Insert button dynamically in Relativelayout

Question

I have a Listview and I want to add a button next to each item in the list, but it has to be dynamically:

item_listview.xml

   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/relativelayout">

<ImageButton
        android:layout_width="60dp"
        android:layout_height="match_parent"
        android:background="@color/vermelho"
        android:src="@drawable/lixobotao"
        android:id="@+id/btnexcluir"
        android:layout_alignParentTop="true"
        android:layout_toStartOf="@+id/btnfavorito"
        android:visibility="invisible"/>

    <ImageButton
        android:layout_width="60dp"
        android:layout_height="match_parent"
        android:background="@color/amarelo"
        android:src="@drawable/estrelabotao"
        android:id="@+id/btnfavorito"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        android:visibility="invisible"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/primary_text"
        android:id="@+id/texto1"
        android:textSize="20dp"/>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/secondary_text"
        android:id="@+id/texto2"
        android:textSize="15dp"
        android:layout_below="@+id/texto1"
        android:layout_alignParentStart="true" />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/secondary_text"
        android:id="@+id/texto3"
        android:textSize="15dp"
        android:layout_below="@+id/texto2"
        android:layout_alignParentStart="true" />

</RelativeLayout>

xml list.

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    android:weightSum="1"
    android:gravity="center">

    <ListView
        android:id="@+id/lisview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:divider="#FFECECEC"
        android:dividerHeight="2sp"
        android:layout_alignParentEnd="true"
        android:layout_above="@+id/btn">
    </ListView>

    <Button
        android:layout_width="130dp"
        android:layout_height="30dp"
        android:text="SALVAR"
        android:id="@+id/btn"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true" />

</RelativeLayout>

How do I make the button next to each item? I want it to look like this green button in the image:

I tried to make it invisible like they suggested and it didn’t work:

@Override
    protected void onCreate(Bundle savedInstanceStade){
        super.onCreate(savedInstanceStade);
        setContentView(R.layout.listas);

    ListView list = (ListView) findViewById(R.id.list);


        inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);


list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                View v;
                v = inflater.inflate(R.layout.lista_listas,null);
                ImageButton favorito = (ImageButton) v.findViewById(R.id.btnfavorito);
                ImageButton excluir = (ImageButton) v.findViewById(R.id.btnexcluir);
                favorito.setBackgroundColor(getResources().getColor(R.color.primary));
                favorito.setVisibility(View.VISIBLE);
                excluir.setVisibility(View.VISIBLE);
                }
            }
        });

Answer 1

Answering your question of how to create a Button in the RelativeLayout, it’s simple, here’s an example of how to do it dynamically:

Button btTeste = new Button(this);
btTeste.setText("Teste");

RelativeLayout rl = (RelativeLayout ) findViewById(R.id.seu_relative_layout);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
rl.addView(btTeste, lp);

---

As for your other question regarding button visibility, I left a comment responding:

It didn’t work because you’re inflating the layout at click time, and not using the View corresponding to your item. Remove both first lines you use to inflate the layout, and replace the other lines where is v for view, for the onItemClick It’s all right View corresponding to the item you clicked

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    ImageButton favorito = (ImageButton) view.findViewById(R.id.btnfavorito);
    ImageButton excluir = (ImageButton) view.findViewById(R.id.btnexcluir);
    favorito.setBackgroundColor(getResources().getColor(R.color.primary));
    favorito.setVisibility(View.VISIBLE);
    excluir.setVisibility(View.VISIBLE);
}