android-listfragment

问题 I am trying to change the ActionBar's action depending on wether all list items are visible (there's less items that fit to the screen => show "Add item" action | there are some items invisible => show "Search" action) What method of ListFragment should I override in order to be able to use getListView().getLastVisiblePosition() and get not -1? This is the code from my ListFragment, but in onCreateOptionsMenu lv.getLastVisiblePosition() always returns -1. @Override public void

问题 I am trying to change the ActionBar's action depending on wether all list items are visible (there's less items that fit to the screen => show "Add item" action | there are some items invisible => show "Search" action) What method of ListFragment should I override in order to be able to use getListView().getLastVisiblePosition() and get not -1? This is the code from my ListFragment, but in onCreateOptionsMenu lv.getLastVisiblePosition() always returns -1. @Override public void

问题 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="100dip" android:padding="6dip" > <ImageView android:id="@+id/img_icon" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentBottom="true" android:layout_alignParentTop="true" android:layout_marginRight="6dip" android:contentDescription="Image" />

问题 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="100dip" android:padding="6dip" > <ImageView android:id="@+id/img_icon" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentBottom="true" android:layout_alignParentTop="true" android:layout_marginRight="6dip" android:contentDescription="Image" />

问题 My app contains 3 tabs.All the tabs contains List so I have used ListFragment. There is a button in each ListItem. I want to do " something " when " Click " button is clicked within the ListItem as shown in the figure. How do I implement this. There are tuts about doing same thing for ListActivity but not ListFragment .Thanks in advance. :) 回答1: First of all, you need to implement a custom adapter for your ListView. Please, read this article if you are not familiar with this. Next, you have

问题 There are some similar answers, but not to this situation. My situation is simple. I have an Activity with two different layouts, one in Portrait, another in Landscape. In Portrait , i use <FrameLayout> and add Fragment into it dynamically . In Landscape , i use <fragment> so the Fragment is static . (in fact this doesn't matter) It first starts in Portrait , then i added the Fragment by simply: ListFrag listFrag = new ListFrag(); getSupportFragmentManager().beginTransaction() .replace(R.id

问题 I have an EditText inside the ListView of 20 rows. I want the text of all the Edittext text on clicking of the button. The App gets crash giving the NullPointerException Error on clicking of the button.This gives value for first 11 rows.. after this it gets crashed as I think this is scrolled down view . complete adapter code @SuppressLint("NewApi") public class CustomAdapter extends BaseAdapter implements OnClickListener { /*********** Declare Used Variables *********/ private Activity

问题 I use a fragment activity to hold a list fragment which renders a bunch of products: public class ProductsListActivity extends SherlockFragmentActivity { @Override public void onCreate(Bundle savedInstanceState) { setTheme(R.style.Sherlock___Theme); super.onCreate(savedInstanceState); setContentView(R.layout.fragment_products_list); // setFastScrollEnabled(true) ? } } ... <!-- fragment_products_list.xml --> <?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android

问题 I have a ListFragment whose list should diplay the Albums of the device and the associated artist using MediaStore . Each row has thus two TextViews . I'm using LoaderManager and CursorLoader to fill the list up, with a custom CursorAdapter in order to bind the TextViews of the row to the data. ListFragment Code : public class AlbumsFragment extends ListFragment implements LoaderManager.LoaderCallbacks<Cursor> { AlbumsAdapter mAdapter; @Override public View onCreateView(LayoutInflater

问题 I am trying to show elements in a list view using Fragments. I created my custom view as follow graphical representation of list_row.xml list_row.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:padding="5dip" > <!-- ListRow Left sied Thumbnail image --> <LinearLayout