あなたが達成したい概念は可能ですが、あなたが現在働いている方法とは異なります。
最善かつ最も簡単な解決策は、クリックされたアイテムの状態を追跡し、アダプター内でそれらに正しいレイアウトを与えることです。私は少し例を設定しました：
アクティビティ
public class StackOverFlowActivity extends Activity {
GridView gridView;
MyCustomAdapter myAdapter;
ArrayList<GridObject> myObjects;
static final String[] numbers = 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
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myObjects = new ArrayList<GridObject>();
for (String s : numbers) {
myObjects.add(new GridObject(s, 0));
}
gridView = (GridView) findViewById(R.id.gridView1);
myAdapter = new MyCustomAdapter(this);
gridView.setAdapter(myAdapter);
gridView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View v, int position, long arg3) {
myObjects.get(position).setState(1);
myAdapter.notifyDataSetChanged();
}
});
}
static class ViewHolder {
TextView text;
}
private class MyCustomAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public MyCustomAdapter(Context context) {
mInflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
GridObject object = myObjects.get(position);
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item_icon_text, null);
holder = new ViewHolder();
holder.text = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.text.setText(object.getName());
if (object.getState() == 1) {
holder.text.setBackgroundColor(Color.GREEN);
} else {
holder.text.setBackgroundColor(Color.BLUE);
}
return convertView;
}
@Override
public int getCount() {
return myObjects.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
}
}
GridObject
public class GridObject {
private String name;
private int state;
public GridObject(String name, int state) {
super();
this.name = name;
this.state = state;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
}
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<GridView
android:id="@+id/gridView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="50dp"
android:gravity="center"
android:numColumns="auto_fit"
android:stretchMode="columnWidth" >
</GridView>
</LinearLayout>
list_item_icon_text
<?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" >
<TextView
android:id="@+id/text"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>