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9 Cards in this Set
- Front
- Back
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contextual action |
associated with a single view |
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recommended way to present contextual actions |
pre-honeycomb: floating context menu post-honeycomb: contextual action bar |
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general steps to create a pre-honeycomb floating context menu
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1. Create new xml file with menu as root element and item tags within it 2.Create code to inflate context menu 3. Register a view for the context menu 4. Override onContextItemSelected(...) |
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general steps to create post-honeycomb contextual action bar in listview or gridview |
1. Create new xml file with menu as root element and item tags within it 2. Set MultiChoiceModeListener 3. Create ActionModeCallback and implement lifecycle methods 4. Create List State Drawable resource to change appearance of views based on whether they're selected |
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pre-honeycomb floating context menu: if you have more than one context menu resource, how do you know which to inflate? |
check the id of the view passed to onCreateContextMenu(...) |
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Does a long-press of a view trigger a context menu by default? |
No. You must register a view to show a floating context menu public void registerForContextMenu(View view) //pass in the view in question |
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When a list view is in contextual action mode, can you allow for multiple item selection? |
yes |
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How do you change the background of a view based on its state? |
use a state list drawable, which is an XML resource where you have a drawable and then list the states it should appear in Live in the res/drawable directory |
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How do you implement contextual action bar for views other than a listview or gridview? |
1. set listener that implements View.OnLongClickListener 2. Within listener, create instance of ActionMode by calling Activity.startActionMode(...) 3. Create implementation of ActionModeCallback, including lifecycle methods |
