android - Change Height of a Listview dynamicallyAndroid

Question

The format of my XML file is as following:

 LinearLayout 

     ScrollView

         RelativeLayout

             LinearLayout

             <ListView
               android:id="@android:id/list"
               android:layout_width="match_parent"
               android:layout_height="fill_parent"
               android:layout_margin="5dip"
               android:layout_weight="30" >
             </ListView>

             LinearLayout

Here is my BaseAdapter class

public class APIQuickCheckoutProductProvider extends BaseAdapter {

private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater = null;

public APIQuickCheckoutProductProvider(Activity a, ArrayList<HashMap<String, String>> d) {
    activity = a;
    data = d;
    inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

public int getCount() {
    return data.size();
}

public Object getItem(int position) {
    return position;
}

public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View vi = convertView;
    if (convertView == null)
        vi = inflater.inflate(R.layout.product_item, null);

    TextView brand = (TextView) vi.findViewById(R.id.brands); 
    TextView quantity_name = (TextView) vi.findViewById(R.id.quantity_name); 

    TextView price = (TextView) vi.findViewById(R.id.price); 

    HashMap<String, String> product = new HashMap<String, String>();
    product = data.get(position);

    // Setting all values in listview
    brand.setText(product.get(APIQuickCheckout.KEY_BRAND));
    quantity_name.setText(product.get(APIQuickCheckout.KEY_QUANTITY_NAME));
    price.setText(product.get(APIQuickCheckout.KEY_PRICE));

    return vi;
}
}

Here is the main class where I set the adapter:

adapter = new APIQuickCheckoutProductProvider(APIQuickCheckout.this, productList);
lv.setAdapter(adapter);
adapter.notifyDataSetChanged();

And finally here is the each individual row which i set to the listview

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

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="0dip"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="5dip"
    android:layout_weight="7"
    android:weightSum="6" >

    <TextView
        android:id="@+id/brands"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:layout_weight="3" />

    <TextView
        android:id="@+id/quantity_name"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:layout_weight="3" />
  </LinearLayout>

  <LinearLayout
    android:layout_width="0dip"
    android:layout_height="wrap_content"
    android:layout_weight="1" />

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="0dip"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="5dip"
    android:layout_weight="2"
    android:weightSum="6" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="0dip"
        android:layout_weight="3" />

    <TextView
        android:id="@+id/price"
        android:layout_width="wrap_content"
        android:layout_height="0dip"
        android:layout_weight="3" />
   </LinearLayout>

 </LinearLayout>

However, when I am trying the above mentioned code it displays the first product, and I can see only the top of the second product.And I can see nothing from then and on. So, how can I change the height of the ListView dynamically when I add a new product? In order to display all of them.

score 17 · Accepted Answer

If you want to change the height of list view dynamically, you could use,

list.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, theSizeIWant));

score 3 · Accepted Answer

import android.view.ViewGroup.LayoutParams;

 ListView mListView = (ListView)   findViewById(R.id.listviewid);
 LayoutParams list = (LayoutParams) mListView.getLayoutParams();
   list.height = set the height acc to you;//like int  200
   mListView.setLayoutParams(list);

score 2 · Accepted Answer

Try this answer,

public static void setListViewHeightBasedOnChildren(final ListView listView) {
    listView.post(new Runnable() {
        @Override
        public void run() {
            ListAdapter listAdapter = listView.getAdapter();
            if (listAdapter == null) {
                return;
            }
            int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();
            int listWidth = listView.getMeasuredWidth();
            for (int i = 0; i < listAdapter.getCount(); i++) {
                View listItem = listAdapter.getView(i, null, listView);
                listItem.measure(
                        View.MeasureSpec.makeMeasureSpec(listWidth, View.MeasureSpec.EXACTLY),
                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));


                totalHeight += listItem.getMeasuredHeight();
                Log.d("listItemHeight" + listItem.getMeasuredHeight(), "___________");
            }
            ViewGroup.LayoutParams params = listView.getLayoutParams();
            params.height = (int) ((totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1))));
            listView.setLayoutParams(params);
            listView.requestLayout();

        }
    });
   }

score 1 · Accepted Answer

1

Its not recommended to use ListView inside of a ScrollView

于 2012-12-24T11:42:12.913 回答

score 1 · Accepted Answer

You can use below method to set the height of listview programmatically:

<ListView
        android:id="@+id/lvMenu"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ffffff"
        />

Method used for setting height of listview:

public static boolean setListViewHeightBasedOnItems(ListView listView) {

        ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter != null) {

            int numberOfItems = listAdapter.getCount();

            // Get total height of all items.
            int totalItemsHeight = 0;
            for (int itemPos = 0; itemPos < numberOfItems; itemPos++) {
                View item = listAdapter.getView(itemPos, null, listView);
                float px = 500 * (listView.getResources().getDisplayMetrics().density);
                item.measure(View.MeasureSpec.makeMeasureSpec((int)px, View.MeasureSpec.AT_MOST), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
                totalItemsHeight += item.getMeasuredHeight();
            }

            // Get total height of all item dividers.
            int totalDividersHeight = listView.getDividerHeight() *
                    (numberOfItems - 1);
            // Get padding
            int totalPadding = listView.getPaddingTop() + listView.getPaddingBottom();

            // Set list height.
            ViewGroup.LayoutParams params = listView.getLayoutParams();
            params.height = totalItemsHeight + totalDividersHeight + totalPadding;
            listView.setLayoutParams(params);
            listView.requestLayout();
            return true;

        } else {
            return false;
        }

    }

Then set it like below code:

 MenuAdapter menuAdapter = new MenuAdapter(context, R.layout.menu_item);
            lvMenu.setAdapter(menuAdapter);
            setListViewHeightBasedOnItems(lvMenu);

score 0 · Accepted Answer

this class can be use to expand the height of listview or gridview at runtime ,please put it in your package and use by passing listview

public class CustomView {

        public static void getListViewSize(ListView myListView) {
            ListAdapter myListAdapter = myListView.getAdapter();
            if (myListAdapter == null) {
                //do nothing return null
                return;
            }
            //set listAdapter in loop for getting final size
            int totalHeight = 0;
            for (int size = 0; size < myListAdapter.getCount(); size++) {
                View listItem = myListAdapter.getView(size, null, myListView);
                listItem.measure(0, 0);
                totalHeight += listItem.getMeasuredHeight();
            }
            //setting listview item in adapter
            ViewGroup.LayoutParams params = myListView.getLayoutParams();
            params.height = totalHeight + (myListView.getDividerHeight() * (myListAdapter.getCount() - 1));
            myListView.setLayoutParams(params);
            // print height of adapter on log
            Log.i("height of listItem:", String.valueOf(totalHeight));
        }



        public static void getGridViewSize(GridView myGridView) {
            ListAdapter myListAdapter = myGridView.getAdapter();
            if (myListAdapter == null) {
                //do nothing return null
                return;
            }
            //set listAdapter in loop for getting final size
            int totalHeight = 0;
            int maxHeight = 0;//implement new 
            for (int size = 0; size < myListAdapter.getCount(); size++) {
                View listItem = myListAdapter.getView(size, null, myGridView);

                listItem.measure(0, 0);

                totalHeight += listItem.getMeasuredHeight()+8;

                if(maxHeight < listItem.getMeasuredHeight()){//implement new 

                    maxHeight = listItem.getMeasuredHeight()+8;
                    System.out.println(" max height of gridview item<11>  "+size+"  ==  "+maxHeight);
                }

                System.out.println(myListAdapter.getCount()+"  height of gridview item<22>  "+size+"  ==  "+listItem.getMeasuredHeight());
            }

            //setting listview item in adapter
             ViewGroup.LayoutParams params = myGridView.getLayoutParams();

            if(myListAdapter.getCount() > 1)
                params.height = maxHeight * ((myListAdapter.getCount()+1)/2);//implement new
            else
                params.height = maxHeight;//implement new

             myGridView.setLayoutParams(params);

        }


    }

score 0 · Accepted Answer

public class Utility {
    public static void setListViewHeightBasedOnChildren(ListView listView) {
        ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter == null) {
            // pre-condition
            return;
        }

        int totalHeight = 0;
        int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.AT_MOST);
        for (int i = 0; i < listAdapter.getCount(); i++) {
            View listItem = listAdapter.getView(i, null, listView);
            listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
            totalHeight += listItem.getMeasuredHeight();
        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
        listView.setLayoutParams(params);
        listView.requestLayout();
    }
}

score 0 · Accepted Answer

 <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

<LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1">
            <ListView
                android:id="@+id/lv_premimum_upgrade"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/custom_margin"
                android:minHeight="48dp">
            </ListView>
        </LinearLayout> 

</ScrollView>

int list_cell_size=188;    // cell_size is varible 
ViewGroup.LayoutParams list;
list = (ViewGroup.LayoutParams) listView.getLayoutParams();
list.height = list_cell_size*response.size();  // response is list items size
listView.setLayoutParams(list);

android - Change Height of a Listview dynamicallyAndroid

8 回答 8

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