ListWorkoutActivity

app/build.gradle

@@ -21,10 +21,9 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
     implementation "androidx.room:room-runtime:2.2.0-alpha02"
+    implementation 'androidx.recyclerview:recyclerview:1.0.0'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
 }

app/src/main/java/de/tadris/fitness/Instance.java

@@ -31,7 +31,7 @@ public class Instance {
 
     private static Instance instance;
 
-    public Instance getInstance(Context context){
+    public static Instance getInstance(Context context){
         if(instance == null){
             instance= new Instance(context);
         }

app/src/main/java/de/tadris/fitness/ListWorkoutsActivity.java

@@ -21,14 +21,37 @@ package de.tadris.fitness;
 
 import android.app.Activity;
 import android.os.Bundle;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.List;
+
+import de.tadris.fitness.data.Workout;
 
 public class ListWorkoutsActivity extends Activity {
 
+    private RecyclerView listView;
+    private RecyclerView.Adapter mAdapter;
+    private RecyclerView.LayoutManager layoutManager;
+    Workout[] workouts;
+
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_list_workouts);
 
+        listView= findViewById(R.id.workoutList);
+        listView.setHasFixedSize(true);
+
+        layoutManager= new LinearLayoutManager(this);
+        listView.setLayoutManager(layoutManager);
+
+        Instance.getInstance(this).db.workoutDao().getWorkouts();
+        listView.setAdapter(new WorkoutAdapter());
+    }
 
 }
-}

app/src/main/java/de/tadris/fitness/WorkoutAdapter.java

@@ -0,0 +1,17 @@
+package de.tadris.fitness;
+
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+public class WorkoutAdapter {
+
+
+    public static class WorkoutViewHolder extends RecyclerView.ViewHolder{
+        public WorkoutViewHolder(@NonNull View itemView) {
+            super(itemView);
+        }
+    }
+
+}

app/src/main/java/de/tadris/fitness/data/WorkoutDao.java

@@ -28,4 +28,7 @@ public interface WorkoutDao {
     @Query("SELECT * FROM workout_sample WHERE workout_id = :workout_id")
     WorkoutSample[] getAllSamplesOfWorkout(long workout_id);
 
+    @Query("SELECT * FROM workout")
+    Workout[] getWorkouts();
+
 }

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

@@ -1,9 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".ListWorkoutsActivity">
 
-</android.support.constraint.ConstraintLayout>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/workoutList"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+</ScrollView>

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

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent" android:layout_height="match_parent"/>