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问题:

Today, my builds suddenly started taking a long time to install & launch on my iPad (using XCode 7). During the "Performing Install Actions" phase, it hangs for about a minute, and then when the launch screen shows on the device, it takes about another minute for the app to launch. After the app launches, it runs normally without any issues.

I've restarted Xcode, cleaned the app, deleted build folders, deleted DerivedData, restarted OSX, restarted iOS, deleted the app from my iPad, and even upgraded iOS on the iPad to 9.0.2.

Edit: This issue originally seemed to be specific to the iPad Mini 3 I was using; it didn't happen on the iPhones I'm testing with. Now, after the weekend, it's happening on an iOS 8.4 iPhone 5s that I'm also developing on.

Edit 2: This was happening sporadically yesterday and it now seems to have cleared itself up, on all my devices. Still no idea what steps to take to fix this if it happens, though.

Edit 3: It continues to happen, but much more rarely.

回答1:

I've been dealing with this same thing, but connecting the phone to WiFi seems to unblock my installs. Who knows why... but give that a shot if you're still running into this issue.

回答2:

I recently ran into this problem and resolved it by restarting the device. I have no idea of what the cause is so I am reticent to suggest this is a universal solution but it did work for me once in a row.

回答3:

Fix : Turn off iPhone wifi. restart it and install the app now. Now you turn on the wifi. and it works. Fixed.

回答4:

I had a similar problem, but for me the app wouldn't launch at all. This might have been happening because I was connected to a WiFi that didn't have internet access. Changing to a WiFi with internet access solved the problem for me. It started happening suddenly for me as well, so not sure what triggers it. I've now changed back to the WiFi without internet access, and it seems to work again.

回答5:

I met this problem in Company, but not at home, when debugging on device. So if you are working under a company WIFI, just Changing WiFi to Internet Access will solve the problem.