Summary of iOS development exception errors -- wait_fences: failed to receive reply: 10004003

If the error wait_fences: failed to receive reply: 10004003 occurs inexplicably during the use of uialertview, you forget to close the keyboard.

Uialertview pops up. If the keyboard is not closed, the focus will be lost. When uialertview is closed and then returned to the original interface, it will be embarrassed to receive

Wait_fences: failed to receive reply: 10004003

Bytes Solution

It's easy to close the keyboard before the dialog box pops up.

[Self. textfield resignfirstresponder];