您想要实现的概念是可行的,但不像您现在的工作方式那样。
最好、最简单的解决方案是跟踪已点击项的状态并在适配器内为它们提供正确的布局。我设置了一个小例子:
活动
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>