ChechBox im ListView abfragen

public class MainActivity extends Activity {
	
	ListView listView;
	File mitarbeiterCSV;
	ArrayList<String> mitarbeiterList;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		setContentView(R.layout.activity_main);
		
		File dir = Environment.getExternalStorageDirectory();	
		mitarbeiterCSV=new File(dir, "download/Mitarbeiter.csv");
		mitarbeiterList=new ArrayList<String>();
		loadStart();
						
		listView=(ListView) findViewById(R.id.listView);		
		ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,R.layout.list_mitarbeiter_row, R.id.checkbox,mitarbeiterList);
		listView.setAdapter(adapter);
		CheckBox cb=(CheckBox) findViewById(R.id.checkbox);
        cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(getApplicationContext(), "Checked", Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(getApplicationContext(), "Not Checked", Toast.LENGTH_SHORT).show();
                }
            }
        });
	}	
	      
	public void loadStart(){
		FileInputStream fileIn;
		try
		{
			fileIn=new FileInputStream(mitarbeiterCSV);
			loadData(fileIn);
		}
		catch (FileNotFoundException e)
		{
			Toast.makeText(getApplicationContext(),"Mitarbeiter Stammdaten nicht vorhanden", Toast.LENGTH_LONG).show();
		}
	}
	
	public void loadData(FileInputStream fileIn) {
		BufferedReader reader=new BufferedReader(new InputStreamReader(fileIn));
		String line;
		try
		{
			while((line=reader.readLine()) != null){
				mitarbeiterList.add(line);
			}
		}
		catch (IOException e)
		{
			Toast.makeText(getApplicationContext(),"Fehler beim laden der Daten.", Toast.LENGTH_LONG).show();
		}
	}
	
	//**Click Event Button "Weiter"**/
	public void next(View view) {
		Intent nextScreen=new Intent(getApplicationContext(), ProjektActivity.class);
		startActivity(nextScreen);		 
	}
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:gravity="fill_vertical"
    android:orientation="vertical"
    tools:context="${packageName}.${activityClass}" >

    <LinearLayout
        android:layout_width="320dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" >

        <Button
            android:id="@+id/Mitarbeiter"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/Mitarbeiter" />

        <Button
            android:id="@+id/btWeiter"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:layout_weight="1"
            android:onClick="next"
            android:text="@string/Weiter" />
    </LinearLayout>

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="448dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true" >

    </ListView>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" 
    android:gravity="left">

    <CheckBox
        android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="14sp"
        android:text="" />
</LinearLayout>

public CheckboxListActivity extends Activity implements CheckboxListAdapter[COLOR=#000000][B].[/B][/COLOR]CheckboxCallback{
//[...

@Override
protected void onCreate(....){
     listView = (ListView) findViewById(...);
     listView.setAdapter(new CheckboxArrayAdapter(this));
}


@Override
public void checkboxClicked(CompoundButton buttonView, boolean isChecked){
 // stuff with checkbox
}

//..]
}
[COLOR=#000000][B]public[/B][/COLOR] [COLOR=#000000][B]class[/B][/COLOR] CheckboxListAdapter [COLOR=#000000][B]extends[/B][/COLOR] ArrayAdapter<String>{
public interface CheckboxCallback{
    public void checkboxClicked(CompoundButton buttonView, boolean isChecked);
}

private CheckboxCallback callback
  public CheckboxListAdapter(Context context, 
CheckboxCallback callback){
   //...
}

@Override
public View getView(final int position, View convertView, final ViewGroup parent) {
  if (convertView == null) {
  //neuen View anlegen mit eigenem Layout
  }
  
//checkbox hohlen
  ((CheckBox)convertView.getViewById(..)).setOnChangeListener(new ...{
      @Override
     public void onCheckedChanged(final CompoundButton buttonView, final boolean isChecked) {
    callback.checkboxClicked(buttonView, isChecked);            
      }
  }
  
}




}

ArrayAdapter<String> adp = new ArrayAdapter<String>(.....){
            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                
                if(convertView == null){
                    convertView = View.inflate(getApplicationContext(), R.layout.list_mitarbeiter_row, null);
                }
                
                // Hier dein View mit dem krämpel befüllen den du brauchst
                
                Checkbox cb = convertView.findViewById(R.id.checkbox);
                
                
                CheckBox cb=(CheckBox) findViewById(R.id.checkbox);
                cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
         
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        if(isChecked){
                            Toast.makeText(getApplicationContext(), "Checked", Toast.LENGTH_SHORT).show();
                        }else{
                            Toast.makeText(getApplicationContext(), "Not Checked", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
                
                
                return super.getView(position, convertView, parent);
            }
        };