Questions Tagged with #Vertica

Vertica is a column-based database that runs on clusters of Linux servers. The Vertica Analytics Platform was part of HP Software's Big Data Platform called HP Haven and moved to Micro Focus. It is also available as a SaaS based solution called Vertica OnDemand. See the "hp-haven" tag for more related questions.

Highlight Anchor Links when user manually scrolls?

I apologize for the long post. I wanted to include everything that might be helpful. I have a single page website that consists of several divs stacked vertically. I'm using a floating nav bar and so..

strange error in my Animation Drawable

A strange error when trying to start Activity. i think the error in my Animation Drawable LogCat: 12-31 06:37:45.138: E/AndroidRuntime(922): FATAL EXCEPTION: main 12-31 06:37:45.138: E/Andr..

Uncaught Invariant Violation: Too many re-renders. React limits the number of renders to prevent an infinite loop

I'm trying to add a snackBar in order to display a message whenever a user signIn or not. SnackBar.jsx: import React from "react"; import PropTypes from "prop-types"; import classNames from "classnam..

Flutter: RenderBox was not laid out

I'm trying to create a ListView but when I import the list_form.dart class i get this error. Maybe I made some mistakes with the layout because if I try to run it inside the main file I don't get this..

Center content vertically on Vuetify

Is there a way to center content vertically in Vuetify? With the text-xs-center helper class, the content gets centered horizontally only: <v-container grid-list-md text-xs-center> <v-lay..

Flutter - The method was called on null

I'm programming an app that displays two media streams in the same view via one horizontal listView and one vertical listView. I'm currently working on implementing information into the bottom listVie..

Flutter : Vertically center column

How to vertically center a column in Flutter? I have used widget "new Center". I have used widget "new Center", but it does not vertically center my column ? Any ideas would be helpful.... @override ..

Flutter: Setting the height of the AppBar

How can I simply set the height of the AppBar in Flutter? The title of the bar should be staying centered vertically (in that AppBar)...

How do I center text vertically and horizontally in Flutter?

I'd like to know how to center the contents of a Text widget vertically and horizontally in Flutter. I only know how to center the widget itself using Center(child: Text("test")) but not the..

Failed linking file resources

This is the java file that is giving the error package com.example.daksh.timetable; import; import android.os.Bundle; import android.view.View; import androi..

How to Set/Update State of StatefulWidget from other StatefulWidget in Flutter?

For Example in the below code plus button works and able to update the text but the minus button does not. But if we press FloatingActionButton then the State is refreshed . The minus button is chang..

No provider for HttpClient

After upgrading from angular 4.4 to 5.0 and after updating all HttpModule and Http to HttpClientModule I started to get this error. I also added HttpModule again to be sure it's not due to some depe..

How to create a stacked bar chart for my DataFrame using seaborn?

I have a DataFrame df: df = pd.DataFrame(columns=["App","Feature1", "Feature2","Feature3", "Feature4","Feature5", "Feature6","Feature7","Feature8..

Bootstrap 4 - Inline List?

I migrated a site from Bootstrap 4 alpha 6 to Bootstrap 4 Beta 1. <ul class="nav navbar-nav list-inline"> <li class="list-inline-item"><a class="social-icon text-xs-center" target="..

Constraint Layout Vertical Align Center

How to vertically align and center objects in constraint layout? It is possible to align vertically or horizontally but I have not found a way to center at the same time beside constraining the views ..

Flutter - Wrap text on overflow, like insert ellipsis or fade

I'm trying to create a line in which center text has a maximum size, and if the text content is too large, it fits in size. I insert the TextOverflow.ellipsis property to shorten the text and inserti..

Failed to load AppCompat ActionBar with unknown error in android studio

Below is my xml file. In preview there is two error'Failed to load AppCompat ActionBar with unknown error' & 'Failed to instaniate more than one class'. How ever am able to run the app.But the app..

Error: the entity type requires a primary key

I would like to expand the question asked on this thread Binding listbox to observablecollection by giving it an ability to persistent the data. The structure is mostly the same except I installed E..

Bootstrap 4 Center Vertical and Horizontal Alignment

I have a page where only form exists and I want form to be placed in the center of the screen. <div class="container"> <div class="row justify-content-center align-items-center"> &l..

Vertical Align Center in Bootstrap 4

I am trying to center my Container in the middle of the page using Bootstrap 4. I have been unsuccessful thus far. Any help would be appreciated. I have built it at so you guys can play wi..

VSCode: How to Split Editor Vertically

In Visual Studio code, a while ago, when I used View->Split Editor, it would split vertically. (One file on the left and one file on the right.) I updated Visual Studio Code and when when I do View->..

Simple Android RecyclerView example

I've made a list of items a few times using Android's RecyclerView, but it is a rather complicated process. Going through one of the numerous tutorials online works (this, this, and this are good), bu..

Sublime text 3. How to edit multiple lines?

I was using Notepad++ and now I want to use the same cool features in Sublime but I don't know how. I want to edit multiple lines at the same time like this: But I don't want to Ctrl+Click at each ..

how to set start value as "0" in chartjs?

here is my code. i need to set initial value as "0" in both x and y axis scales. I have tried latest version scales option. graphOptions = { ///Boolean - Whether grid l..

This view is not constrained vertically. At runtime it will jump to the left unless you add a vertical constraint

New Layout editor in Android Studio 2.2 keeps showing this error on views like EditText and Buttons. kindly help.Also, any links that help in onboarding with the new constraint layout would be appreci..

ReactNative: how to center text?

How to center Text in ReactNative both in horizontal and vertical? I have an example application in where justifyContent="center" and alignItems="center" is not working: https://rnplay.or..

Change Spinner dropdown icon

The solutions I found to change the spinner dropdown icon where all: 1. create a custom drawable <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="

CSS3 100vh not constant in mobile browser

I have a very odd issue... in every browser and mobile version I encountered this behavior: all the browsers have a top menu when you load the page (showing the address bar for example) which slide ..

How to draw a line with matplotlib?

I cannot find a way to draw an arbitrary line with matplotlib Python library. It allows to draw horizontal and vertical lines (with matplotlib.pyplot.axhline and matplotlib.pyplot.axvline, for exampl..

How to remove title bar from the android activity?

Can someone please help me with the issue.I want my activity as full screen and want to remove title from the screen.I have tried several ways but not able to remove it. Activity Code : public clas..

How to add colored border on cardview?

I am new to Android and this is my first question here. I am trying to add a colored vertical border at the beginning of the cardview. How can I achieve it on xml ? I tried adding it with empty textv..

android: data binding error: cannot find symbol class

I am getting started for using DataBinding feature. I am facing problem with it. Error:(21, 9) error: cannot find symbol class ContactListActivityBinding build.gradle(Module: app) apply plugi..

What is the hamburger menu icon called and the three vertical dots icon called?

Google and some other developers have introduced us to what some have called the hamburger menu button and now the 3 vertical dots button or vertical ellipsis. What is the official name of these butt..

How to add a recyclerView inside another recyclerView

I'm planning to develop an app that shows some dynamic data inside a recyclerCardView. So i decided add a recyclerView called CheckBoxRecyclerView inside my main recyclerView. This is my code for my a..

android : Error converting byte to dex

So, I am getting the following error while running the project after upgrading build.gradle (Project) from dependencies { classpath '' // N..

Bootstrap 4 - Responsive cards in card-columns

I'm playing with Bootstrap 4 and I can't find a solution to add responsiveness to cards while in a div with class="card-columns" (this class applies a Masonry-like effect to the cards inside..

RecyclerView - Get view at particular position

I have an activity with a RecyclerView and an ImageView. I am using the RecyclerView to show a list of images horizontally. When I click on an image in the RecyclerView the ImageView in the activity s..

Chrome / Safari not filling 100% height of flex parent

I want to have a vertical menu with a specific height. Each child must fill the height of the parent and have middle-aligned text. The number of children is random, so I have to work with dynamic va..

In android how to set navigation drawer header image and name programmatically in class file?

In android studio 1.4.1, I have created new Navigation Drawer Project which is default.My issue is in this project there is nav_header_main.xml file which is for navigation header image and name. I wa..

Shrink to fit content in flexbox, or flex-basis: content workaround?

I have a webapp with which I'm using flexbox for layout. I'm trying to both fill the screen (it's an app, not a document), and as far as possible to not specify any fixed widths or heights as the con..

Recyclerview inside ScrollView not scrolling smoothly

For my app I am using a RecyclerView inside a ScrollView where the RecyclerView has a height based on its content using this library. Scrolling is working but it's not working smoothly when I scroll o..

In CSS Flexbox, why are there no "justify-items" and "justify-self" properties?

Consider the main axis and cross axis of a flex container:                        &..

Android:java.lang.OutOfMemoryError: Failed to allocate a 23970828 byte allocation with 2097152 free bytes and 2MB until OOM

I want to show the Bitmap image in ImageView from sd card which is stored already. After run my application is crash and getting OutOfMemoryError error of: (java.lang.OutOfMemoryError: Failed to a..

Changing text color of menu item in navigation drawer

I'm trying to add a night theme for my app and I've wasted nearly three hours just trying to make the text and icons in my navigation drawer turn white along with the dark background. Here is the way ..

Does React Native styles support gradients?

I see that someone made this for it: But is there support for it in RN itself? Something like style = StyleSheet.create({ backgroundGra..

RecyclerView and java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder in Samsung devices

I have a recycler view that works perfectly on all devices except Samsung. On Samsung, I'm get java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionView..

How do I change a tab background color when using TabLayout?

This is my code in the main activity public class FilterActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState)..

How to update RecyclerView Adapter Data?

Trying to figure out what is the issue with updating RecyclerView's Adapter. After I get a new List of products, I tried to: Update the ArrayList from the fragment where recyclerView is created, s..

How can a divider line be added in an Android RecyclerView?

I am developing an android application where I am using RecyclerView. I need to add a divider in RecyclerView. I tried to add - recyclerView.addItemDecoration(new DividerItemDecoration(getActiv..

How to use RecyclerView inside NestedScrollView?

How to use RecyclerView inside NestedScrollView? RecyclerView content is not visible after setting adapter. UPDATE layout code updated. < xmlns:android="..

Change the color of a checked menu item in a navigation drawer

I am using the new Android Design Support library to implement a navigation drawer in my application. I can't figure out how to change the color of a selected item! Here is the xml of the menu : &l..

Error inflating class

I followed a tutorial of new component NavigationView in Support Design Library and can't get through this error message : Error inflating class I tried..

Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

The problem is as follows. I have a login activity (in Android Studio) which worked fine a few days before. I don't remember changing anything but when I run this one the previous time the app closed ..

How can I scroll a div to be visible in ReactJS?

I have a popup list which is a div that contains a vertical list of child divs. I have added up/down keyboard navigation to change which child is currently highlighted. Right now, if I press the dow..

RecyclerView: Inconsistency detected. Invalid item position

Our QA has detected a bug: when rotating the Android device (Droid Turbo), the following RecyclerView-related crash happened: java.lang.IndexOutOfBoundsException: Inconsistency detected. Inv..

Vertical rulers in Visual Studio Code

How can vertical rulers (note the plural) be configured in Visual Studio Code? In Sublime Text 2 I can do "rulers": [72, 80, 100, 120] How does this work in Visual Studio? "editor.ruler": 80 p..

Change the Arrow buttons in Slick slider

I want to change the arrows in my slick slider but it does not change. I want the next and previous button as an image. I have tried putting it in a <style> but it still not working. Where can I..

Toolbar overlapping below status bar

I want to have appcompat v21 toolbar in my activity. But the toolbar I'm implementing is overlapping below status bar. How can I fix it? Here is the activity layout xml: <LinearLayout xmlns:and..

setSupportActionBar toolbar cannot be applied to (android.widget.Toolbar) error

I've been looking for an answer and I've tried many possible solutions, but nothing seems to work.. I'm trying to setup a Material Action Bar following this tutorial. Here's my code: tool_bar.xml: ..

How to make custom dialog with rounded corners in android

What I am trying to do: I am trying to make a custom dialog in android With rounded corners. What is happening: I am able to make custom dialog but it doesn't have rounded corners. I tried adding a s..

java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference

I'm trying to put together a shopping list app, based on input fields, ArrayList, and ListView. The app will be based on Fragments. However, I have encountered a problem and I do not know how to solve..

How to center div vertically inside of absolutely positioned parent div

I am trying to get blue container in the middle of pink one, however seems vertical-align: middle; doesn't do the job in that case. <div style="display: block; position: absolute; left: 50px; top:..

Null pointer Exception on .setOnClickListener

I am having an issue with a click listener for a login modal submit button. This is the error. Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button..

The specified child already has a parent. You must call removeView() on the child's parent first (Android)

I have to switch between two layouts frequently. The error is happening in the layout posted below. When my layout is called the first time, there doesn't occur any error and everything's fine. When ..

How to clear/delete the contents of a Tkinter Text widget?

I am writing a Python program in TKinter on Ubuntu to import and print the name of files from particular folder in Text widget. It is just adding filenames to the previous filnames in the Text widget,..

Vertical align in bootstrap table

I am trying to display a table with 4 columns, one of which is an image. Below is the snapshot:- I want to vertically align the text to the center position, but somehow the css doesn't seem to work. ..

Programmatically Add CenterX/CenterY Constraints

I have a UITableViewController that doesn't display any sections if there is nothing to show. I've added a label to indicate to the user that there is nothing to display with this code: label = UILa..

CardView not showing Shadow in Android L

My Cardview inside Listview is not showing shadow in Android L(Nexus 5). Also the round edges are not properly shown. Here is the code for Listview's Adapter View : <?xml version="1.0" encoding="u..

Android "elevation" not showing a shadow

I have a ListView, and with each list item I want it to show a shadow beneath it. I am using Android Lollipop's new elevation feature to set a Z on the View that I want to cast a shadow, and am alread..

How do I make WRAP_CONTENT work on a RecyclerView

I have a DialogFragment that contains a RecyclerView (a list of cards). Within this RecyclerView are one or more CardViews that can have any height. I want to give this DialogFragment the correct h..

What's the difference between display:inline-flex and display:flex?

I am trying to vertically align elements within an ID wrapper. I gave the property display:inline-flex; to this ID as the ID wrapper is the flex container. But there is no difference in presentation...

App crashing when trying to use RecyclerView on android 5.0

I'm trying to mess with the new RecyclerView and whenever I try to run it, my app immediately crashes. It gives me NullPointerException for trying to access methods from

NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference

I'm a newbie to Fragments and custom ListView adapters. Can anyone give me a hand please? I've got my Fragment where I have my ListView public class RecordingListFragment extends Fragment implements..

How to add buttons like refresh and search in ToolBar in Android?

I have made a ToolBar, but when I add menu items in menu.xml it always shows as an overflow. How do I add it separately? Moreover the Title is shown in the middle (vertically), how do I show it at t..

Nested Recycler view height doesn't wrap its content

I have an application that manage collections of books (like playlists). I want to display a list of collection with a vertical RecyclerView and inside each row, a list of book in an horizontal Recyc..

No shadow by default on Toolbar?

I'm updating my app with the new Toolbar from the support library v21. My problem is that the toolbar does not cast any shadow if I don't set the "elevation" attribute. Is that the normal behavior or ..

Error inflating class

I am trying to get Material Design for my App by following this method. Whenever I run the App it shows the following error: Error inflating class I checked..

Is there an addHeaderView equivalent for RecyclerView?

I'm looking for an equivalent to addHeaderView for a recycler view. Basically I want to have an image with 2 buttons be added as a header to the listview. Is there a different way to add a header view..

Error in styles_base.xml file - android app - No resource found that matches the given name 'android:Widget.Material.ActionButton'

Ok, so im a beginner in android development and I just created the hello world app. But it's giving me errors in styles_base.xml file of appcompat_v7 library. error: Error retrieving parent for i..

Toolbar navigation icon never set

I'm trying the new Toolbar component and having some trouble with the navigation icon. I want to implement a custom icon for back navigation : In my manifest i set a parent to my activity : <activi..

In android app Toolbar.setTitle method has no effect – application name is shown as title

I'm trying to create simple application using android-support-v7:21 library. Code snippets: public class MainActivity extends ActionBarActivity { Toolbar mActionBarToolbar; ..

Android RecyclerView addition & removal of items

I have a RecyclerView with an TextView text box and a cross button ImageView. I have a button outside of the recyclerview that makes the cross button ImageView visible / gone. I'm looking to remove a..

How to make a view with rounded corners?

I am trying to make a view in android with rounded edges. The solution I found so far is to define a shape with rounded corners and use it as the background of that view. Here is what I did, define a..

UICollectionView Self Sizing Cells with Auto Layout

I'm trying to get self sizing UICollectionViewCells working with Auto Layout, but I can't seem to get the cells to size themselves to the content. I'm having trouble understanding how the cell's size ..

CSS flexbox vertically/horizontally center image WITHOUT explicitely defining parent height

With only the parent div and the child img elements as demonstrated below how do I vertically and horizontally center the img element while explicitly not defining the height of the parent div? <d..

Bootstrap how to get text to vertical align in a div container

What is the best/proper way to vertically align the text in the middle of its column? The image height is statically set in the CSS. I have tried setting an outer div to display: table and an inner d..

Unity 2d jumping script

Does anyone have a good jumping script for 2d games in unity? The code I have works but still is far from jumping, it looks like it is flying. using UnityEngine; using System.Collections; public cla..

How to vertically align text inside a flexbox?

I would like to use flexbox to vertically align some content inside an <li> but not having great success. I've checked online and many of the tutorials actually use a wrapper div which gets the..

Android: Creating a Circular TextView?

My current simple XML is below, however i would like the 3 TextViews within it to be circular, rather than rectangular. How can I change my code to do so? <?xml version="1.0" encoding="utf-8"?>..

Fill remaining vertical space with CSS using display:flex

In a 3-row layout: the top row should be sized according to its contents the bottom row should have a fixed height in pixels the middle row should expand to fill the container The problem is that ..

Column/Vertical selection with Keyboard in SublimeText 3

I'm on a Mac. I have 7 columns in Sublime Text 3, each 300 lines each. If possible, I would like to select only the 4th column using a single keyboard shortcut. Unsuitable options ctrl + shift + u..

Flexbox not giving equal width to elements

Attempting a flexbox nav that has up to 5 items and as little as 3, but it's not dividing the width equally between all the elements. Fiddle The tutorial I'm modeling this after is http://www.sitepo..

Scrolling to an Anchor using Transition/CSS3

I have a series of links which are using an anchor mechanism: <div class="header"> <p class="menu"><a href="#S1">Section1</a></p> <p class="menu"><a hre..

How to include a font .ttf using CSS?

I have a problem with my code. Because I want to include a global font for my page and I downloaded a .ttf file. And I include it in my main CSS but my font wont change. Here's my simple code: @font..

How to draw vertical lines on a given plot in matplotlib

Given a plot of signal in time representation, how to draw lines marking corresponding time index? Specifically, given a signal plot with time index ranging from 0 to 2.6(s), I want to draw vertical ..

iOS 8 removed "minimal-ui" viewport property, are there other "soft fullscreen" solutions?

(This is a multi-part question, I will try my best to summarise the scenario.) We are currently building a responsive web app (news reader) that allow users to swipe between tabbed content, as well a..

Why is it that "No HTTP resource was found that matches the request URI" here?

I have code in my controller like so: [Route("api/deliveryitems/InsertIntoPPTData/{stringifiedRecord}")] ...and I'm calling it via Postman like so: http://localhost:21609/api/deliveryitems/Ins..

How do I force a vertical scrollbar to appear?

My site has both very short and longer pages. Since I center it in the viewport with margin: 0 auto, it jumps around a few pixels when switching from a page that has a scrollbar to one that hasn't and..

How to add dividers and spaces between items in RecyclerView?

This is an example of how it could have been done previously in the ListView class, using the divider and dividerHeight parameters: <ListView android:id="@+id/activity_home_list_view" andr..

In Bootstrap 3,How to change the distance between rows in vertical?

I have two rows a and b,I think the distance between the two rows in vertical is too small. I want to make the distance more bigger,I know I can change the distance in horizontal by col-md-offset-*.B..

How to check if a view controller is presented modally or pushed on a navigation stack?

How can I, in my view controller code, differentiate between: presented modally pushed on navigation stack Both presentingViewController and isMovingToParentViewController are YES in both cases, s..

Fill remaining vertical space - only CSS

I need to fill the remaining vertical space of #wrapper under #first with #second div. I need an only CSS solution. _x000D_ _x000D_ #wrapper {_x000D_ width: 300px;_x000D_ height: 100%;_x000D_ }_..

How can I change the width and height of slides on Slick Carousel? A friend suggested that I use Ken Wheeler's Slick carousel and I decided to give it a try. I am having a couple of problems with it. The first is that the slides ..

How can I make my flexbox layout take 100% vertical space?

How can I tell a flexbox layout row consume the remaining vertical space in a browser window? I have a 3-row flexbox layout. The first two rows are fixed height, but the 3rd is dynamic and I would li..

Android button with icon and text

I have some buttons like this in my app: <Button android:id="@+id/bSearch" android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddi..

Bootstrap push div content to new line

Somehow I can not get out how to finish my code which I formatted as a list and need to format it as grid too which is switched by javascript. My HTML Code below is used to list a content: <div c..

How to make div same height as parent (displayed as table-cell)

I got a container div containing three child divs (vary in content) - each as tall as the tallest one. I managed this by setting the container to display:table and the child divs to display:table-cell..

CSS : center form in page horizontally and vertically

How can i center the form called form_login horizontally and vertically in my page ? Here is the HTML I'm using right now: <body> <form id="form_login"> <p> ..

Couldn't load memtrack module Logcat Error

I am getting an error Couldn't load memtrack module (No such file or directory) failed to load memtrack module: -2 at run time. StackTrace Error: E/SoundPool(1280) : error loading /system/med..

How to vertically align text with icon font?

I have a very basic HTML which mix plain text and icon fonts. The problem is that icons are not exactly rendered at the same height than the text: _x000D_ _x000D_ <div class="ui menu">_x000D_ ..

Move div to new line

I'm pretty new to CSS and it is still magic for me. I want to have my div movie_item_content_plot on a new line. Currently I use <br> in HTML and this works fine. When I replace the <br> w..

Android adding simple animations while setvisibility(view.Gone)

I have designed a simple layout.I have finished the design without animation, but now I want to add animations when textview click event and I don't know how to use it. Did my xml design looks good or..

Python FileNotFound

I am fairly new to python. I am trying to make a script that will read sudoku solutions and determent if they are correct or not. Things I need: 1] Prompt the user to enter a file/file path which i..

height: 100% for <div> inside <div> with display: table-cell

Here is 2 column markup using display: table and display: table-cell CSS declarations: _x000D_ _x000D_ .table {_x000D_ display: table;_x000D_ }_x000D_ _x000D_ .cell {_x000D_ border: 2px solid bla..

How to vertically center a container in Bootstrap?

I'm looking for a way to vertically center the container div inside the jumbotron and to set it in the middle of the page. The .jumbotron has to be adapted to the full height and width of the screen..

Detect merged cells in VBA Excel with MergeArea

I'm having quite an issue with this one - I have to detect horizontally and vertically merged cells from an excel table. I have to store the first cell coords, and the lenght of the merged area. I ite..

CSS how to make scrollable list

I am trying to create a webpage which is made up of a header and bellow the header a list of items. I want the list of items to be vertically scrollable. I also would like the webpage to take up the e..

Concatenate two NumPy arrays vertically

I tried the following: >>> a = np.array([1,2,3]) >>> b = np.array([4,5,6]) >>> np.concatenate((a,b), axis=0) array([1, 2, 3, 4, 5, 6]) >>> np.concatenate((a,b), ax..

Binding an Image in WPF MVVM

I am having some trouble binding in Image to my viewmodel. I finally got rid of the XamlParseException, but the image does not come up. I even hard coded the image in the ViewModel. Can someone see wh..

TypeError: got multiple values for argument

I read the other threads that had to do with this error and it seems that my problem has an interesting distinct difference than all the posts I read so far, namely, all the other posts so far have th..

Button button = findViewById( always resolves to null in Android Studio

I'm new to Android development and Android Studio, so pardon my ignorance. findViewById of a button I added always resolves to null. Hence if I try to setonClickListener it fails the whole Activity...

Reactjs - setting inline styles correctly

I am trying to use Reactjs with a kendo splitter. The splitter has a style attribute like style="height: 100%" With Reactjs, if I have understood things correctly, this can be implemented using an ..

Bootstrap 3 Horizontal and Vertical Divider

I am having trouble to put in horizontal and vertical lines on my website. Not sure what's wrong with this. I tried using borders but I am not sure if I am doing it right. I would like to achieve a ..

Onclick CSS button effect

I'm creating a CSS button and I'm trying to make an onclick effect: when the user clicks on the button it would push down the button text by 1px. My problem here is that it's pushing the whole bottom ..

Example on ToggleButton

I am developing an application using a toggle button, I entered 1 or 0 in EditText. When button is clicked, the toggle button has to change if I enter 1 the toggle button shows TOGGLE ON, if I enter 0..

Android Fragment onClick button Method

I'm trying to invoke the method in my onClick (View v) XML, but does not work with Fragment. This is the error. 01-17 12:38:36.840: E/AndroidRuntime(4171): java.lang.IllegalStateException: Could not..

Responsive timeline UI with Bootstrap3

How can I create a UI with a vertical timeline bar where on desktop it shows as timeline-bar in middle and event boxes on both sides. On smaller mobile screen, the timeline-bar on the left and all eve..

Properly embedding Youtube video into bootstrap 3.0 page

I need to embed a YouTube video into my responsive site but it's not scaling correctly, especially on mobile. It looks fine on desktop and tablets but once you get below a viewport width of 600, the ..

ImageView rounded corners

I wanted image to have rounded corners. I implement this xml code and use this in my image view. but image overlap the shape. I am downloading the image through async task. <?xml version="1.0" enc..

Maintain aspect ratio of div but fill screen width and height in CSS?

I have a site to put together that has a fixed aspect ratio of approximately 16:9 landscape, like a video. I want to have it centred and expand to fill the available width, and the available height,..

How to fix Uncaught InvalidValueError: setPosition: not a LatLng or LatLngLiteral: in property lat: not a number?

I'm trying to port my googlemaps v2 functions to v3. But somehow i stuck in a strange error and i could not find, what i'm doing wrong. Error : Uncaught InvalidValueError: setPosition: not a LatL..

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In jQuery, how do I get the value of a radio button when they all have the same name?

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What does "for" attribute do in HTML <label> tag?

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Sending "User-agent" using Requests library in Python

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As it can be seen in the following fiddle, I have two divs, contained in a parent div that have stretched to contain the big div, my goal is to make those child divs equal in height. http://fiddle.js..

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What is the best way to tell if a character is a letter or number in Java without using regexes?

What is the best and/or easiest way to recognize if a string.charAt(index) is an A-z letter or a number in Java without using regular expressions? Thanks...

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I couldn't find anything about getting the total JSON record count using jQuery. Here is the JSON returned: {"Email":"Please enter your Email.","Password":"Please enter a password."} Here is my cod..

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How to create a css rule for all elements except one class?

I have created a CSS stylesheet for my project. Is there any way I can create a css rule that applies to all table elements EXCEPT table elements belonging to the class "dojoxGrid"? Something like: ...

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I've developed a huge table in excel and now facing problem in transferring it into the postgresql database. I've downloaded the odbc software and I'm able to open table created in postgresql with exc..

Why is visible="false" not working for a plain html table?

The visible property of html table does not work. Why do they have that property if its defective? I had to use style="visibility:hidden" in order to hide a table. Please explain why. I am very cu..

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What is the difference between variables $a and $b? $a = (Get-Date).DayOfWeek $b = Get-Date | Select-Object DayOfWeek I tried to check $a.GetType $b.GetType MemberType : Method OverloadD..

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How can I redirect to another URL in a web page using JavaScript?..

Test if string is a number in Ruby on Rails

I have the following in my application controller: def is_number?(object) true if Float(object) rescue false end and the following condition in my controller: if mystring.is_number? end The c..

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I am new to using the json-simple library in Java and I've been through both the encoding and decoding samples. Duplicating the encoding examples was fine, but I have not been able to get the decoding..

Convert floats to ints in Pandas?

I've been working with data imported from a CSV. Pandas changed some columns to float, so now the numbers in these columns get displayed as floating points! However, I need them to be displayed as int..

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Imagine a base class with many constructors and a virtual method public class Foo { ... public Foo() {...} public Foo(int i) {...} ... public virtual void SomethingElse() {...} ... ..

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How to modify existing XML file with XmlDocument and XmlNode in C#

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I have a problem with Android 0.4.2 Studio, when creating a new application, it tells me there is a problem with the rendering and shows me the following problem: Renderering Problems No Android SDK ..

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I need to access only Month.Year from Date field in SQL Server...

How to play only the audio of a Youtube video using HTML 5?

Is it possible to play only the audio from a YouTube video using HTML 5 and Javascript?..

How to insert multiple rows from array using CodeIgniter framework?

I'm passing a large dataset into a MySQL table via PHP using insert commands and I'm wondering if it's possible to insert approximately 1000 rows at a time via a query other than appending each value ..

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For some value of @nReservationID: SELECT @phoneNumber= CASE WHEN ISNULL(rdg2.nPhoneNumber ,0) = 0 THEN ISNULL(rdg2.nMobileNumber, 0) ELSE ISNULL(rdg2.nPhoneNumber ,0) END from tblRe..

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I am using MS SQL SERVER 2008 and I have following data: select * from account; | PERIOD | ACCOUNT | VALUE | ---------------------------- | 2000 | Asset | 205 | | 2000 | Equity | 365 | |..

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Is it possible to find all the pages and links on ANY given website? I'd like to enter a URL and produce a directory tree of all links from that site? I've looked at HTTrack but that downloads the wh..

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if (ContextCompat.checkSelfPermission(RegisterActivity.this, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_DENIED){ ActivityCompat.requestPermissions(this, ..

How do I catch a PHP fatal (`E_ERROR`) error?

I can use set_error_handler() to catch most PHP errors, but it doesn't work for fatal (E_ERROR) errors, such as calling a function that doesn't exist. Is there another way to catch these errors? I am..

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I'm trying to send a multipart/related html email with embedded gif images. This email is generated using Oracle PL/SQL. My attempts have failed, with the image showing up as a red X (in Outlook 200..

What's the equivalent of Java's Thread.sleep() in JavaScript?

What's the equivalent of Java's Thread.sleep() in JavaScript?..

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How to iterate through range of Dates in Java?

In my script I need to perform a set of actions through range of dates, given a start and end date. Please provide me guidance to achieve this using Java. for ( currentDate = starDate; currentDate &l..

How do I count the number of occurrences of a char in a String?

I have the string a.b.c.d I want to count the occurrences of '.' in an idiomatic way, preferably a one-liner. (Previously I had expressed this constraint as "without a loop", in case you're wonde..

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I cannot get this TRIM code to work SELECT dbo.COL_V_Cost_GEMS_Detail.TNG_SYS_NR AS [EHP Code], dbo.COL_TBL_VCOURSE.TNG_NA AS [Course Title], LTRIM(RTRIM(FCT_TYP_CD)& ') AND (' & ..

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What is the easiest way to encode a PHP string for output to a JavaScript variable? I have a PHP string which includes quotes and newlines. I need the contents of this string to be put into a JavaSc..

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I know how to read a file with Java using Scanner and File IOException, but the only thing I don't know is how to store the text in the files as an array. Here is a snippet of my code: public stat..

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I made a sample application named checkStatus. Now I want to create a signed APK file. So I can install it in different devices for my testing. For this, I Googled and found this documentation. As p..

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For logging purpose we are converting the logs to byte array and then to hex string. I want to get it back in a Java String, but I am not able to do so. The hex string in log file looks something lik..

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I have a list in python and I want to convert it to an array to be able to use ravel() function...

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If you were to mandate a minimum percentage code-coverage for unit tests, perhaps even as a requirement for committing to a repository, what would it be? Please explain how you arrived at your answer..


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How to call getClass() from a static method in Java?

I have a class that must have some static methods. Inside these static methods I need to call the method getClass() to make the following call: public static void startMusic() { URL songPath = getC..

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