How can I add blank space to the end of a ListView?

问题

I have a number of elements in a ListView that scroll off the screen.

I would like there to be blank space at the end of the View. That is, the user should be able to scroll past the last element such that the last element is in the middle of the viewport.

I could use an OverScroller, but I think that would only enable the View to have a bouncy effect like one often sees on the iPhone.

Is there something I might have overlooked?

The scrolled-to-the-botton screen should look something like this:

回答1:

Inflate any layout of your choice (this could be an XML of and ImageView with no drawable and with set height and width of your choice)
Measure the screen height and create new LayoutParams and set the height of it to 1/2 of the screen height
Set the new layout params on your inflated view
Use the ListView's addFooterView() method to add that view to the bottom of your list (there is also an addHeaderView())

Code to measure screen height

 WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
 Display display = wm.getDefaultDisplay();
 int screenHeight = display.getHeight();

Code to set half screen height:

 View layout = inflater.inflate(R.layout.mylistviewfooter, container, false);
 ViewGroup.LayoutParams lp = layout.getLayoutParams();
 lp.height = screenHeight/2;
 layout.setLayoutParams(lp);
 myListView.addFooterView(layout);

An Aside: When you add a footer or header view to any listview, it has to be done before adding the adapter. Also, if you need to get your adapter class after doing this you will need to know calling the listview's adapter by getAdapter() will return an instance of HeaderViewListAdapter in which you will need to call its getWrappedAdapter method Something like this :

 MyAdapterClassInstance myAdapter = (MyAdapterClassInstance) ((HeaderViewListAdapter) myListView.getAdapter()).getWrappedAdapter();

回答2:

The accepted answer is too complicated, and addFooterView is not for this kind of thing. The proper and simpler way is to set the paddingTop and paddingBottom, and you need to set clipToPadding to "false". In your list view or grid view, add the following:

    android:paddingTop="100dp"
    android:paddingBottom="100dp"
    android:clipToPadding="false"

You'll get blank space at the top and the bottom that moves with your finger scroll.

回答3:

this 100% works. in adapter set your code like this

   //in getCount
   @Override
   public int getCount() {
   return ArrayList.size()+1;
      }
    //in getview make your code like this
    public View getView(final int i, View view, ViewGroup viewGroup) {

    view = inflter.inflate(R.layout.yourlayout, null);

    if(i<getCount()-1) {
     //your code
    }
    else{
    ViewGroup itemContainer =(ViewGroup) view.findViewById(R.id.container);
                itemContainer.setVisibility(View.INVISIBLE);
    }

    Return view;
    }

回答4:

if you have multiple listviews in your app, create an xml of a footer, something like this:

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:minHeight="200dp"
android:layout_width="match_parent"
android:layout_height="200dp"></LinearLayout>

and then in the code, use this:

listView.addFooterView(LayoutInflater.from(getActivity()).inflate(R.layout.empty200, null));

回答5:

Try the followings:

View footer = new View(getActivity());
footer.setLayoutParams( new AbsListView.LayoutParams( LayoutParams.FILL_PARENT, 100 )); 
// 100 is the height, you can change it.
mListView.addFooterView(footer, null, false);

来源：https://stackoverflow.com/questions/13366281/how-can-i-add-blank-space-to-the-end-of-a-listview

标签

android

listview

user-interface

android-listview

padding