android-arrayadapter

问题 I have a listview that refreshed every 5 secs, using a XML parsing. After refreshing, the current position of the list go back to first position. Is there any possible ways to solve this? 回答1: By using setAdapter() to update a list Android resets the position. Try altering the Adapter instead. I don't know which adapter you're using so here two examples. ArrayAdapter adapter = list.getAdapter(); if (adapter == null) { // Create new adapter + list.setAdapter() } else { adapter.clear(); adapter

问题 I am trying to create a spinner, the values of which I am populating from a resource xml, using ArrayAdapter. I also want to give the resource items some "id" or "value". How can i retrieve these values inside the onItemSelected() callback ? Here is the Java code. package com.waus.waus; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import

问题 I've been trying to figure how the ArrayAdapter class can be used, and from the docs : http://developer.android.com/reference/android/widget/ArrayAdapter.html, I see the constructor expects an integer called textViewResourceId. What is this exactly? Edit: From a little more research and the answers here, it looks like it must be the id of a TextView that I defined in the xml file that contains the interface code. But I saw this example here: ArrAdapter = new ArrayAdapter(this,android.R.layout

问题 I am getting an ArrayIndexOutOfBoundsException with the given below custom implementation of an ArrayAdapter with filtering enabled. I see the filtering code returning the correct resultset, but when view is rendered after filtering, I get an exception. What am I doing wrong here. Any help is appreaciated. import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android

问题 I am creating the custom list activity. There are two classes one is having extended ListActivity and other is having ArrayAdapter for that list activity. Problem 1: The problem is that while opening the ListActivity screen i have Search box on top of it. When i start the ListActivity it automatically opens the KeyBoard as current focus is on EditText . I want to stop that. Problem 2: Also when focus goes on EditText the ArrayAdapter's getView() method is getting called automatically which is

问题 I struggle with a common problem however I can't see the solution to it. What I'm trying to achieve is to display the list of questions (they come from parsed JSON) and radioGroup under each. I've manage to get questions list displayed. Now when I check the buttons and scroll down the list the upper buttons are loosing it state. I have followed and read about getView() and tryed different ways: stackoverflow.com/...how-to-handle-oncheckedchangelistener-for-a-radiogroup-in-a-custom-listview

问题 I've been working through the Commonsware Android Programming Tutorials and in tutorial 5, extra credit 2, the challenge is to use multiple layouts for displaying rows in a ListView depending on the "type name" of the object (a Restaurant's "type" attribute, which is a String). As such, it suggests overriding getItemViewType and getViewTypeCount in a custom ArrayAdapter. In addition, the android docs and other online recipes or blog posts suggest the same. In this situation, following this

问题 I have created a layout which includes a ListView. The data shown within this ListView isn't too complicated, it's mostly an Array which is passed when the extended Activity is started. The rows themselves exist out of an icon and a text, thus an ImageView and a TextView. To fill up the ListView I use an ArrayAdapter simply because an Array is passed containing all the text-items that should be shown. Now I'd like to actually be able to filter those, thus I found the android:textFilterEnabled

问题 I'm trying to add/remove dynamically fragments in a ViewPager following a button click, but if I remove the fragment (a form) by clicking on back button, and add the fragment again, the form has kept its data (EditText not empty). Here is my adapter : package com.thomas.playlists.viewPager; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import java.util.ArrayList; public class ViewPagerAdapter extends

问题 I have a list view that has multiple textview's like this: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical"> <TextView android:id="@+id/name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="16dip" android:textColor="#000000" android:paddingLeft="10dip" android:textStyle="bold"/> <TextView android:id="@+id/address" android