I have a ListView that shows list items (duh). When you click on a list item, another Activity opens. Part of the list item layout is a grey star, an ImageView. When you click on this ImageView, I don't want to open another Activity, but I want to change the color of the star to green (= mark the item as favourite) or back (= mark it as not favourite). I managed to do that with an OnClickListener, loading another ImageView on Click, and refreshing the adapter. But for the ImageView to change, after clicking it I need to leave the Activity and enter again. It doesn't refresh instantly. Why, and how can I change that? I've tried lots of different versions, so far nothing works. My ListViewAdapter extends BaseAdapter. Thank you!
public class ListViewAdapterKeysAToZ extends BaseAdapter {
private ArrayList<KeyTagIntern> keyTags;
private ObservableArrayList<KeyTagIntern> list;
private Context context;
TextView name;
TextView place;
ImageView star, favoriteStar;
public ListViewAdapterKeysAToZ(Context context, ObservableArrayList<KeyTagIntern> list)
{
this.context = context;
this.list = list;
keyTags = new ArrayList<>();
for (KeyTagIntern keytag : list) {
keyTags.add(keytag);
}
//(....)
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
KeyTagIntern key = (KeyTagIntern) getItem(position);
if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(R.layout.list_item_keys, parent, false);
}
name = (TextView) convertView.findViewById(R.id.text_keylist_item);
name.setText(key.getName());
place = (TextView) convertView.findViewById(R.id.text_keylist_item_place);
place.setText(key.getPlace());
star = (ImageView) convertView.findViewById(R.id.right_icon_keylist_item);
favoriteStar = (ImageView) convertView.findViewById(R.id.right_icon_keylist_item_favorite);
if (key.isFavorite())
{
star.setVisibility(View.INVISIBLE);
favoriteStar.setVisibility(View.VISIBLE)
favoriteStar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// This makes key.isFavourite() = false for the next time
Paper.book().delete(FAVORIT + String.valueOf(key.getKeyTagID()));
//Since notifyDataSetChanged() didn't work for me, I tried this - but no change
int index = list.indexOf(key);
list.remove(index);
list.add(index, key);
keyTags = new ArrayList<>();
for (KeyTagIntern keytag : list) {
keyTags.add(keytag);
}
notifyDataSetChanged();
}
});
}
// Then do the opposite for if (!key.isFavourite())
Und hier das xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/list_item_keys"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="@color/MiddleDarkGrey">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/btn_list_item_keys"
android:layout_width="match_parent"
android:layout_height="@dimen/height_list_item"
android:layout_marginBottom="3dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="3dp"
android:background="@drawable/white_list_item"
android:paddingLeft="13dp"
android:paddingRight="10dp">
<ImageView
android:id="@+id/icon_keylist_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:visibility="visible"
app:srcCompat="@drawable/ic_key" />
<ImageView
android:id="@+id/icon_reserved"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/chb_add_key"
android:layout_centerVertical="true"
android:visibility="invisible"
app:srcCompat="@drawable/ic_reservate_orange" />
<ImageView
android:id="@+id/icon_taken"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/chb_add_key"
android:layout_centerVertical="true"
android:visibility="invisible"
app:srcCompat="@drawable/ic_taken_red" />
<TextView
android:id="@+id/text_keylist_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_toEndOf="@+id/icon_keylist_item"
android:layout_toRightOf="@+id/icon_keylist_item"
android:gravity="center_vertical"
android:layout_centerVertical="true"
android:text="Text"
android:textColor="@color/DarkGrey"
android:textSize="@dimen/text_list_item" />
<TextView
android:id="@+id/text_keylist_item_place"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/text_keylist_item"
android:layout_alignLeft="@+id/text_keylist_item"
android:layout_marginLeft="2dp"
android:layout_marginBottom="5dp"
android:text="Where is the key?"
android:textColor="@color/DarkGrey"
android:textSize="@dimen/text_list_item_sub" />
<ImageView
android:id="@+id/right_icon_keylist_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
app:srcCompat="@drawable/ic_fav_green" />
<ImageView
android:id="@+id/right_icon_keylist_item_favorite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@drawable/ic_fav_chosen"
android:visibility="invisible"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
