iOS模拟器无法在Xcode 6.3中使用

Question

I am trying to build an app, but I can't test my app because iOS Simulator isn't working.

When I try to run iOS Simulator, it don't even get a black iPhone screen, the whole iOS Simulator window is black. I can't get it to show anything. This makes coding an app extremely difficult, especially for a beginner like me.

Does anyone have any ideas as to why this might happen? The main interface is set to main.storyboard, and I don't get any errors when I try to run iOS Simulator, it just shows a black screen. Also, when I try to stop it I have to use Cmd+Q because the stop button doesn't work.

Are these two related, and can anyone fix it?

Screenshot of the problem:

http://hostthenpost.com/uploads/4d2e2cb62d6f03a7f330affc90276f3b.png

Computer specs: Mac Mini (Late 2014) running OS X Yosemite 10.10.3 and Xcode 6.3.

Answer 1

I had to quit Xcode and relaunch it after upgrading to 6.3 before my simulator would work. Also make sure you quit the simulator. The old Xcode 6.2 simulator is likely not compatible with 6.3

Answer 2

I figured it out! I just have to wait a thousand years for it to load, and then it works fine.

Answer 3

尝试重新启动Mac，然后尝试运行模拟器。

Answer 4

重新启动Mac可以帮助我解决此问题。

Answer 5

I know the above (or below) solutions all probably work, but I found a way to fix the issue that might be a little faster than restarting Xcode, your Mac, or waiting somewhere between 600-1000 years:

If you change the scale size of the iPad ( Window > Scale ) it seems to fix the issue.