val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
-            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-            activity.applicationContext?.startActivity(intent)
+            val args = invoke.parseArgs(OpenArgs::class.java)
+
+            if (args.with == "inAppBrowser") {
+                val builder = CustomTabsIntent.Builder()
+                val intent = builder.build()
+                intent.launchUrl(activity, args.url.toUri())
+            } else {
+                val intent = Intent(Intent.ACTION_VIEW, args.url.toUri())
+                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                activity.applicationContext?.startActivity(intent)
+            }
             invoke.resolve()
         } catch (ex: Exception) {
             invoke.reject(ex.message)
diff --git a/plugins/opener/guest-js/index.ts b/plugins/opener/guest-js/index.ts
index 5705c722..b73ef538 100644
--- a/plugins/opener/guest-js/index.ts
+++ b/plugins/opener/guest-js/index.ts
@@ -35,12 +35,14 @@ import { invoke } from '@tauri-apps/api/core'
  *
  * @param url The URL to open.
  * @param openWith The app to open the URL with. If not specified, defaults to the system default application for the specified url type.
+ * On mobile, `openWith` can be provided as `inAppBrowser` to open the URL in an in-app browser. Otherwise, it will open the URL in the system default browser.
  *
  * @since 2.0.0
  */
 export async function openUrl(
   url: string | URL,
-  openWith?: string
+  // eslint-disable-next-line @typescript-eslint/no-redundant-type-constituents
+  openWith?: 'inAppBrowser' | string
 ): Promise<void> {
   await invoke('plugin:opener|open_url', {
     url,
diff --git a/plugins/opener/ios/Sources/OpenerPlugin.swift b/plugins/opener/ios/Sources/OpenerPlugin.swift
index 81ff76b4..2311a3b1 100644
--- a/plugins/opener/ios/Sources/OpenerPlugin.swift
+++ b/plugins/opener/ios/Sources/OpenerPlugin.swift
@@ -3,21 +3,35 @@
 // SPDX-License-Identifier: MIT
 
 import Foundation
+import SafariServices
 import SwiftRs
 import Tauri
 import UIKit
 import WebKit
 
+struct OpenArgs: Decodable {
+  let url: String
+  let with: String?
+}
+
 class OpenerPlugin: Plugin {
   @objc public func open(_ invoke: Invoke) throws {
     do {
-      let urlString = try invoke.parseArgs(String.self)
-      if let url = URL(string: urlString) {
-        if #available(iOS 10, *) {
-          UIApplication.shared.open(url, options: [:])
+      let args = try invoke.parseArgs(OpenArgs.self)
+      if let url = URL(string: args.url) {
+        if args.with == "inAppBrowser" {
+          DispatchQueue.main.async {
+            let safariVC = SFSafariViewController(url: url)
+            self.manager.viewController?.present(safariVC, animated: true)
+          }
         } else {
-          UIApplication.shared.openURL(url)
+          if #available(iOS 10, *) {
+            UIApplication.shared.open(url, options: [:])
+          } else {
+            UIApplication.shared.openURL(url)
+          }
         }
+
       }
       invoke.resolve()
     } catch {
diff --git a/plugins/opener/src/lib.rs b/plugins/opener/src/lib.rs
index 23a27a33..6bf0e5b2 100644
--- a/plugins/opener/src/lib.rs
+++ b/plugins/opener/src/lib.rs
@@ -55,7 +55,7 @@ impl<R: Runtime> Opener<R> {
     ///
     /// ## Platform-specific:
     ///
-    /// - **Android / iOS**: Always opens using default program.
+    /// - **Android / iOS**: Always opens using default program, unless `with` is provided as "inAppBrowser".
     #[cfg(desktop)]
     pub fn open_url(&self, url: impl Into<String>, with: Option<impl Into<String>>) -> Result<()> {
         crate::open::open(url.into(), with.map(Into::into))
@@ -78,11 +78,14 @@ impl<R: Runtime> Opener<R> {
     ///
     /// ## Platform-specific:
     ///
-    /// - **Android / iOS**: Always opens using default program.
+    /// - **Android / iOS**: Always opens using default program, unless `with` is provided as "inAppBrowser".
     #[cfg(mobile)]
-    pub fn open_url(&self, url: impl Into<String>, _with: Option<impl Into<String>>) -> Result<()> {
+    pub fn open_url(&self, url: impl Into<String>, with: Option<impl Into<String>>) -> Result<()> {
         self.mobile_plugin_handle
-            .run_mobile_plugin("open", url.into())
+            .run_mobile_plugin(
+                "open",
+                serde_json::json!({ "url": url.into(), "with": with.map(Into::into) }),
+            )
             .map_err(Into::into)
     }