Add explanation text to the ports config UI

Author: pimterry

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

@@ -6,6 +6,15 @@
         android:layout_height="match_parent"
         android:orientation="vertical">
 
+    <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="16dp"
+            android:layout_marginTop="8dp"
+            android:layout_marginRight="16dp"
+            android:layout_marginBottom="8dp"
+            android:text="@string/port_config_explanation" />
+
     <com.google.android.material.card.MaterialCardView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

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

@@ -11,22 +11,41 @@
     <string name="connected_status">Connected</string>
     <string name="failed_status">Oh no!</string>
 
-    <string name="disconnected_details">To intercept this device, start HTTP Toolkit on your computer, and activate Android interception there via QR code or using ADB.</string>
+    <string name="disconnected_details">
+        To intercept this device, start HTTP Toolkit on your computer, and activate Android
+        interception there via QR code or using ADB.
+    </string>
 
     <string name="connected_details">to %s on port %d</string>
     <string name="connected_tunnel_details">via ADB tunnel</string>
-    <string name="failed_details">We couldn\'t connect to HTTP Toolkit.\n\nIs it running, and connected to the same network as this device?</string>
+    <string name="failed_details">
+        We couldn\'t connect to HTTP Toolkit.\n\nIs it running, and connected to the same network
+        as this device?
+    </string>
 
     <string name="disabled_connection_status_heading">HTTPS interception disabled</string>
     <string name="user_connection_status_enabled_heading">User trust enabled</string>
     <string name="system_connection_status_disabled_heading">System trust disabled</string>
     <string name="system_connection_status_enabled_heading">System trust enabled</string>
     <string name="pre_v7_connection_status_enabled_heading">Certificate trusted</string>
 
-    <string name="none_connection_status_details">Your HTTP Toolkit certificate is not trusted on this device, so HTTPS traffic will only be available from apps that individually include and trust it.\n\nDisconnect and reconnect to rerun HTTPS certificate setup.</string>
-    <string name="user_connection_status_details">HTTPS interception will only be available for apps that are configured to trust user-installed certificates (<a href="https://httptoolkit.tech/docs/guides/android#intercepting-traffic-from-your-own-android-app">How?</a>)</string>
-    <string name="system_connection_status_details">Traffic from all intercepted applications will be available, except those using explicit certificate pinning.</string>
-    <string name="pre_v7_connection_status_details">Traffic from all intercepted applications will be available, except those using explicit certificate pinning.</string>
+    <string name="none_connection_status_details">
+        Your HTTP Toolkit certificate is not trusted on this device, so HTTPS traffic will only be
+        available from apps that individually include and trust it.\n\nDisconnect and reconnect to
+        rerun HTTPS certificate setup.
+    </string>
+    <string name="user_connection_status_details">
+        HTTPS interception will only be available for apps that are configured to trust user-installed certificates
+        (<a href="https://httptoolkit.tech/docs/guides/android#intercepting-traffic-from-your-own-android-app">How?</a>)
+    </string>
+    <string name="system_connection_status_details">
+        Traffic from all intercepted applications will
+        be available, except those using explicit certificate pinning.
+    </string>
+    <string name="pre_v7_connection_status_details">
+        Traffic from all intercepted applications will
+        be available, except those using explicit certificate pinning.
+    </string>
 
     <string name="scan_button">Scan QR code</string>
     <string name="reconnect_button">Reconnect</string>
@@ -52,4 +71,10 @@
     <string name="few_ports">%s port%s</string>
     <string name="add_port_prompt">Add another port</string>
     <string name="reset_to_default_ports">Reset to default ports</string>
+    <string name="port_config_explanation">
+        HTTP Toolkit sets the device\'s HTTP proxy configuration, to capture traffic from all apps
+        on any port, but some apps may ignore this.\n\nYou can add ports here to forcibly redirect
+        all outgoing traffic to that port, but be careful, as this will interfere with any non-HTTP
+        traffic on these ports.
+    </string>
 </resources>