Hi All,
I just started with Android development and love it so far. To get
some experience, I am writing a little todo application. In my
database I have a state for a todo item, represented as int. I use a
checkbox in a list view to represent this state. To bind the data to
the view, I use a subclass of SimpleCursorAdapter. I add an
onClickListener to the checkbox that updates the state in the database
for the used list item. The problem is, if I use the following code,
the list is screwed up in the display (many items will be checked):
@Override
public View getView(final int pos, View inView, ViewGroup parent) {
View view = inView;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.toodoolist_item, null);
}
cursor.moveToPosition(pos);
...
checkBox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int state = 0;
if (checkBox.isChecked()) {
titleView.setPaintFlags(titleView.getPaintFlags()
|
Paint.STRIKE_THRU_TEXT_FLAG);
titleView.setEnabled(false);
state = 1;
} else {
titleView.setPaintFlags(titleView.getPaintFlags()
^
Paint.STRIKE_THRU_TEXT_FLAG);
titleView.setEnabled(true);
}
ContentValues values = new ContentValues();
values.put(TooDooTable.STATE, state);
context.getContentResolver()
.update(ContentUris.withAppendedId(
TooDooTable.CONTENT_URI, id), values, null,
null);
cursor.requery();
}
});
My current workaround is to use the inflater every time, even if the
inView is not null:
@Override
public View getView(final int pos, View inView, ViewGroup parent) {
View view = inView;
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.toodoolist_item, null);
This works, but I don't understand why I have to do this hack.
What would be the best practice to update the database in a
CurserAdapter and get the changes reflected immediately in the view?
Thanks
Kai
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