If you see the read messages function in my activity class below, i wanted to update the isSeen field in firestore, but for some reason it does not work at all. My guess it requires a specific document value but that would not be possible as this a messaging app so there will be a lot of documents created.
Activity Class
class MessageActivity : AppCompatActivity() {
private lateinit var binding: ActivityMessageBinding
private lateinit var chat: ArrayList<Message>
private lateinit var messageAdapter: MessageAdapter
private lateinit var roomID: String
private lateinit var userID: String
private lateinit var recID: String
private var c: Int = 0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMessageBinding.inflate(layoutInflater)
setContentView(binding.root)
userID = FirebaseAuth.getInstance().uid.toString()
recID = intent.getStringExtra("userID").toString()
val recName:String = intent.getStringExtra("userName").toString()
binding.userName.text = recName
chat = arrayListOf()
messageAdapter = MessageAdapter(chat)
binding.recyclerView.setHasFixedSize(true)
binding.recyclerView.layoutManager = LinearLayoutManager(this)
when {
userID < recID ->
{
roomID = userID + recID
}
userID.compareTo(recID) == 0 ->
{
Toast.makeText(this, "Error you are chatting with yourself!!!", Toast.LENGTH_SHORT).show()
}
else -> {
roomID = recID + userID
}
}
readMessages(userID,recID)
binding.btnSend.setOnClickListener {
val message: String = binding.textSend.text.toString()
if(message.isNotEmpty()){
sendMessage(userID,recID,message)
binding.textSend.text.clear()
}
else{
Toast.makeText(this,"You can't send empty message", Toast.LENGTH_SHORT).show()
}
}
binding.gps.setOnClickListener {
val uri = "http://maps.google.com/maps?daddr="
val intent = Intent(Intent.ACTION_VIEW, Uri.parse(uri))
intent.setPackage("com.google.android.apps.maps")
startActivity(intent)
}
}
private fun sendMessage(sender: String, rec: String, message: String){
val db = Firebase.firestore
val time: FieldValue = FieldValue.serverTimestamp()
val msg = hashMapOf(
"userID" to sender,
"recID" to rec,
"message" to message,
"time" to time,
"roomID" to roomID,
"isSeen" to false
)
db.collection("chats").document(roomID).collection("messages").document().set(msg,SetOptions.merge())
}
private fun readMessages(userId: String, recId: String){
val rootRef = Firebase.firestore
rootRef.collection("chats").document(roomID).collection("messages").orderBy("time", Query.Direction.ASCENDING).addSnapshotListener(object : EventListener<QuerySnapshot?>
{
override fun onEvent(#Nullable documentSnapshots: QuerySnapshot?, #Nullable e: FirebaseFirestoreException?)
{
if (e != null)
{
Log.e(TAG, "onEvent: Listen failed.", e)
return
}
chat.clear()
if (documentSnapshots != null)
{
for (queryDocumentSnapshots in documentSnapshots)
{
val msg = queryDocumentSnapshots.toObject(Message::class.java)
if (msg.recID == recId && msg.userID == userId || msg.recID == userId && msg.userID == recId)
{
chat.add(msg)
}
if(msg.recID.equals(userID).and(msg.userID.equals(recID))){
rootRef.collection("chats").document(roomID).collection("messages").document().update("isSeen",true)
}
messageAdapter = MessageAdapter(chat)
binding.recyclerView.adapter = messageAdapter
}
}
}
})
}
}
Adapter Class
class MessageAdapter(private val MessageList:ArrayList<Message>):RecyclerView.Adapter<MessageAdapter.MessageViewHolder>() {
private val left = 0
private val right = 1
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MessageViewHolder {
return if(viewType==right){
val view1 = LayoutInflater.from(parent.context).inflate(R.layout.chat_sender_item,parent,false)
MessageViewHolder(view1)
}else{
val view2 = LayoutInflater.from(parent.context).inflate(R.layout.chat_receiver_item,parent,false)
MessageViewHolder(view2)
}
}
override fun onBindViewHolder(holder: MessageViewHolder, position: Int) {
val message:Message = MessageList[position]
holder.showMessage.text = message.message
if(position==MessageList.size-1){
if(message.isSeen)
{
holder.textSeen.text = "Seen"
}else{
holder.textSeen.text = "Delivered"
}
}else{
holder.textSeen.visibility = View.GONE
}
}
override fun getItemCount(): Int {
return MessageList.size
}
class MessageViewHolder(itemView:View) : RecyclerView.ViewHolder(itemView){
val showMessage: TextView = itemView.findViewById(R.id.showMessage)
val textSeen: TextView = itemView.findViewById(R.id.textSeen)
}
override fun getItemViewType(position: Int): Int {
val userID = FirebaseAuth.getInstance().currentUser!!.uid
return if(MessageList[position].userID==userID)
{
right
}else
{
left
}
}
}
Model Class
package com.aarondcosta99.foodreuseapp.model
data class Message(var userID:String? = "",var message:String? = "",var recID:String? = "",var isSeen:Boolean=false)
Firestore
This won't work:
rootRef.collection("chats").document(roomID).collection("messages").document().update("isSeen",true)
The document() call without any arguments creates a reference to a new non-existing document, which you then try to update. But update() only works when a document already exists, you can't use update() to create a document, so this code ends up doing nothing.
To update a document, you need to specify the complete path to that document. The fact that you need to update a lot of documents makes no difference to that fact, it just means you'll need to paths to a lot of documents.
As far as I can tell, you are trying to update the document that you read in documentSnapshots, which means you already have the DocumentReference handy and can update it with:
queryDocumentSnapshots.reference.update("isSeen",true)
Related
I need to develop an app from university.
When I start the app, the RecyclerView is displayed correctly. However, when I refresh the RecyclerView or switch to another TAP, the card layouts are no longer displayed.
I get all the events from Firebase using an Event data class and pass them to the RecyclerAdapter.
Can you help me so that the refresh works?
Thanks a lot
Augustin
RecyclerAdapter:
class RecyclerAdapter(val events: List<Event>) :
RecyclerView.Adapter<RecyclerAdapter.ViewHolder>() {
private lateinit var navController: NavController
private lateinit var events_id : String
var countEventId = mutableListOf<String>()
var count = 0
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val view =
LayoutInflater.from(parent.context).inflate(R.layout.view_cardlayout, parent, false)
return ViewHolder(view)
}
override fun getItemCount() = events.size
override fun onBindViewHolder(holder: RecyclerAdapter.ViewHolder, position: Int) {
holder.bind(events[position])
}
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
fun bind(event: Event) {
itemView.headlineTV.text = event.name
itemView.placeHolderTV.text = event.location
itemView.dateHolderTV.text = event.date
itemView.timeHolderTV.text = "${event.starttime} Uhr"
itemView.dataHolderVotes.text = event.votes.toString()
itemView.dataHolderVotes.text = event.votesUser?.size.toString()
countEventId.add(event.eventId)
count++
}
init {
itemView.setOnClickListener {
val pos: Int =
bindingAdapterPosition
navController = findNavController(itemView)
val action_HomeToData1 =
HomeFragmentDirections.actionHomeFragmentToData1Fragment(countEventId[pos])
navController.navigate(action_HomeToData1)
}
}
}
}
HomeFragment:
class HomeFragment : Fragment(R.layout.fragment_home) {
private lateinit var firestoneDb: FirebaseFirestore
private lateinit var events: MutableList<Event>
//private lateinit var adapter: RecyclerAdapter
private var layoutManager: RecyclerView.LayoutManager? = null
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
var auth = FirebaseAuth.getInstance()
var user = auth.currentUser
var uid = user?.uid
firestoneDb = FirebaseFirestore.getInstance()
events = mutableListOf()
recyclerView.adapter = RecyclerAdapter(events)
recyclerView.layoutManager = LinearLayoutManager(activity)
val eventsReference = firestoneDb.collection("events")
eventsReference
.whereEqualTo("creator", uid)
.addSnapshotListener { snapshot, exception ->
if (exception != null || snapshot == null) {
Log.e(TAG, "Exception when querying events", exception)
return#addSnapshotListener
}
var eventList = snapshot.toObjects(Event::class.java)
events.clear()
events.addAll(eventList)
for (event in eventList) {
Log.i(TAG, "Event ${event}")
}
}
refreshHome()
}
override fun onResume() {
super.onResume()
}
private fun refreshHome() {
refresherHome.setOnRefreshListener {
Toast.makeText(activity, "Page has been refreshed", Toast.LENGTH_SHORT).show()
refresherHome.isRefreshing = false
val action_HomeToSelf = HomeFragmentDirections.actionHomeFragmentSelf()
findNavController().navigate(action_HomeToSelf)
}
}
}
Data class Event:
data class Event (
var description: String = "",
#get: PropertyName("start_time") #set:PropertyName("start_time") var starttime: String = "",
var creator: String = "",
#get: PropertyName("event_id") #set:PropertyName("event_id")var eventId: String = "",
var location: String = "",
var name: String = "",
var questions: List<String>? = null,
var date: String = "",
#get: PropertyName("votes") #set:PropertyName("votes") var votes: Int = 0,
#get: PropertyName("creationTimeMs") #set:PropertyName("creationTimeMs")var creationTimeMs: Long = 0,
#get: PropertyName("votes_user") #set:PropertyName("votes_user")var votesUser: List<String>? = null
)
After you change the events in the list, you need to tell the adapter that its data has change so that it knows to refresh the view. To do this call adapter.notifyDataSetChanged(), inside the snapshot listener after you're done modifying events.
Somehow I see in the app messages I sent, but can't see those which should be received from others. Also when I'm sending a message it's sent to all users. Here I'm sending two classes, adapter and main chat activity. I tried using inner classes, different types of getItemViewType functions but nothing works.
MessageAdapter
class MessageAdapter(val context: Context, val messageList: ArrayList<Message>):
RecyclerView.Adapter<RecyclerView.ViewHolder>() {
val ITEM_RECIEVE = 1
val ITEM_SENT = 2
class SentViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
{
val sentMessage = itemView.findViewById<TextView>(R.id.txt_sent_message)
}
class RecieveViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
{
val recieveMessage = itemView.findViewById<TextView>(R.id.txt_recieve_message)
}
override fun getItemViewType(position: Int): Int {
val currentMessage = messageList[position]
if (FirebaseAuth.getInstance().currentUser?.uid.equals(currentMessage.senderId)) {
return ITEM_SENT
}
else {
return ITEM_RECIEVE
}
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
if (viewType == 1)
{
val view = LayoutInflater.from(context).inflate(R.layout.recieve, parent, false)
Log.d("tag2", "testrecieveviewholderview11")
return RecieveViewHolder(view)
}
else
{
val view = LayoutInflater.from(context).inflate(R.layout.sent, parent, false)
Log.d("tag", "testsentviewholderview22")
return SentViewHolder(view)
}
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
val currentMessage = messageList[position]
if(holder.javaClass == SentViewHolder::class.java)
{
val viewHolder = holder as SentViewHolder
holder.sentMessage.text = currentMessage.message
}
else
{
val viewHolder = holder as RecieveViewHolder
holder.recieveMessage.text = currentMessage.message
}
}
override fun getItemCount(): Int {
return messageList.size
}
}
And ChatActivity
var firebaseUser: FirebaseUser? = null
private lateinit var messageRecyclerView: RecyclerView
private lateinit var messageBox: EditText
private lateinit var sendButton: ImageButton
private lateinit var messageAdapter: MessageAdapter
private lateinit var messageList: ArrayList<Message>
private lateinit var mRef: DatabaseReference
var recieverRoom: String? = null
var senderRoom: String? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_chat)
val intent = Intent()
val name = intent.getStringExtra("name")
val recieverUid = intent.getStringExtra("uid")
val senderUid = FirebaseAuth.getInstance().currentUser?.uid
mRef = FirebaseDatabase.getInstance().reference
senderRoom = recieverUid + senderUid
recieverRoom = senderUid + recieverUid
messageRecyclerView = findViewById(R.id.RecyclerViewChat)
messageBox = findViewById(R.id.messageBox)
sendButton = findViewById(R.id.sendButton)
messageList = ArrayList()
messageAdapter = MessageAdapter(this, messageList)
messageRecyclerView.layoutManager = LinearLayoutManager(this)
messageRecyclerView.scrollToPosition(messageAdapter.itemCount-1)
messageRecyclerView.adapter = messageAdapter
mRef.child("chats").child(senderRoom!!).child("messages")
.addValueEventListener(object : ValueEventListener{
override fun onDataChange(snapshot: DataSnapshot) {
messageList.clear()
for (postSnapshot in snapshot.children)
{
val message = postSnapshot.getValue(Message::class.java)
messageList.add(message!!)
}
messageAdapter.notifyDataSetChanged()
}
override fun onCancelled(error: DatabaseError) {
}
})
sendButton.setOnClickListener {
if (messageBox.text.toString().isEmpty() || messageBox.text.toString().isBlank())
{
messageBox.setText("")
}
else {
val message = messageBox.text.toString()
val messageObject = Message(message, senderUid)
mRef.child("chats").child(senderRoom!!).child("messages").push()
.setValue(messageObject).addOnSuccessListener {
mRef.child("chats").child(recieverRoom!!).child("messages").push()
.setValue(messageObject)
}
messageBox.setText("")
}
}
}
}
The error coming in this code is "Unresolved reference: message" and "Unresolved reference: senderId" in MessageAdapter. MessageAdapter is not able to take variables that are declared in Message class(message and senderId).
this is the chat functionality on my app but the messages aren't appearing on my app although it is getting updated in the firebase. when I hardcoded the values it is working. this is the conversation activity. I've used a chat fragment and adapter as well. But the messages are just not getting posted on the app. any alternative solutions or a solution for this would be nice.
private val firebaseDB = FirebaseFirestore.getInstance()
private val userId = FirebaseAuth.getInstance().currentUser?.uid
private val conversationAdapter = ConversationAdapter(arrayListOf(), userId)
private var chatId: String? = null
private var imageUrl: String? = null
private var otherUserId: String? = null
private var chatName: String? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_conversation)
chatId = intent.extras.getString(PARAM_CHAT_ID)
imageUrl = intent.extras.getString(PARAM_IMAGE_URL)
chatName = intent.extras.getString(chatName)
otherUserId = intent.extras.getString(PARAM_OTHER_USER_ID)
if (chatId.isNullOrEmpty() || userId.isNullOrEmpty()) {
Toast.makeText(this, "chat room error", Toast.LENGTH_LONG).show()
finish()
}
topNameTV.text = chatName
populateImage(this, imageUrl, topPhotoIV, R.drawable.default_user)
messagesRV.apply {
setHasFixedSize(false)
layoutManager = LinearLayoutManager(context)
adapter = conversationAdapter
}
firebaseDB.collection(DATA_CHATS)
.document(chatId!!)
.collection(DATA_CHAT_MESSAGES)
.orderBy(DATA_CHAT_MESSAGE_TIME)
.addSnapshotListener{ querySnapshot, firebaseFirestoreException ->
if(firebaseFirestoreException != null){
firebaseFirestoreException.printStackTrace()
return#addSnapshotListener
}else{
if (querySnapshot != null){
for(change in querySnapshot.documentChanges){
when(change.type){
DocumentChange.Type.ADDED -> {
val message = change.document.toObject(Convo::class.java)
if(message != null){
conversationAdapter.addMessage(message)
messagesRV.post {
messagesRV.smoothScrollToPosition(conversationAdapter.itemCount -1)
}
}
}
}
}
}
}
}
}
fun onSend(v: View) {
if (!messageET.text.isNullOrEmpty()){
val message = Convo(userId, messageET.text.toString(), System.currentTimeMillis())
firebaseDB.collection(DATA_CHATS).document(chatId!!)
.collection(DATA_CHAT_MESSAGES)
.document()
.set(message)
messageET.setText("",TextView.BufferType.EDITABLE)
}
}
companion object {
private val PARAM_CHAT_ID = "Chat id"
private val PARAM_IMAGE_URL = "Image url"
private val PARAM_OTHER_USER_ID = "Other user id"
private val PARAM_CHAT_NAME = "Chat name"
fun newIntent(context: Context?, chatId: String?, imageUrl: String?, otherUserId: String?
chatName: String?): Intent{
val intent = Intent(context,ConversationActivity::class.java)
intent.putExtra(PARAM_CHAT_ID,chatId)
intent.putExtra(PARAM_IMAGE_URL, imageUrl)
intent.putExtra(PARAM_OTHER_USER_ID, otherUserId)
intent.putExtra(PARAM_CHAT_NAME, chatName)
return intent
}
}
}
From the Android app, I wrote for I want to add, add a button in the toolbar that acts as a toggle. When the toggle is disabled (the default state) all posts should be shown, when it is enabled (after a tap) the list should only show the posts having user_id set to 1 and sorted by descending published_at. Tapping on the button again will return it to its default state.
Note that publishedAt returning date and publishedAt and user_id coming from postList from the server I want to know how can I implement above requirement what kind of steps should I have to follow
below my logic implementation in MainActivity.kt
class MainActivity : AppCompatActivity() {
#Inject
lateinit var restInterface: RestInterface
private fun initializeDagger() = App.appComponent.inject(this)
var context: Context? = null
private var filteredList: List<Post>? = null
private var recyclerView: RecyclerView? = null
private var switch1: Switch? = null
private var restAdapter: RestAdapter? = null
private var postList: List<Post>? = null
private var restList: RestList? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
initializeDagger()
recyclerView = findViewById(R.id.recycler_view)
switch1 = findViewById(R.id.switch1)
fetchPosts()
switch1.setOnclickListener {
postList.forEach { postItem: Post ->
if (postItem.userId == 1)
filteredList.add(postItem)
}
recyclerView.post = filteredList
recyclerView.notifyDatasetChanged()
}
// Collections.sort( filteredList.get(4).publishedAt, Collections.reverseOrder());
}
private fun fetchPosts() {
val progress = ProgressDialog(this)
progress.setMessage("Loading... ")
progress.isIndeterminate = true
progress.show()
restInterface?.getPosts?.subscribeOn(Schedulers.newThread())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(object : DisposableSingleObserver<Response<RestList>>() {
override fun onSuccess(response: Response<RestList>) {
restList = response.body()
val layoutManager = LinearLayoutManager(applicationContext)
recyclerView?.layoutManager = layoutManager
// initialize postList with posts
postList = restList?.posts
restAdapter = postList?.let { RestAdapter(it, restList) }
recyclerView?.adapter = restAdapter
}
override fun onError(e: Throwable) {
progress.dismiss()
Toast.makeText(context, "" + e.message, Toast.LENGTH_SHORT).show()
}
})
}
}
below my RestAdapter.kt
class RestAdapter(val post: List<Post>,val restList: RestList?) : RecyclerView.Adapter<RestAdapter.PostHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PostHolder {
val itemView = LayoutInflater.from(parent.context).inflate(R.layout.post_list, null)
return PostHolder(itemView)
}
override fun getItemCount(): Int {
return post.size
}
override fun onBindViewHolder(holder: PostHolder, position: Int) {
val posts = post[position]
Picasso
.get() // give it the context
.load(posts.image) // load the image
.into(holder.postImage)
holder.userId.text = posts.userId.toString()
holder.postTitle.text = posts.title
holder.postTime.text = posts.publishedAt
holder.postDescription.text = posts.description
}
class PostHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val postImage: ImageView = itemView.findViewById(R.id.postImage)
val userId: TextView = itemView.findViewById(R.id.userId)
val postTitle: TextView = itemView.findViewById(R.id.postTitle)
val postTime: TextView = itemView.findViewById(R.id.postTime)
val postDescription: TextView = itemView.findViewById(R.id.postDescription)
}
}
You can use method .sortedByDescending or .sortedBy on list :)
[Edit]
I give you a simple solution for that, maybe not the best but should work
1. Change RestAdapter constructor to (var post: List,val restList: RestList?)
Add method to updateData in apadapter:
fun filterData(isChecked: Boolean) {
if (isChecked) {
val filteredList = arrayListOf<Post>()
filteredList.addAll(restList?posts.filter { it.user_id == 1 }.sortedByDescending { it.published_at })
post = filteredList
} else {
post = restList?.posts
}
notifyDatasetChanged()
}
And in your class use this:
switch1.setOnclickListener {
restAdapter?.filterData(switch1.isChecked()//state of your switch i.e isChecked() which return true or false)
}
I am trying to rewrite an existing app in Kotlin for the purpose of learning and getting used to the language. The app allows the user to enter and modify entries and each entry is hosted in a RecyclerView list with a custom list item. Although entries are successfully added to the database (confirming that with Toast messages), there isn't a list item present for the said entry.
This is my adapter:
class EntryAdapter : androidx.recyclerview.widget.ListAdapter<Entry, EntryAdapter.ViewHolder>(DIFF_CALLBACK){
private var listener: OnItemLongClickListener? = null
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.recyclerview_item, parent, false)
return ViewHolder(view)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int){
val currentEntry = getItem(position)
holder.hint.text = currentEntry.hint
holder.username.text = currentEntry.username
holder.password.text = currentEntry.password
}
fun getEntryAt(position: Int): Entry{return getItem(position)}
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val username: TextView = itemView.findViewById(R.id.username_display)
val password: TextView = itemView.findViewById(R.id.password_display)
val hint: TextView = itemView.findViewById(R.id.hint_display)
init {
itemView.setOnLongClickListener{
val position = adapterPosition
if (listener != null && position != RecyclerView.NO_POSITION){listener!!.onItemLongClick(getItem(position))}
true
}
}
}
interface OnItemLongClickListener{fun onItemLongClick(entry: Entry)}
fun setOnItemLongClickListener(listener: OnItemLongClickListener){this.listener = listener}
companion object{
private val DIFF_CALLBACK = object : DiffUtil.ItemCallback<Entry>(){
override fun areItemsTheSame(oldItem: Entry, newItem: Entry): Boolean{return oldItem.id == newItem.id}
override fun areContentsTheSame(oldItem: Entry, newItem: Entry): Boolean{return oldItem.username == newItem.username && oldItem.hint == newItem.hint && oldItem.password == newItem.password}
}
}
}
This is my AddEditEntry.kt activity. The way it works is that when the user wishes to make an entry, he/she clicks on the FAB button which invokes this activity. This activity is where the user enters the entry and adds it to the database (and by extension, the RecyclerView) by clicking the saveEntry button:
class AddEditEntryActivity : AppCompatActivity() {
private var usernameEditText: EditText? = null
private var passwordEditText: EditText? = null
private var hintEditText: EditText? = null
private var passwordABCD: CheckBox? = null
private var passwordabcd: CheckBox? = null
private var password0123: CheckBox? = null
private var passwordSymbols: CheckBox? = null
private var radio4: RadioButton? = null
private var radio8: RadioButton? = null
private var radio12: RadioButton? = null
private var radio16: RadioButton? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_addedit_entry)
usernameEditText = findViewById(R.id.username_field)
passwordEditText = findViewById(R.id.password_field)
hintEditText = findViewById(R.id.hint_field)
passwordABCD = findViewById(R.id.upp_checkbox)
passwordabcd = findViewById(R.id.low_checkbox)
password0123 = findViewById(R.id.num_checkbox)
passwordSymbols = findViewById(R.id.sym_checkbox)
radio4 = findViewById(R.id.four)
radio8 = findViewById(R.id.eight)
radio12 = findViewById(R.id.twelve)
radio16 = findViewById(R.id.sixteen)
val generatePassword = findViewById<Button>(R.id.btn_password_generate)
val saveEntry = findViewById<Button>(R.id.btn_save)
val intent = intent
if (intent.hasExtra(EXTRA_ID)) {
title = getString(R.string.edit_entry)
saveEntry.setText(R.string.update_entry)
usernameEditText!!.setText(getIntent().getStringExtra(EXTRA_USERNAME))
passwordEditText!!.setText(getIntent().getStringExtra(EXTRA_PASSWORD))
hintEditText!!.setText(getIntent().getStringExtra(EXTRA_HINT))
}
else {title = "Add Entry"}
Objects.requireNonNull<ActionBar>(supportActionBar).setHomeAsUpIndicator(R.drawable.ic_close_white_24dp)
generatePassword.setOnClickListener { passwordEditText!!.setText(generatedPassword()) }
saveEntry.setOnClickListener {
val data = Intent()
data.putExtra(EXTRA_USERNAME, usernameEditText!!.text.toString())
data.putExtra(EXTRA_HINT, hintEditText!!.text.toString())
data.putExtra(EXTRA_PASSWORD, passwordEditText!!.text.toString())
val id = getIntent().getIntExtra(EXTRA_ID, -1)
if (id != -1) {data.putExtra(EXTRA_ID, id)}
setResult(Activity.RESULT_OK, data)
finish()
Toast.makeText(this, "data.putExtra() from AddEditEntryActivity", Toast.LENGTH_SHORT).show()
Toast.makeText(this, usernameEditText!!.text.toString(), Toast.LENGTH_SHORT).show()
Toast.makeText(this, hintEditText!!.text.toString(), Toast.LENGTH_SHORT).show()
Toast.makeText(this, passwordEditText!!.text.toString(), Toast.LENGTH_SHORT).show()
}
}
private fun generatedPassword(): String? {
var length = 0
val generatedString = StringBuilder()
val rand = Random()
val capitalLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
val lowercaseLetters = "abcdefghijklmnopqrstuvwxyz"
val numbers = "0123456789"
val characters = "!##$%^&*()"
if (radio4!!.isChecked) {length = 4}
else if (radio8!!.isChecked) {length = 8}
else if (radio12!!.isChecked) {length = 12}
else if (radio16!!.isChecked) {length = 16}
var totalCharacters = ""
if (passwordABCD!!.isChecked) {totalCharacters += capitalLetters}
if (passwordabcd!!.isChecked) {totalCharacters += lowercaseLetters}
if (password0123!!.isChecked) {totalCharacters += numbers}
if (passwordSymbols!!.isChecked) {totalCharacters += characters}
if (!totalCharacters.trim { it <= ' ' }.isEmpty() && length > 0) {
for (i in 0 until length) {generatedString.append(totalCharacters[rand.nextInt(totalCharacters.length)])}
return generatedString.toString()
}
else {Toast.makeText(this, "Not a valid password!", Toast.LENGTH_SHORT).show()}
return null
}
companion object {
val EXTRA_USERNAME = "com.ozbek.cryptpass.EXTRA_USERNAME"
val EXTRA_HINT = "com.ozbek.cryptpass.EXTRA_HINT"
val EXTRA_PASSWORD = "com.ozbek.cryptpass.EXTRA_PASSWORD"
val EXTRA_ID = "com.ozbek.cryptpass.EXTRA_ID"
}
}
And this is the MainActivity.kt file where the user enters new entries. The first if block in onActivityResult() is the code that retrieves the entries from AddEditEntry.kt file and adds it to the entity class:
class MainActivity : AppCompatActivity(), LifecycleOwner {
private lateinit var recyclerView: RecyclerView
internal lateinit var adapter: EntryAdapter
private lateinit var floatingActionButton: FloatingActionButton
private lateinit var layoutManager: RecyclerView.LayoutManager
private lateinit var addEditEntryActivity: AddEditEntryActivity
internal lateinit var entry: Entry
private lateinit var viewModel: EntryViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val ctx = this.applicationContext
val sentryDsn = "https://93f06d5090d646ac9443a3fc531fc5de#sentry.io/1454826:port/1?options"
Sentry.init(sentryDsn, AndroidSentryClientFactory(ctx))
Sentry.init(AndroidSentryClientFactory(ctx))
viewModel = ViewModelProviders.of(this).get(EntryViewModel::class.java)
viewModel.allEntries.observe(this, Observer { entries -> adapter.submitList(entries) })
adapter = EntryAdapter()
layoutManager = LinearLayoutManager(this)
recyclerView = findViewById<RecyclerView>(R.id.userpass_recyclerview).apply{
layoutManager = layoutManager
adapter = adapter
}
addEditEntryActivity = AddEditEntryActivity()
entry = Entry()
floatingActionButton = findViewById<FloatingActionButton>(R.id.generate_fab)
floatingActionButton.setOnClickListener {
val intent = Intent(this#MainActivity, AddEditEntryActivity::class.java)
Toast.makeText(this, "AddEditActivity started", Toast.LENGTH_SHORT).show()
startActivityForResult(intent, ADD_ENTRY_REQUEST)
}
ItemTouchHelper(object : ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT or ItemTouchHelper.RIGHT) {
override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder): Boolean {return false}
override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {viewModel.delete(adapter.getEntryAt(viewHolder.adapterPosition))}
}).attachToRecyclerView(recyclerView)
adapter.setOnItemLongClickListener (object: EntryAdapter.OnItemLongClickListener {
override fun onItemLongClick(entry: Entry){
val intent = Intent(this#MainActivity, AddEditEntryActivity::class.java)
intent.putExtra(AddEditEntryActivity.EXTRA_ID, entry.id)
intent.putExtra(AddEditEntryActivity.EXTRA_USERNAME, entry.username)
intent.putExtra(AddEditEntryActivity.EXTRA_HINT, entry.hint)
intent.putExtra(AddEditEntryActivity.EXTRA_PASSWORD, entry.password)
startActivityForResult(intent, EDIT_ENTRY_REQUEST)
}
})
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
menuInflater.inflate(R.menu.menu, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
val itemId = item.itemId
if (itemId == R.id.delete_all) {viewModel.deleteAll()}
return super.onOptionsItemSelected(item)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == ADD_ENTRY_REQUEST && resultCode == Activity.RESULT_OK) {
Toast.makeText(this, data?.getStringExtra(AddEditEntryActivity.EXTRA_USERNAME), Toast.LENGTH_SHORT).show()
Toast.makeText(this, data?.getStringExtra(AddEditEntryActivity.EXTRA_PASSWORD), Toast.LENGTH_SHORT).show()
Toast.makeText(this, data?.getStringExtra(AddEditEntryActivity.EXTRA_HINT), Toast.LENGTH_SHORT).show()
val username = Objects.requireNonNull<Intent>(data).getStringExtra(AddEditEntryActivity.EXTRA_USERNAME)
val password = Objects.requireNonNull<Intent>(data).getStringExtra(AddEditEntryActivity.EXTRA_PASSWORD)
val hint = Objects.requireNonNull<Intent>(data).getStringExtra(AddEditEntryActivity.EXTRA_HINT)
val entry = Entry(username, hint, password)
viewModel.insert(entry)
Toast.makeText(this, "Entry added!", Toast.LENGTH_SHORT).show()
} else if (requestCode == EDIT_ENTRY_REQUEST && resultCode == Activity.RESULT_OK) {
Toast.makeText(this, data!!.getIntExtra(AddEditEntryActivity.EXTRA_ID, -1), Toast.LENGTH_SHORT).show()
Toast.makeText(this, data.getStringExtra(AddEditEntryActivity.EXTRA_USERNAME), Toast.LENGTH_SHORT).show()
Toast.makeText(this, data.getStringExtra(AddEditEntryActivity.EXTRA_PASSWORD), Toast.LENGTH_SHORT).show()
Toast.makeText(this, data.getStringExtra(AddEditEntryActivity.EXTRA_HINT), Toast.LENGTH_SHORT).show()
val id = Objects.requireNonNull<Intent>(data).getIntExtra(AddEditEntryActivity.EXTRA_ID, -1)
if (id == -1) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_SHORT).show()
return
}
val username = Objects.requireNonNull<Intent>(data).getStringExtra(AddEditEntryActivity.EXTRA_USERNAME)
val password = Objects.requireNonNull<Intent>(data).getStringExtra(AddEditEntryActivity.EXTRA_PASSWORD)
val hint = Objects.requireNonNull<Intent>(data).getStringExtra(AddEditEntryActivity.EXTRA_HINT)
val entry = Entry(username, hint, password, id)
entry.id = id
viewModel.update(entry)
Toast.makeText(this, "Entry updated", Toast.LENGTH_SHORT).show()
} else {Toast.makeText(this, "Entry not added!", Toast.LENGTH_SHORT).show()}
}
companion object {
const val ADD_ENTRY_REQUEST = 1
const val EDIT_ENTRY_REQUEST = 2
}
}
I can add more code per request. This is the full Github repo.
Here is the problem:
recyclerView = findViewById<RecyclerView>(R.id.userpass_recyclerview).apply{
layoutManager = layoutManager
adapter = adapter
}
Idk what's going on but it seems like you're initializing them to themselves. Don't do that. Its good practice to keep your variable names distinct. Refactor the objects like this:
internal lateinit var entryAdapter: EntryAdapter
private lateinit var linearLayoutManager: RecyclerView.LayoutManager
And make the following changes in your onCreate():
recyclerView = findViewById<RecyclerView>(R.id.userpass_recyclerview).apply{
adapter = entryAdapter
layoutManager = linearLayoutManager
}