composer passing parameters?

Getting Started Newbie Questions
#21

rob,

line 92 is commented out. I fixed the reference to RowNumber to rowNumber. missed that one

thanks for taking time to look at this.

daveC

[lua]

print("5S------(87)— event.params.rowNumber is " … event.params.rowNumber )

print("5S------(88)— params.rowNumber is " … params.rowNumber )

–print("5S------(89)— rowNumber is " … rowNumber )

print("5S------(90)— row is " … row )

print("5S------(91)— myData is " … tostring(myData))

–print("5S------(92)-------- myData[row].name is " … myData[row].name)     –< commented out

–print("5S------(93)-------- myData[params.rowNumber].name is " … myData[params.rowNumber].name)

[/lua]

#22

The error:

C:\Users\dcantera\Documents\Corona Projects\TabBarApp3,2017-04-10e\view5.lua:92: attempt to index field ‘?’ (a nil value)

means that in line 92, an index to something is nil. The only thing in line 92 you have a table named myData and you’re trying to find row, which is 7. So perhaps myData[7] is nil. Perhaps myData[7] exists but .name doesn’t exist.

Rob

#23

rob,

this is puzzling, the table, myData in view4.lua, is full though and item 5, Pebbles is found as console print results showed. that’s why I tested it with setting  i = 5, and then printing the .name value just to make sure I had transferred the table successfully from scene4 to scene5 in params.

ugh.

[lua]

local myData = {}

myData[1] = { name=“Fred”,    phone=“555-555-1234”, relationship=“B”, hotFlag=“Y”, lflag="N”}

myData[2] = { name=“Barney”,  phone=“555-555-1235”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[3] = { name=“Wilma”,   phone=“555-555-1236”, relationship=“S”, hotFlag=“Y”, lflag="N”}

myData[4] = { name=“Betty”,   phone=“555-555-1237”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[5] = { name=“Pebbles”, phone=“555-555-1238”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[6] = { name=“BamBam”,  phone=“555-555-1239”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[7] = { name=“Dino”,    phone=“555-555-1240”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[8] = { name=“FredB”,    phone=“555-555-1234”, relationship=“BS”, hotFlag=“N”, lflag="N”}

myData[9] = { name=“BarneyB”,  phone=“555-555-1235”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[10] = { name=“WilmaB”,   phone=“555-555-1236”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[11] = { name=“BettyB”,   phone=“555-555-1237”, relationship=“B”, hotFlag=“N”, lflag=“N”}

myData[12] = { name=“PebblesB”, phone=“555-555-1238”, relationship=“S”, hotFlag=“N”, lflag="N”}

myData[13] = { name=“BamBamB”,  phone=“555-555-1239”, relationship=“B”, hotFlag=“N”, lflag=“N”}

myData[14] = { name=“DinoB”,    phone=“555-555-1240”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[15] = { name=“WilmaC”,   phone=“555-555-1236”, relationship=“S”, hotFlag=“N”, lflag="N”}

myData[16] = { name=“CettyC”,   phone=“555-555-1237”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[17] = { name=“PebblesC”, phone=“555-555-1238”, relationship=“BS”, hotFlag=“N”, lflag=“N”}

myData[18] = { name=“CamCamC”,  phone=“555-555-1239”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[19] = { name=“DinoC”,    phone=“555-555-1240”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[20] = { name=“WilmaD”,   phone=“555-555-1236”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[21] = { name=“DettyD”,   phone=“555-555-1237”, relationship=“S”, hotFlag=“N”, lflag="N”}

myData[22] = { name=“PebblesD”, phone=“555-555-1238”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[23] = { name=“DamDamD”,  phone=“555-555-1239”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[24] = { name=“DinoD”,    phone=“555-555-1240”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[25] = { name=“WilmaD”,   phone=“555-555-1236”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[26] = { name=“DettyD”,   phone=“555-555-1237”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[27] = { name=“PebblesD”, phone=“555-555-1238”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[28] = { name=“DamDamD”,  phone=“555-555-1239”, relationship=“B”, hotFlag=“N”, lflag="N”}

myData[29] = { name=“DinoD”,    phone=“555-555-1240”, relationship=“B”, hotFlag=“N”, lflag="N”}

[/lua]