react-native-picker
[IOS] crash on react-native 0.77(new architecture)
Library version: 2.11.0 React native version: 0.77.2, new architecture enabled It occasionally crashes when using the selector:
Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x3c20 objc_msgSend + 32
1 UIKitCore 0x1103d3c -[UIPickerView hitTest:withEvent:] + 432
2 LeySerKids 0x6cbfa8 -[RCTViewComponentView betterHitTest:withEvent:] + 627 (RCTViewComponentView.mm:627)
3 LeySerKids 0x6cc0bc -[RCTViewComponentView hitTest:withEvent:] + 640 (RCTViewComponentView.mm:640)
4 LeySerKids 0x6cbfa8 -[RCTViewComponentView betterHitTest:withEvent:] + 627 (RCTViewComponentView.mm:627)
5 LeySerKids 0x6cc0bc -[RCTViewComponentView hitTest:withEvent:] + 640 (RCTViewComponentView.mm:640)
6 UIKitCore 0x7a3cc -[UIView(Geometry) _hitTest:withEvent:windowServerHitTestWindow:] + 84
7 UIKitCore 0x7a210 __38-[UIView(Geometry) hitTest:withEvent:]_block_invoke + 92
8 CoreFoundation 0x25430 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
9 CoreFoundation 0x8e4ac -[__NSSingleObjectArrayI enumerateObjectsWithOptions:usingBlock:] + 92
10 UIKitCore 0xda67c -[UIView(Geometry) hitTest:withEvent:] + 480
11 UIKitCore 0x7a3cc -[UIView(Geometry) _hitTest:withEvent:windowServerHitTestWindow:] + 84
12 UIKitCore 0x7a210 __38-[UIView(Geometry) hitTest:withEvent:]_block_invoke + 92
13 CoreFoundation 0x25430 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
14 CoreFoundation 0x8e4ac -[__NSSingleObjectArrayI enumerateObjectsWithOptions:usingBlock:] + 92
15 UIKitCore 0xda67c -[UIView(Geometry) hitTest:withEvent:] + 480
16 UIKitCore 0x1553260 -[UITransitionView hitTest:withEvent:] + 56
17 UIKitCore 0x7a3cc -[UIView(Geometry) _hitTest:withEvent:windowServerHitTestWindow:] + 84
18 UIKitCore 0x7a210 __38-[UIView(Geometry) hitTest:withEvent:]_block_invoke + 92
19 CoreFoundation 0x25430 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
20 CoreFoundation 0x25310 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 432
21 UIKitCore 0xda67c -[UIView(Geometry) hitTest:withEvent:] + 480
22 UIKitCore 0x7a3cc -[UIView(Geometry) _hitTest:withEvent:windowServerHitTestWindow:] + 84
23 UIKitCore 0x595f8 -[UIWindow _hitTestLocation:sceneLocationZ:inScene:withWindowServerHitTestWindow:event:] + 96
24 UIKitCore 0x593a4 __75+[UIWindow _hitTestToPoint:scenePointZ:forEvent:windowServerHitTestWindow:]_block_invoke + 68
25 UIKitCore 0x5870c __64-[UIWindowScene _topVisibleWindowEnumeratingAsCopy:passingTest:]_block_invoke + 116
26 UIKitCore 0x583f0 -[UIWindowScene _enumerateWindowsIncludingInternalWindows:onlyVisibleWindows:asCopy:stopped:withBlock:] + 312
27 UIKitCore 0x4bb9c -[UIWindowScene _topVisibleWindowEnumeratingAsCopy:passingTest:] + 416
28 UIKitCore 0x11bf28 +[UIWindow _hitTestToPoint:scenePointZ:forEvent:windowServerHitTestWindow:] + 220
29 UIKitCore 0x11bdfc -[UIWindow _targetWindowForPathIndex:atPoint:scenePointZ:forEvent:windowServerHitTestWindow:] + 188
30 UIKitCore 0x117e0c __startNewUITouch + 604
31 UIKitCore 0x11a4a20 ____updateTouchesWithDigitizerEventAndDetermineIfShouldSend_block_invoke.30 + 316
32 UIKitCore 0x1ad720 _UIEventHIDEnumerateChildren + 172
33 UIKitCore 0x1ac1bc __dispatchPreprocessedEventFromEventQueue + 2596
34 UIKitCore 0x1b5994 __processEventQueue + 5696
35 UIKitCore 0xadf40 updateCycleEntry + 160
36 UIKitCore 0xabcb8 _UIUpdateSequenceRun + 84
37 UIKitCore 0xab908 schedulerStepScheduledMainSection + 172
38 UIKitCore 0xac87c runloopSourceCallback + 92
39 CoreFoundation 0x57088 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
40 CoreFoundation 0x5701c __CFRunLoopDoSource0 + 176
41 CoreFoundation 0x54b08 __CFRunLoopDoSources0 + 244
42 CoreFoundation 0x53d04 __CFRunLoopRun + 840
43 CoreFoundation 0x535b8 CFRunLoopRunSpecific + 572
44 GraphicsServices 0x11c4 GSEventRunModal + 164
45 UIKitCore 0x3de2c0 -[UIApplication _run] + 816
46 UIKitCore 0x48cddc UIApplicationMain + 340
47 UIKitCore 0x7b9b20 block_destroy_helper.23 + 10212
48 LeySerKids 0x8ed4 main + 4375416532 (AppDelegate.swift:4375416532)
49 ??? 0x1b04a0d34 (缺少)
com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x1728 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x4e38 mach_msg2_internal + 80
2 libsystem_kernel.dylib 0x4d50 mach_msg_overwrite + 424
3 libsystem_kernel.dylib 0x4b9c mach_msg + 24
4 CoreFoundation 0x547cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x53e78 __CFRunLoopRun + 1212
6 CoreFoundation 0x535b8 CFRunLoopRunSpecific + 572
7 Foundation 0xb7000 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
8 Foundation 0xb6e50 -[NSRunLoop(NSRunLoop) runUntilDate:] + 64
9 UIKitCore 0x3f1714 -[UIEventFetcher threadMain] + 420
10 Foundation 0xc8158 __NSThread__start__ + 724
11 libsystem_pthread.dylib 0x637c _pthread_start + 136
12 libsystem_pthread.dylib 0x1494 thread_start + 8
Thread
0 libsystem_kernel.dylib 0x14b0 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x4cc8 _pthread_wqthread + 364
2 libsystem_pthread.dylib 0x1488 start_wqthread + 8
com.google.firebase.crashlytics.MachExceptionServer
0 LeySerKids 0x7283c FIRCLSProcessRecordAllThreads + 392 (FIRCLSProcess.c:392)
1 LeySerKids 0x72c1c FIRCLSProcessRecordAllThreads + 423 (FIRCLSProcess.c:423)
2 LeySerKids 0x6a954 FIRCLSHandler + 34 (FIRCLSHandler.m:34)
3 LeySerKids 0x6d2c8 FIRCLSMachExceptionServer + 525 (FIRCLSMachException.c:525)
4 libsystem_pthread.dylib 0x637c _pthread_start + 136
5 libsystem_pthread.dylib 0x1494 thread_start + 8
com.facebook.react.runtime.JavaScript
0 libsystem_kernel.dylib 0x1728 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x4e38 mach_msg2_internal + 80
2 libsystem_kernel.dylib 0x4d50 mach_msg_overwrite + 424
3 libsystem_kernel.dylib 0x4b9c mach_msg + 24
4 CoreFoundation 0x547cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x53e78 __CFRunLoopRun + 1212
6 CoreFoundation 0x535b8 CFRunLoopRunSpecific + 572
7 LeySerKids 0x9bc008 +[RCTJSThreadManager runRunLoop] + 102 (RCTJSThreadManager.mm:102)
8 Foundation 0xc8158 __NSThread__start__ + 724
9 libsystem_pthread.dylib 0x637c _pthread_start + 136
10 libsystem_pthread.dylib 0x1494 thread_start + 8
hades
0 libsystem_kernel.dylib 0x7030 __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x3a50 _pthread_cond_wait + 1204
2 libc++.1.dylib 0x21584 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 hermes 0xcc7fc hermes::vm::HadesGC::Executor::worker() + 116
4 hermes 0xcc764 void* std::__1::__thread_proxy[abi:v160006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, hermes::vm::HadesGC::Executor::Executor()::'lambda'()>>(void*) + 44
5 libsystem_pthread.dylib 0x637c _pthread_start + 136
6 libsystem_pthread.dylib 0x1494 thread_start + 8
com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x1728 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x4e38 mach_msg2_internal + 80
2 libsystem_kernel.dylib 0x4d50 mach_msg_overwrite + 424
3 libsystem_kernel.dylib 0x4b9c mach_msg + 24
4 CoreFoundation 0x547cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x53e78 __CFRunLoopRun + 1212
6 CoreFoundation 0x535b8 CFRunLoopRunSpecific + 572
7 CFNetwork 0xfdf44 +[__CFN_CoreSchedulingSetRunnable _run:] + 416
8 Foundation 0xc8158 __NSThread__start__ + 724
9 libsystem_pthread.dylib 0x637c _pthread_start + 136
10 libsystem_pthread.dylib 0x1494 thread_start + 8
Thread
0 libsystem_kernel.dylib 0x14b0 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x4cc8 _pthread_wqthread + 364
2 libsystem_pthread.dylib 0x1488 start_wqthread + 8
Thread
0 libsystem_pthread.dylib 0x1480 start_wqthread + 8892318846
Thread
0 libsystem_pthread.dylib 0x1480 start_wqthread + 8892318846
Thread
0 libsystem_pthread.dylib 0x1480 start_wqthread + 8892318846
Thread
0 libsystem_kernel.dylib 0x14b0 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x4cc8 _pthread_wqthread + 364
2 libsystem_pthread.dylib 0x1488 start_wqthread + 8
JavaScriptCore libpas scavenger
0 libsystem_kernel.dylib 0x7030 __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x3a50 _pthread_cond_wait + 1204
2 JavaScriptCore 0x15a3fe8 scavenger_thread_main + 1316
3 libsystem_pthread.dylib 0x637c _pthread_start + 136
4 libsystem_pthread.dylib 0x1494 thread_start + 8
AudioSession - RootQueue
0 libsystem_kernel.dylib 0x16bc semaphore_timedwait_trap + 8
1 libdispatch.dylib 0x46e8 _dispatch_sema4_timedwait + 64
2 libdispatch.dylib 0x4ce8 _dispatch_semaphore_wait_slow + 76
3 libdispatch.dylib 0x15b60 _dispatch_worker_thread + 324
4 libsystem_pthread.dylib 0x637c _pthread_start + 136
5 libsystem_pthread.dylib 0x1494 thread_start + 8
AudioSession - RootQueue
0 libsystem_kernel.dylib 0x16bc semaphore_timedwait_trap + 8
1 libdispatch.dylib 0x46e8 _dispatch_sema4_timedwait + 64
2 libdispatch.dylib 0x4ce8 _dispatch_semaphore_wait_slow + 76
3 libdispatch.dylib 0x15b60 _dispatch_worker_thread + 324
4 libsystem_pthread.dylib 0x637c _pthread_start + 136
5 libsystem_pthread.dylib 0x1494 thread_start + 8
It it related to this same issue: https://github.com/react-native-picker/picker/issues/519
@hollanderbart Did you found any solution for this issue. I am facing on this specifics. React Native 0.79.2 React-native-picker 2.11.0
I tried finding a solution, but because the crash happens between React Native's hitTest and the library it's hard to resolve it (for now).
In my case, I do
import { PickerIOS } from "@react-native-picker/picker";
And it looks no crash anymore.
Please this is critical, any fix for it?
@jingp-ofload is it the same as Picker? I’ll try that
I also saw this just today. Edit: I tried @jingp-ofload suggestion but it still fails, but with different error
Thread 1: EXC_BAD_ACCESS (code=1, address=0x20)
same as already mentioned issue #519
@Naturalclar Would you please want to look at the cause of these crashes on iOS?
We experience the same issue. Seems more noticeable with more items in the picker. Maybe @vonovak has an idea how to fix this? 🤗
@bobinrinder There are crashes with both Picker and PickerIOS, I suggest to move into a custom solution (it could be a flat list / legend list for more performance) until this is fixed.
on react native 0.80.0 also experiencing the crash. guess will have to use another picker
Similar issue with many items here --- crash report
Translated Report (Full Report Below)
Hardware Model: Mac15,3 Process: Expo Go [52377] Identifier: host.exp.Exponent Version: 2.33.13 (2.33.13) Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd_sim [27584] Coalition: com.apple.CoreSimulator.SimDevice.6E68DCE3-B4A2-4CB3-984E-5145CA665239 [242734] Responsible Process: SimulatorTrampoline [27451]
Date/Time: 2025-06-26 08:51:46.0213 -0500 Launch Time: 2025-06-26 08:27:07.4261 -0500 OS Version: macOS 15.4.1 (24E263) Release Type: User Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000010 Exception Codes: 0x0000000000000001, 0x0000000000000010 VM Region Info: 0x10 is not in any region. Bytes before following region: 4329095152 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START
Triggered by Thread: 0
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x18005f014 objc_msgSend + 20 1 UIKitCore 0x1855ec06c -[UITableView _updateVisibleCellsNow:] + 1112 2 UIKitCore 0x1855fc998 -[UITableView _visibleCellsUsingPresentationValues:] + 336 3 UIKitCore 0x1853b2298 -[UIPickerColumnView _allVisibleCells] + 48 4 UIKitCore 0x1853ba29c -[UIPickerView hitTest:withEvent:] + 244 5 Expo Go 0x1028a5270 -[RCTViewComponentView betterHitTest:withEvent:] + 496
I tried to solve the problem, but nothing works. https://github.com/quidone/react-native-wheel-picker is a good alternative. I've just test it, and replaced the picker by this package in my project.
Does anyone have a solution? This issue is currently causing the most crashes in the production environment of my app.
@deepindive Hi, You can use this package npm i @react-native-community/datetimepicker
https://www.npmjs.com/package/@react-native-community/datetimepicker
@huanguolin I have a some quetion. Did you put the picker inside the react-native-modal?
@huanguolin I have a some quetion. Did you put the picker inside the react-native-modal?
Ah, I’m using the modal from React Native.
@huanguolin Could you check your code for the Picker? I found some information, but I'm not sure about it. I heard that if you set the Picker's height to smaller than 216, it crashes. 216 is iOS Picker's Height.
Still having issues. Might need to switch libraries if there is no plan to fix this.
Same, I decided to uninstall and code our own picker, was causing too many issues.
clicking the picker row quickly and continuously can reproduce the crash, update the picker only when the props value changes, fixed it in my project!
RNCPickerComponentView.mm
- (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &)oldProps
{
const auto &newProps = static_cast<const RNCPickerProps &>(*props);
const auto &oldPickerProps = static_cast<const RNCPickerProps &>(*_props);
// 比较并更新 items
BOOL itemsChanged = NO;
if (newProps.items.size() != oldPickerProps.items.size()) {
itemsChanged = YES;
} else {
for (size_t i = 0; i < newProps.items.size(); i++) {
const auto &newItem = newProps.items[i];
const auto &oldItem = oldPickerProps.items[i];
if (newItem.label != oldItem.label ||
newItem.value != oldItem.value ||
newItem.textColor != oldItem.textColor ||
newItem.testID != oldItem.testID) {
itemsChanged = YES;
break;
}
}
}
if (itemsChanged) {
NSMutableArray *items = [NSMutableArray new];
for (RNCPickerItemsStruct item : newProps.items)
{
NSMutableDictionary *dictItem = [NSMutableDictionary new];
dictItem[@"value"] = RNCPickerConvertFollyDynamicToId(item.value);
dictItem[@"label"] = RNCPickerConvertFollyDynamicToId(item.label);
dictItem[@"textColor"] = RCTUIColorFromSharedColor(item.textColor);
dictItem[@"testID"] = RCTNSStringFromStringNilIfEmpty(item.testID);
[items addObject:dictItem];
}
picker.items = items;
}
// 比较并更新 selectedIndex
if (newProps.selectedIndex != picker.selectedIndex) { // 此处采用picker的selectedIndex比较，因为Native选中时会自动更新
picker.selectedIndex = newProps.selectedIndex;
}
// 比较并更新 color
if (newProps.color != oldPickerProps.color) {
picker.color = RCTUIColorFromSharedColor(newProps.color);
}
// 比较并更新 textAlign (基于 themeVariant)
NSString *newTextAlign = RCTNSStringFromStringNilIfEmpty(newProps.themeVariant);
NSString *oldTextAlign = RCTNSStringFromStringNilIfEmpty(oldPickerProps.themeVariant);
if (![newTextAlign isEqualToString:oldTextAlign]) {
if ([newTextAlign isEqualToString:@"auto"]){
picker.textAlign = NSTextAlignmentNatural;
} else if ([newTextAlign isEqualToString:@"left"]){
picker.textAlign = NSTextAlignmentLeft;
} else if ([newTextAlign isEqualToString:@"center"]){
picker.textAlign = NSTextAlignmentCenter;
} else if ([newTextAlign isEqualToString:@"right"]){
picker.textAlign = NSTextAlignmentRight;
} else if ([newTextAlign isEqualToString:@"justify"]){
picker.textAlign = NSTextAlignmentJustified;
}
}
// 比较并更新 numberOfLines
if (newProps.numberOfLines != picker.numberOfLines) { // 此处采用picker的numberOfLines比较
picker.numberOfLines = newProps.numberOfLines;
}
// 比较并更新字体相关属性
BOOL fontNeedsUpdate = NO;
if (newProps.fontFamily != oldPickerProps.fontFamily ||
newProps.fontSize != oldPickerProps.fontSize ||
newProps.fontWeight != oldPickerProps.fontWeight ||
newProps.fontStyle != oldPickerProps.fontStyle) {
fontNeedsUpdate = YES;
}
if (fontNeedsUpdate) {
picker.font = [RCTFont updateFont:picker.font
withFamily:RCTNSStringFromStringNilIfEmpty(newProps.fontFamily)
size:@(newProps.fontSize)
weight:RCTNSStringFromStringNilIfEmpty(newProps.fontWeight)
style:RCTNSStringFromStringNilIfEmpty(newProps.fontStyle)
variant:nil
scaleMultiplier:1];
}
// 比较并更新 themeVariant (用于 UserInterfaceStyle)
if (@available(iOS 13.4, *)) {
NSString *newThemeVariant = RCTNSStringFromStringNilIfEmpty(newProps.themeVariant);
NSString *oldThemeVariant = RCTNSStringFromStringNilIfEmpty(oldPickerProps.themeVariant);
if (![newThemeVariant isEqualToString:oldThemeVariant]) {
if (newThemeVariant) {
if ([newThemeVariant isEqual:@"dark"])
picker.overrideUserInterfaceStyle = UIUserInterfaceStyleDark;
else if ([newThemeVariant isEqual:@"light"])
picker.overrideUserInterfaceStyle = UIUserInterfaceStyleLight;
else
picker.overrideUserInterfaceStyle = UIUserInterfaceStyleUnspecified;
}
}
}
[super updateProps:props oldProps:oldProps];
}
clicking the picker row quickly and continuously can reproduce the crash, update the picker only when the props value changes, fixed it in my project!
RNCPickerComponentView.mm
- (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &)oldProps { const auto &newProps = static_cast<const RNCPickerProps &>(*props); const auto &oldPickerProps = static_cast<const RNCPickerProps &>(*_props); // 比较并更新 items BOOL itemsChanged = NO; if (newProps.items.size() != oldPickerProps.items.size()) { itemsChanged = YES; } else { for (size_t i = 0; i < newProps.items.size(); i++) { const auto &newItem = newProps.items[i]; const auto &oldItem = oldPickerProps.items[i]; if (newItem.label != oldItem.label || newItem.value != oldItem.value || newItem.textColor != oldItem.textColor || newItem.testID != oldItem.testID) { itemsChanged = YES; break; } } } if (itemsChanged) { NSMutableArray *items = [NSMutableArray new]; for (RNCPickerItemsStruct item : newProps.items) { NSMutableDictionary *dictItem = [NSMutableDictionary new]; dictItem[@"value"] = RNCPickerConvertFollyDynamicToId(item.value); dictItem[@"label"] = RNCPickerConvertFollyDynamicToId(item.label); dictItem[@"textColor"] = RCTUIColorFromSharedColor(item.textColor); dictItem[@"testID"] = RCTNSStringFromStringNilIfEmpty(item.testID); [items addObject:dictItem]; } picker.items = items; } // 比较并更新 selectedIndex if (newProps.selectedIndex != picker.selectedIndex) { // 此处采用picker的selectedIndex比较，因为Native选中时会自动更新 picker.selectedIndex = newProps.selectedIndex; } // 比较并更新 color if (newProps.color != oldPickerProps.color) { picker.color = RCTUIColorFromSharedColor(newProps.color); } // 比较并更新 textAlign (基于 themeVariant) NSString *newTextAlign = RCTNSStringFromStringNilIfEmpty(newProps.themeVariant); NSString *oldTextAlign = RCTNSStringFromStringNilIfEmpty(oldPickerProps.themeVariant); if (![newTextAlign isEqualToString:oldTextAlign]) { if ([newTextAlign isEqualToString:@"auto"]){ picker.textAlign = NSTextAlignmentNatural; } else if ([newTextAlign isEqualToString:@"left"]){ picker.textAlign = NSTextAlignmentLeft; } else if ([newTextAlign isEqualToString:@"center"]){ picker.textAlign = NSTextAlignmentCenter; } else if ([newTextAlign isEqualToString:@"right"]){ picker.textAlign = NSTextAlignmentRight; } else if ([newTextAlign isEqualToString:@"justify"]){ picker.textAlign = NSTextAlignmentJustified; } } // 比较并更新 numberOfLines if (newProps.numberOfLines != picker.numberOfLines) { // 此处采用picker的numberOfLines比较 picker.numberOfLines = newProps.numberOfLines; } // 比较并更新字体相关属性 BOOL fontNeedsUpdate = NO; if (newProps.fontFamily != oldPickerProps.fontFamily || newProps.fontSize != oldPickerProps.fontSize || newProps.fontWeight != oldPickerProps.fontWeight || newProps.fontStyle != oldPickerProps.fontStyle) { fontNeedsUpdate = YES; } if (fontNeedsUpdate) { picker.font = [RCTFont updateFont:picker.font withFamily:RCTNSStringFromStringNilIfEmpty(newProps.fontFamily) size:@(newProps.fontSize) weight:RCTNSStringFromStringNilIfEmpty(newProps.fontWeight) style:RCTNSStringFromStringNilIfEmpty(newProps.fontStyle) variant:nil scaleMultiplier:1]; } // 比较并更新 themeVariant (用于 UserInterfaceStyle) if (@available(iOS 13.4, *)) { NSString *newThemeVariant = RCTNSStringFromStringNilIfEmpty(newProps.themeVariant); NSString *oldThemeVariant = RCTNSStringFromStringNilIfEmpty(oldPickerProps.themeVariant); if (![newThemeVariant isEqualToString:oldThemeVariant]) { if (newThemeVariant) { if ([newThemeVariant isEqual:@"dark"]) picker.overrideUserInterfaceStyle = UIUserInterfaceStyleDark; else if ([newThemeVariant isEqual:@"light"]) picker.overrideUserInterfaceStyle = UIUserInterfaceStyleLight; else picker.overrideUserInterfaceStyle = UIUserInterfaceStyleUnspecified; } } } [super updateProps:props oldProps:oldProps]; }
you're right! I reproduced the crash clicking the picker row quickly and continuously. Your solution works. But if you have 2 picker on a screen and if unmount and mount the pickers the wheel will hide
shouldBeRecycled is a static method.
+ (BOOL)shouldBeRecycled
{
return NO;
}