listview

问题 I would like to change an item background color when clicked, in a simple listView. Here's my code: boolean[] selectedItem = new boolean[listElement.length] final ArrayList<String> list1 = new ArrayList<>(); Collections.addAll(list1, listElement); final ListView mylist = (ListView) findViewById(R.id.listView); final ArrayAdapter<String> adapter = new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, list1); mylist.setAdapter(adapter); mylist.setOnItemClickListener(new AdapterView

问题 I have ListView which have data . Data come from server and I want the ListView to update after every 5 sec. How to do this? I am new to android development. Please help me. Here is my code... protected void showList() { try { JSONObject jsonObj = new JSONObject(myJSON); peoples = jsonObj.getJSONArray(TAG_RESULTS); for (int i = 0; i < peoples.length(); i++) { JSONObject c = peoples.getJSONObject(i); String data = c.getString(TAG_DATA); final String dataaaa = rcdata.getText().toString().trim()

问题 I have ListView which have data . Data come from server and I want the ListView to update after every 5 sec. How to do this? I am new to android development. Please help me. Here is my code... protected void showList() { try { JSONObject jsonObj = new JSONObject(myJSON); peoples = jsonObj.getJSONArray(TAG_RESULTS); for (int i = 0; i < peoples.length(); i++) { JSONObject c = peoples.getJSONObject(i); String data = c.getString(TAG_DATA); final String dataaaa = rcdata.getText().toString().trim()

问题 I am trying to change the ActionBar's action depending on wether all list items are visible (there's less items that fit to the screen => show "Add item" action | there are some items invisible => show "Search" action) What method of ListFragment should I override in order to be able to use getListView().getLastVisiblePosition() and get not -1? This is the code from my ListFragment, but in onCreateOptionsMenu lv.getLastVisiblePosition() always returns -1. @Override public void

问题 I am trying to change the ActionBar's action depending on wether all list items are visible (there's less items that fit to the screen => show "Add item" action | there are some items invisible => show "Search" action) What method of ListFragment should I override in order to be able to use getListView().getLastVisiblePosition() and get not -1? This is the code from my ListFragment, but in onCreateOptionsMenu lv.getLastVisiblePosition() always returns -1. @Override public void

问题 My purpose is a list in a list like this: -alllist-------- ----row--------- ----row--------- -----(list)----- -------textview -------textview ---row--------- -----(list)---- ..... MainAdapter Class is working fine with other elements but PlaceAdapter is adding only the first (or last, I couldn't figure) item to the 'nested' list. What is the problem? MainAdapter: @Override public View getView(int position, View convertView, ViewGroup parent) { PlaceHolder placeHolder = null; if (convertView =

问题 Hi I need to have a list view which is separated by date which native component i should use in android?can zou help me mazbe with some links, how to do it.I have an list activity coded, and working fine.thanks or maybe some dropdown box if is better i mean sthink like that: 回答1: An ExpandableListView with custom group and child layout and disabled collapsing would be the simplest solution for you. The list of groups would be the dates, the list of children would be the childLists (for each

问题 I have a question that I would love to get an answer on. I have two arrays, let's say: String[] name = {"Name Nameson", "Second Name"}; String[] number = {"111 11 111", "222 22 222"}; I want my ListView to have two TextViews into one item.(I tried to illustrate this with a picture). I manage to get f.ex. my name array into the listview with a simple lv.setAdapter(new ArrayAdapter<String>(this, R.layout.single_name, name)); I have my main.xml with my ListView in it, single_name.xml and single

问题 I have two activity.I wanna Send the data from second activity to previous activity.First activity have custom List view and bean class.When was i click on second activity,Fist activity fetch the data in form of String.My problem is how i will display the fetch data on custom listview My First actvity is.. package com.firstchoicefood.phpexpertgroup.firstchoicefoodin; import android.app.ActionBar; import android.app.ProgressDialog; import android.content.Intent; import android.content.res

问题 I am creating a popup window with a listview. In the listview each row contains a textbox and radio button but the popup window not displaying. I can't figure out the mistake. This is the code. import java.util.List; import java.util.Vector; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.SharedPreferences; import android.graphics.Typeface; import android.os.Bundle; import android.preference.PreferenceManager; import android