I have a GridView with an ArrayAdapter and I'd like to detect the context item selection and show a "Delete" option for deleting the object selected开发者_如何学Go. I fill the grid with imageviews correctly only need the detect the delete petition. My Code:
ArrayList<MyClass> array;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.maingrid);
array=Manager.getMyArray();
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new mArrayAdapter(this,array) );
registerForContextMenu(gridview);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
menu.add(0, DELETE_ID, 0 , R.string.delete);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch(item.getItemId()) {
case DELETE_ID:
return true;
}
return super.onContextItemSelected(item);
}
How can I guess whats the element of the array I have to remove? Thanks
In onContextItemSelected
try this:
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
you can get the selected item like this:
youradapter.getItem((int)info.id))
override the getItem()
function in the adapter to return the selected item..
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