我创建了一个文本字段,其第一响应者是 datePicker。我还在视图上附加了一个工具栏,因此当点击文本字段时,工具栏会随着动画向上滑动。然后在工具栏上,他们是一个完成按钮,可以让第一响应者辞职。我也希望它删除工具栏。为此,我添加了这个
[pickerBar removeFromSuperview];
然后重新打开它我这样做了
[self.view addSubview:pickerBar];
因此,它在触摸 textview 时被激活。
问题是当我再次点击文本字段时,工具栏会失去导航。
这是大部分代码
pickerBar = [[UIToolbar alloc] init];
pickerBar.barStyle=UIBarStyleBlackOpaque;
[pickerBar sizeToFit];
if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone && [UIScreen mainScreen].bounds.size.height == 568.0) {
CGRect pickerBarRect = CGRectMake(0, 568, 320, 44);
[pickerBar setFrame:pickerBarRect];
} else {
CGRect pickerBarRect = CGRectMake(0, 480, 320, 44);
[pickerBar setFrame:pickerBarRect];
}
//Set up the new position of the frame of the view
NSMutableArray *barItems = [[NSMutableArray alloc] init];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
[barItems addObject:flexSpace];
UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(releasePicker)];
[barItems addObject:doneBtn];
[barItems addObject:doneBtn];
[pickerBar setItems:barItems animated:YES];
}
}
}
- (void)releasePicker {
[textfield resignFirstResponder];
[pickerBar removeFromSuperview];
}
- (void)pickerActivated {
[UIView animateWithDuration:.4 animations:^(void) {
[self.view addSubview:pickerBar];
if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone && [UIScreen mainScreen].bounds.size.height == 568.0){
CGRect rect = CGRectMake(0, 266, 320, 44);
[pickerBar setFrame:rect];
pickerBar.hidden = NO;
} else {
CGRect rect = CGRectMake(0, 178, 320, 44);
[pickerBar setFrame:rect];
}
}];
}