iphone - 如何使用 UIPickerView

Question

我一直在使用UIPickerView，同时显示UIPickerView我是否需要在同一视图中隐藏所有其他控件，因为我遇到了这样的问题。请看图片

后面的按钮显示前面。如何避免这个问题。任何想法？

Answer 1

[self.view bringSubviewToFront:yourPickerView];

Answer 2

嗨，我认为您必须为选择器视图设置框架。下面的代码是针对 uipickerview 的，请随意修改。

-(IBAction)pickButtonpressed:(id)sender

{

UIActionSheet *asheet = [[UIActionSheet alloc] initWithTitle:@"Select Distance" delegate:self cancelButtonTitle:@"Cancel" 破坏性ButtonTitle:nil otherButtonTitles:@"Select", nil];

[asheet setTag:200];

UIPickerView *statePicker = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 40, 0, 0)];

statePicker.delegate=self;

statePicker.showsSelectionIndicator = YES;

[statePicker setTag:11];

[asheet addSubview:statePicker];

[asheet showInView:[self.view superview]]; //note: in most cases this would be just self.view, but because I was doing this in a tabBar Application, I use the superview.

[asheet setBounds:CGRectMake(0,0,320, 700)];

[asheet setFrame:CGRectMake(0, 117, 320, 383)];

NSArray *subviews = [asheet subviews];

[[subviews objectAtIndex:1] setFrame:CGRectMake(20, 266, 280, 46)]; 

[[subviews objectAtIndex:2] setFrame:CGRectMake(20, 317, 280, 46)];

}