ایجاد context menu برای ایتم های لیست ویو (حل شد)

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);


  names = new String[]{
    "Sana", "Sara", "Sami", "Sani", "Baba", "Mom", "Ali Reza"};

  MyAdapter adapter = new MyAdapter(getApplicationContext());
  lst_content = (ListView) findViewById(R.id.lst_content);
  lst_content.setAdapter(adapter);

  registerForContextMenu(lst_content);
}

//کلاس اداپتر که یک کلاس داخلی در mainActivityهستش 

 private class MyAdapter extends BaseAdapter {

    LayoutInflater mInflater;

    public MyAdapter(Context context) {
      mInflater = LayoutInflater.from(context);

    }

    @Override
    public int getCount() {
      return names.length;
    }

    @Override
    public Object getItem(int position) {
      return position;
    }

    @Override
    public long getItemId(int position) {
      return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

      View view;

      if (convertView == null) {
        view = mInflater.inflate(R.layout.items_layout, parent, false);

      } else {
        view = convertView;
      }

      TextView txt_name = (TextView) view.findViewById(R.id.txt_name);
      txt_name.setText(names[position]);
      linear_content = (ViewGroup) view.findViewById(R.id.linear_content);

      linear_content.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

          Intent intent = new Intent(MainActivity.this  , DetailActivity.class);
          MainActivity.this.startActivity(intent);
        }
      });

      return view;
    }
  }

  @Override
  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);

    AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;

    menu.setHeaderTitle("Options...");
    menu.add(0, v.getId(), 0, "Call");
    menu.add(0, v.getId(), 0, "Sms");
  }


  @Override
  public boolean onContextItemSelected(MenuItem item) {
    if (item.getTitle() == "Call") {
      Toast.makeText(getApplicationContext(), "Call", Toast.LENGTH_SHORT).show();

    } else if (item.getTitle() == "Sms") {
      Toast.makeText(getApplicationContext(), "Sms", Toast.LENGTH_SHORT).show();

    } else {
      return false;
    }

    return true;
  }
}