我正在開發一個小型應用程序,並使用填充了複合組件的列表視圖。這個組件有兩個文本視圖和一個按鈕。其中一個文本視圖是不可見的,當點擊該按鈕時,它應該出現。我可以顯示列表,但是當按鈕被點擊時,我不能使textview可見。 這裏是組件的XML:使用按鈕單擊來擴展listview自定義組件
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:text="@+id/TextView01"
android:id="@+id/placeNamwView"
android:layout_height="wrap_content"
android:textSize="30dp"
android:layout_width="wrap_content"
android:maxWidth="250dp">
</TextView>
<Button
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/placeNamwView"
android:layout_width="wrap_content"
android:id="@+id/Button01"
android:text="More">
</Button>
<EditText
android:layout_below="@+id/placeNamwView"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@+id/TextView01"
android:id="@+id/placeAddressView"
android:textSize="20dp"
android:textColor="#FFFF0000"
android:maxWidth="250dp">
</EditText>
</RelativeLayout>
這是填充列表一個ArrayAdapter:
public class AddressAdapter extends ArrayAdapter<Item> {
int resource;
RelativeLayout placeView;
EditText addressText;
public AddressAdapter(Context _context, int _resource, List<Item> _items) {
super(_context, _resource, _items);
resource = _resource;
}
private OnClickListener buttonClick = new OnClickListener() {
public void onClick (View v) {
int i = placeView.findViewById(R.id.stub_import).getVisibility();
visibility(i);
}
}
private void visibility(int i) {
//
TODO Auto-generated method stub
switch(i) {
case(View.GONE):
addressText.setVisibility(View.VISIBLE);
break;
case(View.VISIBLE):
addressText.setVisibility(View.GONE);
break;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Item item = getItem(position);
String name = item.getName();
String address = item.getAddress();
if (convertView == null) {
placeView = new RelativeLayout(getContext());
String inflater = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater vi = (LayoutInflater)getContext().getSystemService(inflater);
vi.inflate(resource, placeView, true);
}
else
{
placeView = (RelativeLayout) convertView;
}
TextView nameText = (TextView)placeView.findViewById(R.id.placeNamwView);
Button button = (Button)placeView.findViewById(R.id.Button01);
addressText = (EditText)placeView.findViewById(R.id.placeAddressText);
button.setOnClickListener(buttonClick);
nameText.setText(name);
addressText.setText(address);
return placeView;
}
}