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iOS image picker
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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // DNAlbumTableViewController.h | ||
| // ImagePicker | ||
| // | ||
| // Created by DingXiao on 15/2/10. | ||
| // Copyright (c) 2015年 Dennis. All rights reserved. | ||
| // | ||
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| #import <UIKit/UIKit.h> | ||
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| @interface DNAlbumTableViewController : UITableViewController | ||
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| @end |
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| // | ||
| // DNAlbumTableViewController.m | ||
| // ImagePicker | ||
| // | ||
| // Created by DingXiao on 15/2/10. | ||
| // Copyright (c) 2015年 Dennis. All rights reserved. | ||
| // | ||
| #import <AssetsLibrary/AssetsLibrary.h> | ||
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| #import "DNAlbumTableViewController.h" | ||
| #import "DNImagePickerController.h" | ||
| #import "DNImageFlowViewController.h" | ||
| #import "UIViewController+DNImagePicker.h" | ||
| #import "DNUnAuthorizedTipsView.h" | ||
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| static NSString* const dnalbumTableViewCellReuseIdentifier = @"dnalbumTableViewCellReuseIdentifier"; | ||
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| @interface DNAlbumTableViewController () | ||
| @property (nonatomic, strong) ALAssetsLibrary *assetsLibrary; | ||
| @property (nonatomic, strong) NSArray *groupTypes; | ||
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| #pragma mark - dataSources | ||
| @property (nonatomic, strong) NSArray *assetsGroups; | ||
| @end | ||
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| @implementation DNAlbumTableViewController | ||
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| #pragma mark - life cycle | ||
| - (void)viewDidLoad { | ||
| [super viewDidLoad]; | ||
| [self setupView]; | ||
| [self setupData]; | ||
| [self loadData]; | ||
| } | ||
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| - (void)didReceiveMemoryWarning { | ||
| [super didReceiveMemoryWarning]; | ||
| // Dispose of any resources that can be recreated. | ||
| } | ||
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| #pragma mark - mark setup Data and View | ||
| - (void)loadData | ||
| { | ||
| __typeof__(self) __weak weakSelf = self; | ||
| //__weak typeof(self) weakSelf = self; | ||
| [self loadAssetsGroupsWithTypes:self.groupTypes completion:^(NSArray *groupAssets) | ||
| { | ||
| weakSelf.assetsGroups = groupAssets; | ||
| [weakSelf.tableView reloadData]; | ||
| }]; | ||
| } | ||
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| - (void)setupData | ||
| { | ||
| self.groupTypes = @[@(ALAssetsGroupAll)]; | ||
| self.assetsGroups = [NSMutableArray new]; | ||
| } | ||
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| - (void)setupView | ||
| { | ||
| self.title = NSLocalizedStringFromTable(@"albumTitle", @"DNImagePicker", @"photos"); | ||
| [self createBarButtonItemAtPosition:DNImagePickerNavigationBarPositionRight | ||
| text:NSLocalizedStringFromTable(@"cancel", @"DNImagePicker", @"取消") | ||
| action:@selector(cancelAction:)]; | ||
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| [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:dnalbumTableViewCellReuseIdentifier]; | ||
| UIView *view = [[UIView alloc] initWithFrame:CGRectZero]; | ||
| self.tableView.tableFooterView = view; | ||
| } | ||
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| #pragma mark - ui actions | ||
| - (void)cancelAction:(id)sender | ||
| { | ||
| DNImagePickerController *navController = [self dnImagePickerController]; | ||
| if (navController && [navController.imagePickerDelegate respondsToSelector:@selector(dnImagePickerControllerDidCancel:)]) { | ||
| [navController.imagePickerDelegate dnImagePickerControllerDidCancel:navController]; | ||
| } | ||
| } | ||
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| #pragma mark - getter/setter | ||
| - (ALAssetsLibrary *)assetsLibrary | ||
| { | ||
| if (nil == _assetsLibrary) { | ||
| _assetsLibrary = [[ALAssetsLibrary alloc] init]; | ||
| } | ||
| return _assetsLibrary; | ||
| } | ||
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| - (DNImagePickerController *)dnImagePickerController | ||
| { | ||
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| if (nil == self.navigationController | ||
| || | ||
| ![self.navigationController isKindOfClass:[DNImagePickerController class]]) | ||
| { | ||
| NSAssert(false, @"check the navigation controller"); | ||
| } | ||
| return (DNImagePickerController *)self.navigationController; | ||
| } | ||
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| - (NSAttributedString *)albumTitle:(ALAssetsGroup *)assetsGroup | ||
| { | ||
| NSString *albumTitle = [assetsGroup valueForProperty:ALAssetsGroupPropertyName]; | ||
| NSString *numberString = [NSString stringWithFormat:@" (%@)",@(assetsGroup.numberOfAssets)]; | ||
| NSString *cellTitleString = [NSString stringWithFormat:@"%@%@",albumTitle,numberString]; | ||
| NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:cellTitleString]; | ||
| [attributedString setAttributes: @{ | ||
| NSFontAttributeName : [UIFont systemFontOfSize:16.0f], | ||
| NSForegroundColorAttributeName : [UIColor blackColor], | ||
| } | ||
| range:NSMakeRange(0, albumTitle.length)]; | ||
| [attributedString setAttributes:@{ | ||
| NSFontAttributeName : [UIFont systemFontOfSize:16.0f], | ||
| NSForegroundColorAttributeName : [UIColor grayColor], | ||
| } range:NSMakeRange(albumTitle.length, numberString.length)]; | ||
| return attributedString; | ||
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| } | ||
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| - (void)showUnAuthorizedTipsView | ||
| { | ||
| DNUnAuthorizedTipsView *view = [[DNUnAuthorizedTipsView alloc] initWithFrame:self.tableView.frame]; | ||
| self.tableView.backgroundView = view; | ||
| // [self.tableView addSubview:view]; | ||
| } | ||
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| #pragma mark - Table view data source | ||
| - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section | ||
| { | ||
| return self.assetsGroups.count; | ||
| } | ||
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| - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { | ||
| UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:dnalbumTableViewCellReuseIdentifier forIndexPath:indexPath]; | ||
| cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; | ||
| ALAssetsGroup *group = self.assetsGroups[indexPath.row]; | ||
| cell.textLabel.attributedText = [self albumTitle:group]; | ||
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| //choose the latest pic as poster image | ||
| __weak UITableViewCell *blockCell = cell; | ||
| [group enumerateAssetsAtIndexes:[NSIndexSet indexSetWithIndex:group.numberOfAssets-1] options:NSEnumerationConcurrent usingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) { | ||
| if (result) { | ||
| *stop = YES; | ||
| blockCell.imageView.image = [UIImage imageWithCGImage:result.thumbnail]; | ||
| } | ||
| }]; | ||
| return cell; | ||
| } | ||
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| - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath | ||
| { | ||
| return 64; | ||
| } | ||
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| - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath | ||
| { | ||
| return 64; | ||
| } | ||
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| #pragma mark - tableView delegate | ||
| - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath | ||
| { | ||
| ALAssetsGroup *group = self.assetsGroups[indexPath.row]; | ||
| NSURL *url = [group valueForProperty:ALAssetsGroupPropertyURL]; | ||
| DNImageFlowViewController *imageFlowViewController = [[DNImageFlowViewController alloc] initWithGroupURL:url]; | ||
| [self.navigationController pushViewController:imageFlowViewController animated:YES]; | ||
| [tableView deselectRowAtIndexPath:indexPath animated:YES]; | ||
| } | ||
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| #pragma mark - get assetGroups | ||
| - (void)loadAssetsGroupsWithTypes:(NSArray *)types completion:(void (^)(NSArray *assetsGroups))completion | ||
| { | ||
| __block NSMutableArray *assetsGroups = [NSMutableArray array]; | ||
| __block NSUInteger numberOfFinishedTypes = 0; | ||
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| for (NSNumber *type in types) { | ||
| __typeof__(self) __weak weakSelf = self; | ||
| //__weak typeof(self) weakSelf = self; | ||
| [self.assetsLibrary enumerateGroupsWithTypes:[type unsignedIntegerValue] | ||
| usingBlock:^(ALAssetsGroup *assetsGroup, BOOL *stop) | ||
| { | ||
| if (assetsGroup) { | ||
| // Filter the assets group | ||
| [assetsGroup setAssetsFilter:ALAssetsFilterFromDNImagePickerControllerFilterType([[weakSelf dnImagePickerController] filterType])]; | ||
| // Add assets group | ||
| if (assetsGroup.numberOfAssets > 0) { | ||
| // Add assets group | ||
| [assetsGroups addObject:assetsGroup]; | ||
| } | ||
| } else { | ||
| numberOfFinishedTypes++; | ||
| } | ||
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| // Check if the loading finished | ||
| if (numberOfFinishedTypes == types.count) { | ||
| //sort | ||
| NSArray *sortedAssetsGroups = [assetsGroups sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) { | ||
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| ALAssetsGroup *a = obj1; | ||
| ALAssetsGroup *b = obj2; | ||
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| NSNumber *apropertyType = [a valueForProperty:ALAssetsGroupPropertyType]; | ||
| NSNumber *bpropertyType = [b valueForProperty:ALAssetsGroupPropertyType]; | ||
| if ([apropertyType compare:bpropertyType] == NSOrderedAscending) | ||
| { | ||
| return NSOrderedDescending; | ||
| } | ||
| return NSOrderedSame; | ||
| }]; | ||
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| // Call completion block | ||
| if (completion) { | ||
| completion(sortedAssetsGroups); | ||
| } | ||
| } | ||
| } failureBlock:^(NSError *error) { | ||
| // NSLog(@"%@",error.description); | ||
| if ([ALAssetsLibrary authorizationStatus] != ALAuthorizationStatusAuthorized){ | ||
| [self showUnAuthorizedTipsView]; | ||
| } | ||
| }]; | ||
| } | ||
| } | ||
| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // | ||
| // DNAsset.h | ||
| // ImagePicker | ||
| // | ||
| // Created by DingXiao on 15/3/6. | ||
| // Copyright (c) 2015年 Dennis. All rights reserved. | ||
| // | ||
|
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| #import <Foundation/Foundation.h> | ||
| #import <CoreGraphics/CoreGraphics.h> | ||
| #import <AssetsLibrary/AssetsLibrary.h> | ||
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| @interface DNAsset : NSObject | ||
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| @property (nonatomic, strong) ALAsset *ALAsset; | ||
| @property (nonatomic, strong) NSURL *url; //ALAsset url | ||
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| - (BOOL)isEqualToAsset:(DNAsset *)asset; | ||
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| @end |
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