I want to create a React Native app that persists local data and then syncs to the server. Please help me to find a way for this. Answer React Native provides methods to persist data. Some are provided out of the box while others are libraries you have to install and use. Below are popular methods of persisti…
Tag: react-native
Pass an object with JS throw new Error in node
I want to throw an error in my node application as follows. this give me the following output. I can’t access the properties of this error object. What am I doing wrong here? Answer The constructor for an Error object expects a string, not an object (which is why your scheme doesn’t work). You are…
React-Native another VirtualizedList-backed container
After upgrading to react-native 0.61 i get a lot of warnings like that: What is the other VirtualizedList-backed container that i should use, and why is it now advised not to use like that? Answer If someone’s still looking for a suggestion to the problem that @Ponleu and @David Schilling have described…
React Native Geolocation GetCurrentPosition EnableHighAccuracy
I am using Geolocation on Android to get a user’s position. I am a little bit confused about the EnableHighAccuracy setting. Basically, to make this work I have to set it to “true” for Android Simulator and to “false” for a physical device. Otherwise its broken and I get timeout …
MainApplication.java in React Native 0.61.0
I’m migrating my project from React Native 0.59.9 to 0.61.0 (not advisable, but I have my own reasons). In my existing project I have the following code in MainApplication.java: In MainApplication.java in v0.61.0 the following code is auto-generated (corresponds to the code above): Does it make sense th…
Center text vertically in react-native
As given in the image, the text 10 shares is on the top left corner. I want to center 10 shares vertically. I have tried some methods to make it come to the center of the yellow view. I want to center the bottomLeft item (10 shares) vertically. Now it is showing top left in the view. I am new
React Native FlatList with custom buttons, how to change color on click?
I have created a FlatList that renders names. Each row has its own button. When you click the button, the name is added to a list and the button should change color My problem is that the button does not change color as soon as I click on it, it only changes color when I make a pull refresh on
How to get previous route name from React Navigation
I am trying to get previous route name to my current screen. Because based on the previous screen name, I have to show/hide few objects in current screen. To get previous screen name, I have tried following But, It’s getting undefined in console log. Any suggestions? Answer You need to use NavigationAct…
How can I send a data to webview by clicking on react native button
I have used the componentDidMount method which sending data properly to webview but i want to send data webview when I click on particular react native button. In this webview is displaying the local html page and in this I’m sending the data to webview and on load event in html page alert the data whic…
how to show the pdf in a modal instead of opening it in a new window in react js
I have created a pdf file using blob text in react js and using “window.open(fileURL, “_blank”)” i am able to see the pdf in a new window. But now my requirement is just to show the pdf as a modal in ui and when clicked on the modal it can be viewed in another window.Can anybody please…