Modify to display placeholder when not connected network

ABVJE_UI_Android/src/jp/agentec/abook/abv/ui/home/activity/ChatWebviewActivity.java

@@ -32,8 +32,10 @@ import java.io.File;
 import java.util.List;
 import java.util.Objects;
 
+import jp.agentec.abook.abv.bl.acms.client.AcmsClient;
 import jp.agentec.abook.abv.bl.common.ABVEnvironment;
 import jp.agentec.abook.abv.bl.common.constant.ABookKeys;
+import jp.agentec.abook.abv.bl.common.exception.NetworkDisconnectedException;
 import jp.agentec.abook.abv.bl.common.log.Logger;
 import jp.agentec.abook.abv.bl.dto.PushMessageDto;
 import jp.agentec.abook.abv.cl.util.PreferenceUtil;
@@ -48,6 +50,8 @@ import jp.agentec.abook.abv.ui.common.util.AlertDialogUtil;
 import jp.agentec.abook.abv.ui.home.helper.ActivityHandlingHelper;
 import jp.agentec.abook.abv.ui.viewer.activity.ParentWebViewActivity;
 
+import static org.chromium.net.NetError.ERR_FAILED;
+
 /**
  * Created by AIS-NB-048 on 2019/07/31.
  */
@@ -57,6 +61,9 @@ public class ChatWebviewActivity extends ParentWebViewActivity {
     private String chatWebviewUrl;
 
     private final String TAG = "ChatWebviewActivity";
+
+    private final String NETWORK_ERROR_PLACE_HOLDER = "file:///android_asset/chat/public/index.html";
+
     //AISDevelop
     private JsInf jsInf = new JsInf();
 
@@ -81,18 +88,26 @@ public class ChatWebviewActivity extends ParentWebViewActivity {
         setContentView(R.layout.chat_webview);
         Intent intent = getIntent();
 
-        //ネットワークがない場合専用のページを表示。
-        if (ABVEnvironment.getInstance().networkAdapter.isNetworkConnected()) {
-            chatWebviewUrl = intent.getStringExtra("chatWebviewUrl");
-        } else {
-            chatWebviewUrl = "file:///android_asset/chat/public/index.html";
-        }
         sid = intent.getStringExtra("sid");
         roomId = intent.getLongExtra("roomId", 0);
         roomName = intent.getStringExtra("roomName");
         loginId = intent.getStringExtra("loginId");
         shopName = intent.getStringExtra("shopName");
 
+        //ネットワークがない場合専用のページを表示。
+        chatWebviewUrl = NETWORK_ERROR_PLACE_HOLDER;
+        if (ABVEnvironment.getInstance().networkAdapter.isNetworkConnected()) {
+            try {
+                if (AcmsClient.getInstance(ABVEnvironment.getInstance().networkAdapter).checkSid(sid)) {
+                    chatWebviewUrl = intent.getStringExtra("chatWebviewUrl");
+                }
+            } catch (Exception e) {
+                Logger.d("SID_CHECK_ERROR");
+            }
+        } else {
+            Logger.d("DEVICE_NOT_CONNECTED_NETWORK:");
+        }
+
         mChatWebView = findViewById(R.id.chatWebview2);
         mChatWebView.setOverScrollMode(View.OVER_SCROLL_NEVER);  //オーバースクロールしない。
         mChatWebView.setVerticalScrollBarEnabled(false); //スクロールバーを消す。
@@ -307,7 +322,15 @@ public class ChatWebviewActivity extends ParentWebViewActivity {
             @Override
             public void onReceivedError(WebView view, int errorCode,
                                         String description, String failingUrl) {
-                Logger.d("WEB_VIEW_TEST", "error code:" + errorCode + " - " + description);
+
+                if (errorCode == ERR_FAILED) {
+
+                    mChatWebView.removeView(view);
+                    view.removeAllViews();
+                    mChatWebView.reload();
+                    mChatWebView.loadUrl(NETWORK_ERROR_PLACE_HOLDER);
+                }
+                Logger.d("WEB_VIEW_ERROR", "error code:" + errorCode + " - " + description);
             }
 
             @Override