我在這裏問了一個關於一個星期左右的問題,關於一個自定義微調框,並引導到本指南。 http://app-solut.com/blog/2011/03/using-custom-layouts-for-spinner-or-listview-entries-in-android/自定義微調框崩潰
我跟着它,我試着適應它與我的代碼一起工作,並將數據庫中的結果拖到微調器上,但它不斷崩潰。
這是微調的代碼。此刻
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);
}
}
,我使用從接觸例如兩個班這是未修正。
正如你所看到的,我正試圖手動添加一個項目,但它只是在你加載時崩潰。
這似乎是突破點?
05-25 15:17:34.773: E/AndroidRuntime(241): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.f1manager.android/com.f1manager.android.EditTeam}: java.lang.ClassCastException: com.f1manager.android.ETSpinnerAdapter
任何想法都會很棒。
謝謝。
ETSpinnerAdapter代碼(在例子中的原代碼被修改):
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;
}
}
在這裏添加完整的logcat和佈局文件 –
我認爲問題在這裏:'D1Spinner.setAdapter((SpinnerAdapter)D1Adapter)'當某些施法失敗時,會引發錯誤。 – Sajmon
如果我這樣做是因爲它是在指南中我得到這個錯誤:類型AbsSpinner中的方法setAdapter(SpinnerAdapter)不適用於參數(ETSpinnerAdapter)如果我帶走(SpinnerAdapter) –