Lecture 29: Android Context Menu with Example

Android Context Menu with Example:
In android, Context Menu is like a floating menu and that appears when the user performs a long press or click on an element and it is useful to implement actions that affect the selected content or context frame.
The android Context Menu is more like the menu which displayed on right-click in Windows or Linux.
In android, the Context Menu offers actions that affect a specific item or context frame in the UI and we can provide a context menu for any view.
Create Android Context Menu in Activity:
The views which we used to show the context menu on long-press, we need to register that views using registerForContextMenu(View) in our activity.
Also, we need to override onCreateContextMenu() in our activity or fragment.
When the registered view receives a long-click event, the system calls our onCreateContextMenu() method.
By using the onCreateContextMenu() method, we can create our menu items.
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Context Menu");
menu.add(0, v.getId(), 0, "Upload");
menu.add(0, v.getId(), 0, "Search");
}
Handle Android Context Menu Click Events:
In android, we can handle a context menu item click events using the onContextItemSelected() method.
@Override
public boolean onContextItemSelected(MenuItem item) {
Toast.makeText(this, "Selected Item: " +item.getTitle(), Toast.LENGTH_SHORT).show();
if (item.getTitle() == "Save") {
// do your coding
}
return true;
}
We registered our Button control using registerForContextMenu() to show the context menu on button long-click and binding the Context Menu items using onCreateContextMenu() method.
Generally, during the launch of our activity, onCreate() callback method will be called by android framework to get the required layout for an activity.
Prof. A. M. Jagtap
MTech CSE