Delete workouts via long press in workout list

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

@@ -37,6 +37,7 @@ import com.github.clans.fab.FloatingActionMenu;
 import de.tadris.fitness.Instance;
 import de.tadris.fitness.R;
 import de.tadris.fitness.data.Workout;
+import de.tadris.fitness.util.DialogUtils;
 import de.tadris.fitness.view.WorkoutAdapter;
 
 public class ListWorkoutsActivity extends Activity implements WorkoutAdapter.WorkoutAdapterListener {
@@ -75,6 +76,9 @@ public class ListWorkoutsActivity extends Activity implements WorkoutAdapter.Wor
 
         checkFirstStart();
 
+        adapter= new WorkoutAdapter(workouts, this);
+        listView.setAdapter(adapter);
+
     }
 
     private void checkFirstStart(){
@@ -101,9 +105,8 @@ public class ListWorkoutsActivity extends Activity implements WorkoutAdapter.Wor
     public void onResume() {
         super.onResume();
 
-        workouts= Instance.getInstance(this).db.workoutDao().getWorkouts();
+        loadData();
-        adapter= new WorkoutAdapter(workouts, this);
+        adapter.notifyDataSetChanged();
-        listView.setAdapter(adapter);
     }
 
     @Override
@@ -112,6 +115,19 @@ public class ListWorkoutsActivity extends Activity implements WorkoutAdapter.Wor
         startActivity(new Intent(this, ShowWorkoutActivity.class));
     }
 
+    @Override
+    public void onItemLongClick(int pos, Workout workout) {
+        DialogUtils.showDeleteWorkoutDialog(this, () -> {
+            Instance.getInstance(ListWorkoutsActivity.this).db.workoutDao().deleteWorkout(workout);
+            loadData();
+            adapter.notifyItemRemoved(pos);
+        });
+    }
+
+    private void loadData(){
+        workouts= Instance.getInstance(this).db.workoutDao().getWorkouts();
+    }
+
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
@@ -131,6 +147,4 @@ public class ListWorkoutsActivity extends Activity implements WorkoutAdapter.Wor
 
         return super.onOptionsItemSelected(item);
     }
-
-
 }

app/src/main/java/de/tadris/fitness/activity/ShowWorkoutActivity.java

@@ -39,11 +39,12 @@ import java.util.Date;
 
 import de.tadris.fitness.Instance;
 import de.tadris.fitness.R;
+import de.tadris.fitness.util.DialogUtils;
 import de.tadris.fitness.util.gpx.GpxExporter;
 import de.tadris.fitness.util.unit.UnitUtils;
 import de.tadris.fitness.view.ProgressDialogController;
 
-public class ShowWorkoutActivity extends WorkoutActivity {
+public class ShowWorkoutActivity extends WorkoutActivity implements DialogUtils.WorkoutDeleter {
 
 
     @Override
@@ -182,17 +183,13 @@ public class ShowWorkoutActivity extends WorkoutActivity {
         return true;
     }
 
-    private void deleteWorkout(){
+    public void deleteWorkout(){
         Instance.getInstance(this).db.workoutDao().deleteWorkout(workout);
         finish();
     }
 
     private void showDeleteDialog(){
-        new AlertDialog.Builder(this).setTitle(R.string.deleteWorkout)
+        DialogUtils.showDeleteWorkoutDialog(this, this);
-                .setMessage(R.string.deleteWorkoutMessage)
-                .setNegativeButton(R.string.cancel, null)
-                .setPositiveButton(R.string.delete, (dialog, which) -> deleteWorkout())
-                .create().show();
     }
 
     private void exportToGpx(){

app/src/main/java/de/tadris/fitness/util/DialogUtils.java

@@ -0,0 +1,22 @@
+package de.tadris.fitness.util;
+
+import android.app.AlertDialog;
+import android.content.Context;
+
+import de.tadris.fitness.R;
+
+public class DialogUtils {
+
+    public static void showDeleteWorkoutDialog(Context context, WorkoutDeleter deleter){
+        new AlertDialog.Builder(context).setTitle(R.string.deleteWorkout)
+                .setMessage(R.string.deleteWorkoutMessage)
+                .setNegativeButton(R.string.cancel, null)
+                .setPositiveButton(R.string.delete, (dialog, which) -> deleter.deleteWorkout())
+                .create().show();
+    }
+
+    public interface WorkoutDeleter{
+        void deleteWorkout();
+    }
+
+}

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

@@ -87,6 +87,10 @@ public class WorkoutAdapter extends RecyclerView.Adapter<WorkoutAdapter.WorkoutV
         holder.lengthText.setText(UnitUtils.getDistance(workout.length));
         holder.timeText.setText(UnitUtils.getHourMinuteTime(workout.duration));
         holder.root.setOnClickListener(v -> listener.onItemClick(workout));
+        holder.root.setOnLongClickListener(v -> {
+            listener.onItemLongClick(position, workout);
+            return true;
+        });
     }
 
     // Return the size of your dataset (invoked by the layout manager)
@@ -97,6 +101,7 @@ public class WorkoutAdapter extends RecyclerView.Adapter<WorkoutAdapter.WorkoutV
 
     public interface WorkoutAdapterListener{
         void onItemClick(Workout workout);
+        void onItemLongClick(int pos, Workout workout);
     }