However, in the chat screen, the chat messages as shown by other users need to appear in a chat bubble, for this we need to create a layout to appear in listView widget. The code for this will be as follows:. For the signed up users and chat messages, we will need two Model classes in this project i. To create Models, right click on the main directory of your app in the java folder com.
Starting with MainActivity, this is the launcher activity that opens first whenever user opens the app. Here we will check if user is logged in or not and if current user is null i. Once the user has successfully signed in, we will now allow user to initiate chat.
In the ChatActivity. Here is the direct link for complete Chat application Source Code. You must be logged in to post a comment. This site uses Akismet to reduce spam. Learn how your comment data is processed. If you face any errors due to the unavailability of dependencies, please follow the error messages to install the dependencies and run the command again. At the end of the build step, you will see the new Android. To test the app, you can use the Android emulator that comes by default with the Android Studio.
Launch the Android studio. Note: The Android Studio is used to launch the emulator only. We are not going to use it to build the app.
Now launch the AVD manager from the top toolbar, and you will see the list of available virtual devices. Double click on the virtual device to launch it.
It will take a few minutes to start and display the Android screen. Now drag and drop the. This action will install the app on the emulator device. It will create an app icon with the name QRCodeGen, as per the name you defined in the config. Once installed, navigate to the app, launch it, and you are ready to test it. You have just created an Android app with JavaScript without using any of the native Android development tools.
Hence, this approach is the best way to build an Android app without upskilling yourself. You should now have a good idea about how to build an Android app with Ionic. Share your thoughts and queries in the comments below. We will be back soon with yet another exciting demo around Android. The preferred development environment for Android app is Kotlin or Java, hence there is no direct way of building an Android app using JavaScript. However, with the help of a framework, it is possible to add a wrapper over the native Android interface.
The Ionic framework is one of the oldest and the most popular framework that leverages several web frameworks to provide that wrapper. Apart from supporting vanilla JavaScript, which is still in beta, you can use Ionic with Angular and React to built a hybrid wrapper over Android.
QR codes can be used to encode useful information ranging from website URLs, contact information as well as other information. Shyam is the Founder of Radiostud. He's an entrepreneur, a technology evangelist, author, and mentor with a deep passion for nurturing ideas and building things around emerging and futuristic trends in Computing, Information Technology, and Telecommunications. GitHub LinkedIn. Your email address will not be published.
Learn More. How to build Android apps with JavaScript? How to generate a QR code? Flutter vs. Search this website. Leave a Reply Your email address will not be published. The documentation for MessageListView details all the available customization options.
There may come a time when you have requirements to include things in your chat experience that we don't provide out-of-the-box. For times like this, we provide two main customization paths: you can either reimplement the entire ViewHolder and display a message how you like, or you can use custom attachment views, which is a lot less work.
We'll look at this latter approach now. You could use this to embed a shopping cart in your chat, share a location, or perhaps implement a poll. For this example, we'll keep it simple and customize the preview for images shared from Imgur. We're going to render the Imgur logo over images from the imgur.
As a first step, download the Imgur logo and add it to your drawable folder. Now we need to create a custom implementation of AttachmentViewFactory. Create a new file called ImgurAttachmentViewFactory and add this code:. When you run your app, you should now see the Imgur logo displayed over images from Imgur.
This was, of course, a very simple change, but you could use the same approach to implement a product preview, shopping cart, location sharing, polls, and more. You can achieve lots of your message customization goals by implementing a custom attachment View.
If you need even more customization, you can also implement custom ViewHolders for the entire message object. If you want to build a custom UI, you can do that using the LiveData objects provided by our offline support library, or the events provided by our low level client. The example below will show you how to build a custom typing status component using both approaches.
You'll also want to update the constraints for the MessageListView. The offline support library contains the ChatDomain class, which provides observable LiveData objects for a channel such as messages, typing state, reads statuses, etc. The full list of LiveData objects provided is detailed in the documentation. These make it easy to obtain data for use in your own custom UI.
Open ChannelActivity and add the following code below Step 6 , still within the onCreate method:. Remember to update your imports before running the app. You should now see a small typing indicator bar just below the channel header. Note that the current user is excluded from the list of typing users.
The code is quite simple - we are invoking the getChannelController use case which returns the ChannelController. The controller exposes a LiveData object, typing , for observing typing users. We observe this and update the text in the TextView we've added. To test the behaviour, you can open a client on the web , enter the same channel, and then type away! The low-level client enables you to talk directly to Stream's API. This gives you the flexibility to implement any messaging UI that you want.
In this case, we want to show who is typing, current user included. In the code below, we get the ChatClient instance, and fetch a ChannelClient using the the channel cid call. This provides access to all operations on the given channel.
Then, we use subscribeFor to listen to all TypingStart and TypingStop events in the current channel, and update the contents of the TextView with the list of typing users.
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