IOS Uicollectionview Handwriting Code implementation steps

IOS Uicollectionview Handwriting Code implementation steps

//

ViewController.h

CollectionView Handwriting Code

//

Created by yangxiuying on 14/11/28.

Copyright (c) 2014 lanjiying. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface viewcontroller:uiviewcontroller<uicollectionviewdatasource,uicollectionviewdelegate>

{

NSString * identifier;

}

//

Viewcontroller.m

CollectionView Handwriting Code

//

Created by yangxiuying on 14/11/28.

Copyright (c) 2014 lanjiying. All rights reserved.

//

#import "ViewController.h"

@interface Viewcontroller ()

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Additional setup after loading the view, typically from a nib.

identifier = @ "cell";

Initialize layout

Uicollectionviewflowlayout * FlowLayout =[[uicollectionviewflowlayout alloc] init];

[FlowLayout setscrolldirection:uicollectionviewscrolldirectionvertical];

Uiedgeinsets top = {15,10,15,5};

[FlowLayout Setsectioninset:top];

Uicollectionview * CollectionView =[[uicollectionview alloc] Initwithframe:cgrectmake (0, 30, 320, 480) Collectionviewlayout:flowlayout];

Registering cells

[CollectionView Registerclass:[uicollectionviewcell Class]forcellwithreuseidentifier:identifier];

Set up Proxy

Collectionview.delegate = self;

Collectionview.datasource = self;

[Self.view Addsubview:collectionview];

}

#pragma mark-collectionview delegate

Set partition

-(Nsinteger) Numberofsectionsincollectionview: (Uicollectionview *) CollectionView

{

return 1;

}

Set the Size box for an element

-(Uiedgeinsets) CollectionView: (Uicollectionview *) CollectionView layout: (Uicollectionviewlayout *) Collectionviewlayout Insetforsectionatindex: (nsinteger) Section

{

Uiedgeinsets top = {30,15,30,15};

return top;

}

Number of elements on each partition

-(Nsinteger) CollectionView: (Uicollectionview *) CollectionView numberofitemsinsection: (NSInteger) Section

{

return 24;

}

Set element content

-(Uicollectionviewcell *) CollectionView: (Uicollectionview *) CollectionView Cellforitematindexpath: (NSIndexPath *) Indexpath

{

Uicollectionviewcell * Cell =[collectionview dequeuereusablecellwithreuseidentifier:identifier ForIndexPath: Indexpath];

[Cell SizeToFit];

Cell.backgroundcolor =[uicolor Greencolor];

return cell;

}

Set cell width

Set element size

-(Cgsize) CollectionView: (Uicollectionview *) CollectionView layout: (uicollectionviewlayout *) collectionviewlayout Sizeforitematindexpath: (Nsindexpath *) indexpath{

Return Cgsizemake (140,160);

}

IOS Uicollectionview Handwriting Code implementation steps