ClouDBError: java.net.SocketException:Socket is closed

MIT App Inventor Help
#1

I am using the below blocks...when I type back button getting the folllowing error "ClouDBError: java.net.SocketException:Socket is closed" how we can slove this ?

Is this due to Timer or not closing CloudDB propoerly ? If yes...can you share the blocks which I need to use to solve the issue ?

blocks
blocks1474×460 71.1 KB

#2
#3

If you're setting up your own CloudDB server, you probably want to uncheck the UseSSL option and change the RedisPort to 6379, which is the default for non-SSL secured Redis.

#4

I am using Default CouldDB server and observing then Error when I do..back button...

#5

You should stop any clocks before switching screens, add that blocks code to your back button event

#6

Can you share which block we need to use to stop timer ?

#7

set Timer.AlwaysFires to false.

#8

OK Thanks. When I used "Back Presees Button" along with "open another screen Sreenaname "...not able to come out from the application....its keep on looping between Screens....any suggestion ?

#9

Switch screens correctly.

Also use timer enabled = false

To stop your clock

#10

The issue is...

screen1 (via Button with "Open another screen") -> scree2 Working
screen2 (via Button with "Open another screen") -> screen1 Working

expecting to exit from screen1 when I give backbutton from Phone....but its going to screen2....

#11

Show your relevant blocks for both screens

#12

screen1
screen11443×587 74.6 KB

screen2
screen21410×662 94.3 KB

Attached screen1 and screen2 (renamed Read_xxx_Wout_BL)....

#13

Don't open Screen1 from Screen2.

Instead, just close Screen2 and you will return to Screen1.

You need to close screens as often as you open them, to avoid stack overflow.

#14

when I try that...getting below error...
[ClouDBError: java.net.SocketException:Socket is closed]

disabled timer
disabled Always Fires
closed screen

#15

I setup an example app like this, with no errors...
SCREEN1 Blocks
image

SCREEN2 Blocks (timer set to 2 seconds)

image
image614×672 50.3 KB

#16

where timer is set to 2 sec ? It does mean...every 2 sec .Timer Block would call ?
I am using the below blocks..with that still seeing "Socket is closed" error..

blocks (1)
blocks (1)1302×1011 117 KB

#17
  1. What is your clock timer interval ?
  2. Set the "startValue" to a variable in the initialise block, and use that everywhere instead of "startValue"
  3. Remove TimerAlwaysFires property setter blocks - not needed.
  4. Give an example of your "startValue"
#18

where I need to add clock timer interval (Clockl.TimerInterval) ?
startvalue using as "ravi"

#19

You can set the interval in the clock designer, or use the interval propety setter block before you start the clock timer. Use milliseconds. My setting of 2 seconds is 2000 milliseconds.

#20

um....

If the storeValues are only set on initialise, why do you need a clock timer for getValues ?