Android Gridview

Question

People who really need your help. I have the following situation a gridview that contains 3 columns and n rows in each cell of this grid display three information all three being a simple text(Textview that I insert from another xml) I am populating this grid for now with an arraylist just for testing. I would like to know how to do so that in the event click of this grid(cell in specifics) I can get the values I passed to it. example.

the cell has 3 information that was set in it. day month year all in a single cell but I want to get these separate values after the click. Thanks in advance.

Answer 1

I believe you need to wear one AdapterView.OnItemClickListener in his GridView, so can be notified when an item of your GridView is selected.

The code would be something like:

public class MyActivity extends Activity {
     ListAdapter mAdapter;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(...);

         mAdapter = new MyAdapter(); // Inicialize seu Adapter

         GridView gv = (GridView) findViewById(...); // Recupera o GridView

         gv.setAdapter(mAdapter);
         gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
             @Override
             public void onItemClick (AdapterView<?> parent, View view, int position, long id) {
                 Object obj = mAdapter.getItem(position);
                 // Usar o objeto relativo aquela célula
             }
         });
     }
}

public class MyAdapter extends BaseAdapter {

    List<Object> mItems = new ArrayList<Object>();

    // Demais metodos necessário

    public Object getItem(int position) {
        return mItems.get(position);
    }
}

Of course I have greatly simplified the code (leaving only the most important code), omitting some methods and code that need to be implemented. But I recommend reading the documentation on the GridView, and a how to link the data to a AdapterView, the class AdapterView.OnItemClickListener and the class itself AdapterView that has many others Listeners that may be useful.