added deleteCookie() and deleteCookies() on Android (#8)

.idea/workspace.xml

@@ -15,12 +15,8 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="9b41f7a2-a71e-4923-91fb-249d7815b3e7" name="Default" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/MyCookieManager.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/MyCookieManager.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/example/android/build.gradle" beforeDir="false" afterPath="$PROJECT_DIR$/example/android/build.gradle" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/example/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/example/lib/main.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/lib/flutter_inappbrowser.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/flutter_inappbrowser.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/ios/Classes/InAppBrowserWebViewController.swift" beforeDir="false" afterPath="$PROJECT_DIR$/ios/Classes/InAppBrowserWebViewController.swift" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/.dart_tool/" />
     <ignored path="$PROJECT_DIR$/.idea/" />
@@ -40,8 +36,8 @@
       <file leaf-file-name="flutter_inappbrowser.dart" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/lib/flutter_inappbrowser.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="542">
-              <caret line="1178" column="47" selection-start-line="1178" selection-start-column="38" selection-end-line="1178" selection-end-column="47" />
+            <state relative-caret-position="269">
+              <caret line="1179" column="42" lean-forward="true" selection-start-line="1179" selection-start-column="42" selection-end-line="1179" selection-end-column="42" />
               <folding>
                 <element signature="e#814#831#0" expanded="true" />
               </folding>
@@ -152,7 +148,7 @@
     </option>
   </component>
   <component name="ProjectFrameBounds">
-    <option name="x" value="2053" />
+    <option name="x" value="133" />
     <option name="y" value="23" />
     <option name="width" value="1787" />
     <option name="height" value="1057" />
@@ -349,8 +345,7 @@
     <servers />
   </component>
   <component name="ToolWindowManager">
-    <frame x="2053" y="23" width="1787" height="1057" extended-state="0" />
-    <editor active="true" />
+    <frame x="133" y="23" width="1787" height="1057" extended-state="0" />
     <layout>
       <window_info anchor="bottom" id="Android Profiler" order="7" show_stripe_button="false" />
       <window_info anchor="bottom" id="TODO" order="6" />
@@ -664,8 +659,8 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/lib/flutter_inappbrowser.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="542">
-          <caret line="1178" column="47" selection-start-line="1178" selection-start-column="38" selection-end-line="1178" selection-end-column="47" />
+        <state relative-caret-position="269">
+          <caret line="1179" column="42" lean-forward="true" selection-start-line="1179" selection-start-column="42" selection-end-line="1179" selection-end-column="42" />
           <folding>
             <element signature="e#814#831#0" expanded="true" />
           </folding>

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/MyCookieManager.java

@@ -3,13 +3,16 @@ package com.pichillilorenzo.flutter_inappbrowser;
 import android.os.Build;
 import android.util.Log;
 import android.webkit.CookieManager;
+import android.webkit.CookieSyncManager;
 import android.webkit.ValueCallback;
 
-import java.net.HttpCookie;
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.TimeZone;
 
 import io.flutter.plugin.common.MethodCall;
 import io.flutter.plugin.common.MethodChannel;
@@ -47,6 +50,16 @@ public class MyCookieManager implements MethodChannel.MethodCallHandler {
       case "getCookies":
         result.success(MyCookieManager.getCookies((String) call.argument("url")));
         break;
+      case "deleteCookie":
+        {
+          String url = (String) call.argument("url");
+          String name = (String) call.argument("name");
+          MyCookieManager.deleteCookie(url, name, result);
+        }
+        break;
+      case "deleteCookies":
+        MyCookieManager.deleteCookies(result);
+        break;
       default:
         result.notImplemented();
     }
@@ -71,7 +84,7 @@ public class MyCookieManager implements MethodChannel.MethodCallHandler {
       cookieValue += "; Path=" + path;
 
     if (expiresDate != null)
-      cookieValue += "; Max-Age=" + expiresDate.toString();
+      cookieValue += "; Expires=" + getCookieExpirationDate(expiresDate);
 
     if (isHTTPOnly != null && isHTTPOnly)
       cookieValue += "; HttpOnly";
@@ -88,10 +101,15 @@ public class MyCookieManager implements MethodChannel.MethodCallHandler {
           result.success(true);
         }
       });
+      cookieManager.flush();
     }
     else {
+      CookieSyncManager cookieSyncMngr = CookieSyncManager.createInstance(registrar.context());
+      cookieSyncMngr.startSync();
       cookieManager.setCookie(url, cookieValue);
       result.success(true);
+      cookieSyncMngr.stopSync();
+      cookieSyncMngr.sync();
     }
   }
 
@@ -115,4 +133,56 @@ public class MyCookieManager implements MethodChannel.MethodCallHandler {
 
   }
 
+  public static void deleteCookie(String url, String cookieName, final MethodChannel.Result result) {
+
+    String cookieValue = cookieName + "=; Expires=Thu, 01 Jan 1970 00:00:01 GMT;";
+
+    CookieManager cookieManager = CookieManager.getInstance();
+
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+      cookieManager.setCookie(url, cookieValue, new ValueCallback<Boolean>() {
+        @Override
+        public void onReceiveValue(Boolean aBoolean) {
+          result.success(true);
+        }
+      });
+      cookieManager.flush();
+    }
+    else {
+      CookieSyncManager cookieSyncMngr = CookieSyncManager.createInstance(registrar.context());
+      cookieSyncMngr.startSync();
+      cookieManager.setCookie(url, cookieValue);
+      result.success(true);
+      cookieSyncMngr.stopSync();
+      cookieSyncMngr.sync();
+    }
+  }
+
+  public static void deleteCookies(final MethodChannel.Result result) {
+    CookieManager cookieManager = CookieManager.getInstance();
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+      cookieManager.removeAllCookies(new ValueCallback<Boolean>() {
+        @Override
+        public void onReceiveValue(Boolean aBoolean) {
+          result.success(true);
+        }
+      });
+      cookieManager.flush();
+    }
+    else {
+      CookieSyncManager cookieSyncMngr = CookieSyncManager.createInstance(registrar.context());
+      cookieSyncMngr.startSync();
+      cookieManager.removeAllCookie();
+      result.success(true);
+      cookieSyncMngr.stopSync();
+      cookieSyncMngr.sync();
+    }
+  }
+
+  public static String getCookieExpirationDate(Long timestamp) {
+    final SimpleDateFormat sdf = new SimpleDateFormat("EEE, d MMM yyyy hh:mm:ss z");
+    sdf.setTimeZone(TimeZone.getTimeZone("GMT"));
+    return sdf.format(new Date(timestamp));
+  }
+
 }