The basic use of popover for the ipad development of the Cat learning iOS

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Address: http://blog.csdn.net/u013357243

One:

Two: Attention

For methods [Uipopovercontroller Dealloc] reached while popover is still visible.
When the popover is still showing, it hangs.
Don't allow popover to hang up when it's displayed.
PopOver must be dead when it's gone.

Three: Core code

- (ibaction) Popmenu: (ID) Item {//0. ContentMenuviewcontroller *menu = [[Menuviewcontroller alloc] init];//1. Create a uipopover    Uipopovercontroller*popover = [[UipopovercontrollerAlloc] initwithcontentviewcontroller:[[UinavigationcontrollerAlloc] Initwithrootviewcontroller:menu];//2. Setting Dimensions//Popover.popovercontentsize = Cgsizemake (5);    //3. From where to show-point to item[PopOver presentpopoverfrombarbuttonitem:item Permittedarrowdirections:uipopoverarrowdirectionany Animated:YES]; Self. PopOver= PopOver;}

Four: All code show Viewcontroller

#import "ViewController.h" #import "MenuViewController.h"  @interface viewcontroller ()- (ibaction) Popmenu: (ID) Item;@property(nonatomic,Strong)Uipopovercontroller*popover;@end @implementation viewcontroller - (void) Viewdidload {[SuperViewdidload];}//-[uipopovercontroller Dealloc] reached while popover is still visible.//When the popover is still showing, it 's dead.//Do not allow PopOver to hang when displayed//PopOver must be dead when it disappears./** * Popup popover Menu * *- (ibaction) Popmenu: (ID) Item {//0. ContentMenuviewcontroller *menu = [[Menuviewcontroller alloc] init];//1. Create a uipopover    Uipopovercontroller*popover = [[UipopovercontrollerAlloc] initwithcontentviewcontroller:[[UinavigationcontrollerAlloc] Initwithrootviewcontroller:menu];//2. Setting Dimensions//Popover.popovercontentsize = Cgsizemake (5);    //3. From where to show-point to item[PopOver presentpopoverfrombarbuttonitem:item Permittedarrowdirections:uipopoverarrowdirectionany Animated:YES]; Self. PopOver= PopOver;}@end

Menuviewcontroller

#import "MenuViewController.h"  @interface menuviewcontroller ()@property(nonatomic,Strong)Nsarray*titles;@end @implementation menuviewcontroller - (void) Viewdidload {[SuperViewdidload]; Self. Titles= @[@"Settings", @"Clear Cache", @"Exit", @"Basic Information"]; Self. Title= @"Menu"; Self. View. BackgroundColor= [UicolorBluecolor];CGFloatW = the;CGFloath = Self. Titles. Count* -; Self. Preferredcontentsize= Cgsizemake (W, h);//Self.contentsizeforviewinpopover = Cgsizemake (W, h);}#pragma mark-table view data source- (Nsinteger) TableView: (UITableView*) TableView numberofrowsinsection: (Nsinteger) Section {return  Self. Titles. Count;} - (UITableViewCell*) TableView: (UITableView*) TableView Cellforrowatindexpath: (Nsindexpath*) indexpath{Static NSString*id = @"Cell";UITableViewCell*cell = [TableView dequeuereusablecellwithidentifier:id];if(!cell) {cell = [[UITableViewCellAlloc] Initwithstyle:uitableviewcellstylesubtitle Reuseidentifier:id]; } cell. Textlabel. Text= Self. Titles[Indexpath. Row];returnCell;} - (void) TableView: (UITableView*) TableView Didselectrowatindexpath: (Nsindexpath*) indexpath{Uiviewcontroller*VC = [[UiviewcontrollerALLOC] init]; Vc. View. BackgroundColor= [UicolorRedcolor]; [ Self. NavigationcontrollerPUSHVIEWCONTROLLER:VC Animated:YES];}@end

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The basic use of popover for the ipad development of the Cat learning iOS