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Fen Dev
Asked: 2020-07-29 10:00:33 +0800 CST 2020-07-29 10:00:33 +0800 CST

在 CustomArrayAdapter 中更改 TextView 的文本

  • 772

我有一个ListViewwith CustomArrayAdapter，checkbox在Onclickdel里面我想修改delcheckbox的文本，我试过这个但我不能，它不会修改中的文本：CustomArrayAdapterTextViewFragmentFragment

 public class CustomArrayAdapter extends ArrayAdapter<Row> implements View.OnClickListener{

    private LayoutInflater layoutInflater;
    TextView crec;
private Context mcontext;

    public CustomArrayAdapter(Context context, List < Row > objects)
    {
        super(context, 0, objects);
        layoutInflater = LayoutInflater.from(context);
        this.mcontext = context;

    }

    @Override
    public View getView ( int position, View convertView, ViewGroup parent)
    {
        // holder pattern
        Holder holder = null;
        if (convertView == null) {
            holder = new Holder();


            convertView = layoutInflater.inflate(R.layout.listadapter_multiple, null);
            View convertView2 = layoutInflater.inflate(R.layout.fragment_recomendacion, null);

            holder.setTextViewTitle((TextView) convertView.findViewById(R.id.textViewTitle));
            holder.setTextViewSubtitle((TextView) convertView.findViewById(R.id.textViewSubtitle));
            holder.setCheckBox((CheckBox) convertView
                    .findViewById(R.id.checkBox));
            holder.helloTxt= (TextView) convertView2.findViewById(R.id.crec);


            convertView.setTag(holder);


        } else {
            holder = (Holder) convertView.getTag();
        }

        final Row row = getItem(position);
        holder.getTextViewTitle().setText(row.getTitle());
        holder.getTextViewSubtitle().setText(row.getSubtitle());
        holder.getCheckBox().setTag(position);
        holder.getCheckBox().setChecked(row.isChecked());
        holder.getCheckBox().setOnClickListener(this);




        return convertView;
    }


@Override
public void onClick(View v) {
    Holder holder = new Holder();

    CheckBox checkBox = (CheckBox) v;
    int position = (Integer) v.getTag();
    final Row row = getItem(position);

    if(checkBox.isChecked()) {
       holder.helloTxt.setText("eltexto");
        notifyDataSetChanged();


    }

}

我的持有人：

  static class Holder{

    TextView textViewTitle;
    TextView textViewSubtitle;
    CheckBox checkBox;
    public TextView helloTxt;

    public TextView getTextViewTitle()
    {
        return textViewTitle;
    }

    public void setTextViewTitle(TextView textViewTitle)
    {
        this.textViewTitle = textViewTitle;
    }
    public TextView getTextViewSubtitle()
    {
        return textViewSubtitle;
    }

    public void setTextViewSubtitle(TextView textViewSubtitle)
    {
        this.textViewSubtitle = textViewSubtitle;
    }
    public CheckBox getCheckBox()
    {
        return checkBox;
    }
    public void setCheckBox(CheckBox checkBox)
    {
        this.checkBox = checkBox;
    }

}

TextView 在 Fragment 中声明，它是一个普通的 TextView：

public class Recomendacion extends Fragment {
   ...
   TextView crec;
   //codigo
   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
       ...
       crec = (TextView) view.findViewById(R.id.crec);
       //codigo
android

2 Answers

  1. Best Answer

    我通过调用Activity容器中的函数来解决它Fragment：

    @Override
public void onClick(View v) {
    Holder holder = new Holder();

    CheckBox checkBox = (CheckBox) v;
    int position = (Integer) v.getTag();
    final Row row = getItem(position);

    if(checkBox.isChecked()) {

        String retur = ((Principal) getContext()).Contador(true);

    }

}

    在Activity其中我创建了修改的函数TextView：

     public String Contador(boolean foo){
    TextView t = (TextView) fragmentView.findViewById(R.id.textview);
    Fragment someFragment = getSupportFragmentManager().findFragmentById(R.id.output);
    View fragmentView = someFragment.getView();
    String result = "Texto";

    if (foo) {

            t.setText(result);
        }

    }
    • 1

  2. 一个建议是添加一个公共方法，您可以在其中更改所需的文本TextView，这在类中Recomendacion：

    public void cambiaTexto(String Texto){
  //Cambia texto en TextView.
  crec.setText(Texto);
}

    onClick()在Adapter的方法中CustomArrayAdapter发送文本：

    @Override
public void onClick(View v) {
   CustomArrayAdapter.cambiaTexto("eltexto");
   ...
   ...
}

    有了这个，您将能够更改文本和您TextView的Fragment Recomendacion.

    • 0