selected item on custom listview with contextual action bar
Solution 1
I've only ever tested this in CHOICE_MODE_SINGLE, but in that situation it works by doing the following.
When you select a list item, in code, call "setItemChecked(position, checked)" method (on the ListView instance) for that item in the list.
Add this to the XML for individual ListView items:
android:background="?android:attr/activatedBackgroundIndicator"
Solution 2
Just create a a drawable called custom_background on the way:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/highlight" android:state_activated="true"/>
<item android:drawable="@color/normal"/>
</selector>
and set as background on your parent layout:
android:background="@drawable/custom_background"
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domi
Updated on July 09, 2022Comments
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domi almost 2 years
I recently started using android actionbars and contextual action bars (CAB).
I have just one activity which is a ListActivity. Basically I use the following code snipped to "activate" the CAB:
ListView listView = getListView(); listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL); listView.setMultiChoiceModeListener(new MultiChoiceModeListener() { @Override public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { // Here you can do something when items are selected/de-selected, // such as update the title in the CAB } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { // Respond to clicks on the actions in the CAB switch (item.getItemId()) { case R.id.menu_delete: deleteSelectedItems(); mode.finish(); // Action picked, so close the CAB return true; default: return false; } } @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { // Inflate the menu for the CAB MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.context, menu); return true; } @Override public void onDestroyActionMode(ActionMode mode) { // Here you can make any necessary updates to the activity when // the CAB is removed. By default, selected items are deselected/unchecked. } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { // Here you can perform updates to the CAB due to // an invalidate() request return false; } });
The layout of the list:
<ImageView android:id="@+id/message_on_clipboard_icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:minWidth="30dp" android:padding="7sp" android:src="@android:drawable/presence_online" > </ImageView> <LinearLayout android:id="@+id/linearLayout2" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/listitem_background" android:orientation="vertical" > <TextView android:id="@+id/message" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginRight="5sp" android:fadingEdge="horizontal" android:singleLine="true" android:text="TextView" android:textAppearance="?android:attr/textAppearanceLarge" > </TextView> <LinearLayout android:id="@+id/linearLayout1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/listitem_background" android:orientation="horizontal" > <TextView android:id="@+id/message_length" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="5sp" android:text="@string/message_length" android:textAppearance="?android:attr/textAppearanceSmall" > </TextView> <TextView android:id="@+id/message_count" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="5sp" android:text="TextView" android:textAppearance="?android:attr/textAppearanceSmall" > </TextView> <TextView android:id="@+id/date_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="5sp" android:text="@string/date_label" > </TextView> <TextView android:id="@+id/date_message" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" > </TextView> </LinearLayout> </LinearLayout>
And within main.xml:
<ListView android:id="@+android:id/list" android:layout_width="match_parent" android:layout_height="wrap_content" > </ListView>
Now if I do a long click on a list item the CAB shows up as expected:
I use a MultiChoiceModeListener but unfortunately the selected list items do not change the background like in the example here (light blue background after an item is selected):
Do I have to use a custom selector? Or is there a standard procedure how android does handle this and I just need to make my LinearLayouts transparent? I also tried the following but with no success:
ListView item background via custom selector
It would be great If somebody could point me in the right direction. Please let me know if you need more application code or xml files.
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domi about 12 yearsI get a StackOverflowError if I do the following within
onItemCheckedStateChanged()
:listView.setItemChecked(position, checked);
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domi about 12 yearsnvm. it works just with:
android:background="?android:attr/activatedBackgroundIndicator"
thank you so much! -
Konsumierer almost 12 yearsAs an addition to domi´s comment: if you want to customize the look of selected rows you can do so by using your own implementation of the row´s layout, as it is described in this tutorial: marvinlabs.com/2010/10/custom-listview-ability-check-items
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Takeshi Kaga over 11 yearsThe call to setItemChecked will result in StackOverflowError because calling setItemChecked in onItemCheckedStateChanged will be just calling each other infinitely.
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jrharshath about 11 yearsKonsumierer's link is no longer valid.. new link: blog.marvinlabs.com/2010/10/29/…
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crdx about 11 yearsFor lists
listChoiceBackgroundIndicator
is a better choice. -
Michael Kariv about 10 yearsSure calling setItemChecked() inside onItemCheckedStateChanged will result in StackOverflow - because onItemCheckedStateChanged is called when one changes the item check status - so you create an endless loop
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Admin about 10 yearsI am uunable to call this setItemChecked in my adapter class? How to call it and which parameter to send.
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Ivan Morgillo over 9 yearsPerfect! I created the selector and applied it as grid view item background. Thanks.
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jitain sharma over 9 yearsTo @domi, by setting this
listView.setItemChecked(position, checked);
, your invoking theonItemCheckedStateChanged
method again and again which results to end-less calls to the method and finally results to StackOverflowError. Hope it will resolve your query. -
domi over 9 years@jitainsharma yeah I know! already pointed out by Takeshi Kaga.