I had similar issue. If you want to have you chat messages start at the bottom, you could set “inverted” to true and display your messages and time tag in an opposite direction. Check here for “inverted” property for FlatList. https://facebook.github.io/react-native/docs/flatlist#inverted If you want to have you chat messages start at the top, which is … Read more
Let’s review a few useful concepts about scrolling first: scrollHeight: total container size. scrollTop: amount of scroll user has done. clientHeight: amount of container a user sees. When should you scroll? User has loaded messages for the first time. New messages have arrived and you are at the bottom of the scroll (you don’t want … Read more
It depends what license you can use. Some popular libraries are GPL which can cause serious issues if you need to use it for work, especially if you need to keep proprietary extensions. The LGPL libraries are a little less popular, I think, but you have more flexibility with what you can use them for. … Read more
That tech is known as “comet”, but also as “server push”, “reverse ajax”, etc. It’s about pushing data from the server to the browser, keeping an http connection alive. Find more info on it on the wikipedia article (English version). Also here’s a pretty good presentation with Joe Walker from DWR, where he talks about … Read more
Have you tried <a href=”https://stackoverflow.com/questions/2841676/skype:-skype-name-?chat”>Start chat</a> ? Allowed query parameters: chat – start a chat call – start a call add – add person to the contacts userinfo – view user’s profile voicemail – leave a voice message sendfile – send a file
There’s nothing wrong with saving the whole history in the database, they are prepared for that kind of tasks. Actually you can find here in Stack Overflow a link to an example schema for a chat: example If you are still worried for the size, you could apply some optimizations to group messages, like adding … Read more
If you are looking to create an instant messenger for Android, this code should get you started somewhere. Excerpt from the source : This is a simple IM application runs on Android, application makes http request to a server, implemented in php and mysql, to authenticate, to register and to get the other friends’ status … Read more
You can add below 2 lines into your gradle.properties file: android.useAndroidX=true android.enableJetifier=true Note to check, to not repeat any line that already exists (and ensure existing are true). Details: If you want to use androidx-namespaced libraries in a new project, you need to set the compile SDK to Android 9.0 (API level 28) or higher … Read more
Here’s what I use on my site: var objDiv = document.getElementById(“your_div”); objDiv.scrollTop = objDiv.scrollHeight;