更新到iOS8后,cordova datepicker插件无法正常工作。它崩溃了以下消息:
由于未捕获的异常终止应用程序' NSInternalInconsistencyException',原因:' UITableView数据源未设置'
但是我没有在插件源代码中看到任何与UITableView相关的代码。我不知道,也许UIDatePicker中有一个内部UITableView?
这是代码(我删除了一些非相关代码以便于阅读):
- (UIPopoverController *)createPopover:(NSMutableDictionary *)options {
UIView *datePickerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, pickerViewWidth, pickerViewHeight)];
if(!self.datePicker){
self.datePicker = [self createDatePicker:options frame:frame];
[self.datePicker addTarget:self action:@selector(dateChangedAction:) forControlEvents:UIControlEventValueChanged];
}
NSDateFormatter *formatter = [self createISODateFormatter:@"yyyy-MM-dd'T'HH:mm:ss'Z'" timezone:[NSTimeZone defaultTimeZone]];
NSString *dateString = [options objectForKey:@"date"];
self.datePicker.date = [formatter dateFromString:dateString];// if remove this line, it works fine
[datePickerView addSubview:self.datePicker];
UIViewController *datePickerViewController = [[UIViewController alloc]init];
datePickerViewController.view = datePickerView;
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:datePickerViewController];
popover.delegate = self;
[popover setPopoverContentSize:CGSizeMake(pickerViewWidth, pickerViewHeight) animated:NO];
[popover presentPopoverFromRect:anchor inView:self.webView.superview permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
return popover;
}
这一行:
self.datePicker.date = [formatter dateFromString:dateString];
最终导致崩溃,并且通过调试,我发现dateString的值是:
2014-10-17T10:0:00Z
2014-10-17T20:0:00Z
它从第二次显示崩溃,第一次总是好的
你能告诉我一些线索吗?感谢答案 0 :(得分:5)
最后我发现了这个问题:
cordova DatePicker的源代码,重用UIDatePicker实例:
if(!self.datePicker){
self.datePicker = [self createDatePicker];
[self.datePicker addTarget];
}
并且,它在iOS7中运行良好,但会导致iOS8崩溃。
在iOS8中,不要在多UIView中共享UIDatePicker实例,所以我将代码修改为:// in iOS8, UIDatePicker couldn't be shared in multi UIViews, it will cause crash. so create new UIDatePicker instance every time
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
self.datePicker = [self createDatePicker:options frame:frame];
[self.datePicker addTarget:self action:@selector(dateChangedAction:) forControlEvents:UIControlEventValueChanged];
}else{
if(!self.datePicker){
self.datePicker = [self createDatePicker:options frame:frame];
[self.datePicker addTarget:self action:@selector(dateChangedAction:) forControlEvents:UIControlEventValueChanged];
}
}
希望这可以帮助像我这样的人