Unknown 17 April at Anonymous 18 April at Hello 8 June at Unknown 16 June at Unknown 21 June at Unknown 8 October at Unknown 8 November at Jainism 16 December at Now, we have to tell the onRefresh function what it has to do after it has refreshed the ListView once. We are using the function notifyDataSetChanged of the class adapter to notify the adapter that data has been change and using the function setRefreshing of class SwipeRefreshLayout which takes true or false as an argument.
We are passing false as the argument because we need to stop the refresh after one successful refresh. RecyclerView; import java. Step 6: Working with MainActivity. You can use any images in place of this. Below is the code for the MainActivity. Bundle; import androidx. AppCompatActivity; import androidx.
LinearLayoutManager; import androidx. RecyclerView; import androidx. SwipeRefreshLayout; import java. ArrayList; import java. Arrays; import java. Collections; import java. Skip to content.
OK Paste as. Treat my content as plain text, not as HTML. Existing Members Sign in to your account. This email is in use. Do you need your password? Submit your solution! When answering a question please: Read the question carefully. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome. First you need to create a Firebase App in the online Firebae Console.
After creating a Firebase App you need to associate it with your android application. We call this registering your android app. You can get this in your app level build. In your project, there is an app folder. Copy the downloaded google-services.
You can do this in two ways. First navigate over to project files and just copy paste the file as below:. Go to your open project level or root level build. Failure to do so will lead to you getting Default FirebaseApp is not initialized illegal state exception at runtime. In the same app level build. We are creating and using custom material theme or style to use with our application. Go check the demo or video to see it. Name it styles-v We can use it not only to create user interfaces, but also to exchange data.
We start by specifying our root element, in this case a RelativeLayout, which normally arranges items relative to each other. Inside it at the top we have a TextView, which is a view mostly used to render static text. Think of something like a label. In this case we use it to show the header of our application. Then we also add a ListView element. This ListView wiil display our data vertically, in a one dimensional manner.
The ListView has to be assigned a unique id since it will be referenced from the java code. We will always be showing a fastScroll. Using this users can scroll through the data. It will be always visible, whether our data exceeds the viewport or not. This is optional. Then to the bottom right of our parent, which in this case is the RelativeLayout , we will display a FloatingActionButton. When this FAB button is clicked, an input form will be displayed for users to enter data to be sent to Firebase Realtime Database.
The data will be coming from Firebase Realtime database. So we place a CardView as a root element of our layout. I have set my cardCornerRadius to 5p , my cardElevation to 10dp and the height to dp.
I will use a LinearLayout to arrange items in a vertical manner. These items are basically TextViews. They will display details of each Teacher object, like name , quote and description. This layout will define for us a Form, an input form we will use to save data to Firebase. User will type data and click save and then we send or write that data to Firebase. Immediately data will be retrieved and our ListView will get populated. All this happens in realtime since we are using the powerful Firebase Realtime database.
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