// let’s save our image as a JPG NSData *imageData = UIImageJPEGRepresentation(chosenImage, 1); // get our home directory and add the save path and file name NSString *imagePath = [NSHomeDirectory() stringByAppendingPathComponent:@”Documents/myImage.jpg”]; // then write the file to disk [imageData writeToFile:imagePath atomically:YES];
Say you had two NSString objects, firstString and secondString and you’d like to combine them into a new string called comboString. You can use the convenience method stringWithFormat for this: NSString *comboString = [[NSString alloc]initWithFormat:@”First %@ and second %@”, firstString, secondString]; Any variable is passed at the end of the string, replacing each %@ symbol.
In order for the PhoneGap Build service to sign your app correctly “in the cloud” it needs both your Provisioning Profile and your Developer Profile. As long as you can run apps from Xcode on your devices you have them both. For PhoneGap Build to utilise them you need to export them both via Keychain […]
Once you’ve downloaded the latest version from http://phonegap.com, unZIP it and copy the resulting folder to a safe directory (i.e. don’t leave it in your Downloads folder… duh!) You’ll create a fully fledged Xcode project from the command line. Make sure you cd into the directory where the create script resides. Contrary to the “Getting […]
Apple have changed the UITableViewController template in iOS 6 a bit. Specifically, when you create a new UITableViewController class, it’s created using something like this (in the cellForRowAtIndexPath method): – (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @”Cell”; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath]; // Configure the cell… return cell; } When […]
Here’s what the title in a UINavigationBar looks like: You set it like this: self.navigationItem.title = @”My Title”;
This will bring up the UIActionSheet on iPhone devices from the bottom of the screen: // trigger a UIActionSheet UIActionSheet *myActionSheet; myActionSheet = [[UIActionSheet alloc]initWithTitle:@”My Title” delegate:self cancelButtonTitle:@”Cancel” destructiveButtonTitle:@”Cancel in Red” otherButtonTitles:@”Open in Safari”, nil]; myActionSheet.actionSheetStyle = UIActionSheetStyleAutomatic; [myActionSheet showInView:self.view]; You can add more buttons if you like by comma separating them. If you don’t […]
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 […]
