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Heroku deployment error H10 (App crashed)

I have a RoR app working on my local computer, but when I send it to heroku, it crashes. The error log gives an error H10 & says: ...
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Application Loader stuck at “Authenticating with the iTunes store” when uploading an iOS app

We have been trying to submit an app to the iTunes store using Application Loader for three days and keep getting stuck at the "Authenticating with the iTunes store" step. We have read many forums (including stackoverflow) and tried what was suggested: ...
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xcode-select active developer directory error

... This problem happens when xcode-select developer directory was pointing to /Library/Developer/CommandLineTools, when a full regular Xcode was required (happens when CommandLineTools are installed after Xcode) Solution: Install Xcode (ge...
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How to detect first time app launch on an iPhone

... - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { if (![[NSUserDefaults standardUserDefaults] boolForKey:@"HasLaunchedOnce"]) { [[NSUserDefaults standardUse...
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GridLayout and Row/Column Span Woe

...lly, that was my fault, not converting the required android: attributes to app: ones, using the backport's XML namespace. It does work with the backport. – CommonsWare Aug 8 '12 at 23:44 ...
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Why not use always android:configChanges=“keyboardHidden|orientation”?

... Quick Background By default, when certain key configuration changes happen on Android (a common example is an orientation change), Android fully restarts the running Activity to help it adjust to such changes. When you define android:configChanges="keyboardHidden|orientation" in your AndroidM...
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Check if application is on its first run [duplicate]

I am new to android development and and I want to setup some of application's attributes based on Application first run after installation. Is there any way to find that the application is running for the first time and then to setup its first run attributes? ...
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Using ZXing to create an Android barcode scanning app [duplicate]

I've been searching for how to add a barcode scanner to my app. Are there any examples or how can I do this easily? 7 Answe...
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How do I associate file types with an iPhone application?

On the subject of associating your iPhone app with file types. 4 Answers 4 ...
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How to develop and test an app that sends emails (without filling someone's mailbox with test data)?

I have a lot of apps that send email. Sometimes it's one or two messages at a time. Sometimes it's thousands of messages. 9...