android: add shortcuts

Fixes tailscale/tailscale#16415

Signed-off-by: Mahyar Mirrashed <mah.mirr@gmail.com>

android/src/main/AndroidManifest.xml

@@ -55,6 +55,10 @@
             <intent-filter>
                 <action android:name="android.service.quicksettings.action.QS_TILE_PREFERENCES" />
             </intent-filter>
+
+            <meta-data
+                android:name="android.app.shortcuts"
+                android:resource="@xml/shortcuts" />
         </activity>
         <activity
             android:name="ShareActivity"
@@ -89,6 +93,14 @@
                 <data android:mimeType="video/*" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".EnableVpnShortcutActivity"
+            android:exported="true"
+            android:theme="@android:style/Theme.Translucent.NoTitleBar" />
+        <activity
+            android:name=".DisableVpnShortcutActivity"
+            android:exported="true"
+            android:theme="@android:style/Theme.Translucent.NoTitleBar" />
 
         <receiver
             android:name="IPNReceiver"

android/src/main/java/com/tailscale/ipn/DisableVpnShortcutActivity.java

@@ -0,0 +1,27 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package com.tailscale.ipn;
+
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+/**
+ * Activity to disable the Tailscale VPN via app shortcut.
+ * Sends a broadcast to IPNReceiver and finishes immediately.
+ */
+public class DisableVpnShortcutActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Intent broadcastIntent = new Intent(IPNReceiver.INTENT_DISCONNECT_VPN);
+        broadcastIntent.setClass(this, IPNReceiver.class);
+        sendBroadcast(broadcastIntent);
+
+        finish();  // Close the activity immediately
+    }
+}

android/src/main/java/com/tailscale/ipn/EnableVpnShortcutActivity.java

@@ -0,0 +1,27 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package com.tailscale.ipn;
+
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+/**
+ * Activity to enable the Tailscale VPN via app shortcut.
+ * Sends a broadcast to IPNReceiver and finishes immediately.
+ */
+public class EnableVpnShortcutActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Intent broadcastIntent = new Intent(IPNReceiver.INTENT_CONNECT_VPN);
+        broadcastIntent.setClass(this, IPNReceiver.class);
+        sendBroadcast(broadcastIntent);
+
+        finish();  // Close the activity immediately
+    }
+}

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

@@ -347,4 +347,10 @@
     <string name="taildrop_directory_picker_info">What is taildrop?</string>
     <string name="taildrop_directory_picker_button">Open Directory Picker</string>
 
+    <!-- Strings for shortcuts -->
+    <string name="shortcut_enable_vpn_short">Enable VPN</string>
+    <string name="shortcut_enable_vpn_long">Enable Tailscale VPN</string>
+    <string name="shortcut_disable_vpn_short">Disable VPN</string>
+    <string name="shortcut_disable_vpn_long">Disable Tailscale VPN</string>
+
 </resources>

android/src/main/res/xml/shortcuts.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shortcuts xmlns:android="http://schemas.android.com/apk/res/android">
+    <shortcut
+        android:shortcutId="enable_vpn"
+        android:enabled="true"
+        android:icon="@mipmap/ic_launcher"
+        android:shortcutShortLabel="@string/shortcut_enable_vpn_short"
+        android:shortcutLongLabel="@string/shortcut_enable_vpn_long">
+        <intent
+            android:action="android.intent.action.VIEW"
+            android:targetPackage="com.tailscale.ipn"
+            android:targetClass="com.tailscale.ipn.EnableVpnShortcutActivity" />
+    </shortcut>
+    <shortcut
+        android:shortcutId="disable_vpn"
+        android:enabled="true"
+        android:icon="@mipmap/ic_launcher"
+        android:shortcutShortLabel="@string/shortcut_disable_vpn_short"
+        android:shortcutLongLabel="@string/shortcut_disable_vpn_long">
+        <intent
+            android:action="android.intent.action.VIEW"
+            android:targetPackage="com.tailscale.ipn"
+            android:targetClass="com.tailscale.ipn.DisableVpnShortcutActivity" />
+    </shortcut>
+</shortcuts>