Java 11 networkSecurityConfig

- upgrading gradle to Java 11
 - fix CleartextTraffic with networkSecurityConfig
 - fix port empty

app/build.gradle

@@ -21,8 +21,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
     }
 }
 

app/src/main/AndroidManifest.xml

@@ -7,12 +7,13 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
-        android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme">
+        android:theme="@style/AppTheme"
+        android:networkSecurityConfig="@xml/network_security_config">
+        <!--android:usesCleartextTraffic="true"-->
 
         <provider
             android:name="androidx.core.content.FileProvider"

app/src/main/java/com/localtransfer/Transfer.java

@@ -63,13 +63,21 @@ public class Transfer {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
 
         host = prefs.getString("host", null);
-        port = valueOf(prefs.getString("port", null));
         root = prefs.getString("root", null);
         local_storage = prefs.getString("local_storage", null);
         if(prefs.getBoolean("protocol", false))
             protocol = "https";
         else
             protocol = "http";
+        String portValue = prefs.getString("port", null);
+        if(portValue.equals("")){
+            if(protocol.equals("http"))
+                port = 80;
+            else if(protocol.equals("https"))
+                port = 443;
+        }
+        else
+            port = valueOf(portValue);
     }
 
     private URL checkRedirection(URL url) throws IOException {

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

@@ -25,7 +25,7 @@
     <string name="server_protocol">Use secure https</string>
     <string name="server_host_def">www.netdldata.net</string>
     <string name="server_port">Port</string>
-    <string name="server_port_def">80</string>
+    <string name="server_port_def"></string>
     <string name="server_root">Root</string>
     <string name="server_root_def">/transfer</string>
 

app/src/main/res/xml/network_security_config.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <domain-config cleartextTrafficPermitted="true">
+        <domain includeSubdomains="true">netdldata.net</domain>
+    </domain-config>
+</network-security-config>