Xcode6.0 + create an empty application step:, xcode6.0empty

Xcode6.0 + create an empty application step:, xcode6.0empty

1. Select the Single View Application template.

2. Delete Main. storyboard and LaunchScreen. xib.

3. In Info. plist, delete the Launch screen interface file base name and Main storyboard file base name.

4. Click Use Asset Catalog in target. In the dialog box, click Migrate.

5. Add the code in the first method of AppDelegate:

 

OC:

(1) create a window

Self. window = [[UIWindow alloc] initWithFrame: [UIScreen mainScreen] bounds];

(2) set the window background

Self. window. backgroundColor = [UIColor whiteColor];

(3) make the window visible

[Self. window makeKeyAndVisible];

 

Swift

Self. window = UIWindow (frame: UIScreen. mainScreen (). bounds );

Self. window !. BackgroundColor = UIColor. whiteColor ();

Self. window !. MakeKeyAndVisible ();