android-adapter | 易学教程

android - bindView and newView for two view layout in CursorAdapter

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问题 So here's the story: I want to use two layouts in my adapter. So basically, I need to have an if in the newView() to determine which view to return and and an if in bindView() to know as well what to do in the view. Is this the right approach? I'm thinking of something like this: @Override public View newView(Context context, Cursor c, ViewGroup parent) { if (HEADER == getItemViewType(c.getPosition())){ return (View) layoutInflater.inflate(R.layout.my_header, null); } else { return (View)

Android add/replace Items within RecyclerView

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问题 I know there are lots of threads already on this topic, but none of the given solutions worked for me so far. I'm trying to add or update an item of a RecyclerView . Here's my code so far: MainActivity private MyListItemAdapter mAdapter; private RecyclerView recyclerView; // called on activity create private void init() { // initialize activity, load items, etc ... mAdapter = new MyListItemAdapter(this, items); recyclerView.setAdapter(mAdapter); } // called when I want to replace an item

How to Perform Update and Delete operation in listview item row while Click the button in CursorAdapter

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With the help of sqlite database I am added the Cricket player name and finally it display the names in listview. I am added the Update and delete button in CustomCursorAdapter.java.Below I am posted the Adapter code for that: CustomCursorAdapter.java: import android.content.Context; import android.database.Cursor; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.CursorAdapter; import android.widget.TextView; public class CustomCursorAdapter extends CursorAdapter { public CustomCursorAdapter(Context

getting View for ListView item / reverse order on 2.2; works on 4.0.3

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I have a ListView which shows items from ArrayAdapter. I want to animate the view when it is cliked. The problem is that on different versions of android I am getting different views (see below) I'm getting the view from ListActivity using this method : private View getViewForListPosition(int position) { int firstPosition = mList.getFirstVisiblePosition() - mList.getHeaderViewsCount(); int wantedChild = position - firstPosition; ZLog.d(LOG,"getViewForListPosition , position : " + position + ", wantedChild : " + wantedChild + ", view hash : " +mList.getChildAt(wantedChild).hashCode()); for(int

Android Listview row repeating item

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I have a list where on specific number(position) that i get from shared preferences an imageview should be shown(indicates what song is currently playing) . But i get the position,but that item is showing on other rows as well. The problem is occurring when i scroll the list. *This is happening when i exit another activity, and on my on resume i to this: @Override protected void onResume() { super.onResume(); if(AlbumDetails.mediaPlayer!=null) adapter = new PlaylistAdapter(this, songs); list.setAdapter(adapter); } Here is my code: public class PlaylistAdapter extends BaseAdapter { private

How to apply multiple Filters on an Adapter?

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I got a listView with and a search field that calls my Adapter's getFilter().filter(keyword) func. It is working very nice, but i would like to add an other filter that searches in different tags of my listViews's objects. So i need two filters for my Adapter, whats the best solution for this? Thanks, I suppose that you implemented the filter yourself. As you cant get two filters you could have a field in the filter that defines what kind of filtering should by applied ( you could use multiple filters in your filter). Set you field of the filter to the value you want before using the filter.

Android Listview row repeating item

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问题 I have a list where on specific number(position) that i get from shared preferences an imageview should be shown(indicates what song is currently playing) . But i get the position,but that item is showing on other rows as well. The problem is occurring when i scroll the list. *This is happening when i exit another activity, and on my on resume i to this: @Override protected void onResume() { super.onResume(); if(AlbumDetails.mediaPlayer!=null) adapter = new PlaylistAdapter(this, songs); list

How to apply multiple Filters on an Adapter?

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问题 I got a listView with and a search field that calls my Adapter's getFilter().filter(keyword) func. It is working very nice, but i would like to add an other filter that searches in different tags of my listViews's objects. So i need two filters for my Adapter, whats the best solution for this? Thanks, 回答1: I suppose that you implemented the filter yourself. As you cant get two filters you could have a field in the filter that defines what kind of filtering should by applied ( you could use

Adding a footer view in RECYCLER VIEW?

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i want to add a footer layout at the base of the recycler view.Below is my adapter view which inflates header layout as well as other items as well.Help appreciated! public class SplitMembersAdapter extends RecyclerViewAdapter<SplitMember, SplitMemberViewHolder> { private final ArrayList<SplitMember> mSplitMembersList; private final ImageLoader mImageLoader; private static final int TYPE_HEADER = 0; private static final int TYPE_ITEM = 1; private int splitAmount; private boolean isAmountSplitted; public SplitMembersAdapter(ArrayList<SplitMember> members,ImageLoader imageLoader) {

How to Refresh ListView in Fragment that is filled with BaseAdapter?

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I want to Refresh a ListView in a Fragment when a Dialog is closed. Until now the refresh only works when I restart the app and I don't really know why. Here are the classes: This is the Fragment with the ListView on it, that i want to refresh, when the Dialog is closed. public class RegisterListFragment extends Fragment { public static final String TAG = "RegisterListFragment"; RegisterListAdapter adapter; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { setRetainInstance(true); // TODO Auto-generated method stub View view =