How to add String arrays to a ListView

Question

I've made goal_item.xml with 5 textviews.

I have Goal class, almost blank. It has ListView to be filled.

public class Goal extends Activity {

    ListView lvgoal;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTitle("Цели");
        setContentView(R.layout.goal);
        lvgoal= (ListView) findViewById(R.id.lv_goal);
    }

goal.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

       <ListView
        android:id="@+id/lv_goal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</LinearLayout>

And I have 5 String arrays to fill the listview's textviews:

String[] name, sum, member, date, id.

How can I fill the ListView with these 5?

Answer 1

You have to implement your own adapter. Firstly create a new layout with the 5 textviews. (example.xml) Then implement the adapter class.

If the 5 arrays are related, I suggest you to do the following:

class Data {
    public String name;
    public String sum;
    public String member;
    public String date;
    public String id;
}

and save your data in a unique array like that:

Data[] data = new Data[x];
data[0] = new Data(); //you have naturally to initialize each element :)
data[0].name = "abc";
data[0].sum = "100";
//...etc...

It will be simpler to create an adapter.

class MyAdapter extends ArrayAdapter<Data> {
    public MyAdapter(Context context, int textViewResourceId, Data[] objects) {
        super(context, textViewResourceId, objects);
    }
    public MyAdapter(Context context, int textViewResourceId, List<Data> objects) {
        super(context, textViewResourceId, objects);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = (LayoutInflater) getContext()
         .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.example, null);
        TextView t1 = (TextView)convertView.findViewById(R.id.t1);
        TextView t2 = (TextView)convertView.findViewById(R.id.t2);
        TextView t3 = (TextView)convertView.findViewById(R.id.t3);
        TextView t4 = (TextView)convertView.findViewById(R.id.t4);
        TextView t5 = (TextView)convertView.findViewById(R.id.t5);
        Data d = getItem(position);
        t1.setText(d.name);
        t2.setText(d.sum);
        t3.setText(d.member);
        t4.setText(d.date);
        t5.setText(d.id);

        return convertView;
    }

}

Then you have to fill the listview:

 Data[] data;
 ListView list = (ListView)findViewById(R.id.lv_goal);
 //...
 MyAdapter adapter = new MyAdapter(context, R.layout.example,data);
 list.setAdapter(adapter);

Answer 2

First you must create separate XML file with your row view.

Then you should write your own adapter, where you will pass your arrays.

You can read more about it in this tutorial.