How to convert an iPhone storyboard into an iPad storyboard:
Also see this answer — to convert an iPhone storyboard to an iPad storyboard, do the following:
The storyboard will now show all views in the correct size.
Rename the YourAppName-Prefix.pch file in Targets → Build Settings:
You need to click on the scheme button, then hit “Manage Schemes”. Once you do so, you’ll have a window like this:
Select the scheme you want to change, and hit Return.
Now the scheme name will be editable, and you can change it to your hearts desire. Then hit Return again to save it.
Declare the UIAlertView delegate in the yourViewController.h:
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<UIAlertViewDelegate> |
Create the alertView:
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UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Here is my alert title." message: @"Here is my alert message." delegate: self cancelButtonTitle: @"Cancel" otherButtonTitles: @"OK", nil]; [alert show]; |
Detect which alertView button was tapped:
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if (buttonIndex==0) { // button 0 tapped NSLog(@"Cancel %d", buttonIndex); }else if (buttonIndex==1){ // button 1 tapped NSLog(@"OK %d", buttonIndex); } |
I can never remember how to handle retina display images versus non-retina display images in the toolbar so here’s a reminder:
Add the 2 files to your project:
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image.png image@2x.png |
Then call it the same way on all screen densities:
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[UIImage imageNamed:@"image.png"]; |
UIImage will determine the right one to use. If using Interface Builder, point to the image.png and not the @2x image.
Add an activity indicator as shown here:
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UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0, 0, 20, 20)]; UIBarButtonItem * barButton = [[UIBarButtonItem alloc] initWithCustomView:activityIndicator]; // Set to Left or Right [[self navigationItem] setRightBarButtonItem:barButton]; [barButton release]; [activityIndicator startAnimating]; |
Remove the spinner and stop animating:
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[[self navigationItem] setLRightBarButtonItem:nil]; [activityIndicator stopAnimating]; |