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How to change a cell’s selection colour

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By default, when you touch a cell in a UITableView, it lights up bright blue. You can use this property to change the cell’s selection style in the cellForRowAtIndexPath method: cell.selectionStyle = UITableViewCellSelectionStyleGray; Possible values are UITableViewCellSelectionStyleGray UITableViewCellSelectionStyleBlue (the default) UITableViewCellSelectionStyleNone Alternatively you can select the cell in Interface Builder and pick these values from […]

How to open a URL in Safari programmatically

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Instead of loading a URL into a UIWebView we can also launch Safari to display it: UIApplication *mySafari = [UIApplication sharedApplication]; NSURL *myURL = [[NSURL alloc]initWithString:@”http://www.mydomain.com”; [mySafari openURL:myURL]; The method returns a BOOL value which will feed back if this operation was a success or not: if (![mySafari openURL:myURL]) { // opening didn’t work } […]

How to use iCloud key value storage

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Storing small bits of info in iCloud is very similar to using the local NSUserDefaults device storage. The only difference is that your App ID needs to be enabled for iCloud in iTunes Connect and that you need to enable it in your project: Here’s how you save data to iCloud (from a text label): […]

How to restart Plesk on CentOS / RHEL / Linux

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I had always assumed that to restart Plesk, all that was necessary was the following command: service psa restart However, since Plesk is in charge of a multitude of services that’s not enough. Instead, we should be using service psa stopall service psa start Or if the service command isn’t working for you, you can … Read more

When Xcode 4.5 suddenly stops running your app on a device (could not launch app)

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I’ve had this problem that Xcode 4.5 would run my app fine in the simulator, but didn’t do so anymore on the device. Something about the “derived data folder was not found”. I checked, it was definitely there. Then I found this post on Stackoverflow to show some suggestions: http://stackoverflow.com/questions/11456312/xcode-suddenly-stopped-running-project-on-hardware-could-not-launch-xxx-app This solution worked for me […]

How to place an existing Xcode project under Version Control with Git (and ignore files you don’t want to track)

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Usually when you create a new Xcode Project you can choose to setup a new Git repository. This is the best and easiest way to track your changes. However if you have a project that is not under version control you can create a Git repository retrospectively. This is fairly straightforward using the Terminal app […]