Android - Gridview with Custom BaseAdapter, create onclicklistener

Question

I have created a gridview which displays the letters of the alphabet. I populate the gridview with a string array using a custom BaseAdapter. What i want to do is to be able to get the value (letter) of the clicked cell. In order to verify that it works, i have created a TextView and i want when the user clicks on an item (cell) to set the text of the TextView with the value of the selected cell I have made an attempt which doesn't work. Here is my code: activity_main.xml ```

Accepted Answer

The problem in your case is that the button is consuming the click and it doesn't get to GridView. I see two options:

- The easy one: in `cell.xml` have these properties for your `Button`: `android:clickable="false"` and `android:focusable="false"`

- A grosso-modo: send the Activity as parameter to adapter and expose a public method from `MainActivity`. If you think of re-using the adapter, then send an abstract type of activity or an interface.

Something as:

```
public class MainActivity extends Activity {
    private TextView text;
    private GridView gridView;
    private final String[] items = new String[]{"A", "B", "C", "D", "E", "F", "G", "H", "I", "J",
            "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

text = (TextView) findViewById(R.id.feedback);

gridView = (GridView) this.findViewById(R.id.myGridView);
        CustomGridAdapter gridAdapter = new CustomGridAdapter(MainActivity.this, items);
        gridView.setAdapter(gridAdapter);

}

public void itemClicked(int position) {
        text.setText(items[position]);
    }
}
```

and in your adapter:

```
public class CustomGridAdapter extends BaseAdapter {

private MainActivity context;
    private String[] items;
    LayoutInflater inflater;

public CustomGridAdapter(MainActivity context, String[] items) {
        this.context = context;
        this.items = items;
        inflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

public View getView(final int position, View convertView, ViewGroup parent) {

if (convertView == null) {
            convertView = inflater.inflate(R.layout.cell, null);
        }
        Button button = (Button) convertView.findViewById(R.id.grid_item);
        button.setText(items[position]);
        button.setOnClickListener(new OnClickListener() {

@Override
            public void onClick(View v) {
                context.itemClicked(position);
            }
        });

return convertView;
    }

@Override
    public int getCount() {
        return items.length;
    }

@Override
    public Object getItem(int position) {
        return items[position];
    }

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

Android - Gridview with Custom BaseAdapter, create onclicklistener

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