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UIPopoverController的使用

發布時間：2024/9/20 编程问答 29 豆豆

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UIPopoverController的使用2011-10-04 13:41

有些時候需要用到彈出窗口，這個時候UIPopoverController就有用武之地了，下面介紹一個使用UIPopoverController的示例，以供參考。實現效果如下：

為了實現這一效果并使用UIPopoverController，這里搞了兩個ｃｏｎｔｒｏｌｌｅｒ，具體定義如下。

//? Created by Chelsea Wang 4209898762 on 11-10-4.

#import?<UIKit/UIKit.h>

@interface?UIActionSheetDemoViewController :?UIViewController<UIPopoverControllerDelegate>{

? ??UIPopoverController* _popover;

}

//? UIActionSheetDemoViewController.m

//? UIActionSheetDemo

//? Created by Chelsea Wang 4209898762 on 11-10-4.

#import?"UIActionSheetDemoViewController.h"

#import?"popController.h"

@implementation?UIActionSheetDemoViewController

@synthesize?popover =?_popover;

- (void)didReceiveMemoryWarning

{

? ??// Releases the view if it doesn't have a superview.

? ? [super?didReceiveMemoryWarning];

?? ?

? ??// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

? ? [super?viewDidLoad];

?? ?

? ??UISegmentedControl* settingView = [[UISegmentedControl?alloc]?initWithItems:[NSArrayarrayWithObjects:@"FootballCF",@"BasketballCF",nil]];

? ? [settingView?setSegmentedControlStyle:UISegmentedControlStyleBar];

? ? [settingView?setFrame:CGRectMake(500,?900,?160,?75)];

? ? [settingView?setNeedsLayout];

? ? [settingView?addTarget:self?action:@selector(segmentAction:)?forControlEvents:UIControlEventValueChanged];

? ? [self.view?addSubview:settingView];

? ? [settingView?release];

}

- (void)viewDidUnload

{

? ? [super?viewDidUnload];

? ??// Release any retained subviews of the main view.

? ??// e.g. self.myOutlet = nil;

?? ?

? ??if?(self.popover?!=?nil) {

? ? ? ? [self.popover?release];

? ? ? ??self.popover?=?nil;

? ? }

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

? ??// Return YES for supported orientations

? ??return?YES;

}

-(void)segmentAction:(UISegmentedControl*)seg{

? ??//清除已經顯示的彈出窗口

? ??if?(self.popover.popoverVisible) {

? ? ? ? [self.popover?dismissPopoverAnimated:YES];

? ? }

? ??//初始化待顯示控制器

? ??popController* controller = [[popController?alloc]?init];

? ??//設置待顯示控制器的范圍

? ? [controller.view?setFrame:CGRectMake(550,?490,?350,?450)];

? ??//設置待顯示控制器視圖的尺寸

? ? controller.contentSizeForViewInPopover?=?CGSizeMake(350,?450);

? ??//初始化彈出窗口

? ??UIPopoverController* pop = [[UIPopoverController?alloc]?initWithContentViewController:controller];

? ? controller.popover?= pop;

? ??self.popover?= pop;

? ??self.popover.delegate?=?self;

? ??//設置彈出窗口尺寸

? ??self.popover.popoverContentSize?=?CGSizeMake(350,?450);

?? ?

? ??//顯示，其中坐標為箭頭的坐標以及尺寸

? ? [self.popover?presentPopoverFromRect:CGRectMake(550,?890,?10,?10)?inView:self.viewpermittedArrowDirections:UIPopoverArrowDirectionDown?animated:NO];

?? ?

? ? [controller?release];

? ? [pop?release];

?? ?

? ??//[self.popover dismissPopoverAnimated:YES];

}

-(void)popoverControllerDidDismissPopover:(UIPopoverController?*)popoverController{

? ??NSLog(@"popover dismiss");

}

@end

//? popController.h

//? UIActionSheetDemo

//? Created by Chelsea Wang 4209898762 on 11-10-4.

#import?<UIKit/UIKit.h>

@interface?popController :?UIViewController<UIPickerViewDelegate,UIPickerViewDataSource>{

? ??UIPopoverController* _popover;

? ??BOOL?isChelsea;

}

@property(nonatomic,retain)UIPopoverController* popover;

@end

//? popController.m

//? UIActionSheetDemo

//? Created by Chelsea Wang 4209898762 on 11-10-4.

#import?"popController.h"

@implementation?popController

@synthesize?popover =?_popover;

//定義選項顯示內容

const?char* chelsea[12] = {"博阿斯","切赫","阿什利科爾","特里","路易斯","伊萬諾維奇","蘭帕德","拉米雷斯","梅來雷斯","阿內爾卡","德羅巴","托雷斯"};

- (id)initWithNibName:(NSString?*)nibNameOrNil bundle:(NSBundle?*)nibBundleOrNil

{

? ??self?= [super?initWithNibName:nibNameOrNil?bundle:nibBundleOrNil];

? ??if?(self) {

? ? ? ??// Custom initialization

?? ? ? ?

? ? }

? ??return?self;

}

- (void)didReceiveMemoryWarning

{

? ??// Releases the view if it doesn't have a superview.

? ? [super?didReceiveMemoryWarning];

?? ?

? ??// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

- (void)viewDidLoad

{

? ? [super?viewDidLoad];

? ??// Do any additional setup after loading the view from its nib.

?? ?

? ??isChelsea?=?NO;

?? ?

? ??//添加完成按鈕

? ??UISegmentedControl* doneButton = [[UISegmentedControl?alloc]?initWithItems:[NSArrayarrayWithObjects:@"Done",?nil]];

? ? [doneButton?setSegmentedControlStyle:UISegmentedControlStyleBar];

? ? [doneButton?setFrame:CGRectMake(self.view.bounds.origin.x+self.view.bounds.size.width-100,self.view.bounds.origin.y+5,?75,?50)];

? ? [doneButton?addTarget:self?action:@selector(segmentAction:)?forControlEvents:UIControlEventValueChanged];

? ? [self.view?addSubview:doneButton];

? ? [doneButton?release];

? ??//添加選擇項

? ??UISegmentedControl* clubSeg = [[UISegmentedControl?alloc]?initWithItems:[NSArrayarrayWithObjects:@"Chelsea",@"AC Milan",@"Livupoor",@"Asenal",nil]];

? ? [clubSeg?setSegmentedControlStyle:UISegmentedControlStyleBar];

? ? [clubSeg?setFrame:CGRectMake(self.view.bounds.origin.x,self.view.bounds.origin.y+75,self.view.bounds.size.width,50)];

? ? [clubSeg?addTarget:self?action:@selector(chooseClub:)?forControlEvents:UIControlEventValueChanged];

? ? [self.view?addSubview:clubSeg];

? ? [clubSeg?release];

?? ?

? ??//添加選擇列表

? ??UIPickerView* picker = [[UIPickerView?alloc]?initWithFrame:CGRectMake(self.view.bounds.origin.x,self.view.bounds.origin.y+150,?self.view.bounds.size.width,self.view.bounds.size.height)];

? ? [picker?setBounds:CGRectMake(self.view.bounds.origin.x,?self.view.bounds.origin.y+75,self.view.bounds.size.width,self.view.bounds.size.height)];

? ? picker.delegate?=?self;

? ? picker.dataSource?=?self;

? ? picker.showsSelectionIndicator?=?YES;

? ? [self.view?addSubview:picker];

? ? [picker?setTag:101];

? ? [picker?release];

?? ?

}

- (void)viewDidUnload

{

? ? [super?viewDidUnload];

? ??// Release any retained subviews of the main view.

? ??// e.g. self.myOutlet = nil;

? ??if?(self.popover?!=?nil) {

? ? ? ? [self.popover?release];

? ? ? ??self.popover?=?nil;

? ? }

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

? ??// Return YES for supported orientations

? ??return?YES;

}

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView?*)pickerView{

? ??return?1;

}

-(NSInteger)pickerView:(UIPickerView?*)pickerView numberOfRowsInComponent:(NSInteger)component{

? ??return?12;

}

-(NSString*)pickerView:(UIPickerView?*)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{

? ??if?(isChelsea) {

? ? ? ??return?[NSString?stringWithCString:chelsea[row]?encoding:NSUTF8StringEncoding];

? ? }else{

? ? ? ??return?[NSString?stringWithFormat:@"chelsea_%d",arc4random()%12];

? ? ? ? ;

? ? }

?? ?

}

-(void)segmentAction:(UISegmentedControl*)seg{

? ? [self.view?removeFromSuperview];

? ? [self.popover?dismissPopoverAnimated:YES];

}

-(void)chooseClub:(UISegmentedControl*)seg{

? ??NSInteger?index = seg.selectedSegmentIndex;

? ??UIPickerView* picker = (UIPickerView*)[self.view?viewWithTag:101];

? ??switch?(index) {

? ? ? ??case?0:{

? ? ? ? ? ??NSLog(@"you choose Chelsea");

? ? ? ? ? ??isChelsea?=?YES;

? ? ? ? ? ? [picker?reloadAllComponents];

? ? ? ? ? ??break;

? ? ? ? }

? ? ? ??case?1:

? ? ? ? ? ??NSLog(@"you choose AC Milan");

? ? ? ? ? ??isChelsea?=?NO;

? ? ? ? ? ? [picker?reloadAllComponents];

? ? ? ??case?2:

? ? ? ? ? ??NSLog(@"you choose Livopoor");

? ? ? ? ? ??isChelsea?=?NO;

? ? ? ? ? ? [picker?reloadAllComponents];

? ? ? ??case?3:

? ? ? ? ? ??NSLog(@"you choose Asenal");

? ? ? ? ? ??isChelsea?=?NO;

? ? ? ? ? ? [picker?reloadAllComponents];

? ? ? ??default:

? ? ? ? ? ??break;

? ? }

}

@end

@property(nonatomic,retain)UIPopoverController* popover;

@end

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