UIScroll and Uipickview

• . h

#import <UIKit/UIKit.h>

#define WIDTH Self.view.frame.size.width

#define HEIGHT Self.view.frame.size.height

@interface viewcontroller:uiviewcontroller<uiscrollviewdelegate, Uipickerviewdelegate, UIPickerViewDataSource >

/**

* Scrolling View

*/

@property (nonatomic, strong) Uiscrollview *scroll;

/**

* Pagination Control

*/

@property (nonatomic, strong) Uipagecontrol *page;

/**

* scroll bar

*/

@property (nonatomic, strong) Uipickerview *pick;

Data source

@property (nonatomic, strong) Nsarray *arr_data;

@end

• . m

#import "ViewController.h"

@interface Viewcontroller ()

@end

@implementation Viewcontroller

-(void) viewdidload

{

[Super Viewdidload];

Self.scroll = [[Uiscrollview alloc] initWithFrame:self.view.frame];

Self.scroll.backgroundColor = [Uicolor Graycolor];

Self.scroll.contentSize = Cgsizemake (width*3, HEIGHT);

Page out

self.scroll.pagingEnabled = YES;

Hide scroll bar

Self.scroll.showsHorizontalScrollIndicator = NO;

Uiimageview *IMV1 = [[Uiimageview alloc] initWithFrame:self.view.frame];

Imv1.backgroundcolor = [Uicolor Purplecolor];

Uiimageview *imv2 = [[Uiimageview alloc] initwithframe:cgrectmake (width, 0, width, HEIGHT)];

Imv2.backgroundcolor = [Uicolor Bluecolor];

Uiimageview *imv3 = [[Uiimageview alloc] Initwithframe:cgrectmake (width*2, 0, WIDTH, HEIGHT)];

Imv3.backgroundcolor = [Uicolor Redcolor];

[Self.scroll ADDSUBVIEW:IMV1];

[Self.scroll addsubview:imv2];

[Self.scroll Addsubview:imv3];

[Self.view AddSubview:self.scroll];

Pagination identification

Self.page = [[Uipagecontrol alloc] Initwithframe:cgrectmake ((WIDTH-120)/2, HEIGHT-100, 120, 30)];

Self.page.numberOfPages = 3;

Self.page.backgroundColor = [Uicolor Clearcolor];

[Self.view AddSubview:self.page];

Agent

Self.scroll.delegate = self;

scroll bar

Self.arr_data = @[@ "year", @ "month", @ "Day", @ "time", @ "Min", @ "seconds"];

Self.pick = [[Uipickerview alloc] Initwithframe:cgrectmake ((WIDTH-200)/2, HEIGHT-300, 200, 100)];

Two agents (proxies and data sources)

Self.pick.delegate = self;

Self.pick.dataSource = self;

[Self.view AddSubview:self.pick];

}

Page out

-(void) Scrollviewdidscroll: (Uiscrollview *) ScrollView

{

Self.page.currentPage = (int) scrollview.contentoffset.x/width;

}

Agent

#pragma mark-delegate

-(Nsinteger) Numberofcomponentsinpickerview: (Uipickerview *) Pickerview

{

return 1;

}

#pragma mark-sourcedata

Data source

-(Nsinteger) Pickerview: (Uipickerview *) Pickerview numberofrowsincomponent: (Nsinteger) component

{

return self.arr_data.count;

}

#pragma mark-title

-(Nullable NSString *) Pickerview: (Uipickerview *) Pickerview Titleforrow: (nsinteger) Row forcomponent: (Nsinteger) Component

{

return Self.arr_data[row];

}

#pragma mark-selecter

-(void) Pickerview: (Uipickerview *) Pickerview Didselectrow: (nsinteger) Row incomponent: (Nsinteger) component

{

Row: Subscript

NSLog (@ "%@", Self.arr_data[row]);

}

#pragma mark-rowheight

-(CGFloat) Pickerview: (Uipickerview *) Pickerview rowheightforcomponent: (Nsinteger) component

{

return 50;

}

UIScroll and Uipickview