If data in a recycler view item is null don't display the view holder
0
I want to check if data that comes from the server is null or not. If is not null then populate the recycler view item in my case being a CardView and if it is null don't display the CardView at all.
In my recycler view adapter i have this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
//...what shoud i write here ?
} else {
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
android kotlin asked Nov 20 '18 at 13:24
anMCanMC
256
add a comment |
0
I want to check if data that comes from the server is null or not. If is not null then populate the recycler view item in my case being a CardView and if it is null don't display the CardView at all.
In my recycler view adapter i have this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
//...what shoud i write here ?
} else {
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
asked Nov 20 '18 at 13:24
anMCanMC
256
I think this should be handled fromgetItemViewTypemethod ofRecyclerView.Adapter
– Ionut J. Bejan
Nov 20 '18 at 13:27
Can you tell me how exactly can I do that? I am relatively new to this.
– anMC
Nov 20 '18 at 13:33
add a comment |
0
0
0
I want to check if data that comes from the server is null or not. If is not null then populate the recycler view item in my case being a CardView and if it is null don't display the CardView at all.
In my recycler view adapter i have this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
//...what shoud i write here ?
} else {
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
asked Nov 20 '18 at 13:24
anMCanMC
256
I want to check if data that comes from the server is null or not. If is not null then populate the recycler view item in my case being a CardView and if it is null don't display the CardView at all.
In my recycler view adapter i have this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
//...what shoud i write here ?
} else {
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
asked Nov 20 '18 at 13:24
anMCanMC
256
asked Nov 20 '18 at 13:24
anMCanMC
256
asked Nov 20 '18 at 13:24
anMCanMC
256
asked Nov 20 '18 at 13:24
anMCanMC
256
asked Nov 20 '18 at 13:24
anMCanMC
256
256
I think this should be handled fromgetItemViewTypemethod ofRecyclerView.Adapter
– Ionut J. Bejan
Nov 20 '18 at 13:27
Can you tell me how exactly can I do that? I am relatively new to this.
– anMC
Nov 20 '18 at 13:33
add a comment |
I think this should be handled fromgetItemViewTypemethod ofRecyclerView.Adapter
– Ionut J. Bejan
Nov 20 '18 at 13:27
Can you tell me how exactly can I do that? I am relatively new to this.
– anMC
Nov 20 '18 at 13:33
I think this should be handled from
getItemViewType method of RecyclerView.Adapter– Ionut J. Bejan
Nov 20 '18 at 13:27
I think this should be handled from
getItemViewType method of RecyclerView.Adapter– Ionut J. Bejan
Nov 20 '18 at 13:27
Can you tell me how exactly can I do that? I am relatively new to this.
– anMC
Nov 20 '18 at 13:33
Can you tell me how exactly can I do that? I am relatively new to this.
– anMC
Nov 20 '18 at 13:33
add a comment |
2 Answers
2
active
oldest
votes
0
you should do something like this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
yourCardView.visibility = View.INVISIBLE //or GONE if you do not want to keep its space
holder.name?.text = ""
} else {
yourCardView.visibility = View.VISIBLE
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
but if cardview is your root item and you do not want to show the list item at all,you should change your main list with a code like this in your adapter constructor:
filteredList = itemsList?.filter {
(it.firstname.isNullOrEmpty() || it.lastName.isNullOrEmpty()).not()
}
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
add a comment |
0
Even if you change the visibility of the CardView the gap in the RecyclerView will be there.
It's better to remove the empty items from the list, prior to setting the adapter:
list.removeIf { it.firstName.isNullOrEmpty() && it.lastName.isNullOrEmpty() }
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
you should do something like this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
yourCardView.visibility = View.INVISIBLE //or GONE if you do not want to keep its space
holder.name?.text = ""
} else {
yourCardView.visibility = View.VISIBLE
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
but if cardview is your root item and you do not want to show the list item at all,you should change your main list with a code like this in your adapter constructor:
filteredList = itemsList?.filter {
(it.firstname.isNullOrEmpty() || it.lastName.isNullOrEmpty()).not()
}
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
add a comment |
0
you should do something like this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
yourCardView.visibility = View.INVISIBLE //or GONE if you do not want to keep its space
holder.name?.text = ""
} else {
yourCardView.visibility = View.VISIBLE
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
but if cardview is your root item and you do not want to show the list item at all,you should change your main list with a code like this in your adapter constructor:
filteredList = itemsList?.filter {
(it.firstname.isNullOrEmpty() || it.lastName.isNullOrEmpty()).not()
}
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
add a comment |
0
0
0
you should do something like this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
yourCardView.visibility = View.INVISIBLE //or GONE if you do not want to keep its space
holder.name?.text = ""
} else {
yourCardView.visibility = View.VISIBLE
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
but if cardview is your root item and you do not want to show the list item at all,you should change your main list with a code like this in your adapter constructor:
filteredList = itemsList?.filter {
(it.firstname.isNullOrEmpty() || it.lastName.isNullOrEmpty()).not()
}
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
you should do something like this:
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var firstName = itemsList[position].firstName
var lastName = itemsList[position].lastName
if (firstName.isNullOrEmpty() && lastName.isNullOrEmpty()) {
yourCardView.visibility = View.INVISIBLE //or GONE if you do not want to keep its space
holder.name?.text = ""
} else {
yourCardView.visibility = View.VISIBLE
holder.name?.text = firstName + " " + lastName
}
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val name = itemView.name
}
but if cardview is your root item and you do not want to show the list item at all,you should change your main list with a code like this in your adapter constructor:
filteredList = itemsList?.filter {
(it.firstname.isNullOrEmpty() || it.lastName.isNullOrEmpty()).not()
}
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
edited Nov 20 '18 at 13:40
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
answered Nov 20 '18 at 13:33
Reza.AbediniReza.Abedini
1,079813
1,079813
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
add a comment |
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
Can I set my cardView visibility in another way? I can't access it in adapter.
– anMC
Nov 26 '18 at 8:20
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
if cardview is in your list-item you should findViewById it in ViewHolder and access it same as holder.name (for example holder.cardView.visibility) but if cardview is in your activity you should hide it by passing an interface that implemented in your activity or pass it in adapter constructor
– Reza.Abedini
Nov 26 '18 at 8:50
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
Thank you so much it works now. One more thing though...even if I set the visibility to View.GONE the space of the cardView is still showing in the list.
– anMC
Nov 26 '18 at 8:59
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
set your item's height wrap_content and add this code in your activity : recyclerView.hasFixedSize = false it should works
– Reza.Abedini
Nov 26 '18 at 9:20
add a comment |
0
Even if you change the visibility of the CardView the gap in the RecyclerView will be there.
It's better to remove the empty items from the list, prior to setting the adapter:
list.removeIf { it.firstName.isNullOrEmpty() && it.lastName.isNullOrEmpty() }
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
add a comment |
0
Even if you change the visibility of the CardView the gap in the RecyclerView will be there.
It's better to remove the empty items from the list, prior to setting the adapter:
list.removeIf { it.firstName.isNullOrEmpty() && it.lastName.isNullOrEmpty() }
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
add a comment |
0
0
0
Even if you change the visibility of the CardView the gap in the RecyclerView will be there.
It's better to remove the empty items from the list, prior to setting the adapter:
list.removeIf { it.firstName.isNullOrEmpty() && it.lastName.isNullOrEmpty() }
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
Even if you change the visibility of the CardView the gap in the RecyclerView will be there.
It's better to remove the empty items from the list, prior to setting the adapter:
list.removeIf { it.firstName.isNullOrEmpty() && it.lastName.isNullOrEmpty() }
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
answered Nov 20 '18 at 13:41
forpasforpas
14.6k3625
14.6k3625
add a comment |
add a comment |
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I think this should be handled from
getItemViewTypemethod ofRecyclerView.Adapter– Ionut J. Bejan
Nov 20 '18 at 13:27
Can you tell me how exactly can I do that? I am relatively new to this.
– anMC
Nov 20 '18 at 13:33