android: Add a text field to display the devices network address

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.musicpd"
     android:installLocation="auto"
     android:versionCode="73"
     android:versionName="0.23.15">
@@ -12,6 +11,7 @@
         android:name="android.hardware.touchscreen"
         android:required="false" />
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.INTERNET" />

android/app/src/main/java/org/musicpd/NetworkUtil.java

@@ -0,0 +1,31 @@
+package org.musicpd;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.util.List;
+
+public class NetworkUtil {
+
+    public static String getDeviceIPV4Address(Context context) {
+        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        LinkProperties linkProperties = connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork());
+        if (linkProperties != null) {
+            List<LinkAddress> linkAddresses = linkProperties.getLinkAddresses();
+            for (LinkAddress address : linkAddresses) {
+                if (!address.getAddress().isLinkLocalAddress() && !address.getAddress().isLoopbackAddress()) {
+                    InetAddress address1 = address.getAddress();
+                    if (address1 instanceof Inet4Address) {
+                        return address1.getHostAddress();
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+}

android/app/src/main/java/org/musicpd/Settings.java

@@ -213,6 +213,10 @@ public class Settings extends Activity {
 		if (Preferences.getBoolean(this, Preferences.KEY_PAUSE_ON_HEADPHONES_DISCONNECT, false))
 			checkbox.setChecked(true);
 
+		TextView networkAddressTextView = (TextView) findViewById(R.id.networkAddress);
+		String deviceIPV4Address = NetworkUtil.getDeviceIPV4Address(this);
+		networkAddressTextView.setText(deviceIPV4Address);
+
 		super.onCreate(savedInstanceState);
 	}
 

android/app/src/main/res/drawable/baseline_wifi_24.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M1,9l2,2c4.97,-4.97 13.03,-4.97 18,0l2,-2C16.93,2.93 7.08,2.93 1,9zM9,17l3,3 3,-3c-1.65,-1.66 -4.34,-1.66 -6,0zM5,13l2,2c2.76,-2.76 7.24,-2.76 10,0l2,-2C15.14,9.14 8.87,9.14 5,13z"/>
+</vector>

android/app/src/main/res/layout/settings.xml

@@ -4,12 +4,34 @@
     android:layout_height="wrap_content"
     android:orientation="vertical">
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_vertical">
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:scaleType="center"
+            android:src="@drawable/baseline_wifi_24"
+            android:layout_margin="4dp"/>
+
+        <androidx.appcompat.widget.AppCompatTextView
+            android:id="@+id/networkAddress"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginRight="24sp"
+            android:gravity="center"
+            android:padding="4dp"
+            android:textSize="24sp" />
+    </LinearLayout>
+
     <ToggleButton
         android:id="@+id/run"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:textOn="@string/toggle_button_run_on"
+        android:textOff="@string/toggle_button_run_off"
-        android:textOff="@string/toggle_button_run_off" />
+        android:textOn="@string/toggle_button_run_on" />
 
     <CheckBox
         android:id="@+id/run_on_boot"