Getting nil whilst defining a cell in a UICollectionView
0
I have to get the cell at a specific index for my application. That's the way I do it:
let cell1 = gamePad.cellForItem(at: [0, actualBund])
let cell2 = gamePad.cellForItem(at: [0, actualBund + 1])
let cell3 = gamePad.cellForItem(at: [0, actualBund + 2])
let cell4 = gamePad.cellForItem(at: [0, actualBund + 3])
When I now want to assign a backgroundColor to the cell, that doesn't work, because the cell constants are nil.
What can be done about this problem?
ios swift uicollectionview
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
|
show 4 more comments
0
I have to get the cell at a specific index for my application. That's the way I do it:
let cell1 = gamePad.cellForItem(at: [0, actualBund])
let cell2 = gamePad.cellForItem(at: [0, actualBund + 1])
let cell3 = gamePad.cellForItem(at: [0, actualBund + 2])
let cell4 = gamePad.cellForItem(at: [0, actualBund + 3])
When I now want to assign a backgroundColor to the cell, that doesn't work, because the cell constants are nil.
What can be done about this problem?
ios swift uicollectionview
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
2
Create the indexPath, get the cell for indexpath, play around.
– NSNoob
Nov 21 '18 at 14:10
This is not defining a cell. This is not anIndexPathyou're passing in there.
– inokey
Nov 21 '18 at 14:16
2
You can only get a visible cell. But why do you need the cell? You should only be accessing your data model.
– rmaddy
Nov 21 '18 at 14:27
Read the documentation ofcellForItem(at:). Also that's strange because you don't seem to create anIndexPath.
– Larme
Nov 21 '18 at 14:46
@Larme actualBund is of type Int
– SWIFTstuff
Nov 21 '18 at 15:57
|
show 4 more comments
0
0
0
I have to get the cell at a specific index for my application. That's the way I do it:
let cell1 = gamePad.cellForItem(at: [0, actualBund])
let cell2 = gamePad.cellForItem(at: [0, actualBund + 1])
let cell3 = gamePad.cellForItem(at: [0, actualBund + 2])
let cell4 = gamePad.cellForItem(at: [0, actualBund + 3])
When I now want to assign a backgroundColor to the cell, that doesn't work, because the cell constants are nil.
What can be done about this problem?
ios swift uicollectionview
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
I have to get the cell at a specific index for my application. That's the way I do it:
let cell1 = gamePad.cellForItem(at: [0, actualBund])
let cell2 = gamePad.cellForItem(at: [0, actualBund + 1])
let cell3 = gamePad.cellForItem(at: [0, actualBund + 2])
let cell4 = gamePad.cellForItem(at: [0, actualBund + 3])
When I now want to assign a backgroundColor to the cell, that doesn't work, because the cell constants are nil.
What can be done about this problem?
ios swift uicollectionview
ios swift uicollectionview
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
edited Nov 21 '18 at 14:27
rmaddy
245k27325388
245k27325388
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
asked Nov 21 '18 at 14:04
SWIFTstuffSWIFTstuff
187
187
2
Create the indexPath, get the cell for indexpath, play around.
– NSNoob
Nov 21 '18 at 14:10
This is not defining a cell. This is not anIndexPathyou're passing in there.
– inokey
Nov 21 '18 at 14:16
2
You can only get a visible cell. But why do you need the cell? You should only be accessing your data model.
– rmaddy
Nov 21 '18 at 14:27
Read the documentation ofcellForItem(at:). Also that's strange because you don't seem to create anIndexPath.
– Larme
Nov 21 '18 at 14:46
@Larme actualBund is of type Int
– SWIFTstuff
Nov 21 '18 at 15:57
|
show 4 more comments
2
Create the indexPath, get the cell for indexpath, play around.
– NSNoob
Nov 21 '18 at 14:10
This is not defining a cell. This is not anIndexPathyou're passing in there.
– inokey
Nov 21 '18 at 14:16
2
You can only get a visible cell. But why do you need the cell? You should only be accessing your data model.
– rmaddy
Nov 21 '18 at 14:27
Read the documentation ofcellForItem(at:). Also that's strange because you don't seem to create anIndexPath.
– Larme
Nov 21 '18 at 14:46
@Larme actualBund is of type Int
– SWIFTstuff
Nov 21 '18 at 15:57
2
2
Create the indexPath, get the cell for indexpath, play around.
– NSNoob
Nov 21 '18 at 14:10
Create the indexPath, get the cell for indexpath, play around.
– NSNoob
Nov 21 '18 at 14:10
This is not defining a cell. This is not an
IndexPath you're passing in there.– inokey
Nov 21 '18 at 14:16
This is not defining a cell. This is not an
IndexPath you're passing in there.– inokey
Nov 21 '18 at 14:16
2
2
You can only get a visible cell. But why do you need the cell? You should only be accessing your data model.
– rmaddy
Nov 21 '18 at 14:27
You can only get a visible cell. But why do you need the cell? You should only be accessing your data model.
– rmaddy
Nov 21 '18 at 14:27
Read the documentation of
cellForItem(at:). Also that's strange because you don't seem to create an IndexPath.– Larme
Nov 21 '18 at 14:46
Read the documentation of
cellForItem(at:). Also that's strange because you don't seem to create an IndexPath.– Larme
Nov 21 '18 at 14:46
@Larme actualBund is of type Int
– SWIFTstuff
Nov 21 '18 at 15:57
@Larme actualBund is of type Int
– SWIFTstuff
Nov 21 '18 at 15:57
|
show 4 more comments
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2
Create the indexPath, get the cell for indexpath, play around.
– NSNoob
Nov 21 '18 at 14:10
This is not defining a cell. This is not an
IndexPathyou're passing in there.– inokey
Nov 21 '18 at 14:16
2
You can only get a visible cell. But why do you need the cell? You should only be accessing your data model.
– rmaddy
Nov 21 '18 at 14:27
Read the documentation of
cellForItem(at:). Also that's strange because you don't seem to create anIndexPath.– Larme
Nov 21 '18 at 14:46
@Larme actualBund is of type Int
– SWIFTstuff
Nov 21 '18 at 15:57