Posts Tagged ‘android’

Android 4 and Calendar crash


After I got a new phone with Android 4 (ICS), my calendar crashed as
soon as I enabled sync of my google calendar. After *lots* of
googling, I finally found the cause: At least one of the events in the
calendar is “corrupt”, and in earlier Android versions this has been
handled better than in the new Android. In the new, it gets real sad
and the whole calendar application crashes.

The solution (also found after *lots* of googling):
1) Log into your google calendar on a PC in a browser.
2) Go to calendar settings and export the whole calendar to an ICS-file.
3) Make sure you have the ICS-file (open it in a text editor)
4) Delete your calendar (or all events in it if it’s your main
calendar) on the web / google calendar
5) If you have more than one calendar, repeat steps 2-4
6) Import your ICS-file back to the google calendar 
7) If you have more than one calendar, repeat step 7 

For me this solved everything. From what I read, some will get an
error when importing back in, and then it will state the line number
the problem is in. This can be a malformed time zone, some funky
recurring event and so on. In that case:
a) Open the ICS-file in an editor
b) Fix the malformed line
c) Go to step 6)

Hope that was helpful, it solved all my problems at least 🙂

PS: I read that most of these errors come from using programs that
sync your outlook/exchange calendar to google. It probably messes up
recurring events and timezones sometimes, and the event ends up
corrupt. For some reason Google doesn’t detect this, and you get a
big problem on the Android that crashes when it gets to such a
malformed entry.

Wlan Password for guests


If you, as me, have a very long password for your wlan, it’s tiresome
to give out the password to random guests who need to connect.

Easy solution: Go to this web page and choose Wifi Network. Then fill
in your ssid, password and type of encryption and you get a QR-code to
print and give to guests. All your guest need to do, is scan the QR
code with f.ex barcode scanner on Android (or similar on other
phones), and they will connect automatically!


How to change memory card on an Android-phone



Many upgrade their memory cards in their Android phones to a bigger
one, and as many of those I thought it was just to insert the new one,
and copy back all the data. For many reasons, that is not just so

1) Your old card most likely contains more than one partition – a
swap, an ext2/3 partition and the big fat32-partition with your files
on it.
2) Your applications might depend on the data on your old partitions
to start, and your phone might not boot up without it being present

So, here is how to do it (with linux anyway):
1) Turn off your phone
2) Insert the new memory card
3) Start your phone in rescue mode by holding down the volume down
while turning it on
4) Partition it through rescue mode
5) Format it through rescue mode

Now we are ready to move your old data over to the new memory card.
If you have two card readers, you can do it directly from card to
card, if not, you need to go through an extra step. But the steps are
basicly the same.

If you have two card readers:
1) dd if=/dev/old_memory_card_partition
of=/dev/new_memory_card_partition conv=notrunc,noerror

If you only have one card reader:
1) Insert the old memory card
2) dd if=/dev/old_memory_card_partition
of=/location/to/save/memory_file.dd conv=notrunc,noerror
3) dd if=/location/to/save/memory_file.dd
of=/dev/new_memory_card_partition conv=notrunc,noerror

Repeat the dd-process for each partition (except swap).

At this point the new memory card has all your old data, and will work
if you insert it. However, since we copied the whole partition with
dd, it includes file system information like the size of the
partition. Which means that even though the new partition might be a
lot bigger than your old, it will only use up to the same space as the
old partition. You can see this if you insert the new memory card in
your card readser/linux machine and do a df – it will show a total
size that is right, use space is right, but free space is very small.
So we need to resize the filesystem(s):

1) Insert your new memory card
2) Start ‘parted’
3) Write ‘print devices’
4) Write ‘select ‘ and the device name for your memory card
5) Write ‘print’
6) Write ‘resize’ and follow the step by step choices it gives you.
Just resize it to fill the whole partition. It should be rather quick
to do
7) Repeat step 6 for each partition you copied over with dd
8) Write ‘quit’

At this point you should be able to mount your new partitions on the
linux machine and see that you have the right amount of free disk
space. You can unmount it, insert it into your phone and turn it on
and use it all 🙂

Good Luck!


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