Change the color of the List View item if it is disabled - Android

Question

I have a normal listview that lists the names of my users.

And I would like disabled users to have the grey background of the list item. How to do this?

public class Usuario {

private String nome;
private String endereco;
private Boolean ativo;


//construtor
// getters e setters

}

That is, if active is true, leave normal. If false, leave gray.

How do I change the color of the List View item if it is disabled?

Answer 1

To do this properly, you need to create a Adapter which will receive your user, perform the active and inactive check and create an item from ListView for him.

You will need to:

1. A class ( e. g. UsuarioListAdapter) extending BaseAdapter;
2. A layout ( e. g. adapter_item_usuario),that the UsuarioListAdapter use to put the data of your class Usuario.

Get to work!

• Create layout for list items:

  <?xml version="1.0" encoding="utf-8"?>
  
  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent" >
  
  <TextView android:id="@+id/textview_nome"/>
  
  <TextView android:id="@+id/textview_endereco"/>
  
  </RelativeLayout>
  

• Now create the class that will extend the BaseAdapter:

  public class UsuarioListAdapter extends BaseAdapter {
  
      Context mContext;
      List<Usuario> mUsuarios = new ArrayList<Usuario>();
  
      public UsuarioListAdapter(Context context, List<Usuario> usuarios){
  
          mContext = context;
          mUsuarios = usuarios;
      }
  
      @Override
      public int getCount() {
          return mUsuarios.size();
      }
  
      @Override
      public Object getItem(int position) {
          return mUsuarios.get(position);
      }
  
      @Override
      public long getItemId(int position) {
          return position;
      }
  
      // Neste método que é feita a verificação e a mudança de cor do item
      @Override
      public View getView(int position, View view, ViewGroup parent){
  
      LayoutInflater layoutInflater = (LayoutInflater) context
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  
      view = layoutInflater.inflate(R.layout.adapter_item_usuario,null);
  
      // Verificação e mudança de cor
      if(mUsuario.get(position).estaAtivo == false){
  
          view.setBackgroundResource(R.color.Grey);
  
      }
  
      TextView mTextviewNome = (TextView) view.findViewById(R.id.textview_noticia);
      TextView mTextViewEnderco = (TextView) view.findViewById(R.id.textview_noticia_data);
  
      mTextviewNome.setText(mUsuarios.get(position).getNome());
      mTextViewEnderco.setText(mUsuarios.get(position).getEndereco());
  
      return view;
  }
  

Now, instead of you creating a SimpleArrayAdapter, create a UsuarioListAdapter passing the correct parameters and setting it as your Adapter ListView.