diff --git a/AirKoality/.idea/caches/build_file_checksums.ser b/AirKoality/.idea/caches/build_file_checksums.ser
new file mode 100644
index 0000000..69f7224
Binary files /dev/null and b/AirKoality/.idea/caches/build_file_checksums.ser differ
diff --git a/AirKoality/.idea/caches/gradle_models.ser b/AirKoality/.idea/caches/gradle_models.ser
index 5022a14..5a0ae1c 100644
Binary files a/AirKoality/.idea/caches/gradle_models.ser and b/AirKoality/.idea/caches/gradle_models.ser differ
diff --git a/AirKoality/.idea/workspace.xml b/AirKoality/.idea/workspace.xml
index e88187c..aaa9247 100644
--- a/AirKoality/.idea/workspace.xml
+++ b/AirKoality/.idea/workspace.xml
@@ -1,61 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="AndroidLayouts">
-    <shared>
-      <config />
-    </shared>
-  </component>
   <component name="ChangeListManager">
-    <list default="true" id="ab584861-2bab-4f5d-9af5-dd3eb1feca2b" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/.idea/codeStyles/Project.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_core_common_1_1_1_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_core_runtime_1_1_1_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_lifecycle_common_1_1_1_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_lifecycle_livedata_1_1_1_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_lifecycle_livedata_core_1_1_1_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_lifecycle_runtime_1_1_1_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__android_arch_lifecycle_viewmodel_1_1_1_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_animated_vector_drawable_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_appcompat_v7_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_asynclayoutinflater_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_cardview_v7_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_collections_28_0_0_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_coordinatorlayout_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_cursoradapter_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_customview_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_design_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_documentfile_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_drawerlayout_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_interpolator_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_loader_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_localbroadcastmanager_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_print_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_recyclerview_v7_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_slidingpanelayout_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_support_annotations_28_0_0_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_support_compat_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_support_core_ui_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_support_core_utils_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_support_fragment_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_support_vector_drawable_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_swiperefreshlayout_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_test_espresso_espresso_core_3_0_2_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_test_espresso_espresso_idling_resource_3_0_2_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_test_monitor_1_0_2_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_test_runner_1_0_2_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_transition_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_versionedparcelable_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_android_support_viewpager_28_0_0_aar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__javax_inject_javax_inject_1_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__junit_junit_4_12_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__net_sf_kxml_kxml2_2_3_0_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3_jar.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/vcs.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../.gitignore" beforeDir="false" afterPath="$PROJECT_DIR$/../.gitignore" afterDir="false" />
+    <list default="true" id="1973f2ea-4047-4d19-9b20-cc963935bad1" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/app/src/main/res/drawable-xxxhdpi/koala_logo.png" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/app/src/main/res/layout/activity_splash.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/caches/gradle_models.ser" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/caches/gradle_models.ser" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/build.gradle" beforeDir="false" afterPath="$PROJECT_DIR$/app/build.gradle" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/AndroidManifest.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/AndroidManifest.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/res/layout/activity_main.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/layout/activity_main.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/res/menu/main_bottom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/menu/main_bottom.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/res/values/strings.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/values/strings.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/res/values/styles.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/values/styles.xml" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -71,7 +29,7 @@
     </system>
   </component>
   <component name="FUSProjectUsageTrigger">
-    <session id="450998315">
+    <session id="-529986260">
       <usages-collector id="statistics.lifecycle.project">
         <counts>
           <entry key="project.open.time.0" value="1" />
@@ -80,24 +38,26 @@
       </usages-collector>
       <usages-collector id="statistics.file.extensions.open">
         <counts>
-          <entry key="gradle" value="1" />
-          <entry key="xml" value="4" />
+          <entry key="java" value="2" />
+          <entry key="xml" value="1" />
         </counts>
       </usages-collector>
       <usages-collector id="statistics.file.types.open">
         <counts>
-          <entry key="Groovy" value="1" />
-          <entry key="XML" value="4" />
+          <entry key="JAVA" value="2" />
+          <entry key="XML" value="1" />
         </counts>
       </usages-collector>
       <usages-collector id="statistics.file.extensions.edit">
         <counts>
-          <entry key="xml" value="27" />
+          <entry key="java" value="1" />
+          <entry key="xml" value="12" />
         </counts>
       </usages-collector>
       <usages-collector id="statistics.file.types.edit">
         <counts>
-          <entry key="XML" value="27" />
+          <entry key="JAVA" value="1" />
+          <entry key="XML" value="12" />
         </counts>
       </usages-collector>
     </session>
@@ -105,48 +65,33 @@
   <component name="FileEditorManager">
     <leaf>
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/src/main/res/menu/main_bottom.xml">
+        <entry file="file://$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="51">
-              <caret line="3" column="56" selection-start-line="3" selection-start-column="56" selection-end-line="3" selection-end-column="56" />
-              <folding>
-                <element signature="e#156#174#0" expanded="true" />
-              </folding>
+            <state relative-caret-position="357">
+              <caret line="29" column="16" selection-start-line="29" selection-start-column="16" selection-end-line="29" selection-end-column="16" />
             </state>
           </provider>
-          <provider editor-type-id="android-designer2" />
         </entry>
       </file>
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/src/main/AndroidManifest.xml">
-          <provider selected="true" editor-type-id="text-editor" />
-          <provider editor-type-id="android-manifest" />
-        </entry>
-      </file>
-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/src/main/res/layout/activity_main.xml">
+        <entry file="file://$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="289">
-              <caret line="17" column="17" lean-forward="true" selection-start-line="17" selection-start-column="17" selection-end-line="17" selection-end-column="17" />
+            <state relative-caret-position="68">
+              <caret line="12" column="13" selection-start-line="12" selection-start-column="13" selection-end-line="12" selection-end-column="13" />
             </state>
           </provider>
-          <provider editor-type-id="android-designer2" />
         </entry>
       </file>
       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/app/build.gradle">
+        <entry file="file://$PROJECT_DIR$/app/src/main/res/layout/activity_main.xml">
+          <provider editor-type-id="android-designer2" />
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="459">
-              <caret line="27" column="1" lean-forward="true" selection-start-line="27" selection-start-column="1" selection-end-line="27" selection-end-column="1" />
+            <state relative-caret-position="306">
+              <caret line="18" column="48" lean-forward="true" selection-start-line="18" selection-start-column="48" selection-end-line="18" selection-end-column="48" />
             </state>
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/src/main/res/values/strings.xml">
-          <provider selected="true" editor-type-id="text-editor" />
-        </entry>
-      </file>
     </leaf>
   </component>
   <component name="Git.Settings">
@@ -155,7 +100,7 @@
   <component name="IdeDocumentHistory">
     <option name="CHANGED_PATHS">
       <list>
-        <option value="$PROJECT_DIR$/app/src/main/res/menu/main_bottom.xml" />
+        <option value="$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java" />
         <option value="$PROJECT_DIR$/app/src/main/res/layout/activity_main.xml" />
       </list>
     </option>
@@ -172,8 +117,6 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="Scope" />
-      <pane id="PackagesPane" />
       <pane id="AndroidView">
         <subPane>
           <expand>
@@ -184,12 +127,13 @@
             <path>
               <item name="AirKoality" type="1abcf292:AndroidViewProjectNode" />
               <item name="app" type="feadf853:AndroidModuleNode" />
-              <item name="manifests" type="f94875db:AndroidManifestsGroupNode" />
+              <item name="java" type="edd41e36:AndroidSourceTypeNode" />
             </path>
             <path>
               <item name="AirKoality" type="1abcf292:AndroidViewProjectNode" />
               <item name="app" type="feadf853:AndroidModuleNode" />
               <item name="java" type="edd41e36:AndroidSourceTypeNode" />
+              <item name="activity" type="cbb59c9e:AndroidPsiDirectoryNode" />
             </path>
             <path>
               <item name="AirKoality" type="1abcf292:AndroidViewProjectNode" />
@@ -202,27 +146,19 @@
               <item name="res" type="d4f16f75:AndroidResFolderNode" />
               <item name="layout" type="ddeffd01:AndroidResFolderTypeNode" />
             </path>
-            <path>
-              <item name="AirKoality" type="1abcf292:AndroidViewProjectNode" />
-              <item name="app" type="feadf853:AndroidModuleNode" />
-              <item name="res" type="d4f16f75:AndroidResFolderNode" />
-              <item name="menu" type="ddeffd01:AndroidResFolderTypeNode" />
-            </path>
-            <path>
-              <item name="AirKoality" type="1abcf292:AndroidViewProjectNode" />
-              <item name="app" type="feadf853:AndroidModuleNode" />
-              <item name="res" type="d4f16f75:AndroidResFolderNode" />
-              <item name="values" type="ddeffd01:AndroidResFolderTypeNode" />
-            </path>
           </expand>
           <select />
         </subPane>
       </pane>
+      <pane id="Scope" />
       <pane id="ProjectPane" />
+      <pane id="PackagesPane" />
     </panes>
   </component>
   <component name="PropertiesComponent">
     <property name="android.sdk.path" value="$USER_HOME$/AppData/Local/Android/Sdk" />
+    <property name="device.picker.selection" value="Pixel_2_API_28" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
   </component>
   <component name="RunDashboard">
     <option name="ruleStates">
@@ -236,16 +172,77 @@
       </list>
     </option>
   </component>
+  <component name="RunManager">
+    <configuration default="true" type="AndroidJUnit" factoryName="Android JUnit">
+      <option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="app" type="AndroidRunConfigurationType" factoryName="Android App" activateToolWindowBeforeRun="false">
+      <module name="app" />
+      <option name="DEPLOY" value="true" />
+      <option name="DEPLOY_APK_FROM_BUNDLE" value="false" />
+      <option name="DEPLOY_AS_INSTANT" value="false" />
+      <option name="ARTIFACT_NAME" value="" />
+      <option name="PM_INSTALL_OPTIONS" value="" />
+      <option name="DYNAMIC_FEATURES_DISABLED_LIST" value="" />
+      <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+      <option name="MODE" value="default_activity" />
+      <option name="CLEAR_LOGCAT" value="false" />
+      <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+      <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+      <option name="FORCE_STOP_RUNNING_APP" value="true" />
+      <option name="TARGET_SELECTION_MODE" value="SHOW_DIALOG" />
+      <option name="USE_LAST_SELECTED_DEVICE" value="false" />
+      <option name="PREFERRED_AVD" value="" />
+      <option name="SELECTED_CLOUD_MATRIX_CONFIGURATION_ID" value="-1" />
+      <option name="SELECTED_CLOUD_MATRIX_PROJECT_ID" value="" />
+      <option name="DEBUGGER_TYPE" value="Auto" />
+      <Auto>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Auto>
+      <Hybrid>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Hybrid>
+      <Java />
+      <Native>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Native>
+      <Profilers>
+        <option name="ADVANCED_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_CONFIGURATION_NAME" value="Sample Java Methods" />
+      </Profilers>
+      <option name="DEEP_LINK" value="" />
+      <option name="ACTIVITY_CLASS" value="" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+  </component>
   <component name="SvnConfiguration">
     <configuration />
   </component>
   <component name="TaskManager">
     <task active="true" id="Default" summary="Default task">
-      <changelist id="ab584861-2bab-4f5d-9af5-dd3eb1feca2b" name="Default Changelist" comment="" />
-      <created>1551458324467</created>
+      <changelist id="1973f2ea-4047-4d19-9b20-cc963935bad1" name="Default Changelist" comment="" />
+      <created>1551463132646</created>
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
-      <updated>1551458324467</updated>
+      <updated>1551463132646</updated>
     </task>
     <servers />
   </component>
@@ -253,7 +250,7 @@
     <frame x="-8" y="-8" width="1936" height="1056" extended-state="6" />
     <editor active="true" />
     <layout>
-      <window_info content_ui="combo" id="Project" visible="true" weight="0.17803837" />
+      <window_info content_ui="combo" id="Project" visible="true" weight="0.32995737" />
       <window_info id="Structure" side_tool="true" />
       <window_info id="Build Variants" side_tool="true" />
       <window_info id="Image Layers" />
@@ -261,55 +258,46 @@
       <window_info id="Capture Tool" />
       <window_info id="Favorites" side_tool="true" />
       <window_info id="Captures" order="0" side_tool="true" weight="0.25" />
+      <window_info anchor="bottom" id="Run" />
       <window_info anchor="bottom" id="Logcat" />
       <window_info anchor="bottom" id="Version Control" show_stripe_button="false" />
       <window_info anchor="bottom" id="TODO" />
-      <window_info anchor="bottom" id="Android Profiler" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Android Profiler" />
+      <window_info anchor="bottom" id="Debug" />
       <window_info anchor="bottom" id="Terminal" />
       <window_info anchor="bottom" id="Event Log" side_tool="true" />
-      <window_info active="true" anchor="bottom" id="Build" visible="true" weight="0.329718" />
+      <window_info anchor="bottom" id="Build" visible="true" weight="0.329718" />
       <window_info anchor="right" id="Device File Explorer" side_tool="true" />
       <window_info anchor="right" id="Capture Analysis" />
       <window_info anchor="right" id="Gradle" />
       <window_info anchor="right" id="Theme Preview" />
       <window_info anchor="right" id="Palette&#9;" />
-      <window_info anchor="right" id="Preview" weight="0.32995737" />
+      <window_info active="true" anchor="right" id="Preview" visible="true" weight="0.32995737" />
     </layout>
   </component>
   <component name="VcsContentAnnotationSettings">
     <option name="myLimit" value="2678400000" />
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/app/src/main/res/values/strings.xml">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/src/main/res/menu/main_bottom.xml">
+    <entry file="file://$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="51">
-          <caret line="3" column="56" selection-start-line="3" selection-start-column="56" selection-end-line="3" selection-end-column="56" />
-          <folding>
-            <element signature="e#156#174#0" expanded="true" />
-          </folding>
+        <state relative-caret-position="68">
+          <caret line="12" column="13" selection-start-line="12" selection-start-column="13" selection-end-line="12" selection-end-column="13" />
         </state>
       </provider>
-      <provider editor-type-id="android-designer2" />
     </entry>
-    <entry file="file://$PROJECT_DIR$/app/src/main/AndroidManifest.xml">
-      <provider selected="true" editor-type-id="text-editor" />
-      <provider editor-type-id="android-manifest" />
+    <entry file="file://$PROJECT_DIR$/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="357">
+          <caret line="29" column="16" selection-start-line="29" selection-start-column="16" selection-end-line="29" selection-end-column="16" />
+        </state>
+      </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/app/src/main/res/layout/activity_main.xml">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="289">
-          <caret line="17" column="17" lean-forward="true" selection-start-line="17" selection-start-column="17" selection-end-line="17" selection-end-column="17" />
-        </state>
-      </provider>
       <provider editor-type-id="android-designer2" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/build.gradle">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="459">
-          <caret line="27" column="1" lean-forward="true" selection-start-line="27" selection-start-column="1" selection-end-line="27" selection-end-column="1" />
+        <state relative-caret-position="306">
+          <caret line="18" column="48" lean-forward="true" selection-start-line="18" selection-start-column="48" selection-end-line="18" selection-end-column="48" />
         </state>
       </provider>
     </entry>
diff --git a/AirKoality/app/build.gradle b/AirKoality/app/build.gradle
index eeca0df..d0f98bf 100644
--- a/AirKoality/app/build.gradle
+++ b/AirKoality/app/build.gradle
@@ -16,10 +16,14 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support:design:28.0.0'
     testImplementation 'junit:junit:4.12'
diff --git a/AirKoality/app/src/main/AndroidManifest.xml b/AirKoality/app/src/main/AndroidManifest.xml
index 9627cc3..e4fbb83 100644
--- a/AirKoality/app/src/main/AndroidManifest.xml
+++ b/AirKoality/app/src/main/AndroidManifest.xml
@@ -13,9 +13,17 @@
 
         <activity android:name=".ui.activity.MainActivity">
 
+
+    </activity>
+
+
+        <activity android:name=".ui.activity.SplashActivity"
+            android:noHistory="true"
+            android:theme="@style/NoToolbar"
+            >
             <intent-filter>
-                    <action android:name="android.intent.action.MAIN"/>
-                    <category android:name="android.intent.category.LAUNCHER"/>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
 
         </activity>
diff --git a/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java b/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java
index 42da64f..c01480a 100644
--- a/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java
+++ b/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/MainActivity.java
@@ -1,15 +1,32 @@
 package at.fhj.airkoality.ui.activity;
 
 import android.os.Bundle;
+import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.design.widget.BottomNavigationView;
 import android.support.v7.app.AppCompatActivity;
+import android.view.MenuItem;
+import android.widget.TextView;
 
 import at.fhj.airkoality.R;
 
 public class MainActivity extends AppCompatActivity {
+    private TextView tvTest;
+    private BottomNavigationView bottomNavigationView;
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        tvTest = findViewById(R.id.tvTest);
+        bottomNavigationView = findViewById(R.id.bnvMain);
+
+        bottomNavigationView.setOnNavigationItemSelectedListener(menuItem -> {
+            tvTest.setText(menuItem.getTitle());
+            return true;
+        });
+
+
     }
 }
diff --git a/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java b/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java
new file mode 100644
index 0000000..4966864
--- /dev/null
+++ b/AirKoality/app/src/main/java/at/fhj/airkoality/ui/activity/SplashActivity.java
@@ -0,0 +1,37 @@
+package at.fhj.airkoality.ui.activity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.support.annotation.Nullable;
+import android.support.design.widget.BottomNavigationView;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.TextView;
+
+import at.fhj.airkoality.R;
+
+public class SplashActivity extends AppCompatActivity {
+
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_splash);
+
+        Handler handler = new Handler();
+
+        handler.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                Intent intent = new Intent(SplashActivity.this, MainActivity.class);
+                startActivity(intent);
+
+            }
+        },5000);
+
+
+
+
+
+    }
+}
diff --git a/AirKoality/app/src/main/res/drawable-xxxhdpi/koala_logo.png b/AirKoality/app/src/main/res/drawable-xxxhdpi/koala_logo.png
new file mode 100644
index 0000000..91bc7d5
Binary files /dev/null and b/AirKoality/app/src/main/res/drawable-xxxhdpi/koala_logo.png differ
diff --git a/AirKoality/app/src/main/res/layout/activity_main.xml b/AirKoality/app/src/main/res/layout/activity_main.xml
index 3363373..9ecabbb 100644
--- a/AirKoality/app/src/main/res/layout/activity_main.xml
+++ b/AirKoality/app/src/main/res/layout/activity_main.xml
@@ -5,14 +5,25 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 <TextView
+    android:id="@+id/tvTest"
     android:text="Hallo Welt"
     android:layout_centerInParent="true"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content" />
 
     <android.support.design.widget.BottomNavigationView
+        android:id="@+id/bnvMain"
         app:menu="@menu/main_bottom"
+        app:itemTextColor="@android:color/white"
+        app:itemIconTint="@android:color/white"
+        android:background="@color/primaryColor"
+        android:layout_alignParentBottom="true"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"></android.support.design.widget.BottomNavigationView>
+        android:layout_height="wrap_content"
+         >
+
+
+    </android.support.design.widget.BottomNavigationView>
+
 
 </RelativeLayout>
\ No newline at end of file
diff --git a/AirKoality/app/src/main/res/layout/activity_splash.xml b/AirKoality/app/src/main/res/layout/activity_splash.xml
new file mode 100644
index 0000000..d816163
--- /dev/null
+++ b/AirKoality/app/src/main/res/layout/activity_splash.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:background="@color/primaryColor"
+    android:gravity="center"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ImageView
+        android:src="@drawable/koala_logo"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+    <TextView
+        android:text="@string/app_name"
+        android:textSize="30sp"
+        android:textColor="@android:color/white"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/AirKoality/app/src/main/res/menu/main_bottom.xml b/AirKoality/app/src/main/res/menu/main_bottom.xml
index 622f0fc..118a882 100644
--- a/AirKoality/app/src/main/res/menu/main_bottom.xml
+++ b/AirKoality/app/src/main/res/menu/main_bottom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:id="@+id/location" android:title="@string/location" android:icon="@drawable/baseline_location_city_white_24"/>
-    <item android:id="@+id/map" android:title="@string/map" android:icon="@drawable/baseline_location_on_white_24"
+    <item android:id="@+id/map" android:title="@string/map" android:icon="@drawable/baseline_location_on_white_24"/>
 </menu>
\ No newline at end of file
diff --git a/AirKoality/app/src/main/res/values/strings.xml b/AirKoality/app/src/main/res/values/strings.xml
index becbaf9..9eaca32 100644
--- a/AirKoality/app/src/main/res/values/strings.xml
+++ b/AirKoality/app/src/main/res/values/strings.xml
@@ -2,4 +2,5 @@
     <string name="app_name">AirKoality-lab</string>
     <string name="location">Location</string>
     <string name="map">Map</string>
+    <string name="airkoality">AirKoality</string>
 </resources>
diff --git a/AirKoality/app/src/main/res/values/styles.xml b/AirKoality/app/src/main/res/values/styles.xml
index 8969d5f..347214d 100644
--- a/AirKoality/app/src/main/res/values/styles.xml
+++ b/AirKoality/app/src/main/res/values/styles.xml
@@ -8,4 +8,13 @@
         <item name="colorAccent">@color/secondaryColor</item>
     </style>
 
+
+    <!-- Base application theme. -->
+    <style name="NoToolbar" parent="Theme.AppCompat.Light.NoActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/primaryColor</item>
+        <item name="colorPrimaryDark">@color/primaryDarkColor</item>
+        <item name="colorAccent">@color/secondaryColor</item>
+    </style>
+
 </resources>