baseadapter

My app runs fine besides when the user stops using their phone long enough for the screen to lock, when they unlock it the app crashes and im a bit clueless as to why. Here is the error: here is the lazy adapter: package com.buhz.helpers; import java.util.ArrayList; import java.util.HashMap; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android

I have implemented an application with Custom base adapter for display data in list view.In my application i have displayed some content to list view by using Custom base adapter that content will come from web service.I have used a button for get the latest data from service.when i get the latest data from service then i would like to append the latest data to list view at bottom without deleting previous data in list view. I have implemented my application as follows: result = new ParseXml().convertMessages(new Model().getMessages("0")); count = Integer.parseInt(result.get(0).getMessageID())

Adapter在Android应用程序中起着非常重要的作用，应用也非常广泛，它可看作是数据源和UI组件之间的桥梁，其中Adapter、数据和UI之间的关系，可以用下图表示： BaseAdapter就Android应用程序中经常用到的基础数据适配器，它的主要用途是将一组数据传到像ListView、Spinner、Gallery及GridView等UI显示组件，它是继承自接口类Adapter。 在ListView的使用中，有时候还需要在里面加入按钮等控件，实现单独的操作。也就是说，这个ListView不再只是展示数据，也不仅仅是这一行要来处理用户的操作，而是里面的控件要获得用户的焦点。读者可以试试用SimpleAdapter添加一个按钮到ListView的条目中，会发现可以添加，但是却无法获得焦点，点击操作被ListView的Item所覆盖。这时候最方便的方法就是使用灵活的适配器BaseAdapter了。 使用BaseAdapter必须写一个类继承它，同时BaseAdapter是一个抽象类，继承它必须实现它的方法。BaseAdapter的灵活性就在于它要重写很多方法，看一下有哪些方法，如图4-35所示为继承自BaseAdapter的SpeechListAdapter所实现的方法，其中最重要的即为getView()方法。这些方法都有什么作用呢

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm trying to write BaseAdapter to my GrivView but in public View getView ( int position , View convertView , ViewGroup parent ) { ... } the position while rendering next elements is: visible elements --------------- | 1 2 3 | | 4 5 6 | <--- screen | 7 8 9 | --------------- nonvisible elements | 1 2 3 | <-- below visible area | 4 5 6 | where real is: visible elements --------------- | 1 2 3 | | 4 5 6 | | 7 8 9 | --------------- nonvisible elements | 10 11 12 | | 13 14 15 | I'm aware it's correct behaviour (it counts only visible

I am creating a custom list view using baseadapter.i have 10 list item in my list.my problem is that afetr 6 items ,the first 4 are repeating.i just printed position values in getview.it gives 0,1,2,3,4,5,6,7,8,9,0,1,2,3.My code is below. thanx in advance public class ProductListAdapter extends BaseAdapter implements OnClickListener{ /* * developer :sanu * date :10-4-2013 * time :3.34 pm */ public View row; private String[] productName; private String[] producttype; private String[] priceRangeFrom; private String[] priceRangeTo; private String[] productImage; private Activity activity; private

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have the following code public abstract class BaseAdapter<T, V extends BaseAdapter.ViewHolder> extends ArrayAdapter<T> { public BaseAdapter(Context context, int resource, Collection<T> collection) { // typical constructor logic } // some other custom defined methods public static class ViewHolder { // custom defined logic } } public class ModelAdapter extends BaseAdapter<Model, ModelAdapter.ModelViewHolder> { public ModelAdapter(Context context, int resource, Collection<Model> collection) { super(context, resource, collection); // typical