get view id from oncontextitemselected

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旧巷少年郎
旧巷少年郎 2020-12-11 20:11

I\'ve several buttons registered for context menu

how do I know which button was clicked for the menu to appear?

below is the pseudocode that i\'ll be using.

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  • 2020-12-11 20:25

    If you are looking for the ID of your underlying data (provided by the adapter's getItemId(int)), then just add the following lines in the onContextItemSelected method:

    final AdapterView.AdapterContextMenuInfo info = 
      (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
    final long datasId = info.id    // get datas id
    
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  • 2020-12-11 20:35

    try this...

    @Override
    public boolean onContextItemSelected(MenuItem item)
     {
        if(item.getItemId()==SEND_AS_TEXT)
        {
            //code for send text
        } 
        else if(item.getItemId()==SEND_AS_IMAGE)
        {
           //code for send image
        }
        return super.onContextItemSelected(item);
    }
    
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  • 2020-12-11 20:36
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        item.getItemId();
        return super.onContextItemSelected(item);
    }
    
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  • 2020-12-11 20:38

    Ok, thanks alot for the help from the others which clear my doubts on the getItemId since it returns the ID that I assigned to the menu item. In my case, I wanted to know which button was clicked before the contextmenu was created.

    To do this, I simply create a long variable to store the button that was clicked. The ID of the button can be obtained as in the following:

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        // TODO Auto-generated method stub
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.setHeaderTitle("Send As..");
        menu.add(Menu.NONE, SEND_AS_TEXT, SEND_AS_TEXT, "Send As Text");
        menu.add(Menu.NONE, SEND_AS_IMAGE, SEND_AS_IMAGE, "Send As Image");
        btnId = v.getId(); //this is where I get the id of my clicked button
    }
    

    and later on I'll only need to refer to this btnId to do whatever I want.

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  • 2020-12-11 20:38

    I think it makes more sense to use the ID of the specific view. Say you've got an ListView populated of items containing your data, but in-between some of the items you've created separators/headers. You don't want the separators to handle clicks/long clicks.

    In some cases it's totally fine to just refer to "position" or MenuInfo.id, but depending on your data structure you might need more control.

    What you can do is to set ID's for the items/views within your ListView (view.setId(x), where x represents the ID/position for your data structure/object. Then, when creating a ContextMenu and handling selections within it do the following to read that ID out:

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
    
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
        int id = info.targetView.getId();
    
        // now you can refer to your data with the correct ID of yours
    }
    
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
        int id = info.targetView.getId();
    
        // now you can refer to your data with the correct ID of yours
    }
    
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