listview

问题 I have an Android app that allows the user to upload profile pics. They are stored 300px X 300px on the server. In the app, I use them in either 40dp X 40dp or sometimes 100dp X 100dp. The 40dp's images are in ListView 's. I actually use a very popular third party LazyList to store the images (using an ImageLoader class) in a cache. Here is the exact library. I simply show image in my adapter like this: imageLoader.DisplayImage(profileUrl, holder.iv1); I take the web URL and display it

问题 This question already has answers here : Why Android app crashes for initializing variable with findViewById(R.id.******) at the beginning of the class? (4 answers) What is a NullPointerException, and how do I fix it? (12 answers) Closed 1 year ago . I'm building a simple multi-activity list app to practice with SQLite. I was trying to get the strings from the database to display in the listview when this started. I'm getting the error java.lang.NullPointerException: Attempt to invoke virtual

问题 hi i need to toggle individual content in listview when the respective button is clicked in nativescript angular, i added bellow my code. if anyone know please answer me. thanks in advance import { Component, OnInit } from "@angular/core"; import { Item } from "./item"; import { ItemService } from "./item.service"; @Component({ selector: "ns-items", moduleId: module.id, templateUrl: "./items.component.html", }) export class ItemsComponent implements OnInit { items: Item[]; isList = true;

问题 hi i need to toggle individual content in listview when the respective button is clicked in nativescript angular, i added bellow my code. if anyone know please answer me. thanks in advance import { Component, OnInit } from "@angular/core"; import { Item } from "./item"; import { ItemService } from "./item.service"; @Component({ selector: "ns-items", moduleId: module.id, templateUrl: "./items.component.html", }) export class ItemsComponent implements OnInit { items: Item[]; isList = true;

问题 I have been working on an android project and stuck in a problem. I googled it but found no answer. In my project, there is a fragment named viewsurahfragment and it contains a listview whose id is lv_showquran . I want to highlight the view of the listview at specified index. I am using listview.getchildat() but it return null value. Here is the code for viewsurahfragment. Irrelevant functions are emited. public class ViewSurahFragment extends Fragment { private ListView listView; private

问题 I have been working on an android project and stuck in a problem. I googled it but found no answer. In my project, there is a fragment named viewsurahfragment and it contains a listview whose id is lv_showquran . I want to highlight the view of the listview at specified index. I am using listview.getchildat() but it return null value. Here is the code for viewsurahfragment. Irrelevant functions are emited. public class ViewSurahFragment extends Fragment { private ListView listView; private

问题 I'd like to create an inventory UI for my game using ListView, where the items can be removed from the inventory by dragging and dropping them in the level. If an item was not dropped properly (still inside the inventory), it should be placed back where it was before the drag. I've got the following code, but I don't know how to achieve what I'm after, even after looking at the Drag and Drop example. import QtQuick 2.3 Rectangle { id: root width: 400 height: 400 ListView { id: listView width:

问题 I am currently developing an Android project which makes use of a Homescreen Widget to display data to the user. The view that I used in the Widget is a ListView . Below are my codes: WidgetService Class public class WidgetService extends RemoteViewsService { @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { return (new WidgetRemoteViewsFactory(this.getApplicationContext(), intent)); } } WidgetProvider Class public class WidgetProvider extends AppWidgetProvider { @Override

问题 I am currently developing an Android project which makes use of a Homescreen Widget to display data to the user. The view that I used in the Widget is a ListView . Below are my codes: WidgetService Class public class WidgetService extends RemoteViewsService { @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { return (new WidgetRemoteViewsFactory(this.getApplicationContext(), intent)); } } WidgetProvider Class public class WidgetProvider extends AppWidgetProvider { @Override

问题 I have an XML file through PHP that I am trying to list a specific child "word" in ascending order in a div, according to the attribute "word". I put sort($word); without sucess Here is my code: <?php if(isset($_POST['submitSave'])) { // Disable errors due to empty xml files error_reporting(E_ALL & ~E_WARNING); $domDoc = new DOMDocument('1.0'); $domDoc->preserveWhiteSpace = false; $domDoc->formatOutput = true; $xpath = new DOMXpath($domDoc); // load xml file try { $domDoc->load('./data