iphone模拟器只显示背景图片而不是标签和文本框，为什么会这样？

Question

This is a simple iOS mobile app exercise. I have a image as a background, and then the labels and text box are added. I run the simulator and it shows correctly. but after a while I run the simulator again, the simulator only shows the background image, the text box and labels are not there anymore. I restart writing everything many time and the same thing happen at some point. This is driving me crazy. Did anyone know what is going on here??? Thank you so much in advance for your help!!!

Answer 1

if you done with story board than your object must be in right order.

Right/Proper Way

Wrong Way

Answer 2

I supposed you drag all button , label , text box objects in the storyboard . All the thing are supposed to disappear if you do not used any Layout stuff. Please try AutoLayout .

Or if you write the code to show your label in viewDidLoad() , please add the objects to your subview as self.view.addSubview(yourObjects) .