iOS开源照片浏览器框架 优化内存 支持网络图片 block数据源

iOS开源照片浏览器框架 优化内存 支持网络图片 block数据源

SGPhotoBrowser

SGPhotoBrowser is a simple iOS photo browser with optional grid view, you can simplely inherit the SGPhotoBrowser controller to custom the display and provide the dataSource using block.

Screenshots

How to Get Started

Download SGPhotoBrowser and try out the include iPhone example app.

Installation

Drag the SGPhotoBrowser folder to your project. Attention: The SGPhotoBrowser depends on SDWebImage and MBProgressHUD, if there are these frameworks in your project, you can just delete them in the SGPhotoBrowser/Vendor folder

Usage

1.Import and inherit SGPhotoBrowser

#import "SGPhotoBrowser.h"@interface MyBrowserViewController : SGPhotoBrowser@end

2.Make an array to save the PhotoModel.

Every photo is describing by a SGPhotoModel, a SGPhotoBrowser has two URL properties, they are photoURL and thumbURL, if the photo is a local media, please use [NSURL fileURLWithPath:@""] to make the URL.

@interface MyBrowserViewController ()@property (nonatomic, strong) NSMutableArray *photoModels;@end

3.Set the dataSource callback using block.

The sg_ws() is a macro to define weakSelf, that pretend the block from cycle retain.When the models are changed, you can call the reloadData method to tell the browser to recall the dataSource.

sg_ws();[self setNumberOfPhotosHandlerBlock:^NSInteger{ return weakSelf.photoModels.count;}];[self setphotoAtIndexHandlerBlock:^SGPhotoModel *(NSInteger index) { return weakSelf.photoModels[index];}];[self setReloadHandlerBlock:^{ // add reload data code here}];[self setDeleteHandlerBlock:^(NSIndexSet *indexSet) { [weakSelf.photoModels removeObjectsAtIndexes:indexSet]; [weakSelf reloadData];}];

4.Set models to display photo from local and web.

There is a sample below to show how to set URL for local and web media.

NSMutableArray *photoModels = @[].mutableCopy;NSArray *photoURLs = @[@"http://img0.ph.126-/PgCjtjY9cStBeK-rugbj_g==/6631715378048606880.jpg", @"http://img2.ph.126-/MReos71sTqftWSZuXz_boQ==/6631554849350946263.jpg", @"http://img1.ph.126-/0Pz-IkvpsDr3lqsZGdIO4A==/6631566943978852327.jpg"];NSArray *thumbURLs = @[@"http://img2.ph.126-/q9kJFjtxcHzzJZA5EMaSUg==/6631671397583497919.png", @"http://img1.ph.126-/9blT0g2-VgAueTagWFARlA==/6631683492211398013.png", @"http://img1.ph.126-/smEiDh0FuAVQFz3rcQQdrw==/6631691188792792414.png"];// web imagesfor (NSUInteger i = 0; i < photoURLs.count; i++) { NSURL *photoURL = [NSURL URLWithString:photoURLs[i]]; NSURL *thumbURL = [NSURL URLWithString:thumbURLs[i]]; SGPhotoModel *model = [SGPhotoModel new]; model.photoURL = photoURL; model.thumbURL = thumbURL; [photoModels addObject:model];}// local imagesfor (NSUInteger i = 1; i <= 8; i++) { NSURL *photoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"photo%@",@(i)] ofType:@"jpg"]]; NSURL *thumbURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"photo%@t",@(i)] ofType:@"jpg"]]; SGPhotoModel *model = [SGPhotoModel new]; model.photoURL = photoURL; model.thumbURL = thumbURL; [photoModels addObject:model];}self.photoModels = photoModels;[self reloadData];

Custom Settings

You can set the numberOfPhotosPerRow property to set how many photos are there in every row, it's 4 by default.

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