iOS - White screen when testing on iPad - iphone

I'm building an iPhone app, and it works fine when I test it in the simulator. I don't have an iPhone for testing, but my app is configured to be iPhone only, so I'm trying to run it in the iPad. When I run it either in the iPad simulator or the iPad itself all I get is a blank screen, any idea what could be happening?
My app use to be a Universal app, but I switched it to iPhone only to test on the iPad since I don't have an iPhone to test.

Check your build settings.
Change "Targeted Device Family" from "iPhone/iPad" to "iPhone" and you will see it in your small iPhone "simulator" on your iPad.
Check my screenshot:

Related

Iphone only app cuts of the bottom of the screen when viewed in Ipad mode (2x)

my app is very basic and looks great on the iphone but in compatability mode 2x on the ipad it does not show the same screen as on the iphone. it was built as an iphone only app and has no major graphs. this is what Apple told me. 2.10: iPhone apps must also run on iPad without modification, at iPhone resolution, and at 2X iPhone 3GS resolution
I've had the same behavior on a physical iPad 2 for an existing working iPhone-only app.
In fact, after adding for each Retina images (suffixed by #2x) a corresponding non-Retina version in the project, my app launched successfully on the iPad, without any modifications...
I'm not sure it will work for you, but might worth to try ?

Iphone resolution on an Ipad

We have an app that has been rejected in the review process by the Apple app review people. The cause for the rejection is that the app is not scaling properly when run on an Ipad.
The app was never meant to be run on an Ipad, but there seems to be no point in arguing with them about that.
Apple sent us a couple of screenshots that show our app being run on an Ipad with the top portion of the view cut off. Notice how the app is run in some mode where it looks like an Iphone app and does not fill out the entire display area. When we bring up the app on an Ipad, it fills out the screen and does so without any edges cut off.
Can anyone please tell me how to run the app on an Ipad the way the Apple guys have - Iphone-sized? We believe we have a fix for the issue but we need to reproduce the error and then be able to verify that the fix solves the issue.
(the logotypes in the images are intentionally blurred)
I just went through this myself and here is how I resolved it:
Go into info.plist and see if any of the supported interface orientations are set for iPad. Despite selecting iPhone only, I had iPad supported orientations for four (portrait, portrait upside down, landscape left, landscape right). I deleted those.
I also deleted any reference to the launch screen in the info.plist. My app is pretty simple and there's no preloading of data so I don't really need a launch screen. If you do, you could go old school and make your first VC the launch screen.
I then made these changes in Target-->General-->App Icons and Launch Images
That was the only way I could get it in the sim to run the app at iPhone resolution while running an iPad (iPad2, iPad Air).
If Apple is going to force developers to ensure an app runs on an iPad even if it is made just for iPhone, they should eliminate the iPhone Only and Universal options and just have iPad Only as an option.
To run an iPhone app on an iPad, you just need to:
Acquire an iPad (you can also use the simulator)
Set the target device family in Xcode (it's under your target) to iPhone
Connect your iPad, perform any necessary certificate dances
Run the app on the iPad.
As long as the target device family is set to iPhone, the iPad will show your app in this mode.
Apple is likely running your app on a simulator, not on a real device. Notice the "2X" on the top right. In XCode - you should run the app on iPad Retina Simulator. On the bottom right you will see a button that you can toggle from 1X to 2X.
If you place the simulator in "2X" mode, you will see what Apple is seeing.
What OS are you running on your iPad? Things have changed in iOS 8 - and that's likely why you're not seeing what Apple is seeing. My guess is that your are running an app that was initially developed for iOS 7 or earlier - which means that you need to upgrade from scaled resolution to native resolutions to resolve this issue. Here is how you do it:
How to enable native resolution for apps on iPhone 6 and 6 Plus?

change iphone project to work in both iphone and ipad

I already have an application which i have built for iphone only. I need to change it to work in both iphone and ipad.the upgrade to ipad application option in project tab of xcode is faded.. which I means I cant do that... I tried to run the project in ipad simulator but it gets automatically run in iphone simulator.
What are the proper steps to change my project to work in iphone and ipad.
Initially change the build setting,ie change the Targeted Device Family field to iPhone/iPad. To write logic for iPad use "UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad" this condition.

how can I run a iPad project on a iPhone or touch

I build a iPad project,i want to run the project on iPhone with auto-resize and it's run successful on iPhone 4.1 simulator,but it's always alert 'can only installed on ipads' when i run it with my iPhone,how can I run a iPad project on a iPhone or touch,what can i do?
You should set Targeted Device Family to iPhone/iPad in your project settings.Hope it works for you..
It doesnt make sense to install an iPad app in iPhone at all.
iPad has its own UI controls.You can install iPhone apps to iPad is just because iPad supports all the controls that iPhone has.
Reverse is not possible.

Setting Xcode's target to iPhone NOT iPad

I just upgraded to iPhone SDK 3.2 Beta 4. Since doing so, I have not been able to get the app to launch in the iPhone simulator - it keeps launching in the iPad simulator. I have tried option-clicking the drop-down menu in the top left-corner of Xcode and setting 'Active Executable' to iPhone simulator 3.1.3 but it keeps going back to iPad simulator instead.
What gives? I have no interest in my app running on the iPad and I don't want to test it in the 2X mode in the simulator.
Thanks,
You can't really launch an iPhone app in 3.2.x - sometimes it will pop up - but basically right now it is only for iPad development.
Update for release version of Simulator.
First of all, the title of this question doesn't match the description: Xcode target isn't the same as the simulator hardware device.
If you are writing an app targeting 3.2, it can run on both iPad (using OS 3.2) and lower OS versions on the iPhone. You do this by setting the Base SDK to iPhone Device 3.2, the Targeted Device Family to iPhone/iPad, and the iPhone OS Deployment Target to 3.1 (lower than 3.2).
The iPhone simulator has a menu option for Hardware->Device, which can be set to iPhone or iPad. However, you can only run a 3.2 SDK target in iPad mode, and a Universal app that supports iPad can only use the 3.2 SDK to build.
You can of course set the simulator to iPhone mode and launch your app from Springboard, but that will lose the debugger connection. Switching mode during installation of your app will cause it to crash.
So the short answer is still the same: you can't run a Universal iPad app in the iPhone mode simulator while debugging.
Upper-left corner of the IDE find a dropdown list of Simulator versions - flipped to 3.2 - try to put it back to 3.1.3
and relaunch your app.
This was driving me nuts too, but the answer is right here:
http://quatermain.tumblr.com/post/517122761/running-universal-ipad-iphone-apps-in-the-simulator
In short, tell Xcode to Build for the 3.2 SDK, then switch the build menu to the 3.1 SDK and tell Xcode to Run the app. Presto, the app starts in the iPhone simulator!
From Apple's documentation: "iPhone OS 3.2 does not support iPhone and iPod touch devices. It runs only on iPad." There's no way to target 3.2 for iPhone, so there's no Simulator. Ergo, you'll have to wait for iOS 4. Fortunately, that's only 4 days away now... of course it won't support the first generation of iPhone devices, but for all other iPhone users it's a free upgrade. Not sure about iPod Touches.
You should be able to change your target platform in your Project Settings.
Changing the target platform and device makes no difference. It always launches the iPad simulator.
If you switch the simulator to iPhone mode, the app just disappears.
This dev environment is a mess.
Short answer: You can change the hardware setting in the simulator. Hardware->Device
Go to Project
Set Active Executable
There are 2 options: Ipad Simulator 3.2 or Iphone Simulator 4.0.
If you choose the Iphone simulator, then it will launch Iphone simulator.
If you choose the Ipad simulator, then it will launch Ipad simulator.
I finally solved this problem myself.
First, install new version of xCode, which is xCode 4.
Then set project scheme to iphone simulator and run app in xCode several times.
And re-install xCode 3 and the problem will be gone away!