My App shows only a black screen on iPod

问题:

My app is in productions an works correctly in all devices except the iPod touch, which only shows a black screen when start the app. Does any body knows which could be the problem? The iPod touch is running with the 4.2.1 iOS version. Thnks

回答1:

As @ValentiGoClimb mentioned in the comment, Xcode has bad defaults when generating the Info.plist file; it only sets the Storyboard keys for iPads and iPhones, not iPod Touches.

<key>UIMainStoryboardFile~ipad</key>
<string>iPadStoryboardFileName</string>
<key>UIMainStoryboardFile~iphone</key>
<string>iPhoneStoryboardFileName</string>

I haven't found a good way to edit this under the General Project settings screen in Xcode (which is why this problem most likely exists), so adding the key manually in the Info.plist file works well.

<key>UIMainStoryboardFile</key>
<string>iPhoneStoryboardFileName</string>

回答2:

Your iPod is supposed to have the retina display.

so just try using [e-mail] .

And also please make sure to have this in resources.

回答3:

Try this -

1. Open your mainwindow's xib file
2. select window in xib file
3. in inspector window select first tab
4. check mark the "visible at launch"

回答4:

For me, I’m using XIB not Storyboard. But with Xcode 10 it’s set as “MainStoryBoard” as Main Interface in target setting.

So I have changed from “MainStoryBoard” to “MainWindow” and worked for me.