create a list of cardview based on items count android

Question

Hello I want to make a list of cardView based on how many strings i have in the InfoGenBibliotheque class. I don't really know how to create a list of cardViews based on items count. If someone could be of help I would appreciate it. I have read that i have to create a cardview layout file to create a list from it. //edited so I managed to make it using a listView and BaseAdapter. But when I execute the application the margins are no where to be found.

InfoGenBibliotheque class:

   public class InfoGenBibliotheque {

    private String SalutaionsAnglais [] = {
            "Certainly!",
            "Good afternoon.",
            "Good evening sir.",
            "Good Luck.",
            "Good morning."
    };

    private String SalutaionsFrancais [] = {
            "Certainement!",
            "Bon après-midi.",
            "Bonsoir Monsieur.",
            "Bonne chance.",
            "Bonjour."
    };
}

my XML activity_info_generales file:

my cardView xml file

Adapter java file:

  public class ExpressionAdapter extends BaseAdapter {

    private Context context;
    private ArrayList expressions;

    public ExpressionAdapter(Context context, ArrayList expressions) {
        this.context = context;
        this.expressions = expressions;
    }

    @Override
    public int getCount() {
        return expressions.size();
    }

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

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if(convertView == null){
            convertView = View.inflate(context, R.layout.expressions_card_view,null);
        }

        TextView expressionFrancais = convertView.findViewById(R.id.expressionFrancais);
        TextView expressionAnglais = convertView.findViewById(R.id.expressionAnglais);
        Expression expression = expressions.get(position);

        expressionFrancais.setText(expression.getExpressionFrancais());
        expressionAnglais.setText(expression.getExpressionAnglais());


        return convertView;
    }
}

populating a list of expressions:

  public class ListExpression {

    public static ArrayList getExpressionList(){
        ArrayList expressionList = new ArrayList<>();
        InfoGenBibliotheque infoGenBibliotheque = new InfoGenBibliotheque();
        for(int i = 0;i < infoGenBibliotheque.getSalutaionsAnglais().length;i++){
            expressionList.add(new Expression(i,infoGenBibliotheque.getSalutationFrancais(i),infoGenBibliotheque.getSalutationAnglais(i)));
        }
        return expressionList;
    }
}

Expression class

    public class Expression {

    private int idExpression;
    private String expressionFrancais;
    private String expressionAnglais;

    public Expression(int idExpression, String expressionFrancais, String expressionAnglais) {
        this.idExpression = idExpression;
        this.expressionFrancais = expressionFrancais;
        this.expressionAnglais = expressionAnglais;
    }

    public int getIdExpression() {

        return idExpression;
    }

    public void setIdExpression(int idExpression) {
        this.idExpression = idExpression;
    }

    public String getExpressionFrancais() {
        return expressionFrancais;
    }

    public void setExpressionFrancais(String expressionFrancais) {
        this.expressionFrancais = expressionFrancais;
    }

    public String getExpressionAnglais() {
        return expressionAnglais;
    }

    public void setExpressionAnglais(String expressionAnglais) {
        this.expressionAnglais = expressionAnglais;
    }
}

B&#246; macht Blau · Accepted Answer

Just using the CardView as root element makes the margins disappear:

Putting the CardView inside a FrameLayout gives you the margins:

(But I personally don't think that the horizontal divider lines look good with the cards. If you want them to be invisible, take a look at this post or use a RecyclerView instead of a ListView. )

xml for the second approach:

create a list of cardview based on items count android

Answers (1)

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