I needed the source of Anroid Froyo in order to be able to debug it in Eclipse. On the official download page there is a description how to download it under Linux (or cygwin) but at the time I did not had either so I tried to find plain, simple, good old zip that contains the entire source but it took me quite some time googling in order to find a site that provides such downloads. In order to save you from wasting time here it is:
If you need the source in order to debug it in Eclipse: download appropriate JAR (for example android-2.2_r1.1-sources.jar) , open it with zip and extract it in <android-sdk-dir>\platforms\<android-version>\sources (you may need to create "sources" subdir). Restart Eclipse and debug should work.
[EDIT] 2015-10-15: Now apache provides jar for android (currently 184.108.40.206). Also if you are targeting Android API 23 and newer you can use packages for Android maintained by Marek Sebera (currently 220.127.116.11).
[EDIT] This publication and method are old and deprecated. Please use http://code.google.com/p/httpclientandroidlib/ instead.
If you ended up here that is probably because you hit a bug in the built-in HttpClient library which is not just old, it is beta quality (httpclient-4.0-beta1.jar). Strangely enough there is no hope that Android team will update it soon (also this is impossible without breaking backward compatibility…).
Fear not, there is a remedy.
Sadly we cannot replace the build-in library nor just add newer version but we can "trick" the system and move the library in another namespace in order to avoid conflict with the built-in lib.
The quick solution: here is an zip file containing all the required files (JARs converted using "ogrelab-" namespace prefix). Jump directly to step 7 in the "thorough" solution bellow.
The thorough solution:
1. Download JarJar -- this is the tool which we will use to move the classes in new namespace
2. Download latest HttpClient, CommonsLogging and Log4j (you will need "binary" packages) and extract them somewhere
3. Create a temporary dir somewhere like tmp_httpclient for example find following Jars and copy them into the temp dir (versions may differ):
Please note: there are additional JARs especially in the HttpClient archive but I don't use them, so I've excluded them from the list. Depending on your situation you may need them at some point so you will have to "convert" them too.
Usually one of the biggest obstacles for the newcommers to android programming is the correct understanding of the activity's lifecycle, for example what is the difference in the event's chain when hitting "Back" button compared to activity being closed when phone is rotated. You cannot obtain this information by looking just at the activity lifecycle diagram in the API ref. In the following post I will use sample project that uses logging to demonstrate exactly what happens in the different cases. It is ment to be used as complementary tool for understanding how activities work.
Before proceeding you may want to download the sample project: Activity Lifecycle Demo. It contains simple logging of the activity and method name in each of the methods related to the lifecycle.
1. "Cold" start
Cold start is the case when the activity was a) started for the first time OR b) started after stopped with hitting "Back" button (the hardware one not <Button> that may exists in some activity's layout).
Logcat will show something like (timestamps will differ):
08-09 17:37:20.500: INFO/TEST(10107): A onCreate
08-09 17:37:20.507: INFO/TEST(10107): A onStart
08-09 17:37:20.507: INFO/TEST(10107): A onResume
Important to note here is that when
onCreate(Bundle savedInstanceState) is called
savedInstanceState is null. That is because there is no saved state because this is "cold" start (obviously).
2. Hitting "Back" button
08-09 17:50:19.050: INFO/TEST(10107): A onPause
08-09 17:50:19.433: INFO/TEST(10107): A onStop
08-09 17:50:19.433: INFO/TEST(10107): A onDestroy | isFinishing: true
Important to note here is
isFinishing: true which means that call to
isFinishing() in the
onDestroy() returns true, i.e. which happens when: … more / още »
Have you ever needed to popup a ContextMenu by longclicking on some of the UI element (different than item in ListView) for example an ImageView instance? At first glance it seems that this can be acomplished quite easy but in reality there is one big problem: you have only one
onContextItemSelected() method in your activity that is called every time a context menu item is selected no matter which View requested the
openContextMenu(). This situation is not a problem if just one
View is poping a
ContextMenu but sometimes you need to popup
ContextMenu from several different views. Let me show an example from a real app:
In this layout I have 4 ImageViews. img1 is called "primary" and all other "secondary". By specification I had to … more / още »
I am happy to announce release of version 2.3.1 of Tangra framwork for PHP. It contains mainly new versions of many modules, most noticable -- admin_panel and user_auth _basic which now use Blowfish encryptiion for passwords which improves security.
I had this problem: sites created with Tangra Framework needed long time to "boot" because there are more than 100 chained require_once()s. On my dev server it took between about 500 and 600 milliseconds to complete which sometimes was unacceptable. To make things even worst: when used on Windows machine with XAMPP pages needed about 1200 miliseconds to complete…
Since at least an year I had this idea: to create a "compiler" which compiles all require_once()s into one big fat file. My idea was to point the compiler to some php file which represents web page and to let it grab recursively all the required_once() files. As a result I needed a compiled version of the web page that does not contain single require_once().
Yesterday I finally decided to try to create such compiler and as of today I finally got what I desired. Comparing profiler data "before" and "after" shows 43% improvement of the compiled PHP web page (510 ms vs 290 ms) which is great. Resulting file was 12211 lines long (with about 30% empty lines). 244 calls to require_once() was eliminated.
You install brand new latest version of XAMPP on your Windows box, everything works, but PHP pages open very slow (>1 second).
Disable your antivirus software for few minutes, restart XAMPP and try again. If there is a significant improvement: the cause is your antivirus software (AV programs usually scan for viruses each accessed file which slows the apache).
If you are using Bitdefender here are the steps to configure it in a way suitable for usage of XAMPP:
- Simple solution -- just switch bitdefender to
game mode when working with xampp
- "Advanced" solution -- go to
Antivirus -> Shield -> Advanced Settings -> Exclusions Tab and there add exclusion for httpd.exe (located in your xampp installation/apache/bin/). Then go to
Antivirus -> Exclusions and add exclusion for the directory where your php files reside.
Don't forget to restart apache after above steps.
Вчера мисля, че успях да ликвидирам и последния бъг в новата версия на Моето Тото 2 и тя беше публикувана в андроид маркета. Новите неща включват:
- възможност за записване на генерираните комбинации;
- възможност за въвеждане и записване на собствени комбинации (чрез доста удобен интерфейс IMNSHO :-) )
Връзки за сваляне:
Moeto Toto 2
За версия 3.0 очаквайте функционалност за сваляне на числата от тиражите по интернет + автоматична проверка за печалби.
On several occasions I had to create simple buttons that use different background color than the default gray. I've tried to google for already cooked solution but quite surprisingly -- I was unable to find one that suits me so I had to create solution by my self (not really, I just combined other solutions in one easy to use packaged solution).
There are three approaches:
1. First approach (bad) -- just set the background to some color like this
a) button does not have rounded edges (and does not fit in the look & feel, i.e. looks alien)
b) does not support changes of the color to indicate focus or pressed state.
2. Second approach (not very good) -- create custom drawable definitions in xml file that use gradients (<gradient>). The problem is that buttons don't look quite the same as default buttons -- edges are not quite with the same roundness, margins and paddings are different. When I first tried to create colored buttons I've tried this approach but after 2-3 hours playing with paddings and roundess I finally gived up.
3. Third approach (the right(eous) one) -- Use different 9-patch images for the different colors.
It works very simple: … more / още »
В деня на шегата 01.04. излезе версия 2.3.0 на Tangra framework. На следващия ден се изкачи то позиция 161 в класацията на проектите в sourceforge. Предишния най-добър резултат беше ~363. По важното е, че напоследък стабилно се задържа в top2000.