Added some experimental changes to keep the webview on orientation changes

app/src/main/AndroidManifest.xml

@@ -54,6 +54,7 @@
             android:name=".activity.MainActivity"
             android:launchMode="singleInstance"
             android:windowSoftInputMode="adjustPan"
+            android:configChanges="keyboardHidden|orientation|screenSize"
             android:theme="@style/AppTheme.NoActionBar"
             android:label="@string/diaspora">
 

app/src/main/java/com/github/dfa/diaspora_android/activity/MainActivity.java

@@ -31,6 +31,7 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
+import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
@@ -52,6 +53,7 @@ import android.support.v7.widget.Toolbar;
 import android.util.Log;
 import android.view.Gravity;
 import android.view.KeyEvent;
+import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -64,6 +66,7 @@ import android.webkit.WebChromeClient;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.widget.EditText;
+import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.ProgressBar;
@@ -145,7 +148,9 @@ public class MainActivity extends AppCompatActivity
     @BindView(R.id.toolbar2)
     ActionMenuView toolbarBottom;
 
-    @BindView(R.id.webView)
+    @BindView(R.id.placeholder_webview)
+    FrameLayout webviewPlaceholder;
+
     ContextMenuWebView webView;
 
     @BindView(R.id.main__navigaion_view)
@@ -169,10 +174,10 @@ public class MainActivity extends AppCompatActivity
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        Log.d(App.TAG, "onCreate");
 
         // Bind UI
         setContentView(R.layout.main__activity);
-        ButterKnife.bind(this);
 
         app = (App) getApplication();
         appSettings = app.getSettings();
@@ -189,8 +194,23 @@ public class MainActivity extends AppCompatActivity
             resetProxy();
         }
 
-        setupWebView(savedInstanceState);
+        setupUI(savedInstanceState);
+    }
 
+    private void setupUI(Bundle savedInstanceState) {
+        boolean newWebView = (webView == null);
+        if(newWebView) {
+            Log.d(App.TAG, "Webview was null. Create new one.");
+            View webviewHolder = getLayoutInflater().inflate(R.layout.webview, null);
+            webView = (ContextMenuWebView) webviewHolder.findViewById(R.id.webView);
+            ((LinearLayout)webView.getParent()).removeView(webView);
+            setupWebView(savedInstanceState);
+        }
+        ButterKnife.bind(this);
+        if (webviewPlaceholder.getChildCount() != 0) {
+            webviewPlaceholder.removeAllViews();
+        }
+        webviewPlaceholder.addView(webView);
         // Setup toolbar
         setSupportActionBar(toolbarTop);
         getMenuInflater().inflate(R.menu.main__menu_bottom, toolbarBottom.getMenu());
@@ -231,8 +251,9 @@ public class MainActivity extends AppCompatActivity
         progressBar = (ProgressBar) findViewById(R.id.progressBar);
 
         String url = urls.getPodUrl();
-        if (savedInstanceState == null) {
+        if (newWebView) {
             if (WebHelper.isOnline(MainActivity.this)) {
+                Log.d(App.TAG, "setupUI: reload url");
                 webView.loadData("", "text/html", null);
                 webView.loadUrlNew(url);
             } else {
@@ -248,6 +269,24 @@ public class MainActivity extends AppCompatActivity
         handleIntent(getIntent());
     }
 
+    @Override
+    public void onConfigurationChanged(Configuration newConfig)
+    {
+        if (webView != null)
+        {
+            // Remove the WebView from the old placeholder
+            webviewPlaceholder.removeView(webView);
+        }
+
+        super.onConfigurationChanged(newConfig);
+
+        // Load the layout resource for the new configuration
+        setContentView(R.layout.main__activity);
+
+        // Reinitialize the UI
+        setupUI(null);
+    }
+
     private void setupWebView(Bundle savedInstanceState) {
 
         webSettings = webView.getSettings();
@@ -519,6 +558,7 @@ public class MainActivity extends AppCompatActivity
 
     @Override
     protected void onRestoreInstanceState(@NonNull Bundle savedInstanceState) {
+        Helpers.printBundle(savedInstanceState,"");
         super.onRestoreInstanceState(savedInstanceState);
         webView.restoreState(savedInstanceState);
     }

app/src/main/java/com/github/dfa/diaspora_android/util/Helpers.java

@@ -22,7 +22,9 @@ import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Bundle;
 import android.os.Environment;
+import android.util.Log;
 
 import com.github.dfa.diaspora_android.R;
 
@@ -31,8 +33,10 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.text.SimpleDateFormat;
+import java.util.Arrays;
 import java.util.Date;
 import java.util.Locale;
+import java.util.Objects;
 
 public class Helpers {
 
@@ -97,4 +101,22 @@ public class Helpers {
     public static String hexColorFromRessourceColor(Context context, int idColor){
         return "#" + Integer.toHexString(context.getResources().getColor(idColor) & 0x00ffffff);
     }
+
+    public static void printBundle(Bundle savedInstanceState, String k) {
+        if(savedInstanceState != null) {
+            for (String key : savedInstanceState.keySet()) {
+                Log.d("SAVED", key + " is a key in the bundle "+k);
+                Object bun = savedInstanceState.get(key);
+                if(bun != null) {
+                    if (bun instanceof Bundle) {
+                        printBundle((Bundle) bun, k + "." + key);
+                    } else if (bun instanceof byte[]) {
+                        Log.d("SAVED", "Key: "+k + "." + key+": "+ Arrays.toString((byte[])bun));
+                    } else {
+                        Log.d("SAVED", "Key: "+k + "." + key+": "+ bun.toString());
+                    }
+                }
+            }
+        }
+    }
 }

app/src/main/res/layout/main__content.xml

@@ -9,13 +9,13 @@
     tools:context=".activity.MainActivity"
     tools:showIn="@layout/main__app_bar">
 
-    <com.github.dfa.diaspora_android.ui.ContextMenuWebView
+    <FrameLayout
-        android:id="@+id/webView"
+        android:id="@+id/placeholder_webview"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:layout_alignParentEnd="true"
         android:layout_alignParentStart="true"
-        android:layout_centerVertical="true" />
+        android:layout_centerVertical="true"/>
 
     <ProgressBar
         android:id="@+id/progressBar"

app/src/main/res/layout/webview.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <com.github.dfa.diaspora_android.ui.ContextMenuWebView
+        android:id="@+id/webView"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:layout_alignParentEnd="true"
+        android:layout_alignParentStart="true"
+        android:layout_centerVertical="true" />
+
+</LinearLayout>