feat(android): hostname switching

src/android/com/ionicframework/cordova/webview/IonicWebView.java

@@ -12,6 +12,9 @@ public class IonicWebView extends CordovaPlugin  {
 
   public static final String WEBVIEW_PREFS_NAME = "WebViewSettings";
   public static final String CDV_SERVER_PATH = "serverBasePath";
+  public static final String CDV_HOSTNAME = "hostname";
+  public static final String CDV_SCHEME = "scheme";
+  public static final String CDV_PATHS = "paths";
 
   public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
 
@@ -33,6 +36,23 @@ public void run() {
       editor.putString(CDV_SERVER_PATH, path);
       editor.apply();
       return true;
+    } else if (action.equals("setOrigin")) {
+      final String hostname = args.getString(0);
+      final String scheme = args.getString(1);
+      final JSONArray paths = args.getJSONArray(2);
+      SharedPreferences prefs = cordova.getActivity().getApplicationContext().getSharedPreferences(WEBVIEW_PREFS_NAME,
+          Activity.MODE_PRIVATE);
+      SharedPreferences.Editor editor = prefs.edit();
+      editor.putString(CDV_HOSTNAME, hostname);
+      editor.putString(CDV_SCHEME, scheme);
+      editor.putString(CDV_PATHS, paths.toString());
+      editor.apply();
+      cordova.getActivity().runOnUiThread(new Runnable() {
+        public void run() {
+          ((IonicWebViewEngine) webView.getEngine()).setOrigin(hostname, scheme, paths);
+        }
+      });
+      return true;
     }
     return false;
   }

src/android/com/ionicframework/cordova/webview/IonicWebViewEngine.java

@@ -25,6 +25,8 @@
 import org.apache.cordova.engine.SystemWebViewClient;
 import org.apache.cordova.engine.SystemWebViewEngine;
 import org.apache.cordova.engine.SystemWebView;
+import java.util.ArrayList;
+import org.json.JSONArray;
 
 public class IonicWebViewEngine extends SystemWebViewEngine {
   public static final String TAG = "IonicWebViewEngine";
@@ -62,9 +64,26 @@ public void init(CordovaWebView parentWebView, CordovaInterface cordova, final C
 
     String hostname = preferences.getString("Hostname", "localhost");
     scheme = preferences.getString("Scheme", "http");
+
+    SharedPreferences prefs = cordova.getActivity().getApplicationContext()
+        .getSharedPreferences(IonicWebView.WEBVIEW_PREFS_NAME, Activity.MODE_PRIVATE);
+    String hostnamePref = prefs.getString(IonicWebView.CDV_HOSTNAME, null);
+    String schemePref = prefs.getString(IonicWebView.CDV_SCHEME, null);
+    JSONArray paths = null;
+    if (hostnamePref != null && schemePref != null) {
+      String pathsPref = prefs.getString(IonicWebView.CDV_PATHS, null);
+      try {
+        paths = new JSONArray(pathsPref);
+      } catch(Exception e) {
+        //invalid ignore
+      }
+      hostname = hostnamePref;
+      scheme = schemePref;
+    }
+
     CDV_LOCAL_SERVER = scheme + "://" + hostname;
 
-    localServer = new WebViewLocalServer(cordova.getActivity(), hostname, true, parser, scheme);
+    localServer = new WebViewLocalServer(cordova.getActivity(), hostname, true, parser, scheme, paths);
     localServer.hostAssets("www");
 
     webView.setWebViewClient(new ServerClient(this, parser));
@@ -75,7 +94,6 @@ public void init(CordovaWebView parentWebView, CordovaInterface cordova, final C
       int mode = preferences.getInteger("MixedContentMode", 0);
       settings.setMixedContentMode(mode);
     }
-    SharedPreferences prefs = cordova.getActivity().getApplicationContext().getSharedPreferences(IonicWebView.WEBVIEW_PREFS_NAME, Activity.MODE_PRIVATE);
     String path = prefs.getString(IonicWebView.CDV_SERVER_PATH, null);
     if (!isDeployDisabled() && !isNewBinary() && path != null && !path.isEmpty()) {
       setServerBasePath(path);
@@ -163,4 +181,18 @@ public void setServerBasePath(String path) {
   public String getServerBasePath() {
     return this.localServer.getBasePath();
   }
+
+  public void setOrigin(String hostname, String scheme, JSONArray paths) {
+
+    ConfigXmlParser parser = new ConfigXmlParser();
+    parser.parse(cordova.getActivity());
+    this.scheme = scheme;
+    localServer = new WebViewLocalServer(cordova.getActivity(), hostname, true, parser, scheme, paths);
+    localServer.hostAssets("www");
+    String url = webView.getUrl();
+    String oldHost = CDV_LOCAL_SERVER;
+    CDV_LOCAL_SERVER = scheme + "://" + hostname;
+    url = url.replace(oldHost, CDV_LOCAL_SERVER);
+    webView.loadUrl(url);
+  }
 }

src/android/com/ionicframework/cordova/webview/WebViewLocalServer.java

@@ -33,6 +33,9 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
+import java.util.ArrayList;
+
+import org.json.JSONArray;
 
 /**
  * Helper class meant to be used with the android.webkit.WebView class to enable hosting assets,
@@ -64,6 +67,7 @@ public class WebViewLocalServer {
   // Whether to route all requests to paths without extensions back to `index.html`
   private final boolean html5mode;
   private ConfigXmlParser parser;
+  private JSONArray ignorePaths;
 
   public String getAuthority() { return authority; }
 
@@ -163,13 +167,14 @@ public Uri getHttpsPrefix() {
     }
   }
 
-  WebViewLocalServer(Context context, String authority, boolean html5mode, ConfigXmlParser parser, String customScheme) {
+  WebViewLocalServer(Context context, String authority, boolean html5mode, ConfigXmlParser parser, String customScheme, JSONArray ignorePaths) {
     uriMatcher = new UriMatcher(null);
     this.html5mode = html5mode;
     this.parser = parser;
     this.protocolHandler = new AndroidProtocolHandler(context.getApplicationContext());
     this.authority = authority;
     this.customScheme = customScheme;
+    this.ignorePaths = ignorePaths;
   }
 
   private static Uri parseAndVerifyUrl(String url) {
@@ -223,6 +228,20 @@ public WebResourceResponse shouldInterceptRequest(Uri uri, WebResourceRequest re
       return null;
     }
 
+    if(this.ignorePaths != null) {
+      for (int i = 0; i < this.ignorePaths.length(); i++) {
+        try {
+          String path = this.ignorePaths.getString(i);
+
+          if (uri.getPath().contains(path)) {
+            return null;
+          }
+        } catch(Exception e) {
+          // Ingore
+        }
+      }
+    }
+
     if (isLocalFile(uri) || uri.getAuthority().equals(this.authority)) {
       Log.d("SERVER", "Handling local request: " + uri.toString());
       return handleLocalRequest(uri, handler, request);

src/www/util.js

@@ -24,6 +24,9 @@ var WebView = {
   },
   persistServerBasePath: function() {
     exec(null, null, 'IonicWebView', 'persistServerBasePath', []);
+  },
+  setOrigin: function(hostname, scheme, paths) {
+    exec(null, null, 'IonicWebView', 'setOrigin', [hostname, scheme, paths]);
   }
 }