adapter

问题 My fragment activity used this adapter to display all the result in a listview. The page will have a title tab and each tab will have the list result. Now the list result I read from internal storage and each time I swipe to next page it will have slight lag or delay, so I am thinking implementing ASYNCTask inside this pageradapter so the experience will be better but I have no idea where to implement. Could you guys point me out?? public class ViewPagerAdapter extends PagerAdapter { public

问题 I have an android.R.layout.simple_list_item_multiple_choice with checkboxes an want so initiate some of them. How can I do that? I have the following code: private void fillList() { Cursor NotesCursor = mDbHelper.fetchAllNotes(); startManagingCursor(NotesCursor); String[] from = new String[] { NotesDbAdapter.KEY_TITLE, NotesDbAdapter.KEY_BODY, NotesDbAdapter.KEY_CHECKED }; int[] to = new int[] { android.R.id.text1, android.R.id.text2, //How set checked or not checked? }; SimpleCursorAdapter

问题 I'm setting the background color of a row based on a text value of one of it's children. However, multiple backgrounds are being set regardless of its text value. It gets worse when scrolling up and down. The code for the adapter: package com.test.app; import java.util.ArrayList; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView

问题 I've an activity(A) that has a Button and when the user press it, it will add an Object to static List . I've another activity(B) that has a ListView to show the content of the static list. In the activity(B) I want to use the attribute of an object that is stored in that static list in the specific row. How can I do that? My code is shown below: //Activity (A): Send.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { ... // Add to mycaseList All_Static.MyCaseList

问题 I am showing the list of contacts .All good except that device has 1620 contacts so list is scrolling very slow and even sometimes get hangs. I tried using a check in getView method for ConvertView!=null but it alwayz inflate same view many times. thanks in advance.. My code for getView method:- if(ConvertView==null) { view= mInflater.inflate(R.layout.facebookfriend, null); TextView name=(TextView)view.findViewById(R.id.textView1); ImageView image=(ImageView)view.findViewById(R.id.imageView1)

问题 I am using a Listview. before implementing OnLongClick, my onListItemClick was working perfectly, however now, after implementing OnLongClick the long clicks work and normal list clicks don't do anything. It seems to hide exposure to the onListItemClick() function you already have working can anyone see why/ suggest a solution? public class CombChange extends ListActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setListAdapter(new

问题 I've created a custom ListView. I've tried to optimize the getView method of my ListView's Adapter but I'm still experiencing lag. What am I doing wrong in the Adapter that causes my ListView to lag? Or if it looks good, what could be causing the lag? The xml of a row in the ListView is: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="6dip"

问题 I'm trying to do a navigation drawer menu with expandable elements like this --> http://goo.gl/SkMU8N I had no idea so I started by doing something like this one (not mine). https://github.com/PrashamTrivedi/DrawerLayoutTest The problem is that those rows are simple text and they looks horrible. I want to know how to modify the Adapter (or whatever) to attach my own xml files like you do with the normal drawer (example here --> http://goo.gl/phAJy). Thanks a lot!! 回答1: Here an example of

问题 The data is in a Database, so I would normally use CursorAdapter and have it work with CursorLoader on a ListView, however now I need a ViewPager instead of a ListView and that takes a PagerAdapter and I only have it have seen it work with lists. Is there a native pager adapter that uses a cursor or ill have to make it work? Thanks! 回答1: Based on the internals of the CursorAdapter I have an implementation that extends FragmentPagerAdapter with the only difference that you will use the

问题 How can I update ActionBar title from Adapter? I tried this: ((MainActivity) getActivity()).getSupportActionBar().setTitle(getString(R.string.home_item)); but this way only works within fragments. So I do this: ((MainActivity) view.getContext()).getSupportActionBar().setTitle(getString(R.string.home_item)); and get cast exception. I don't know how to do it. So it is possible to update ActionBar Title from Adapter? Thanks 回答1: pass the activity context in your adapter. Myadapter adapter = new