1 实现如下: 2 首先加入委托:UIPopoverControllerDelegate 3 先创建一个popover和实例化tableview的类(该类的xib文件中,view中就放了一个tablview): 4 UIPopoverController *popover; 5 popTableViewController *popoverContent; 6 7 在CustomerDetailVC.m放入: 8 #import "CustomerDetailVC.h" 9 #import "popTableViewController.h" 10 @implementation CustomerDetailVC 11 //点击Country后面按钮的时候,弹出popover: 12 -(IBAction)btnPressed:(id)sender 13 { 14 popoverContent.oceanaViewController = self; 15 16 popover = [[UIPopoverController alloc] initWithContentViewController:popoverContent]; 17 [popover setPopoverContentSize:CGSizeMake(330,330)]; 18 popoverContent.contentSizeForViewInPopover=popoverContent.view.bounds.size; 19 popoverContent.popoverController = popover; 20 [popover presentPopoverFromRect:((UIView *)sender).frame 21 inView:self.view 22 permittedArrowDirections:UIPopoverArrowDirectionAny 23 animated:YES]; 24 [popoverContent release]; //在这里popoverContent的retainCount =4; 25 [popoverContent.myArray release]; 26 } 27 - (void)popoverControllerDidDismissPopover:(UIPopoverController*)popoverController{ 28 if (popover) { 29 [popover dismissPopoverAnimated:YES]; 30 [popover release]; 31 popover=nil; 32 if (popoverContent != nil) { 33 [popoverContent release]; 34 popoverContent = nil; 35 } 36 } 37 } 38 //closing popover 39 -(void)killPopoversOnSight { 40 if (popover) { 41 [popover dismissPopoverAnimated:NO]; 42 } 43 } 44 在popTableViewController.h文件中: 45 #import "CustomerDetailVC.h" 46 @class CustomerDetailVC; 47 @interface popTableViewController : UIViewController{ 48 IBOutlet UITableView *myTableView; 49 NSMutableArray *myArray; 50 UIPopoverController *popoverController; 51 CustomerDetailVC *oceanaViewController; 52 NSString *selectStr; 53 54 } 55 56 @property (nonatomic,retain) UITableView *myTableView; 57 @property (nonatomic,retain) NSMutableArray *myArray; 58 @property (nonatomic,retain) UIPopoverController *popoverController; 59 @property (nonatomic,retain) NSString *selectStr; 60 @property (nonatomic,assign) CustomerDetailVC *oceanaViewController; 61 实现文件中: 62 #import "popTableViewController.h" 63 @implementation popTableViewController 64 @synthesize myTableView; 65 @synthesize selectStr; 66 @synthesize myArray; 67 @synthesize popoverController; 68 @synthesize oceanaViewController; 69 70 71 -(void)viewDidLoad 72 { 73 [myTableView setDelegate:self]; 74 [myTableView setDataSource:self]; 75 } 76 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ 77 return @"Name"; 78 } 79 //指定有多少个分区(Section),默认为1 80 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 81 return 1; 82 } 83 84 //指定每个分区中有多少行,默认为1 85 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ 86 return [myArray count]; 87 } 88 //绘制Cell 89 -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 90 91 static NSString *SimpleTableIdentifier = @"SimpleTableIdentifier"; 92 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SimpleTableIdentifier]; 93 if (cell == nil) { 94 cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:SimpleTableIdentifier] autorelease]; 95 } 96 cell.textLabel.text =[myArray objectAtIndex:indexPath.row]; 97 return cell; 98 } 99 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 100 selectStr =[[NSString alloc] initWithFormat:@"%@",[myArray objectAtIndex:indexPath.row]]; 101 [oceanaViewController killPopoversOnSight]; 102 [oceanaViewController textGetValue:selectStr]; //CustomerDetailVC中的一个方法 103 [selectStr release]; 104 }
只能在ipad设备上面使用;作用是用于显示临时内容,特点是总是显示在当前视图最前端,当单击界面的其他地方时自动消失。
1 UIViewController* vCtrl = [[UIViewController alloc] init]; 2 UIPopoverController* popController = [[UIPopoverController alloc] initWithContentViewController:vCtrl]; 3 4 popController.popoverContentSize = CGSizeMake(320,480); 5 CGrect rect = CGRectMake(0,0,2,2); 6 7 [popController presentPopoverFromRect:rect 8 inView:aView 9 permittedArrowDirections:UIPopoverArrowDirectionUp 10 animated:YES];
- - (id)initWithContentViewController:(UIViewController *)viewController
- @property (nonatomic, retain) UIViewController *contentViewController
- - (void)setContentViewController:(UIViewController *)viewController animated:(BOOL)animated
2.设置箭头方向:
@property (nonatomic, readonly) UIPopoverArrowDirection popoverArrowDirection3.设置内容大小:
@property (nonatomic) CGSize popoverContentSize备注:
<1>.如果从一个导航按钮处呈现,使用:presentPopoverFromBarButtonItem:permittedArrowDirections:animated:;如果要从一个视图出呈现,使用:presentPopoverFromRect:inView:permittedArrowDirections:animated:<2>.如果设备旋转以后,位置定位错误需要在父视图控制器的下面方法里面重新定位:
didRotateFromInterfaceOrientation:(在这个方法体里面重新设置rect)然后再次调用:- (void)presentPopoverFromRect:(CGRect)rect inView:(UIView *)view permittedArrowDirections:(UIPopoverArrowDirection)arrowDirections animated:(BOOL)animated