Refactor

app/src/main/java/com/example/ueberwachungssystem/Fragments/VideoFileFragment.java

+package com.example.ueberwachungssystem.Fragments;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.Toast;
+
+import androidx.fragment.app.Fragment;
+
+import com.example.ueberwachungssystem.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class VideoFileFragment extends Fragment {
+
+    private ListView listView;
+    private ArrayAdapter<String> adapter;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.video_file_fragment, container, false);
+
+        listView = rootView.findViewById(R.id.listView);
+        adapter = new ArrayAdapter<>(requireContext(), android.R.layout.simple_list_item_1, getData());
+        listView.setAdapter(adapter);
+
+        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                // Handle item click event here
+                String selectedItem = adapter.getItem(position);
+                Toast.makeText(requireContext(), selectedItem, Toast.LENGTH_SHORT).show();
+            }
+        });
+
+        return rootView;
+    }
+
+    private List<String> getData() {
+        // Add your data source here, e.g., an array or a list
+        List<String> data = new ArrayList<>();
+        data.add("Item 1");
+        data.add("Item 2");
+        data.add("Item 3");
+        return data;
+    }
+}

app/src/main/java/com/example/ueberwachungssystem/MainActivity.java

 
 import androidx.camera.core.ExperimentalGetImage;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentTransaction;
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatActivity;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
 import android.widget.Button;
+import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.Toast;
 import android.widget.ToggleButton;
 import com.example.ueberwachungssystem.Fragments.Fragment2;
 import com.example.ueberwachungssystem.Detection.DetectorService;
 import com.example.ueberwachungssystem.Fragments.Fragment3;
+import com.example.ueberwachungssystem.Fragments.VideoFileFragment;
+
+import java.util.ArrayList;
 
 @ExperimentalGetImage
 public class MainActivity extends AppCompatActivity {
     private Fragment1 fragment1;
     private Fragment2 fragment2;
     private Fragment3 fragment3;
+    private VideoFileFragment videoFileFragment = new VideoFileFragment();
     private DetectorService detectorService = new DetectorService();
-    int num=0;
+    int num = 0;
     //Textviews
     private TextView Auswahl;
     private TextView AoderA;
 
     public void onClickZeigeFragment2(View view) {
         Button button = (Button) view;
-        zeigeFragment(fragment2.erstellen("Hier stehen dann die Videos"));
+        //zeigeFragment(fragment2.erstellen("Hier stehen dann die Videos"));
+        zeigeFragment(videoFileFragment);
     }
     public void onClickZeigeFragment3(View view) {
         Button button = (Button) view;

app/src/main/java/com/example/ueberwachungssystem/VideoAdapter.java

+package com.example.ueberwachungssystem;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+
+import java.util.List;
+
+public class VideoAdapter extends ArrayAdapter<String> {
+
+    private List<String> fileList;
+    private OnFileClickListener listener;
+
+    public VideoAdapter (Context context, List<String> fileList, OnFileClickListener listener) {
+        super(context, 0, fileList);
+        this.fileList = fileList;
+        this.listener = listener;
+    }
+
+    @Override
+    public View getView(final int position, View convertView, ViewGroup parent) {
+        if (convertView == null) {
+            convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item_file, parent, false);
+        }
+
+        TextView fileNameText = convertView.findViewById(R.id.file_name_text);
+        final String fileName = fileList.get(position);
+        fileNameText.setText(fileName);
+
+        convertView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                listener.onFileClick(fileName);
+                listener.onFileClick(fileName);
+            }
+        });
+
+        return convertView;
+    }
+
+    public interface OnFileClickListener {
+        View onCreateView(LayoutInflater inflater, ViewGroup container,
+                          Bundle savedInstanceState);
+
+        void onFileClick(String fileName);
+    }
+}

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

         </LinearLayout>
     </ScrollView>
     -->
+    <ListView
+        android:id = "@+id/listView"
+        android:layout_width = "wrap_content"
+        android:layout_height = "wrap_content"/>
 
 </RelativeLayout>

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

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <!-- list_item_file.xml -->
+    <TextView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/file_name_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="16sp"
+        android:padding="8dp"
+        tools:ignore="MissingConstraints" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center_horizontal"
+    android:orientation="vertical"
+    android:background="@android:color/holo_blue_light">
+
+    <ListView
+        android:id = "@+id/listView"
+        android:layout_width = "wrap_content"
+        android:layout_height = "wrap_content"
+        tools:ignore="MissingConstraints" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>