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I want to know that testing in real device and the instrument is same? only for producing crash. that means the crash which produced in device will be produced in instruments also?
Note: ARC enabled projects
99% crashes happenning on devices will also happen on simulators (ie can be instrumented), that is, as long as you have covered all possible combinations of iOS version and device type - iPhone / iPad, and with exception of features not supported by simulators: phone call, location tracking, motions etc.
Testing on devices however is strongly recommended, not because of 1% crashes, but because the experience of user with a device is very different from that with a simulator. Examples: a tiny button can easily be clicked with a mouse / trackpad, but might not be accessible with a finger; element sizes / colors might feel different on a real device...
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i have a mainpage which has 4 local images and it works fine on android 10 and i tested it on several phones but when installed it on my mom's phone which has android 7 on it one of the images on the mainpage won't load. i cant really understand why. can anybody help me?
Take care also about the resolutions of the device. I had a rendering problem of background images which I put in the default drawable folder (problems at the Samsung S7).
Try to adapt the properties of the image based on the device resolutions.
https://developer.android.com/training/multiscreen/screendensities
So test if its Android version or device resolution problem.
Check the console output of the Android device by the Output Window of Visual Studio or the Android Device Monitor. Maybe you get a hint there!
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How could I switch off primary Macbook screen?
I'm working with 2 External via Thunderbolt and HDMI on new Retina Macbook.
I want to switch off retina display and work just with external monitors without closing the cover of my laptop. Is there any setup option for that? I didn't find it under Preferences.
It seems to be possible to sleep display so by I/O Kit:
http://explanatorygap.net/2009/01/31/a-screensaver-to-send-your-display-to-sleep/
But I am not sure whether it can control single monitors.
you are searching for the 'clamshell' mode. the only way i get this to work is to wake my mac with external keyboard while the lid stays closed
see: http://support.apple.com/kb/ht3131
This worked like a charm on my old macbook (late 2008) with opening the lid again and the screen stays off until 'force' detecting it...
however, my retina display also wakes when in clamshell and then being opened.
There is a reason to this: Heat.
Aluminium macbooks can get really hot, especially since the vents are in the back and blowing the heat up in front of the opened display. Your retina macbook shuts itself down at about 110°C to 130°C, but please be careful.
EDIT
you can try different solutions posted here: http://www.cultofmac.com/176329/
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I've been debugging up to 4 devices at once recently for an iOS networking project with XCode 4. Having today updated to XCode 5 to be able to build to iOS7 devices, I've found that XCode will crash when ever I try to debug a second device simultaneously. The simulator seems to debug fine while one other device is debugging however.
The crash seems to be at the point where XCode tries to launch the app on the device. XCode immediately closes, and bring up the all too familiar 'Xcode quit unexpectedly' dialogue box. There doesn't appear to be anything all that helpful in the output other than the following.
ASSERTION FAILURE in /SourceCache/DVTFoundation/DVTFoundation-3532/Framework/Classes/FoundationClassCategories/DVTNSKeyValueObserving.m:427
Anyone have any clues if there's something I can do about this or do I just have to wait for an update to fix the problem?
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I am working on drawing app for windows phone 8.I want to capture video while I am drawing in screen is it possible? please give me any idea if u have, Actually it's possible in iOS I had worked on that but I was searching a lot in internet there is no help please let me give any idea how it will be possible.
Thanks
You could also use Expression Encoder 4 (http://www.microsoft.com/en-us/download/confirmation.aspx?id=27870) to screen capture the WP8 emulator and get a nice video out of it. You can define the screen area, clipping the emulator shell if you want.
Here is a couple of posts on how to do it:
http://blogs.msdn.com/b/mikeormond/archive/2010/09/27/windows-phone-7-screen-capture.aspx
http://richarddunbar.blogspot.co.uk/2013/01/a-cool-way-to-promote-your-app.html
Sadly nothing was released yet (at least nothing official).
Some stores offer a HDMI cable for Nokia Lumia 920, but as I heard, it is a scam. Some developers succeeded in this with a jailbroken device, but that is not really a good solution. Finally - you can certainly use the emulator and record the Window using some kind of screen capturing software, but that will sadly cause performance issues (the emulator causes some lagging of apps). That means either that, or wait until Microsoft solves this somehow...
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I need a portable Mac for iPhone / iPad development. I bought and am using a 15" MBP matte display right now. It cost $2400 and is hard on my eyes because the resolution is 1680 x 1050. I'm thinking of returning it and getting a different laptop, but which one? My usage pattern is that I see myself shuttling this computer to and from work while spending about 70% of my time developing with this connected to a monitor, etc. However, for that 30% of the time I want to comfortably be able to use emacs in a terminal and run XCode to compile changes to my iPhone application and try them out.
I find Xcode 3.2 is perfectly usable on a 13" macbook, with condensed mode and ungrouped editor Windows. However the iPad simulator doesn't fit on the screen. I would imagine that "bigger is better" might soon become the rule.
I cart around a 17" MacBook Pro, because IMHO it's the best compromise between screen real estate — of which you can never have enough — and portability, so I can go work at my local, very busy Starbucks and enjoy the lovely coffee-drinking scenery.
I fail to see how this is a programming question, but to keep it short - any newer MacBook/iMac/Mac Pro will be able to run XCode without bigger problems.
However, if your only concern is the screen size/resolution, you could get a MacBook/MBP and hook it up with your favorite LCD monitor.
Maybe changing the font size in XCode will help with the eye-strain?
See this question for more.