LongClick我在 my 上设置了一个，ListActivity它调用一个AlertDialoguewith 选项到deleteor cancel，然后是另一个AlertDialogue用于确认删除。
但是，我需要刷新列表以显示更改，但看不到如何执行此操作（注意列表使用 a 填充ResourceCursorAdapter）：
public class InspectionActivity extends ListActivity {
private Button newInspection;
private static final int ACTIVITY_CREATE=0;
private RMDbAdapter rmDbHelper;
//private AlertDialog longClickOptionsDialog;
private AlertDialog clickOptionsDialog;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_inspection);
setUpViews();
setLongClick();
rmDbHelper = new RMDbAdapter(this);
rmDbHelper.open();
// Get a Cursor for the list items
Cursor listCursor = rmDbHelper.fetchAllInspections();
startManagingCursor(listCursor);
// set the custom list adapter
setListAdapter(new MyListAdapter(this, listCursor));
}
private void setUpViews() {
newInspection = (Button)findViewById(R.id.new_inspection);
newInspection.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
createInspection();
}
});
}
private void setLongClick() {
ListView lv = getListView();
lv.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,int row, final long id) {
Cursor cursor = (Cursor) rmDbHelper.fetchInspection(id);
String inspectionRef = RMUtilities.notEmpty(cursor.getString(cursor.getColumnIndex(
RMDbAdapter.INSPECTION_REF)), "Reference unknown");
String companyName = RMUtilities.notEmpty(cursor.getString(cursor.getColumnIndex(
RMDbAdapter.INSPECTION_COMPANY)), "company unknown");
final String inspectionDialogueText = "(" + inspectionRef + ", " + companyName + ")";
clickOptionsDialog = new AlertDialog.Builder(InspectionActivity.this)
.setTitle(inspectionDialogueText)
.setMessage(R.string.general_text_select_option)
.setPositiveButton(R.string.general_button_delete, new AlertDialog.OnClickListener(){
private AlertDialog confirmDeleteDialog;
public void onClick(DialogInterface dialog, int which){
confirmDeleteDialog = new AlertDialog.Builder(InspectionActivity.this)
.setTitle(R.string.general_text_confirmation)
.setMessage(R.string.general_text_confirm_delete)
.setPositiveButton(R.string.general_button_yes, new AlertDialog.OnClickListener(){
public void onClick(DialogInterface dialog, int which){
rmDbHelper.deleteInspection(id);
**//REFRESH STATEMENT NEEDED HERE..**
}
})
.setNegativeButton(R.string.general_button_cancel, new AlertDialog.OnClickListener(){
public void onClick(DialogInterface dialog, int which){
confirmDeleteDialog.cancel();
}
})
.create();
confirmDeleteDialog.show();
}
})
.setNegativeButton(android.R.string.cancel, new AlertDialog.OnClickListener(){
public void onClick(DialogInterface dialog, int which){
clickOptionsDialog.cancel();
}
})
.create();
clickOptionsDialog.show();
return true;
}
});
}
// In your ListActivity class, create a new inner class that extends ResourceCursorAdapter.
//This inner class is the custom CursorAdapter we will use to manage how data is bound to a list item:
private class MyListAdapter extends ResourceCursorAdapter {
public MyListAdapter(Context context, Cursor cursor) {
super(context, R.layout.inspection_row, cursor);
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
TextView title = (TextView) view.findViewById(R.id.inspection_row_item_main_title);
title.setText(cursor.getString(
cursor.getColumnIndex(RMDbAdapter.INSPECTION_REF)));
TextView description = (TextView) view.findViewById(R.id.inspection_row_item_description);
String companyName = RMUtilities.notEmpty(cursor.getString(cursor.getColumnIndex(
RMDbAdapter.INSPECTION_COMPANY)), "Company unknown");
String inspectionDate = RMUtilities.notEmpty(cursor.getString(cursor.getColumnIndex(
RMDbAdapter.INSPECTION_DATE)), "date unknown");
description.setText("(" + companyName + ", " + inspectionDate + ")");
}
}
private void createInspection() {
Intent i = new Intent(this, InspectionEdit.class);
startActivityForResult(i, ACTIVITY_CREATE);
}
protected void onListItemClick(ListView l, View v, final int pos, final long id){
Cursor cursor = (Cursor) rmDbHelper.fetchInspection(id);
String inspectionRef = RMUtilities.notEmpty(cursor.getString(cursor.getColumnIndex(
RMDbAdapter.INSPECTION_REF)), "Reference unknown");
String companyName = RMUtilities.notEmpty(cursor.getString(cursor.getColumnIndex(
RMDbAdapter.INSPECTION_COMPANY)), "company unknown");
final String inspectionDialogueText = "(" + inspectionRef + ", " + companyName + ")";
super.onListItemClick(l, v, pos, id);
clickOptionsDialog = new AlertDialog.Builder(InspectionActivity.this)
.setTitle(inspectionDialogueText)
.setMessage(R.string.general_text_select_option)
.setPositiveButton(R.string.general_button_open, new AlertDialog.OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
Intent i = new Intent(InspectionActivity.this, AreaActivity.class);
i.putExtra("intentID", id);
startActivityForResult(i, ACTIVITY_CREATE);
}
})
.setNeutralButton(R.string.general_button_edit, new AlertDialog.OnClickListener(){
public void onClick(DialogInterface dialog, int which){
Intent i = new Intent(InspectionActivity.this, InspectionEdit.class);
i.putExtra("intentID", id);
startActivityForResult(i, ACTIVITY_CREATE);
}
})
.setNegativeButton(android.R.string.cancel, new AlertDialog.OnClickListener(){
public void onClick(DialogInterface dialog, int which){
clickOptionsDialog.cancel();
}
})
.create();
clickOptionsDialog.show();
}
谢谢你的帮助。
亲切的问候，
戴夫