Now that we can know how much activity I did yesterday, we can look at whether I am getting enough sleep.
A quick look at the Apple documentation lets us see that
HKCategoryTypeIdentifierSleepAnalysis is the right measure to be using. This is a subtype of
SampleType so we can use the querySampleType function.
As people who know me might know I have been playing around with various wearables for some years now, starting with a Nike Fuel Band, and also trying out products from Misfit and UP along the way. I have mostly just watched with interest as my exercise levels, and indeed sleep now we have a little one in the house, has gone up and down over time.
Mobile apps usually have the possibility to toggle the springboard by using an icon that is displayed in the header of the app. The Oracle MAF reference app, Work Better, also tries to implement this behavior. The showing of the springboard works fine, however, hiding it does not really work as expected. In this post I show you how to implement a working custom toggle springboard functionality.
Images are heavily used in Mobile apps. For instance a list that contains employees usually shows the images of these employees. This works well when you have a WIFI connection, but what if you are using slower connections ? If you look at a mobile twitter app you will see that, depending on connectivity, images are loaded instantaneously or delayed. In this post I explain how you can load the
Every now and then you look at some code and think that it cannot be possibly be wrong. Once you have ruled out a simple programmer screw up / enemy action in code (Make sure you read Java Puzzlers or similar) or a concurrency issue (Read Java Concurrency or go on Dr Heniz excellent course) you should sit back and take a few days and then starting thinking about whether the JDK is indeed out to get you. I haven't seen one in the wild in my 18 odd years as a Java programmer so it kinda took me by surprise.
A long while ago a optimisation was added to the JVM so that if the same exception is thrown again and again and again a single instance of the Exception is created without the stack trace filled in in order to increase performance. This is an excellent idea unless you are trying to diagnose a problem and you have missed the original error.
Two weeks ago I visited Oracle Open World in San Francisco. A glimpse of my activity during Oracle Open World can be found in this post. If you want to hear more, please visit the AMIS Oracle Open World Review Session at October 16th.
After a one hour delay at Amsterdam Schiphol Airport the airplane with, amongst others, several AMIS employees took of for San Francisco. There we met
It has been a while since my previous post, and I have a very good reason for that. I have been busy, very busy. But now, after a long time of writing and rewriting I can finally announce that my book, Oracle Mobile Application Framework Developer Guide, is available for you to buy. Many thanks to my reviewers Chris Muir, Frank Nimphius and Joe Huang who guided and helped me all the way.