Need to create Footer for Gridview in Android

问题:

See below layout. I am unable to put footer button below a GridView. Any help will be appreciate.

When Gridview fill in the screen Button is not displayed.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
 >

<GridView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/gridview"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:columnWidth="90dp"
    android:gravity="center"
    android:horizontalSpacing="10dp"
    android:numColumns="auto_fit"
    android:stretchMode="columnWidth"
    android:verticalSpacing="10dp" />

<Button
    android:id="@+id/button1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/gridview"
    android:text="Load More Images" />

 </RelativeLayout>

回答1:

I have been keeping searching for a long time for a GridView which allows us to addFooterView and addHeaderView like ListView.

It's a post 2 years ago. I come here by following the link in google search result. I don't know weather this problem has been solved or not.

If not, here is a library which may be helpful. https://github.com/liaohuqiu/android-GridViewWithHeaderAndFooter.

It's very simple:

GridViewWithHeaderAndFooter gridView = (GridViewWithHeaderAndFooter) v.findViewById(R.id.ly_image_list_grid);

LayoutInflater layoutInflater = LayoutInflater.from(this);
View headerView = layoutInflater.inflate(R.layout.test_header_view, null);
View footerView = layoutInflater.inflate(R.layout.test_footer_view, null);
gridView.addHeaderView(headerView);
gridView.addFooterView(footerView);

Here is a screen snapshot:

Hope this would be helpful. Good luck!

回答2:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
>  

 <GridView android:layout_height="match_parent" android:id="@+id/all_workouts_list" 
  android:columnWidth="90dp"
    android:gravity="center"
    android:horizontalSpacing="10dp"
    android:numColumns="auto_fit"
    android:stretchMode="columnWidth"
    android:verticalSpacing="10dp"  android:cacheColorHint="#ffffffff" 
    android:layout_width="match_parent" 
   android:layout_above="@+id/add_workout_all_workout_list"></GridView>

<Button android:layout_width="wrap_content"      
 android:id="@+id/add_workout_all_workout_list" android:layout_height="wrap_content" 
 android:text="Add Workout" android:layout_alignParentBottom="true"  
 android:layout_alignParentLeft="true"></Button>

</RelativeLayout>  

Works fine for me

回答3:

I managed to add footer to my gridview with a little trick. Lets say your adapters main data is List of MyDataInfo objects list, now when you passed all the data to adapter you can add two empty(null) objects and check in getView whether data is null or not and inflate desired view .

// in the adapter
public void addVoid(YourInfo info) {
    dataList.add(info);
    dataList.add(info);
    notifyDataSetChanged();
}
public View getView(int position, View convertView, ViewGroup parent) {
if (dataList.get(position) !=null) {
    View vi = convertView;
    ViewHolder holder;
    if (convertView == null || convertView.getTag().equals("stop")) {
        //inflate your gridview item
    }
    else {
        holder = (ViewHolder) vi.getTag();
    }


    // provide data to views

    return vi;
    }
    else {
        View v;
        if (position == dataList.size() - 2) {
            v = inflater.inflate(R.layout.show_more, null); // load more view
            v.setTag("stop");
        }
        else {
        v = inflater.inflate(R.layout.progress_bar, null); // progress bar
            v.setTag("stop");
        }
        return v;
    }

}

Before this in your main activity where you set adapter you'll have something like this

YourAdapter adap = new YourAdapter(this, dataList);
gridView.setAdapter(adap);
YourInfo info = null;
adapter.addVoid(info);

And important thing you'll have to handle onitemclick

int size = adapter.getCount();
public void onItemClick(AdapterView<?> parent,View view, int position, long id) {
    if (position == size - 2) {  // user selected SHOW MORE view
         int wantedPosition = size - 1;
         int firstPosition = grid.getFirstVisiblePosition();
     int wantedChild = wantedPosition- firstPosition;
         ProgressBar progBar = grid.getChildAt(wantedChild);
         progBar.setVisibility(View.Visible);
         return;
         }
    if (position == size - 1) // user selected progress bar 
         return;
    }

Hope this helps ^^

回答4:

Add to GridView two attributes:

• android:paddingBottom of the size as your Button;
• android:clipToPadding="false"

This will make some space for button at the bottom of the grid.

回答5:

Use the same as the below:

Edited:

<FrameLayout android:id="@+id/linear_Layout_List"
        android:layout_gravity="center_horizontal|top|bottom"
        android:layout_marginTop="90dip" android:orientation="vertical"
        android:layout_width="fill_parent" android:layout_height="fill_parent"
        android:layout_marginBottom="60dip" android:background="#E4E4E4">
        <GridView android:layout_width="fill_parent"
            android:layout_gravity="center_horizontal|top|bottom"
            android:columnWidth="90dp" android:numColumns="3"
            android:horizontalSpacing="10dp" android:stretchMode="columnWidth"
            android:gravity="center" android:id="@+id/Search_Result_Grid"
            android:background="#E4E4E4" android:focusable="true"
            android:verticalSpacing="10dp" android:layout_height="wrap_content"
            android:layout_marginBottom="45dip">
        </GridView>
        <Button android:id="@+id/txt_LoadMoreGrid"
            android:layout_width="fill_parent" android:layout_gravity="center_horizontal|bottom"
            android:layout_height="wrap_content" android:text="Load More...."
            android:clickable="true" android:textColor="#ffffff"
            android:visibility="invisible" android:background="@drawable/top_bar_bg"></Button>
    </FrameLayout>

and Call the onScroll method to hide the same as you want...........this implementation for LOAD MORE functionality in GridView.............It works for me.

grid.setOnScrollListener(new OnScrollListener() {

            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {


            }

            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

                System.out.println("The first visible Item:"+firstVisibleItem);
                if(width<=320 && height<=480)
                {
                if(firstVisibleItem+5==totalItemCount-1)
                {
                    /*FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.FILL_PARENT,FrameLayout.LayoutParams.WRAP_CONTENT,Gravity.NO_GRAVITY);
                        layoutParams.setMargins(0, 0, 0, 45);
                        grid.setLayoutParams(layoutParams);*/
                    tv_Load.setVisibility(tv_Load.VISIBLE);
                }
                else
                {
                    /* FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.FILL_PARENT,FrameLayout.LayoutParams.WRAP_CONTENT,Gravity.NO_GRAVITY);
                        layoutParams.setMargins(0, 0, 0, 0);
                        grid.setLayoutParams(layoutParams);*/
                        tv_Load.setVisibility(tv_Load.GONE);
                }
                }
                else
                {
                    if(firstVisibleItem+8==totalItemCount-1)
                    {
                        /*FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.FILL_PARENT,FrameLayout.LayoutParams.WRAP_CONTENT,Gravity.NO_GRAVITY);
                            layoutParams.setMargins(0, 0, 0, 45);
                            grid.setLayoutParams(layoutParams);*/
                        tv_Load.setVisibility(tv_Load.VISIBLE);
                    }
                    else
                    {
                        /* FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.FILL_PARENT,FrameLayout.LayoutParams.WRAP_CONTENT,Gravity.NO_GRAVITY);
                            layoutParams.setMargins(0, 0, 0, 0);
                            grid.setLayoutParams(layoutParams);*/
                            tv_Load.setVisibility(tv_Load.GONE);
                    }
                }
            }
        });

回答6:

Try adding the button first and putting the grid view on top of it. Something like this ought to work:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >

    <Button
        android:id="@+id/button1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="Load More Images" />

    <GridView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/gridview"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_above="@id/button1"
        android:columnWidth="90dp"
        android:gravity="center"
        android:horizontalSpacing="10dp"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth"
        android:verticalSpacing="10dp" />

</RelativeLayout>

EDIT

Based on your comments, I can see why the above does not work. Assuming you mean that you want the button to appear only after you scroll to the bottom (and not be on the screen the entire time), here's the layout I recommend:

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <GridView
            android:id="@+id/gridview"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:columnWidth="90dp"
            android:gravity="center"
            android:horizontalSpacing="10dp"
            android:numColumns="auto_fit"
            android:stretchMode="columnWidth"
            android:verticalSpacing="10dp" />

        <Button
            android:id="@+id/button1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Load More Images" />

    </LinearLayout>
</ScrollView>

回答7:

check if this helps

<Button
    android:id="@+id/button1"
    style="@android:style/ButtonBar"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:text="Load More Images" />