大约一周前，我在这里问了一个关于自定义微调器的问题，并被引导到本指南。http://app-solut.com/blog/2011/03/using-custom-layouts-for-spinner-or-listview-entries-in-android/
我遵循了它，并尝试对其进行调整以与我的代码一起使用并将结果从数据库中提取到微调器上，但它一直在崩溃。
这是微调器的代码。
public class EditTeam extends Activity {
private final List<SpinnerEntry> spinnerContent = new LinkedList<SpinnerEntry>();
private Spinner D1Spinner;
private final ETSpinnerAdapter D1Adapter = new ETSpinnerAdapter(spinnerContent, this);
DataBaseHelper myDbHelper = new DataBaseHelper(this);
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.editteam);
myDbHelper = new DataBaseHelper(this);
myDbHelper.openDataBase();
fillSpinner();
}
private void fillSpinner() {
Cursor c = myDbHelper.FetchDrivers();
startManagingCursor(c);
// create an array to specify which fields we want to display
String[] from = new String[]{"FirstName", "LastName"};
// create an array of the display item we want to bind our data to
int[] to = new int[]{android.R.id.text1};
spinnerContent.add(new SpinnerEntry(1, null, "Test"));
//adapter.setDropDownViewResource( R.layout.spinner_entry_with_icon );
D1Spinner = (Spinner) findViewById(R.id.spr_Driver1);
D1Spinner.setAdapter((SpinnerAdapter) D1Adapter);
}
}
我正在使用该联系人示例中的两个类，目前尚未修改。
如您所见，我目前正在尝试仅手动添加一项，但加载时它会崩溃。
这似乎是一个突破点？
05-25 15:17:34.773: E/AndroidRuntime(241): java.lang.RuntimeException: 无法启动活动 ComponentInfo{com.f1manager.android/com.f1manager.android.EditTeam}: java.lang.ClassCastException: com .f1manager.android.ETSpinnerAdapter
任何想法都会很棒。
谢谢。
ETSpinnerAdapter 代码（未修改示例中的原始代码）：
public class ETSpinnerAdapter {
private final List<SpinnerEntry> content;
private final Activity activity;
public ETSpinnerAdapter(List<SpinnerEntry> content, Activity activity) {
super();
this.content = content;
this.activity = activity;
}
public int getCount() {
return content.size();
}
public SpinnerEntry getItem(int position) {
return content.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
final LayoutInflater inflater = activity.getLayoutInflater();
final View spinnerEntry = inflater.inflate(
R.layout.spinner_entry_with_icon, null); // initialize the layout from xml
final TextView contactName = (TextView) spinnerEntry
.findViewById(R.id.spinnerEntryContactName);
final ImageView contactImage = (ImageView) spinnerEntry
.findViewById(R.id.spinnerEntryContactPhoto);
final SpinnerEntry currentEntry = content.get(position);
contactName.setText(currentEntry.getContactName());
//contactImage.setImageBitmap(currentEntry.getContactPhoto());
return spinnerEntry;
}
}