add WebView

app/src/main/AndroidManifest.xml

@@ -2,7 +2,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="de.weseng.wifiweatherstation">
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
+        android:usesCleartextTraffic="true"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -18,4 +21,4 @@
         </activity>
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/de/weseng/wifiweatherstation/MainActivity.java

@@ -1,13 +1,141 @@
 package de.weseng.wifiweatherstation;
 
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+import android.widget.Toast;
 
 public class MainActivity extends AppCompatActivity {
+    WebView myWebView;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        final ProgressDialog pd = ProgressDialog.show(MainActivity.this, "",
+                "Bitte warten, die Ansicht wird geladen...", true);
+
+        /* apply layout to the current screen */
         setContentView(R.layout.activity_main);
+
+        /* find WebView element by its id*/
+        if (savedInstanceState != null)
+            ((WebView) findViewById(R.id.webview)).restoreState(savedInstanceState);
+        myWebView = findViewById(R.id.webview);
+
+        /* create new settings for WebView element */
+        WebSettings webSettings = myWebView.getSettings();
+        webSettings.setJavaScriptEnabled(true);
+        webSettings.setLoadWithOverviewMode(true);
+        webSettings.setUseWideViewPort(true);
+        //webSettings.setSupportZoom(true);
+        //webSettings.setBuiltInZoomControls(true);
+
+        //myWebView.setBackgroundColor(getResources().getColor(R.color.black));
+        //myWebView.setBackgroundResource(Color.TRANSPARENT);
+        myWebView.setBackgroundColor(Color.TRANSPARENT);
+        myWebView.setPadding(0, 0, 0, 0);
+
+        myWebView.setWebViewClient(new WebViewClient() {
+            @Override
+            public void onPageStarted(WebView view, String url, Bitmap favicon) {
+                pd.show();
+            }
+
+            @Override
+            public void onPageFinished(WebView view, String url) {
+                pd.dismiss();
+                String webUrl = myWebView.getUrl();
+            }
+
+            @Override
+            public boolean shouldOverrideUrlLoading(WebView view, String url) {
+                /* will open a new web page in webview*/
+                view.loadUrl(url);
+                return true;
+            }
+
+            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
+                /*stop loading and show error.html page from assets folder*/
+                /*see: http://xbsoftware.com/blog/web-android-two-steps/ */
+                //view.stopLoading();
+                //view.loadUrl(String.format("file:///android_asset/error.html?code=%s&description=%s&url=%s", Uri.encode(String.valueOf(errorCode)), Uri.encode(description), Uri.encode(failingUrl)));
+                Toast.makeText(getApplicationContext(), description, Toast.LENGTH_SHORT).show();
+            }
+        });
+        /* set URL site */
+        if (savedInstanceState == null) {
+            ConnectivityManager connManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
+            NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
+            
+            if (mWifi.isConnected()) {
+                // loadUrl needs: AndroidManifest.xml <application android:usesCleartextTraffic="true"
+                if (mWifi.getExtraInfo() != null && mWifi.getExtraInfo().equals("\"FRITZ!Box Fon WLAN 7360\"")) {
+                    //Toast.makeText(getApplicationContext(), "intern", Toast.LENGTH_LONG).show();
+                    myWebView.loadUrl("http://192.168.178.5/site/wifi-weather-station/");
+                } else {
+                    //Toast.makeText(getApplicationContext(), "extern", Toast.LENGTH_LONG).show();
+                    myWebView.loadUrl("http://inetsrv.no-ip.org/site/wifi-weather-station/");
+                }
+            }
+        }
     }
+    @Override
+    public boolean onKeyDown(int keyCode, KeyEvent event) {
+        // Check if the key event was the Back button and if there's history
+        if ((keyCode == KeyEvent.KEYCODE_BACK) && myWebView.canGoBack()) {
+            myWebView.goBack();
+            return true;
+        }
+        // If it wasn't the Back key or there's no web page history, bubble up to the default
+        // system behavior (probably exit the activity)
+        return super.onKeyDown(keyCode, event);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        //getMenuInflater().inflate(R.menu.menu_main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.string.action_settings) {
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        myWebView.saveState(outState);
+    }
+
+    @Override
+    protected void onRestoreInstanceState(Bundle savedInstanceState) {
+        super.onRestoreInstanceState(savedInstanceState);
+        myWebView.restoreState(savedInstanceState);
+    }
+
 }

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

@@ -6,13 +6,14 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
+    <WebView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/webview"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"></WebView>
 
 </android.support.constraint.ConstraintLayout>

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

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">WiFi Weather Station</string>
+    <string name="action_settings">Einstellungen</string>
 </resources>