PKHUD: Log show HUD not run in main thread

I test PKHUD in viewDidAppear

HUD.show(.labeledProgress(title: nil, subtitle: "loading..."))

still got Thread Error, but I’m sure HUD run in main thread!

opened :Main thread checker Xcode :Version 10.1 (10B61) iOS :12.1.1 Device :iPad 11"

=================================================================
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState]
PID: 841, TID: 208513, Thread name: com.apple.CoreMotion.MotionThread, Queue name: com.apple.root.default-qos.overcommit, QoS: 0
Backtrace:
4   libobjc.A.dylib                     0x00000001c487f894 <redacted> + 56
5   CoreMotion                          0x00000001cb105040 CoreMotion + 307264
6   CoreMotion                          0x00000001cb105574 CoreMotion + 308596
7   CoreMotion                          0x00000001cb105484 CoreMotion + 308356
8   CoreMotion                          0x00000001cb136c64 CoreMotion + 511076
9   CoreMotion                          0x00000001cb136cc4 CoreMotion + 511172
10  CoreFoundation                      0x00000001c56164fc <redacted> + 28
11  CoreFoundation                      0x00000001c5615de0 <redacted> + 276
12  CoreFoundation                      0x00000001c56110e4 <redacted> + 2324
13  CoreFoundation                      0x00000001c56104b8 CFRunLoopRunSpecific + 452
14  CoreFoundation                      0x00000001c561121c CFRunLoopRun + 84
15  CoreMotion                          0x00000001cb1365fc CoreMotion + 509436
16  libsystem_pthread.dylib             0x00000001c528b974 <redacted> + 132
17  libsystem_pthread.dylib             0x00000001c528b8d0 _pthread_start + 52
18  libsystem_pthread.dylib             0x00000001c5293ddc thread_start + 4
2019-01-15 00:24:32.721938+0800 MagicController[841:208513] [reports] Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState]
PID: 841, TID: 208513, Thread name: com.apple.CoreMotion.MotionThread, Queue name: com.apple.root.default-qos.overcommit, QoS: 0
Backtrace:
4   libobjc.A.dylib                     0x00000001c487f894 <redacted> + 56
5   CoreMotion                          0x00000001cb105040 CoreMotion + 307264
6   CoreMotion                          0x00000001cb105574 CoreMotion + 308596
7   CoreMotion                          0x00000001cb105484 CoreMotion + 308356
8   CoreMotion                          0x00000001cb136c64 CoreMotion + 511076
9   CoreMotion                          0x00000001cb136cc4 CoreMotion + 511172
10  CoreFoundation                      0x00000001c56164fc <redacted> + 28
11  CoreFoundation                      0x00000001c5615de0 <redacted> + 276
12  CoreFoundation                      0x00000001c56110e4 <redacted> + 2324
13  CoreFoundation                      0x00000001c56104b8 CFRunLoopRunSpecific + 452
14  CoreFoundation                      0x00000001c561121c CFRunLoopRun + 84
15  CoreMotion                          0x00000001cb1365fc CoreMotion + 509436
16  libsystem_pthread.dylib             0x00000001c528b974 <redacted> + 132
17  libsystem_pthread.dylib             0x00000001c528b8d0 _pthread_start + 52
18  libsystem_pthread.dylib             0x00000001c5293ddc thread_start + 4
2019-01-15 00:24:32.925872+0800 MagicController[841:208454] [framework] CUIThemeStore: No theme registered with id=0

About this issue

Original URL
State: open
Created 5 years ago
Reactions: 12
Comments: 17 (3 by maintainers)

Commits related to this issue

temporary HUD hack to fix `Main Thread Checker` error * see pkluz/PKHUD#245 (with my comment) * see pkluz/PKHUD#251 - which documents an attempted fix in pull request pkluz/PKHUD/#252 * see another at... — committed to Moletest-Scotland/PKHUD by NickAger 5 years ago

Most upvoted comments

I just found a solution / workaround for this, see my PR https://github.com/pkluz/PKHUD/pull/252

stefanrenne on May 13, 2019

simulator is OK, device show this warning, find someone have same issue on iPhone Xs iPhone X

whlsxl on Jan 14, 2019

PKHUD : Version 5.3.0 Xcode :Version 10.2.1 (10E1001) iOS : 12.2 Device : iPhoneXs

It has not been cured yet

tomokisun on Jun 12, 2019

Checked: Only happened when debugging. Run without debugger or run release is fine (Not cause freezes main thread)

tandinhlee on Apr 23, 2019

Same issue, weirdly the freeze happens only after the HUD is being shown for the first time per the app’s instance. Next calls, and calls made after a restart are not blocking.

Malibris on Apr 4, 2019

Running Xcode 10.2 with Swift 5. This warning is now causing main thread freezes.

evandorn on Apr 1, 2019

A temporary fix is to remove/comment-out UIInterpolatingMotionEffect from FrameView.commonInit as:

    private func commonInit() {
        backgroundColor = UIColor(white: 0.8, alpha: 0.36)
        layer.cornerRadius = 9.0
        layer.masksToBounds = true

        contentView.addSubview(content)

//        let offset = 20.0
//
//        let motionEffectsX = UIInterpolatingMotionEffect(keyPath: "center.x", type: .tiltAlongHorizontalAxis)
//        motionEffectsX.maximumRelativeValue = offset
//        motionEffectsX.minimumRelativeValue = -offset
//
//        let motionEffectsY = UIInterpolatingMotionEffect(keyPath: "center.y", type: .tiltAlongVerticalAxis)
//        motionEffectsY.maximumRelativeValue = offset
//        motionEffectsY.minimumRelativeValue = -offset
//
//        let group = UIMotionEffectGroup()
//        group.motionEffects = [motionEffectsX, motionEffectsY]
//
//        addMotionEffect(group)
    }

NickAger on Aug 13, 2019

Does anyone know if there is a temporary workaround for this?

sushant-here on Apr 24, 2019

Same issue on iPhone XR

evandorn on Feb 1, 2019