问题描述
我使用的是react-native 0.62.2版本和datetimepicker版本3.0.1.当我尝试使用xcode构建项目时,显示以下错误:
I am using react-native 0.62.2 version and datetimepicker version 3.0.1. As I am trying to build the project with xcode, the following errors are being shown:
- 使用未声明的标识符'UIDatePickerStyleCompact'
- 使用未声明的标识符'UIDatePickerStyleWheels'
- 在类型的对象上找不到属性'preferredDatePickerStyle'"RNDateTimePicker *"
- 在类型的对象上找不到属性'preferredDatePickerStyle''UIDatePicker *'
- "NSInteger"(又名"long")到"id"的隐式转换是不允许使用ARC
- 声明需要整数类型的表达式('__strong id'无效)
- "UIDatePickerMode"(又名枚举")的隐式转换ARC不允许将UIDatePickerMode')更改为'id'
- 使用未声明的标识符'UIDatePickerStyleWheels'
以下是 RNDateTimePickerManager.h
#import "RNDateTimePickerManager.h"
#import <React/RCTBridge.h>
#import <React/RCTEventDispatcher.h>
#import "RNDateTimePicker.h"
#import <React/UIView+React.h>
@implementation RCTConvert(UIDatePicker)
RCT_ENUM_CONVERTER(UIDatePickerMode, (@{
@"time": @(UIDatePickerModeTime),
@"date": @(UIDatePickerModeDate),
@"datetime": @(UIDatePickerModeDateAndTime),
}), UIDatePickerModeTime, integerValue)
RCT_ENUM_CONVERTER(UIDatePickerStyle, (@{ //Error 5
@"default": @(UIActionSheetStyleAutomatic),
@"compact": @(UIDatePickerStyleCompact), //Error 1
@"spinner": @(UIDatePickerStyleWheels), //Error 2
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000
@"inline": @(UIDatePickerStyleInline),
#endif
}), UIActionSheetStyleAutomatic, integerValue)
@end
@implementation RNDateTimePickerManager
RCT_EXPORT_MODULE()
- (UIView *)view
{
return [RNDateTimePicker new];
}
+ (NSString*) datepickerStyleToString: (UIDatePickerStyle) style {
// RCTConvert does not handle this.?
switch (style) { //Error 6
case UIDatePickerStyleCompact:
return @"compact";
case UIDatePickerStyleWheels:
return @"spinner";
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000
case UIDatePickerStyleInline:
return @"inline";
#endif
default:
[NSException raise:@"Unsupported style value" format:@"UIDatePickerStyle of %ld is unsupported", (long)style];
return @"";
}
}
RCT_EXPORT_METHOD(getDefaultDisplayValue:(NSDictionary *)options resolver:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
{
dispatch_async(dispatch_get_main_queue(), ^{
UIDatePicker* view = [RNDateTimePicker new];
view.preferredDatePickerStyle = UIActionSheetStyleAutomatic; //Error 4
UIDatePickerMode renderedMode = [RCTConvert UIDatePickerMode:options[@"mode"]];
view.datePickerMode = renderedMode;
// NOTE afaict we do not need to measure the actual dimensions here, but if we do, just look at the original PR
UIDatePickerMode determinedDisplayValue = view.datePickerMode; //Error 7
resolve(@{
@"determinedDisplayValue": [RNDateTimePickerManager datepickerStyleToString:determinedDisplayValue],
});
});
}
RCT_EXPORT_VIEW_PROPERTY(date, NSDate)
RCT_EXPORT_VIEW_PROPERTY(locale, NSLocale)
RCT_EXPORT_VIEW_PROPERTY(minimumDate, NSDate)
RCT_EXPORT_VIEW_PROPERTY(maximumDate, NSDate)
RCT_EXPORT_VIEW_PROPERTY(minuteInterval, NSInteger)
RCT_EXPORT_VIEW_PROPERTY(onChange, RCTBubblingEventBlock)
RCT_REMAP_VIEW_PROPERTY(mode, datePickerMode, UIDatePickerMode)
RCT_REMAP_VIEW_PROPERTY(timeZoneOffsetInMinutes, timeZone, NSTimeZone)
RCT_CUSTOM_VIEW_PROPERTY(textColor, UIColor, RNDateTimePicker)
{
if (@available(iOS 14.0, *) && view.datePickerMode != UIDatePickerStyleWheels) { //Error 8
// prevents #247
return;
}
if (json) {
[view setValue:[RCTConvert UIColor:json] forKey:@"textColor"];
[view setValue:@(NO) forKey:@"highlightsToday"];
} else {
UIColor* defaultColor;
if (@available(iOS 13.0, *)) {
defaultColor = [UIColor labelColor];
} else {
defaultColor = [UIColor blackColor];
}
[view setValue:defaultColor forKey:@"textColor"];
[view setValue:@(YES) forKey:@"highlightsToday"];
}
}
// TODO vonovak setting preferredDatePickerStyle invalidates minuteinterval
RCT_CUSTOM_VIEW_PROPERTY(displayIOS, UIDatePickerStyle, RNDateTimePicker)
{
if (@available(iOS 13.4, *)) {
if (json) {
UIDatePickerMode propValue = [RCTConvert UIDatePickerStyle:json];
view.preferredDatePickerStyle = propValue; //Error 3
} else {
view.preferredDatePickerStyle = UIActionSheetStyleAutomatic;
}
}
}
@end
react-native datetimepicker中是否存在任何错误?
Is there any bug in the react-native datetimepicker?
推荐答案
对于仍然坚持此方法的人,尤其是使用此库.
For those who are still stuck on this, specifically using this library.
从3.0.3版本开始,它要求您的Xcode至少为v11,但他们从未提及v11.3不能正常工作,这已经被很多人注意到您至少需要v11.6.
Starting from version 3.0.3, it require that your Xcode is at least v11 but they never mention that v11.3 will not work which a lot of people already noticed that you will need at least v11.6.
请介意,降级可能对您没有帮助,因为您错过了解决许多错误的更新点,例如修复#217
Mind you, downgrading might not really help you either as you're missing the point of update which addresses a lot of bugs e.g #217 fix
这篇关于在"UIDatePicker"类型的对象上找不到属性"preferredDatePickerStyle"的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!