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Checkbox and ListView in Android Layout

Posted on 2016-11-01
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163 Views
Last Modified: 2016-11-20
Hola!

I'm trying to learn some Android programming and I've encountered something very odd. I have the following code:

    private void populateListView() {
        Cursor cursor = myDb.getAllRows();
        final String[] fromFieldNames = new String[] {DBAdapter.KEY_PLAYER, DBAdapter.KEY_ROWID};
        final int[] toViewIDs = new int[] {R.id.textViewPlayerName, R.id.textViewPlayerId};
        SimpleCursorAdapter myCursorAdapter;
        myCursorAdapter = new SimpleCursorAdapter(getBaseContext(), R.layout.item_layout, cursor, fromFieldNames, toViewIDs, 0);
        ListView myList = (ListView) findViewById(R.id.players_list);
        myList.setAdapter(myCursorAdapter);

        myList.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View viewClicked, int position, long id) {
                //Add code for each item here. Use either position or id to differentiate items
                ListView lv = (ListView) parent;
                if (lv.isItemChecked(position)) {
                    Toast.makeText(getBaseContext(), "You checked " + position, Toast.LENGTH_SHORT).show();
                    lv.setItemChecked(position, true);
                }else{
                    Toast.makeText(getBaseContext(), "You unchecked " + position, Toast.LENGTH_SHORT).show();
                    lv.setItemChecked(position, false);
                }
            }
        });
    }

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It populates a listView from a database but when I click on any item, the checkbox is not checked. It always throws me the last "Unchecked" toast. It just won't stay checked.

I've already tried the "make the checkbox not focusable" trick I found everywhere but that doesn't help. Any ideas?

Just in case, here's the XML for part of the ListView:

    <CheckBox
        android:id="@+id/checkBoxPlayerSelected"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:focusable="false"
        android:focusableInTouchMode="false"
        android:clickable="false"
        android:text="" />

    <TextView
        android:id="@+id/textViewPlayerName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/checkBoxPlayerSelected"
        android:layout_alignBottom="@+id/checkBoxPlayerSelected"
        android:layout_toRightOf="@+id/checkBoxPlayerSelected"
        android:text="TextView" />

    <TextView
        android:text="TextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textViewPlayerName"
        android:layout_toRightOf="@+id/textViewPlayerName"
        android:layout_toEndOf="@+id/textViewPlayerName"
        android:id="@+id/textViewPlayerId"
        android:visibility="invisible" />

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Any clues?

Thanks!
0
Comment
Question by:Cesar Aracena
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4 Comments
 
LVL 17

Expert Comment

by:Chris Harte
ID: 41870199
You are setting your itemClickListener to the adapterView. Try setting it to the listView

//myList.setOnItemClickListener(new AdapterView.OnItemClickListener() 

//Try this instead
 myList.setOnItemClickListener (new OnItemClickListener() 

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0
 
LVL 6

Author Comment

by:Cesar Aracena
ID: 41871033
It tells me "Cannot resolve symbol 'OnItemClickListener'" and upon hitting Alt+Enter it resolves again to AdapterView.OnItemClickListener()
0
 
LVL 17

Accepted Solution

by:
Chris Harte earned 500 total points
ID: 41872034
"Cannot resolve symbol 'OnItemClickListener'"

That is because you have not implemented it in your activity. eg
public class This_Activity extends Activity implements View.OnClickListener

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