Life with Android, part 3

Yesterday I made my Samsung Galaxy Ace much faster and improved the battery life by 50%: I uninstalled all apps I do not use several times per day and Facebook. I now have much more free memory, the phone feels much faster, the battery lasts longer and it does not run as warm as it did.

I really have to unlearn the habit I got with iPhone: I used to install apps that seemed interesting and then I might try them out later. I also had apps I had only used two or three times but thought they might be sometimes useful. That's not something you can do with an Android phone. It teaches you to live lean.

Today I learned it is a bad idea to take a call while listening to a podcast. When I had an iPhone and was listening to a podcast or music, a phone call would interrupt listening but it would automatically resume when the call ended. Not so with Android. The podcast app froze when the call ended. Android did eventually pop up a dialog telling me the app had become unresponsive and offered to force quit it. I did. But the phone was unusable after that. I tried to make a call but the screen went blank and I got a dialog telling me com.android.dialer was not responding. I tried to restart the phone. It would not turn off.

I have also learned listening to music takes around 50% of cpu. If I press the Home button to exit the music app and try to do something else, the music playback starts breaking up. It's like I was back in mid-1990s when my poor old 486 PC could barely play mp3 files, but only if I didn't do anything else at the same time.

I can only think the Android phones decode music using the main cpu. My old iPhone 3GS never missed a beat even when I did something else while listening to music. Maybe iPhones have dedicated hardware for mp3/aac decoding?

Life with Android, part 2

Every installed app consumes memory: Today I got a notification saying a text message could not be received because the phone memory was full. I began investigating and I think I now understand what is going on: I had been installing a few podcast applications and every one of the applications was running, consuming memory.

It seems every installed app leaves around a process, often two or more that just sit there using memory and a little bit of CPU. On a desktop computer that isn't so bad because modern operating systems can push unused memory to the disk and make it seem the computer has more memory than it really has. But this doesn't work on phones. There is only a limited amount of memory and when it's out, it really is out.

It took me quite a while and the use of some memory cleaning utility programs to clean up a few megabytes. (There actually is a market for utility apps that kill other apps!)

This means it is not possible to install many applications on an Android phone. Soon the memory will run out and then you need to uninstall something to make room for new apps, even if you had lots of space on your 32 GB microSD memory card.

In my opinion this is quite a remarkable difference to Apple's iOS, which powers iPhones, iPads and iPod Touch devices. When the user presses the home button, the app that was running is stopped. If the app was in the middle of doing something important, the app can ask the operating system to allow it to run for maximum of 10 more minutes. Then the app will be killed. The app is really gone. It will not consume memory, CPU or any other resources.

This makes it possible to install many more apps on an iOS device than an Android device with comparable memory simply because Apple engineers found out the apps that are not used do not have to be running.

And still one Android device vendor claims: "Android has true multitasking, not just task-switching." If this is the cost of multitasking, I'd rather have task-switching.

P.S. If I'm reading a web page on the Android phone and hit the home button, make a couple of calls and then go back to the web browser, why is it the browser shows the page from the top, not where I stopped reading? This must be some form of multitasking I wasn't familiar with...

Life with Android, part 1

I've been curious how the other people like their phones. I mean, of course, the people who use Android instead of the one true phone, the iPhone.

My teenage daughter has been torturing a Samsung Galaxy Ace for a year now and I suggested to her we could exchange phones for a limited period of time. She said yes, a bit too eagerly. I suspect I will have a difficult time getting the iPhone 4S back.

(I was told her friends at school said your dad must have lost a few marbles to do something so stupid as trade an iPhone for a crappy Android.)

Here are some observations from the last two days:

Battery: The battery lasts a day, barely. And I got a new, fresh battery for it. I have 3G, wifi, gps and bluetooth turned on, but I had them on in the iPhone too and it lasted almost two days with a single charge.

Unresponsive UI: Often you tap a button on the screen or the back button on the bezel and nothing happens. Thinking you missed the button you tap it again and then it suddenly wakes up and reads your tap twice. This could be due to the 800 MHz single-core CPU being too slow, but it never happened with my old iPhone 3GS, which also had an 800 MHz CPU.

Cannot be used as a clock replacement: When the power/lock button is pressed, the screen wakes up but the time is shown in very tiny numbers at the top-right corner of the screen. I think I will start wearing a watch.

Cannot be used as a music player: I copied files from my iTunes media folder to the /Music directory of the SD card. The built-in music player and couple of 3rd party ones I've tried do not understand the metadata of the .m4a files. Only the few music files that are in .mp3 show properly. The unrecognizable files are all lumped together under "Unknown artist". When tapped on, they do play, but it makes it difficult to find the song you are looking for.

I haven't yet found a good way to copy playlists. Software called doubleTwist starts reading the playlists from iTunes but did not finish even though I allowed it 24 hours to do its job. (I have about a dozen playlists, so the task should not be an enormous one.)

Software called TuneSync copies playlists and music over wifi and requires running a server on the Mac. It seems to work, but the free version only syncs 20 tracks. The full version is a bit expensive to my taste. (But I might go with that if nothing else works.)

A2DP profile on Bluetooth is not always used: I have a earpiece from Jabra that supports A2DP (stereo quality sound) but sometimes the phone chooses to communicate with phone quality protocol. This never happened with the iPhone.

Weather app thinks I'm in Hyvinkää. Every time I launch the built-in Weather app, it shows me the weather in Hyvinkää, Finland. That's about 50 km from my real location.

The Navigator is really good: I had never had a chance to use a turn-by-turn navigator app on a phone but I had plenty of experience on using the Maps app in iPhone while driving. Not fun. Usually my wife operates the iPhone on the car trips and she often gets lost. The Navigator app on the Android gave us clear, audible instructions that allowed the driver (me) to concentrate on the traffic and not play IT support.

I'll keep you posted on further developments.

Reading Helsingin Sanomat on the iPad

I have been reading Helsingin Sanomat on the iPad for 3 weeks. Here some first impressions:

No News Stand integration

The HS app does not integrate into the iPad News Stand, which means the morning paper is not automatically downloaded and waiting for you when you sit in the breakfast table. The download does not take very long, so this is not such a bad thing, just a minor annoyance.

The download for the weekly Nyt addition, on the other hand, takes a really long time, a few minutes. And the same goes for the Kuukausiliite.

Only partial articles available

Nowhere in the HS for iPad description does it say the articles would not appear in full. In practice, it seems long articles are truncated on the iPad. Sometimes the articles are truncated in mid-sentence, which makes me think there is maybe some internal maximum length for the article that sometimes cuts off the end of the story.

This is really infuriating! Today there was a long article in HS about the trials and tribulations of the Talvivaara mine and after reading it for 15 minutes I discovered the article ends in mid-sentence.

HS for iPad is not available every day

Like I described above, the HS app does not integrate with the News Stand. Instead it works like this: When you open the HS app for the first time in the morning, the thumbnail of yesterday's paper flies away from the screen and a thumbnail of today's paper flies in. Then you can click on the thumbnail and a progress bar will appear and after the download is complete, the paper opens up in full screen.

Except on some days the old paper does not fly away and the new one fly in. I don't know why. There is no indication of any error. There is no button to force it to check for a new issue. I checked several times during the day but the paper was not available.

The next day the new paper flew in. And now if I check the archive view, I can see the missing paper there and I can download and read it a day late.

I appreciate I can read the old issues to get up to speed but I still think the idea of the newspaper is very much in it being there in the morning with fresh news. (And remember, in the age of the Internet, the news in the daily newspaper are not that new.)

The ads

And finally, there are the ads. Yes, even when you are a paid subscriber, you still get to see the ads. There aren't that many: There's the ad on the front page, like in the HS dead tree version and then there is a full-page ad between sections of the paper, like between domestic and foreign news.

I have nothing against there being some ads, because the ads are also there in the dead tree version. I understand the subscriptions do not bring in enough money for Helsingin Sanomat to pay for it's staff so they must sell ads. 

But I do not want to be bothered by the ads.

Some of the ads in HS for iPad are animated, they take a long time to load and while they are loading, you cannot turn the page. You just sit there swiping across the screen and nothing happens. Eventually the ad has loaded, starts going thru its animation and eventually the app starts accepting user input and turns the page. On any other device this would probably be normal, but on the iPad the users have become used to the device being fast and responsive. An app that does not respond to user input sticks out like a sore thumb.

Conclusion

I am on the fence. The things I described above are annoying. On the other hand, I value the investigative work that goes into making a quality newspaper and I understand it does not come free, and I would like to give them money to support that work. And the free articles on the HS web site are short versions of the ones that appear in the paid version. And the Kuukausiliite with its excellent content is only available for paid customers.

I don't know. If they would fix the issues above, it would definitely recommend subscribing to the paid version, but now... I just don't know if I will cancel or not.

Getting rid of banking trojans

Today the Finnish Broadcasting Company (YLE) had a story about online criminals routinely stealing money from customers of Finnish banks.

I believe so far the banks have compensated customers for their losses. Of course, sooner or later, the banks must stop doing that because it will become too time-consuming and expensive. What will happen then?

Are the customers left to fend on their own?

Will the anti-virus industry step up their protection efforts and the problem will go away as soon as everyone has an up-to-date AV software installed?

Will Microsoft manage to lock down Windows so well that only the people who run old versions of Windows are affected and at the same time find a really good reason for people to upgrade to a newer Windows version?

Both of the latter scenarios are just extrapolations of current events. Undoubtedly, Microsoft will continue to improve security of Windows in upcoming versions. Just as likely, anti-virus software will probably continue to evolve to meet the challenges of the new threats.

Is that all? Is this the best we can hope for?

I think there is another solution. A very simple one. Unfortunately I cannot think of any way to make money out of it, so it probably won't happen. I will describe it here anyway, just in case someone decides to implement it.

Here it is: Banks should create a bootable read-only USB stick and give one to each customer. The read-only memory would boot a small Linux and run a web browser. The customers would be told to insert the stick into the PC and restart the computer before banking over the Internet.

There are a lot of details that can be debated: Should it be a USB stick or CD? Which Linux should it use? Should the browser run full-screen or in a window? Should it be made easy to use the Linux for other purposes too? Should the Linux be able to save files on the hard disk? Should it support Macs?

Those are minor details. Interesting details, I'm sure. But the core idea appears above in bold. If the banks would do that, they could sleep easy. The customers would know their money is safe.

This is such a simple idea I'm sure it has a ton of problems I have not thought about and because of those it just isn't a viable solution.

Just in case any bank decides to be bold and implement the idea, go ahead. I'm not going to charge money or patent the idea. And the bank cannot patent it either because they cannot claim the idea is theirs.

Between iPhones

Since I cycled home in the downpour of last Wednesday, my iPhone 3GS has not turned on the backlight.  I don't know if you have noticed, but the screen of the iPhone is darn near impossible to read with the backlight off, even in good lighting conditions.

Given that iPhone 5 doesn't launch in a week, I find myself between iPhones.

Rummaging through the kitchen drawers produced a functioning Nokia 5000d-2 and a 4 GB iPod mini. Maybe I can pretend I'm just trying to be retro until iPhone 5 is available in Finland?

Some observations about the phone:

The first thing that strikes you when you pick up the Nokia 5000d-2 is it's feather-like weight, only 74 g. It is thin and light enough to lose in your trouser pockets. The battery, even though it is old, lasts a few days. That seems incredible to me because I am used to charging my phone during every night and often during daytime too.

The user-interface is slow and feels like it is from the stone age. 

There is very little on-board memory (12 MB of which about 9 MB are left to the user.) so uploading music files on it is not really an option. There is no slot for memory card. The headphone jack is too small for standard 3.5 mm plug. The phone has a built-in radio but it requires headphones to work.

The user-experience is riddled with annoyances like:

• The automatic key lock only engages if the phone is on the home screen.
• The backlight turns off automatically, but the next key press doesn't just turn on the backlight, the key press also takes effect. E.g. if you are in the middle of composing an SMS and get distracted, you'd better not press the biggest key on the keyboard. Yes, it will wake up the phone but it will also immediately send the message.

The web browser is terrible, but installing Opera Mini helps a lot. There is no 3G support, so browsing is slow. Email, even Gmail, is integrated in the messaging menu. Reading emails with this is not fun, but you could do it in a pinch. 

Facebook status can be updated by sending email and nowadays Tweets can be sent as SMS to Finnish phone number.

The only things I'm really missing are my calendar from work Exchange server and GPS support for Endomondo or a similar exercise-logging app.

Some observations about the iPod mini:

The battery is a bit old and tired. It took a couple of hours of charging before it woke up and iTunes connected with it. But it still works and seems fully supported by iTunes. But no new software updates available for it, I see.

The click-wheel was an innovative user-interface that still feels fresh. The screen is positively minuscule and monochrome. This device was built for listening music, period.

The 4 GB size means I have to scale down my music collection, but it was easy to do. On iTunes synching screen I checked my "Coding music" playlist and a new option "Fill available space with music". The last option was not available back when I was using the mini for real. A really useful option!

The iPod mini came with a belt-clip, which is good for cyclists during the summer months if all the cycling shirts (with large back pockets) are in the laundry. The clip is less useful now when the weather is so cold I'm wearing a jacket which has pockets big enough to carry any size of phone or iPod. The clip can actually be removed and the mini is much smaller without it.

All in all, I think I can survive with this setup with some time, weeks or even months. The rumors say iPhone 5 comes out on October 5th, so I will be OK, even if it is rolled out in Finland a bit later.

Browser resource usage

The other day I had Safari running all day and before going to bed I started Activity Monitor and checked what's going on. I was surprised to see my Mac was swapping. It usually isn't, not any more after I got a new Mac mini with 4 gigabytes of RAM.

The cause for swapping was Safari 5 taking up just under 1 GB. Eh!??!

I did a test. I opened Safari, Firefox and Opera and loaded each with 3 tabs: Twitter, Facebook and Gmail and let it simmer for 5 hours.

Browser	Version	Initial RAM use	RAM use after 5h	CPU usage
Safari	5.0	185 MB	301 MB	0.1%
Firefox	3.6.3	160 MB	157 MB	3.3%
Opera	10.53	205 MB	249 MB	7%

I don't think I can afford to run Safari now that it uses so much memory. Incredibly, Firefox used less memory after 5 hours than right after loading the pages! I think if anyone these days says Firefox is a bloated browser, they are badly mistaken.

I also followed the CPU usage of the browsers. It seemed to stay constant, so I did not include initial and after-5-hours figure in the table. To Safari's credit, it runs fast and causes practically no CPU load even with these Javascript-intensive pages. Opera uses so much CPU, it would start to be noticeable if all the 3 users on this Mac would use Opera.

Based on the figures above, Firefox is my new default browser.

Software Engineering Radio - the podcast for professional software developers

Interesting presentation of the new C++ standard. 

Kuuntele tämä podcast iTunesissa:

http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=120906714

-- Sami

Software Engineering Radio - the podcast for professional software developers

Kuuntele tämä podcast iTunesissa:

http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=120906714

-- Sami

The only sportscast I like

Kuuntele tämä podcast iTunesissa:

http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=78561049

-- Sami

Hudson iPhone app

http://hudson-mobi.com/

Usability of modern computers

Lately I have been helping elderly family members with their computers and other home electronics, so I have been offered some rare insights into the usability of modern-day gadgets.

Let me outline some use cases that seem to be common, at least to the elderly around me:

Printing photos

This is the most common use case. Digital cameras are cheap and lots of photos are taken in all the family occasions. The cameras are easy to use: Power on, point and shoot. It is the part that comes later that is problematic.

The user has shot the photos. The next step is to get them printed. The user has a color inkjet printer. The printer is connected to the computer. The computer also has a memory card reader.

The user needs to remove the memory card from the camera and insert it to the card reader. If the user is lucky, some software is automatically started that does something and takes the photos from the memory card and scurries them away somewhere in the bowels of the machine.

The user then removes the memory card from the reader and gets insulted by the machine that he has done something stupid.

Now the user has to find the correct icon to click, then find his photos somewhere in the windows on the screen and then find something to click to print the photos. Then the user also must remember to change the printer settings for printing on 10 x 15 photo paper, not A4 plain paper he printed yesterday's fish casserole recipe.

That was such a tiresome exercise! Why was it so difficult? What the user really wanted to do was to connect the camera to the printer and press a button titled "Print my photos"

When the photo is printed, the print is the end result. It can be enjoyed together with friends and family in the living room.

The user does not find any value in the digital versions of the photos stored somewhere in the computer. The user does not easily find his photos in the computer, they are difficult to view because they are so small and it is difficult to move from one picture to the next.

Luckily these days there are printers and cameras that can print photos without the troublesome computer making things difficult.

Watching camcorder videos

Camcorders are also cheap these days and what would be more fun than shooting moving video clips of grandchildren while they play and do many other nice things. These are also pretty easy to use: Power on, point and shoot normally works with these. Of course there are a lot of menus in strange languages but if one stubbornly ignores them, they will go away and stop bothering you.

Again, the trouble starts when these videos are to be presented on the big flat-screen TV in the living room.

The camcorder has a USB connector. The TV has a USB connecter in the back. How fortunate! The video is obviously going to be play on the screen as soon as a USB cable is connected between the camcorder and the TV.

Unfortunately it did not. It turns out the TV does not know how to play video. It can only show still photos from the camcorder's memory.

But it is possible to make a DVD disc from the videos. The downside is, it involves using the computer again and we already know from our past experience with printing photos how fun that was.

Sony has spotted a market in here and makes a product called DVDirect, a box you connect the camcorder to, insert a blank dvd and press a button. Simple and easy. Our user is going to get one of these so he does not have to deal with the troublesome computer.

Watching photos on the TV

From the previous exercise the user discovered it is possible to watch photos on the living room's big flat-screen TV if one can get the photos on a USB memory stick.

Obtaining USB sticks is easy. They are commonly sold at cash registers of convenience stores among candy, cigarettes and condoms.

Now the user needs to talk the computer into releasing some of the photos it is keeping hostage to the USB stick. The user has no idea how to go about it but the user knows how to call a young family member and get them to use remote screen sharing and export the photos on the USB stick.

Remove the USB stick from the computer. (Ignore the insulting message the operating system puts on the screen about doing something improper again.) Pull the power plug from the wall to quickly shut down the computer.

In the living room, the user inserts the USB stick into the slot on the TV. The TV complains about some pictures bring broken or unreadable. The user has to manually skip over broken photos with names like ".Trashes", ".Spotlight-V100" and a lot of them named "._IMGXXX.JPG"

After scrolling over dozens of broken photos there are finally some proper photos and the user can relax. But isn't modern technology difficult!

Photos on a digital picture frame

The user has a digital picture frame. It is a nice and modern way to enjoy the digital photos. Apparently it also requires photos on a USB stick. Lucky user, he already has a lot of photos on the USB stick from the previous day. (And there is always the "family IT guy" he can call.)

The user sticks the USB stick on the side of the frame and finally something works as it should! The frame begins showing the photos on a never-ending slideshow. And it was so easy to use.

After a while, however, the user begins to be irritated by the big blinking led at the top of the USB stick. It is kind of distracting.

A call to the "family IT guy." He tells the user he should manipulate some buttons on the frame and copy the photos from the stick to the frame's internal memory and then unplug the USB stick.

The user has no idea how to do that and because the family IT guy cannot connect remotely to the picture frame, he cannot help either. The user pulls the plug of the digital picture frame and throws it into the waste bin. He shoots some piccies on his digital camera, connects it to his printer, gets some nice color prints and hangs them on the wall.

Good discussion on sustainable living

How consumerism is killing us all and what can be done about it

http://ax.itunes.apple.com/fi/podcast/exploration-with-dr-michio/id353007502

-- Sami

Life, the universe and everything

Exploration With Dr. Michio Kaku:

http://ax.itunes.apple.com/fi/podcast/exploration-with-dr-michio/id353007502

-- Sami

A nice article on clojure Clojure

http://www.javaworld.com/javaworld/jw-05-2009/jw-05-clojure.html

Programmers of popular programming languages

Hmm... as some of you probably know, I collect exotic programming languages. This quote made me think:

If you program in the most popular programming language, your skill in that particular language is a commodity. If you program only in the most popular programming language, you have made yourself a commodity. A commodity can only compete on location and price, and location doesn't really get you much on the Internet. This means that only people with a poor understanding of economics program in PHP.

Lifted from http://gilesbowkett.blogspot.com/2009/01/why-hacker-news-thinks-php-won.html

What do you think?

How american health care works

Check out this podcast on iTunes:

http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=201671138

Thanks to Juha for recommending it to me. 

Come again?

From HP's customer service web site:

Note: You must have administrative privileges on your Mac computer to install the software. Click System Preferences, Accounts, and check Allow user to administer this computer.

Now let me get this straight: You should grant your account administrative access in order to install some software. But you need administrative access to grant administrative access, don't you, so why bother?

Learning XPath

Many of the Mac OS X command line utilities have a -plist option, which makes the utility do its thing in the "plist xml" format. I had the idea that maybe it would a good idea to use it and then use some of the xml tools to extract the information I want, instead of the usual pipeline of grep, awk and sed commands.

Specifically, I wanted to find out the mount point of a file system. I know the device file of the disk partition/slice.

I could try the mount command, but if the mount point directory has whitespace characters, parsing the output of the mount command is a bit fragile.

diskutil info is an OS X specific command that gives me what I want. After learning about XPath a bit, I came up with something like this:

diskutil info -plist /dev/disk0s2 | xpath "//string[preceding-sibling::key[1]='VolumeName']"

This is not yet perfect. The volume name is surrounded by <string> and </string> but I can live with that. The final insight for the XPath expression came from this post.

P.S. This post was written in Blogger's rich text editor in the Safari browser. This was the first time it worked well enough to be useful.

The best programming language, part 3

I wrote some time ago about my search for the best programming language. Now I have discovered a new language that meets a lot of the demands: Clojure.

Clojure is very much like Lisp. It runs on a Java VM. Java VMs are stable and either already installed on many platforms or easily available. All the objects you can import into Java are available for calling from Clojure. The Clojure programs can be deployed as .jar files and no-one needs to know you actually produced it with a high-level functional language.

Clojure also has good support for multi-threading and it does it with a new and interesting way by implementing software-transactional-memory, which apparently makes thread programming easier than using locks.

It is licensed under the Eclipse license. IANAL but it looks to me like it would be possible to use it for commercial software development without any major problems.

I'm still reading the documentation and I haven't written anything more complicated than a hello-world with it, but I'm liking what I see so far.