screen

问题 Hi all I have problem with my QML code. I made mistake and I went to put certain size to elements and now I have problem when putting app on other devices. I will paste you my code where I have width and height so you can change it to show me how to work with dynamic resizeing. I need to say that I am calling qml file from qt with this code: QDeclarativeView *view= new QDeclarativeView; ui->setupUi(this); setCentralWidget(view); QDeclarativeContext *ctxt = view->rootContext(); ctxt-

问题 Hi all I have problem with my QML code. I made mistake and I went to put certain size to elements and now I have problem when putting app on other devices. I will paste you my code where I have width and height so you can change it to show me how to work with dynamic resizeing. I need to say that I am calling qml file from qt with this code: QDeclarativeView *view= new QDeclarativeView; ui->setupUi(this); setCentralWidget(view); QDeclarativeContext *ctxt = view->rootContext(); ctxt-

问题 I'm having trouble with navigating between screen with react-router-dom. What I'm trying to do is that after completing an action I want to navigate to other screen. Sorry for the noob question but it's my first time working with react. 回答1: if you are using hooks, use react-router doms useHistory hook https://reactrouter.com/web/api/Hooks for example: import { useHistory } from "react-router-dom"; function HomeButton() { let history = useHistory(); function handleClick() { history.push("

问题 let searchController = UISearchController(searchResultsController: nil) override func viewDidLoad() { super.viewDidLoad() searchController.searchResultsUpdater = self searchController.dimsBackgroundDuringPresentation = false // searchController.definesPresentationContext = true self.definesPresentationContext = true When the search bar is active, with text in it, and I go to another tab and then back, the controller is black, apart from the actual search bar. Things go back to normal when I

问题 Im trying to display different video resolution according to the users screen height resolution, i have this code but im not an expert with javascript. It's supposed to change the src attribute, if the res is lower o equal to 360px height, and so on. Any suggestions? <script type="text/rocketscript"> var v = new Array(); v[0] = ["https://dl.dropboxusercontent.com/u/51626189/nli-vids/intro/intro-360_x264.mp4"]; v[1] = ["https://dl.dropboxusercontent.com/u/51626189/nli-vids/intro/intro-480_x264

问题 I have a small problem: I would like using Raspberry PI 7 inch LCD on portrait (standing) mode. (Kivy application) I added on /boot/config.txt: lcd_rotate=2 and display_rotate=1 The display is OK, but touch screen not good! The touch not rotating 90 degrees. How I rotate touch screen 90 degrees? 回答1: Rotate official 7" Raspberry Touchscreen 1. install xinput : sudo apt-get install xinput 2. to rotate the screen, edit this file: sudo nano /boot/config.txt and add this line at the end: display

问题 I have a small problem: I would like using Raspberry PI 7 inch LCD on portrait (standing) mode. (Kivy application) I added on /boot/config.txt: lcd_rotate=2 and display_rotate=1 The display is OK, but touch screen not good! The touch not rotating 90 degrees. How I rotate touch screen 90 degrees? 回答1: Rotate official 7" Raspberry Touchscreen 1. install xinput : sudo apt-get install xinput 2. to rotate the screen, edit this file: sudo nano /boot/config.txt and add this line at the end: display

问题 I have a small problem: I would like using Raspberry PI 7 inch LCD on portrait (standing) mode. (Kivy application) I added on /boot/config.txt: lcd_rotate=2 and display_rotate=1 The display is OK, but touch screen not good! The touch not rotating 90 degrees. How I rotate touch screen 90 degrees? 回答1: Rotate official 7" Raspberry Touchscreen 1. install xinput : sudo apt-get install xinput 2. to rotate the screen, edit this file: sudo nano /boot/config.txt and add this line at the end: display

问题 I am building a multiple screen App with Kivy and I would like to use the ScreenManager to navigate between the multiple screens. I have seen examples and documentation for how to create the screens within a .kv file, but I want to know how to create them within the .py file. Problem: When I create the screen subclasses as shown below, my app window returns a blank screen. Question: What is the correct way to create the Screen subclasses within a .py file? Right now I have two Screen

问题 How can I check if the screen is on or off in iOS? I'd like to know if the screen is currently on, even my app is in the background. I'd like to have an event listener on this. thanks. 回答1: In Swift 3 you can do: override func viewDidLoad() { super.viewDidLoad() // Observer UIApplicationDidBecomeActive,UIApplicationDidEnterBackground NotificationCenter.default.addObserver( self, selector: #selector(MyViewController.applicationDidBecomeActive(notification:)), name: NSNotification.Name