Implemented Settings screen (WIP)

app/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
     buildToolsVersion '27.0.3'
     defaultConfig {
         applicationId "de.sebse.fuplanner"
         minSdkVersion 15
-        targetSdkVersion 27
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -27,23 +27,24 @@ android {
 
 
 dependencies {
-    implementation 'com.android.support:recyclerview-v7:27.1.1'
+    implementation 'com.android.support:recyclerview-v7:28.0.0-beta01'
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support:design:27.1.1'
+    implementation 'com.android.support:appcompat-v7:28.0.0-beta01'
+    implementation 'com.android.support:preference-v7:28.0.0-beta01'
+    implementation 'com.android.support:design:28.0.0-beta01'
     implementation 'com.android.support.constraint:constraint-layout:1.1.2'
     implementation 'com.android.volley:volley:1.0.0'
     //noinspection GradleDependency
     implementation 'com.google.android.gms:play-services-auth:15.0.0'
-    implementation 'com.android.support:support-v4:27.1.1'
+    implementation 'com.android.support:support-v4:28.0.0-beta01'
     testImplementation 'junit:junit:4.12'
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:appcompat-v7:28.0.0-beta01'
     implementation 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'
-    implementation 'com.android.support:support-v4:27.1.1'
+    implementation 'com.android.support:support-v4:28.0.0-beta01'
     implementation 'org.jetbrains:annotations-java5:15.0'
     //implementation 'com.github.quivr:android-week-view:2.0.2'//com.github.alamkanak:android-week-view:1.2.6
     implementation 'com.ms-square:expandableTextView:0.1.4'

app/src/main/java/de/sebse/fuplanner/MainActivity.java

@@ -23,6 +23,7 @@ import java.util.Iterator;
 import de.sebse.fuplanner.fragments.CanteensFragment;
 import de.sebse.fuplanner.fragments.LoginFragment;
 import de.sebse.fuplanner.fragments.ModulesFragment;
+import de.sebse.fuplanner.fragments.PrefsFragment;
 import de.sebse.fuplanner.fragments.ScheduleFragment;
 import de.sebse.fuplanner.fragments.StartupFragment;
 import de.sebse.fuplanner.fragments.canteen.DaySwitcherFragment;
@@ -51,6 +52,7 @@ public class MainActivity extends AppCompatActivity
     private static final int FRAGMENT_SCHEDULE = 4;
     private static final int FRAGMENT_CANTEENS = 5;
     private static final int FRAGMENT_CANTEENS_DETAILS = 6;
+    private static final int FRAGMENT_PREFERENCES = 7;
 
     private static final String ARG_FRAGMENT_PAGE = "fragment_page";
     private static final String ARG_FRAGMENT_STATUS = "fragment_status";
@@ -156,7 +158,6 @@ public class MainActivity extends AppCompatActivity
         return super.onOptionsItemSelected(item);
     }
 
-    @SuppressWarnings("StatementWithEmptyBody")
     @Override
     public boolean onNavigationItemSelected(@NonNull MenuItem item) {
         // Handle navigation view item clicks here.
@@ -172,6 +173,9 @@ public class MainActivity extends AppCompatActivity
             case R.id.nav_dining:
                 changeFragment(FRAGMENT_CANTEENS);
                 break;
+            case R.id.nav_settings:
+                changeFragment(FRAGMENT_PREFERENCES);
+                break;
             case R.id.nav_share:
                 Intent sendIntent = new Intent();
                 sendIntent.setAction(Intent.ACTION_SEND);
@@ -307,6 +311,9 @@ public class MainActivity extends AppCompatActivity
             case FRAGMENT_CANTEENS_DETAILS:
                 fragment = DaySwitcherFragment.newInstance(Integer.parseInt(newData));
                 break;
+            case FRAGMENT_PREFERENCES:
+                fragment = PrefsFragment.newInstance();
+                break;
             default:  // FRAGMENT_STARTUP
                 fragment = StartupFragment.newInstance();
                 break;

app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java

@@ -0,0 +1,22 @@
+package de.sebse.fuplanner.fragments;
+
+import android.os.Bundle;
+import android.support.v7.preference.PreferenceFragmentCompat;
+
+import de.sebse.fuplanner.R;
+
+public class PrefsFragment extends PreferenceFragmentCompat {
+
+    public static PrefsFragment newInstance() {
+        PrefsFragment fragment = new PrefsFragment();
+        Bundle args = new Bundle();
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        // Load the preferences from an XML resource
+        setPreferencesFromResource(R.xml.preferences, rootKey);
+    }
+}

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

@@ -47,4 +47,5 @@
     <string name="location_name">Location: %1$s</string>
     <string name="module_name">Module: %1$s</string>
     <string name="close">Close</string>
+    <string name="root_preferences" translatable="false">root_preferences</string>
 </resources>

app/src/main/res/xml/preferences.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    android:title="@string/root_preferences">
+    <PreferenceScreen
+        android:title="@string/hello_blank_fragment"
+        android:summary="@string/lorem_ipsum_100">
+
+        <intent android:action="android.intent.action.VIEW"
+            android:data="http://www.android.com" />
+
+    </PreferenceScreen>
+</PreferenceScreen>