In portrait mode I have one Fragment List View (A). When I click on the
item it launches a new activity which in turn loads a new fragment (B) to
display the selected record. When I 'LongHold' on one item in (A) the CAB
launches where I then 'Single Click' on lines to add/subtract lines to the
'Number of Selected' and have an option to delete. All is good in this
mode.
In landscape mode I have something similar working except the 'B' fragment
is launched in its own Frame so it appears alongside the list fragment (A).
The problem I am having is trying to 'highlight' the item I picked from the
list (A) for the details being displayed (B).
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
mListener.displayMarkers(id);
getListView().setItemChecked(position, true);
}
As soon as I setItemChecked the Contextual action bar launches. I only
want the Contextual action bar to launch on the initial 'long click' same
as it does in portrait mode.
I checked how Google are doing this and in GMAIL inbox landscape on a
tablet, single click highlights the item in the list and displays the email
in the detail 'frame'. a 'long click' launches the CAB for the line you
selected. You can continue to single click on lines to see the details but
you 'long click' to add items to the CAB. Interestingly the cell
background is different based on whether it is selected or long clicked in
the CAB.
The contextual action bar is configured as follows
getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
getListView().setMultiChoiceModeListener(multiChoiceModeListener);
The code for the multiCoiceModeListener is as follows
MultiChoiceModeListener multiChoiceModeListener = new
MultiChoiceModeListener() {
@Override
public void onItemCheckedStateChanged(ActionMode mode, int position,
long id, boolean checked) {
mListener.removeFragmentWhenCABStarted();
if (checked) {
++mNumberOfSelectedItems;
} else {
--mNumberOfSelectedItems;
}
// Refresh the menu - Edit is only available when one item is
// selected
mode.invalidate();
mode.setTitle(String.valueOf(mNumberOfSelectedItems) + " selected");
}
@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:
confirmDelete();
return true;
case R.id.menu_edit:
edit();
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.main_fragment_context_menu, menu);
mode.setTitle(String.valueOf(mNumberOfSelectedItems) + " selected");
mActionMode = mode;
return true;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
mNumberOfSelectedItems = 0;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
menu.findItem(R.id.menu_delete).setVisible(true);
menu.findItem(R.id.menu_edit).setVisible(true);
if (mNumberOfSelectedItems > 1) {
menu.findItem(R.id.menu_edit).setVisible(false);
}
return true;
}
};
So to the questions.
1. How would you control the CAB based on Long Holds the way Google are
doing it?
2. How can I select a line (or change its background) without launching the
CAB?
3. Am I over thinking this and you have a much easier solution
Any assistance would be appreciated.
Thanks,
Jim
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