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Android Implementing Designs for Android Updating Other GridViews Updating the Recipients Activity

Marcio Almeida
Marcio Almeida
4,579 Points
Posted by Marcio Almeida
Marcio Almeida
4,579 Points

I dont understand why is always giving an error: mInviteMenuItem.setVisible(true);

In the challenge Hide Menu Item, is always given me an error. Here is the code I write:

if(mGridView.getCheckedItemCount()>0{

       mInviteMenuItem.setVisible(true);

}

5 Answers

Marcio Almeida
Marcio Almeida
4,579 Points
Marcio Almeida
Marcio Almeida
4,579 Points

Thank you Harry.

I finish the challenge!!

Harry James
Harry James
14,780 Points
Harry James
Harry James
14,780 Points

Woohoo! Glad you completed it!

If I answered your question, please mark my answer as the Best Answer so that other users know that this post has been answered.

Harry James
Harry James
14,780 Points
Harry James
Harry James
14,780 Points

Hey Marcio!

It looks like it's just a silly mistake and you've missed out a bracket on your first line!

This:

if(mGridView.getCheckedItemCount()>0{

should look like this:

if(mGridView.getCheckedItemCount()>0) {

(I added another bracket at the end of the >0)

Hope it helps! :)

Marcio Almeida
Marcio Almeida
4,579 Points
Marcio Almeida
Marcio Almeida
4,579 Points

Thanks for the quick answer, but after fix that error, I still have an error on the code, and I dont´t know why.

The challenge is: "If mGridView.getCheckedItemCount() is greater than 0, set the visibility of mInviteMenuItem to be visible. (Use the correct constant from the View class!)"

and I give this answer:

 if(mGridView.getCheckedItemCount()>0){
                mInviteMenuItem.setVisible(true);
            }

and is given me the error:

./InviteActivity.java:36: error: cannot find symbol
                mInviteMenuItem.setVisible(true);
                               ^
  symbol:   method setVisible(boolean)
  location: variable mInviteMenuItem of type MenuItem
1 error

Thank you for your help

Márcio

Harry James
Harry James
14,780 Points
Harry James
Harry James
14,780 Points

Hey Marcio!

You're going to want to use setVisibility() and, read the question carefully because it tells you that "you should use the correct constant from the view class".

Hope this helps and if you're still stuck, give me a shout again and I'll tell you the answer (I try not to just write the answer straight off so that you can learn it yourself!) :)

Jery Althaf
Jery Althaf
5,818 Points
Jery Althaf
Jery Althaf
5,818 Points

Please help

if(mGridView.getCheckedItemCount() > 0){ mInviteMenuItem.setVisibility(0); } else{ mInviteMenuItem.setVisibility(1); }

doesn't work ?

Jery Althaf
Jery Althaf
5,818 Points
Jery Althaf
Jery Althaf
5,818 Points

Please help 

if(mGridView.getCheckedItemCount() > 0){
              mInviteMenuItem.setVisibility(0);
          }
          else{
            mInviteMenuItem.setVisibility(1);
          }

doesn't work ?

Harry James
Harry James
14,780 Points
Harry James
Harry James
14,780 Points

Hey Jery!

Can you please provide a Logcat log so that I can take a look at where the problem is?

Thanks in advance :)