android-listview

问题 I am repeatedly getting getting java.lang.IllegalArgumentException: column '_id' does not exist and app is getting crashed though I have included _ID in table columns and query. Here I am trying to extact the data from database and display the listview using custom cursor adapter. Table class public class StockTable { Context c1; DatabaseObject d1; Cursor c; StockTable(Context mcontext){ c1=mcontext; //---------------objects---------------------------// d1=new DatabaseObject(c1); //----------

问题 I am using this Tutorial for Creating a custom listview with radio button. In this tutorial when we click the item in the list then color of item change. This is happening when i am testing this code above 4.0 but below 4.0 it is not workin properly I am not understand why???? Class Blog.java public class Blog extends Activity { ListView listView; ArrayList< String>arrayList; // list of the strings that should appear in ListView ArrayAdapter arrayAdapter; // a middle man to bind ListView and

问题 I want to create a layout that will have n numbers of textview on the left side and have listView on the right side .And the top of right side have above listview i need to have to buttons .Something like this : |Button1||Button2| ------------------- |TEXTView|ListView | |TEXTView| | |TEXTView| | |TEXTView| | |TEXTView| | I tried something like this but it is not working for me <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android

问题 I'm doing my BlogApp. It gets all data from the Internet. I added three TextViews, but I have problem with getting images from JSON. I've tryed different ways but I still don't understand how exactly do this. Here is a part of my code: private void handleBlogResponse() { mProgressBar.setVisibility(View.INVISIBLE); if (mBlogData==null){ updateDisplayForError(); }else { try { JSONArray jsonPosts = mBlogData.getJSONArray("posts"); ArrayList<HashMap<String, String>> blogPosts = new ArrayList

问题 I have a main activity with a ListView. I then have a second activity with a text box for the user input and a button. When the user enters the input and clicks on the button, it should add the item to the ListView in the main activity but for some reason the ListView doesn't refresh with the new data. Any idea on how to go about this ? 回答1: Create an adapter class for your listView. class MyAdapter extends BaseAdapter { ArrayList<Item> items; // Override all other needed methods. //Add

问题 I have created a ListView that is populated with JSON data, and I have included OnItemClickListener to open a new Activity through Intent . What I'm trying to do is to make that new Activity generate data based on the item I have clicked in the ListView . For example, if I clicked item from JSON field name JohnDoe in the ListView , I want to generate page with information from another JSON data file. And concrete example would be like the Google Play Store. I click some app and it opens a

问题 I know that this question is asked many times.. But I cant get any proper solution, In my app I use AsyncTask for loading a image. I use AsyncTask because I want smooth scrolling listview.. and after implement AsyncTask My listView get smoothly scrolling.. But now problem is that Image is changing after scrolling... What should I do? MyAdapter Class package com.example.adapter; public class DisplayAllFeedAdapter extends ArrayAdapter<DisplayAllFeedItem> { private final List<DisplayAllFeedItem>

问题 I want to create Endless scroll view , list view data coming from server. i am created but when add new data then list view visible item started from start. And when add more than 70 rows then application crashed and error say array index out of bound. I am new in android i am not able to use git hub library. Please any one help me provide a simple example of endless list view or tutorial to use git hub library. there my asyn class code private class AlertSearchAsync extends AsyncTask<String,

问题 I need to make bounce effect to my listview in android.ie when I scroll down listview has to scroll beyond its starting point and the come back to its original position Please help.. 回答1: as you not posted your code(I think it is also not required as per your question). So I am giving a Custom Widget It is custom widget of listview (not that much complicated, just animation is added into it) use the library for your application. and also from that in PullToRefreshActivity there is mListItems

问题 package com.example.simpleasync; import java.util.ArrayList; import java.util.HashMap; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.app.ProgressDialog; import android.content.Context; import android.os.AsyncTask; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; public class ProgressTask extends AsyncTask<String, Void, Boolean> { private ProgressDialog