ArrayAdapter | The missing ArrayAdapter implementation for RecyclerView | RecyclerView library
kandi X-RAY | ArrayAdapter Summary
kandi X-RAY | ArrayAdapter Summary
RecyclerView doesn't ship a ready to go RecyclerView.Adapter implementation as ListView did with the ArrayAdapter. This library is this missing ArrayAdapter.
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Top functions reviewed by kandi - BETA
- Sorts the contents of this adapter using the provided comparator
- Swaps the data in the specified list
- Checks if two items are the same
- Clears the list
- Checks if two items have the same content
- Adds the specified items to the end of the array
- Ensures that an object is not null
- Returns the count of items in this map
- Adds all items to the end of the list
- Ensures that an object is not null
- Returns the count of items in this map
- Removes the specified object from the array
- Returns the position of the specified item
- Replaces the old item with the new item
- Adds the specified object at the end of the array
- Inserts the specified object at the specified index
- Returns the item at a specific position
- Get an unmodifiable view of the adapter
ArrayAdapter Key Features
ArrayAdapter Examples and Code Snippets
Lines of Code : 31License : Permissive (Apache-2.0)
Copypublic class UserAdapter extends ArrayAdapter {
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView titleView;
public ViewHolder(final View itemView) {
super(itemView);
Copyright 2017 Pascal Welsch
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unl dependencies {
implementation 'com.pascalwelsch.arrayadapter:arrayadapter:1.3.0'
}
Community Discussions
Trending Discussions on ArrayAdapter
QUESTION
This is my first time using the spinner so I was following tutorials. I was making spinner that will showcase the objects name.
Edit_Form Activity:
...ANSWER
Answered 2021-Aug-28 at 13:53You need to remove layout_margin on both and . Then the sprinner should appear in Constraint Layout
QUESTION
ANSWER
Answered 2022-Jan-07 at 03:46Try removing dropDownHeight attribute from the AutoCompleteTextView
QUESTION
I'm trying to learn how to use Firebase, and decided to make a simple android application that uses the Firebase RealTime Database. The game requires a host who hosts a lobby, and players who can join that lobby. I made a host class that has a bunch of data types, among which is a list (the game involves using hints given to players by the host). I'm running into problems when I try to read from the database.
My lobby is a listview that I want to populate with a list of hosts in the database, but when I try to read from it I get this nasty error:
com.google.firebase.database.DatabaseException: Class java.util.List has generic type parameters, please use GenericTypeIndicator instead
I know that there are other questions about the same error, but I couldn't apply those answers with much success. I'm quite new to android development and would greatly appreciate any help.
Here is my user-defined class:
...ANSWER
Answered 2021-Oct-25 at 00:20I've adapted the answer Frank and Alex mentioned in their comments. And it seems to be working in your situation. Instead of directly using
snapshot.getValue(HostPlayer.class); use a GenericTypeIndicator like this;
QUESTION
I am making a calculator and I am stumped on this part. I want to have the value inputted from the user for inputG only to be between numbers 1-100. Then, grab that value and use it in a formula. My logic is off somewhere and I need help finding what I did wrong. I am using Java, not Kotlin.
...ANSWER
Answered 2021-Oct-06 at 18:14You need to move the following lines into the btnCalculate.setOnClickListener,
QUESTION
ANSWER
Answered 2021-Aug-30 at 10:08Create a background.xml finl and set this to the spinner background
QUESTION
I am trying to pass the value from spinner.setOnItemSelectedListener to a string that contains date string. I have two spinners month and year, here I am showing only for month spinner because if I get the solution for month spinner then it will be same for year as well.
ANSWER
Answered 2021-Jul-29 at 17:50Declare selectdate as static public static LocalDate selectdate;
Create a method named getSelectDate and call it to get changed value , such as inside onCreate, inside onItemSelected of month_spinner and spinYear.
QUESTION
I'm trying to send data from my android app to an esp32 over bluetooth (BLE) but i can't find the proper way to do it. All i can do for now is scan and find ble devices. My arduino code is working as i want (it receives the data properly) because i used another app which let me send data to ble devices so i know the arduino code is fine.
I've been searching for days here and google how to achieve it but i still stucked in it. This is my code for now:
Scanner:
...ANSWER
Answered 2021-May-31 at 09:00In order to get this working, I would do the following if I was you:-
Part A: Get this working with an existing Android app (e.g. nRF Connect - maybe you've already done this part)
- Download and install nRF Connect app from the play store.
- Launch nRF Connect app and scan for devices.
- Connect to your ESP32 if it was found.
- Browse the GATT table and find the UUID and handle of the characteristic that controls the ESP32. This is important as it will be used in Part B.
- Once found, try to write the values 0, 1, 2, 3, and 4 to this characteristic and ensure that everything is working.
If there are parts above that are new to you, please have a look at the links below. If you've already successfully done all of the above, then move to Part B:-
- nRF Connect For Mobile - Get Started
- Bluetooth Low Energy Characteristics - A Beginner's Guide
- Introduction to BLE - GATT
Part B: Get this working using your Android app:-
- Similar to the nRF Connect app, your app needs to scan and connect to the ESP32. You can find examples on how to do this here.
- Once you are connected, you need to browse the GATT Table and find the right characteristic. You can find examples for this here.
- Once you find the right characteristic and its handle (this is the one you noted in step 4 above), proceed to write values to this characteristic. You can find examples here, here and here.
If all of this is in place and it is still not working, here are things to check:-
- Are you waiting for the GATT write completion callback? Also check this.
- Are you using the right Android write operation?
- Are you maybe using reliable writes instead of normal write?
- Are you sending integer data instead of string data? The app expects integer data in order to work properly.
You can find examples and explanations about the steps above in the links below:-
QUESTION
I want to make an listview with checkboxes. But the checkbox check is not working properly, is checkin right just the first element in my list. Can you help me pls? Here is my code
...ANSWER
Answered 2021-Jun-01 at 16:08With the @blackapps's help, try this:
QUESTION
This is the MainActivity.java:
...ANSWER
Answered 2021-May-14 at 11:51Try adding this inside the tag in AndroidManifest.xml:
QUESTION
I am trying to do something which is very complicated to me.... I am trying to create an invoice with two objects 1) Invoice 2) InvoiceItems (Line Items)
The same activity is used to edit existing or to create a new invoice hence both Invoice and InvoiceItems are nullable.
The way I am trying to make this work is when the activity is launched,
- user enter details in the form for the invoice activity
- user clicks add Item details (Invoice with data entered like title etc, and invoiceItems are sent to the edit InvoiceItems activity, on Click)
- New activity is launched to add a single Item detail
- Changes made and the invoice items is updated
- On press back, the objects are sent back to the previous activity again
The issues are two fold:
- Is this the right approach?
- I get null point error exception when adding the field details to the invoice object before sending to the InvoiceItem activity
Please have a look at the code below:
...ANSWER
Answered 2021-Apr-08 at 08:16Your invoice variable will be null if this line returns null:
invoice = intent.getSerializableExtra("invoice") as? Invoice
Later in your code, you had never populated your invoice variable, but you force unwraps it in this line:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install ArrayAdapter
You can use ArrayAdapter like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the ArrayAdapter component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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