Ios 为什么不是'；我的IBAction没有开火吗？
我有一个自定义类（FFFuelQuantityPickerVC）情节提要视图控制器，它包含一个UIPickerView和一个UIButton。UIButton连接到FFFuelQuantityPickerVC中名为fullButtonPressed的iAction。当使用故事板popover segue显示此视图控制器时，当UIButton“在内部触动”时，将触发fullButtonPressed iAction 但是，当我以编程方式初始化并在弹出窗口中显示FFFuelQuantityPickerVC时，按下UIButton不会触发iAction。为什么会这样？以下是在按下UITableViewCell中的按钮时执行编程演示的代码。（self.poc是一个可重用的popover控制器）： 以下是FFFuelQuantityPickerVC：Ios 为什么不是'；我的IBAction没有开火吗？,ios,ibaction,Ios,Ibaction,我有一个自定义类（FFFuelQuantityPickerVC）情节提要视图控制器，它包含一个UIPickerView和一个UIButton。UIButton连接到FFFuelQuantityPickerVC中名为fullButtonPressed的iAction。当使用故事板popover segue显示此视图控制器时，当UIButton“在内部触动”时，将触发fullButtonPressed iAction 但是，当我以编程方式初始化并在弹出窗口中显示FFFuelQuantityPicke
// FFFuelQuantityPickerVC.h
#import <UIKit/UIKit.h>
@protocol fuelPickerDelegate <NSObject>
-(void) fuelQuantityChangedL:(NSInteger) quantityL R:(NSInteger)quantityR;
@end
@interface FFFuelQuantityPickerVC : UIViewController <UIPickerViewDataSource, UIPickerViewDelegate>
@property (weak, nonatomic) IBOutlet UIPickerView *thisPicker;
@property (nonatomic) NSString *fuelQuantityL;
@property (nonatomic) NSString *fuelQuantityR;
@property (nonatomic) id delegate;
- (IBAction)fullButtonPressed; //this is wired to the button
@end
//
// FFFuelQuantityPickerVC.m
#import "FFFuelQuantityPickerVC.h"
#define FUEL_MIN 0
#define FUEL_MAX 146
#define LEFT_COMPONENT 0
#define RIGHT_COMPONENT 1
@interface FFFuelQuantityPickerVC ()
@end
@implementation FFFuelQuantityPickerVC
- (void)viewDidLoad
{
[super viewDidLoad];
if (!self.fuelQuantityL){
self.fuelQuantityL = [NSString stringWithFormat:@"%i", FUEL_MAX];
}
if (!self.fuelQuantityR){
self.fuelQuantityR = [NSString stringWithFormat:@"%i", FUEL_MAX];
}
}
//set selected row to current values, if any
- (void) viewDidAppear:(BOOL)animated {
[self.thisPicker selectRow:FUEL_MAX - [self.fuelQuantityL intValue] inComponent:LEFT_COMPONENT animated:YES];
[self.thisPicker selectRow:FUEL_MAX - [self.fuelQuantityR intValue] inComponent:RIGHT_COMPONENT animated:YES];
}
//this method does not get called when the button is pressed (except when the VC is presented via storyboard popover segue)
- (IBAction)fullButtonPressed {
self.fuelQuantityL = [NSString stringWithFormat:@"%i", FUEL_MAX];
self.fuelQuantityR = [NSString stringWithFormat:@"%i", FUEL_MAX];
[self.thisPicker selectRow:0 inComponent:0 animated:YES];
[self.thisPicker selectRow:0 inComponent:1 animated:YES];
[self.delegate fuelQuantityChangedL:[self.fuelQuantityL integerValue]
R:[self.fuelQuantityR integerValue]];
}
#pragma mark - PickerViewDataSource delegate methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return 2;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
return (FUEL_MAX-FUEL_MIN + 1);
}
#pragma mark - PickerView delegate methods
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component{
float myWidth = self.view.frame.size.width;
if (component == 0) return myWidth / 3;
return (myWidth * 2 / 3);
}
- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component {
//TODO
return 28;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [NSString stringWithFormat:@"%d", (FUEL_MAX)-row];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
if (component == LEFT_COMPONENT){
self.fuelQuantityL = [NSString stringWithFormat:@"%i", FUEL_MAX - row];
} else {
self.fuelQuantityR = [NSString stringWithFormat:@"%i", FUEL_MAX - row];
}
[self.delegate fuelQuantityChangedL:[self.fuelQuantityL integerValue]
R:[self.fuelQuantityR integerValue]];
}
@end
//FFFuelQuantityPickerVC.h
#进口
@协议选择器delegate
-（无效）燃料数量更改DL：（NSInteger）数量L R：（NSInteger）数量R；
@结束
@接口FFFuelQuantityPickerVC:UIViewController
@属性（弱、非原子）IBUIPickerView*此选择器；
@属性（非原子）NSString*fuelQuantityL；
@属性（非原子）NSString*fuelQuantityR；
@属性（非原子）id委托；
-（iAction）按下完整按钮//这是连接到按钮上的
@结束
//
//FFFuelQuantityPickerVC.m
#导入“FFFuelQuantityPickerVC.h”
#定义燃油最小值0
#定义最大燃油消耗量146
#定义左\u组件0
#定义组件1的右键
@接口FFFuelQuantityPickerVC（）
@结束
@FFFuelQuantityPickerVC的实现
-（无效）viewDidLoad
{
[超级视图下载]；
如果（！self.fuelQuantityL）{
self.fuelQuantityL=[NSString stringWithFormat:@“%i”，FUEL_MAX]；
}
如果（！self.fuelQuantityR）{
self.fuelQuantityR=[NSString stringWithFormat:@“%i”，FUEL_MAX]；
}
}
//将选定行设置为当前值（如果有）
-（无效）视图显示：（BOOL）动画{
[self.thisPicker selectRow:FUEL_MAX-[self.fuelQuantityL intValue]未组件：左组件动画：是]；
[self.thisPicker selectRow:FUEL_MAX-[self.fuelQuantityR intValue]未组件：右侧未设置组件动画：是]；
}
//按下按钮时不会调用此方法（除非VC通过情节提要popover segue显示）
-（iAction）FullButton按下{
self.fuelQuantityL=[NSString stringWithFormat:@“%i”，FUEL_MAX]；
self.fuelQuantityR=[NSString stringWithFormat:@“%i”，FUEL_MAX]；
[self.thisPicker selectRow:0不完整：0动画：是]；
[self.thisPicker selectRow:0不完整：1动画：是]；
[self.delegate fuelQuantityChangedL:[self.fuelQuantityL integerValue]
R:[self.fuelQuantityR integerValue]]；
}
#pragma标记-PickerViewDataSource委托方法
-（NSInteger）pickerView中组件的编号：（UIPickerView*）pickerView{
返回2；
}
-（NSInteger）pickerView:（UIPickerView*）pickerView行数组件：（NSInteger）组件{
返回（燃油最大值-燃油最小值+1）；
}
#pragma标记-PickerView委托方法
-（CGFloat）pickerView:（UIPickerView*）元件的pickerView宽度：（NSInteger）元件{
float myWidth=self.view.frame.size.width；
如果（组件==0）返回myWidth/3；
返回（myWidth*2/3）；
}
-（CGFloat）pickerView:（UIPickerView*）pickerView rowHeightForComponent:（NSInteger）component{
//待办事项
返回28；
}
-（NSString*）pickerView:（UIPickerView*）pickerView标题箭头：（NSInteger）组件行：（NSInteger）组件{
返回[NSString stringWithFormat:@“%d”（燃料最大值）-行]；
}
-（void）pickerView:（UIPickerView*）pickerView didSelectRow:（NSInteger）row不完整项：（NSInteger）组件{
如果（组件==左组件）{
self.fuelQuantityL=[NSString stringWithFormat:@“%i”，FUEL_MAX-row]；
}否则{
self.fuelQuantityR=[NSString stringWithFormat:@“%i”，FUEL_MAX-row]；
}
[self.delegate fuelQuantityChangedL:[self.fuelQuantityL integerValue]
R:[self.fuelQuantityR integerValue]]；
}
@结束
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0)
{
if (indexPath.row == 1)
{
//PopoverView controller.........................................................................
UIViewController *popoverViewController = [[UIViewController alloc] init];
//PopoverView....................................................................................
UIView *popoverView = [[UIView alloc]init];
[popoverView setBackgroundColor:[UIColor blackColor]];
//Navigation bar and Barbutton items..............................................................
UINavigationBar *navBar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
navBar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *btnDone = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doDone)];
UIBarButtonItem *btnCancel = [[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStylePlain target:self action:@selector(doCancel)];
UINavigationItem *navItem = [[UINavigationItem alloc]init];
navItem.rightBarButtonItem = btnDone;
navItem.leftBarButtonItem = btnCancel;
navBar.items = [[NSArray alloc]initWithObjects:navItem, nil];
[popoverView addSubview:navBar];
//UIPickerView.....................................................................................
UIPickerView *sortPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 50, 320, 180)];
popoverViewController.contentSizeForViewInPopover = CGSizeMake(320, 230);
sortPickerView.delegate = self;
sortPickerView.dataSource = self;
sortPickerView.showsSelectionIndicator = YES;
[popoverView addSubview:sortPickerView];
NSUserDefaults *ud1 = [NSUserDefaults standardUserDefaults];
if ([ud1 objectForKey:@"languages"])
{
NSUInteger row1 = [languages indexOfObject:[ud1 objectForKey:@"languages"]];
if (row1)
{
[sortPickerView selectRow:row1 inComponent:0 animated:YES];
}
}
else
{
[sortPickerView selectRow:0 inComponent:0 animated:YES];
}
CGRect popFrame = lbl_language.frame;
popFrame.origin.y = popFrame.origin.y + popFrame.size.height + 70;
popFrame.origin.x = popFrame.origin.x + 100;
popoverViewController.view = popoverView;
self.SortPopover = [[UIPopoverController alloc] initWithContentViewController:popoverViewController];
[self.SortPopover presentPopoverFromRect:popFrame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
}
}
由于我不清楚的原因，UI按钮没有收到按钮-它从未突出显示。它没有被我能看到的另一个视图覆盖（唯一的另一个视图是选择器）。无论如何，我添加了一个UIToolbar，并将按钮更改为bar按钮项，效果很好 在这里，你可以触发你的按钮动作。。只需将代码放在触发按钮操作的位置。单击单元格时需要UIPopoverController。。我是对的。我不确定我是否明白你的意思。IBAction方法位于FFFuelQuantityPickerVC视图控制器中。self.poc是一个UIPopoverController，通过更改其contentViewController重新使用。我的ViewController的picker部分工作正常-委托方法pickerView:didSelectRow:Incomonent:正在按预期调用。这是连接到ViewController视图中“我的UIButton”的iAction方法未被触发。请将，放置在触发按钮的位置。
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0)
{
if (indexPath.row == 1)
{
//PopoverView controller.........................................................................
UIViewController *popoverViewController = [[UIViewController alloc] init];
//PopoverView....................................................................................
UIView *popoverView = [[UIView alloc]init];
[popoverView setBackgroundColor:[UIColor blackColor]];
//Navigation bar and Barbutton items..............................................................
UINavigationBar *navBar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
navBar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *btnDone = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doDone)];
UIBarButtonItem *btnCancel = [[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStylePlain target:self action:@selector(doCancel)];
UINavigationItem *navItem = [[UINavigationItem alloc]init];
navItem.rightBarButtonItem = btnDone;
navItem.leftBarButtonItem = btnCancel;
navBar.items = [[NSArray alloc]initWithObjects:navItem, nil];
[popoverView addSubview:navBar];
//UIPickerView.....................................................................................
UIPickerView *sortPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 50, 320, 180)];
popoverViewController.contentSizeForViewInPopover = CGSizeMake(320, 230);
sortPickerView.delegate = self;
sortPickerView.dataSource = self;
sortPickerView.showsSelectionIndicator = YES;
[popoverView addSubview:sortPickerView];
NSUserDefaults *ud1 = [NSUserDefaults standardUserDefaults];
if ([ud1 objectForKey:@"languages"])
{
NSUInteger row1 = [languages indexOfObject:[ud1 objectForKey:@"languages"]];
if (row1)
{
[sortPickerView selectRow:row1 inComponent:0 animated:YES];
}
}
else
{
[sortPickerView selectRow:0 inComponent:0 animated:YES];
}
CGRect popFrame = lbl_language.frame;
popFrame.origin.y = popFrame.origin.y + popFrame.size.height + 70;
popFrame.origin.x = popFrame.origin.x + 100;
popoverViewController.view = popoverView;
self.SortPopover = [[UIPopoverController alloc] initWithContentViewController:popoverViewController];
[self.SortPopover presentPopoverFromRect:popFrame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
}
}