1 // HVWHomeViewController.m 2 - (void)viewDidLoad { 3 [super viewDidLoad]; 4 5 self.tableView.delegate = self; 6 7 // 設置導航欄 8 [self setupNavigationBar]; 9 10 // 添加刷新器 11 [self addRefresh]; 12 } 13 14 /** 初始化status */ 15 - (NSMutableArray *)statuses { 16 if (nil == _statuses) { 17 _statuses = [NSMutableArray array]; 18 } 19 return _statuses; 20 } 21 22 /** 添加刷新器 */ 23 - (void) addRefresh { 24 // 下拉刷新最新微博 25 // 添加刷新控件 26 UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init]; 27 self.refreshControl = refreshControl; 28 [self.view addSubview:refreshControl]; 29 30 // 刷新控件下拉事件 31 [refreshControl addTarget:self action:@selector(refreshLatestWeibo:) forControlEvents:UIControlEventValueChanged]; 32 33 // 開啓的時候自動進入刷新狀態 34 [refreshControl beginRefreshing]; 35 // 加載微博數據 36 [self refreshLatestWeibo:refreshControl]; 37 } 38 39 /** 刷新最新微博數據 */ 40 - (void) refreshLatestWeibo:(UIRefreshControl *) refreshControl { 41 // 把最新的微博數據加到原來的微博前面 42 43 // 建立AFNetworking的http操做中管理器 44 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; 45 46 // 設置參數 47 NSMutableDictionary *param = [NSMutableDictionary dictionary]; 48 param[@"access_token"] = [HVWAccountInfoTool accountInfo].access_token; 49 50 /** 若指定此參數,則返回ID比since_id大的微博(即比since_id時間晚的微博),默認爲0。*/ 51 HVWStatus *firstStatus = [self.statuses firstObject]; 52 if (firstStatus) { 53 param[@"since_id"] = firstStatus.idstr; 54 } 55 56 // 發送請求 57 [manager GET:@"https://api.weibo.com/2/statuses/home_timeline.json" parameters:param success:^(AFHTTPRequestOperation *operation, NSDictionary *responseObject) { 58 // HVWLog(@"獲取微博數據成功-------%@", responseObject); 59 60 // 保存數據到內存 61 NSArray *dataArray = responseObject[@"statuses"]; 62 63 // 獲得新微博數據 64 // 使用MJExtension直接進行字典-模型轉換 65 NSArray *newStatus = [HVWStatus objectArrayWithKeyValuesArray:dataArray]; 66 67 // 插入到微博數據數組的最前面 68 NSRange newWeiboRange = NSMakeRange(0, newStatus.count); 69 NSIndexSet *newWeiboIndexSet = [NSIndexSet indexSetWithIndexesInRange:newWeiboRange]; 70 [self.statuses insertObjects:newStatus atIndexes:newWeiboIndexSet]; 71 72 // 刷新數據 73 [self.tableView reloadData]; 74 } failure:^(AFHTTPRequestOperation *operation, NSError *error) { 75 HVWLog(@"獲取微博數據失敗------%@", error); 76 }]; 77 78 // 縮回刷新器 79 [refreshControl endRefreshing]; 80 }
1 /** 彈出微博更新提示框 */ 2 - (void) showRefreshIndicator:(int) refreshCount { 3 // 建立UILabel 4 UILabel *refreshIndicatorLabel = [[UILabel alloc] init]; 5 refreshIndicatorLabel.textAlignment = NSTextAlignmentCenter; 6 7 // 設置文本 8 refreshIndicatorLabel.text = [NSString stringWithFormat:@"更新了%d條微博", refreshCount]; 9 10 // 設置背景 11 refreshIndicatorLabel.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"timeline_new_status_background"]]; 12 13 // 設置位置尺寸 14 refreshIndicatorLabel.width = self.navigationController.view.width; 15 refreshIndicatorLabel.height = 35; 16 refreshIndicatorLabel.x = 0; 17 // 由於一開始是藏在導航欄上的,因此要減去自身的高度 18 refreshIndicatorLabel.y = [UIApplication sharedApplication].statusBarFrame.size.height + self.navigationController.navigationBar.height - refreshIndicatorLabel.height; 19 20 // 添加到導航控制器view,要加載導航器的下面 21 [self.navigationController.view insertSubview:refreshIndicatorLabel belowSubview:self.navigationController.navigationBar]; 22 23 // 使用動畫彈出 24 [UIView animateWithDuration:1.0 animations:^{ 25 // 使用更改transform來實現 26 refreshIndicatorLabel.transform = CGAffineTransformMakeTranslation(0, refreshIndicatorLabel.height); 27 } completion:^(BOOL finished) { 28 // 彈出完畢後,再使用動畫縮回 29 [UIView animateWithDuration:1.0 delay:1.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{ 30 // 恢復位置 31 refreshIndicatorLabel.transform = CGAffineTransformIdentity; 32 } completion:^(BOOL finished) { 33 // 從導航view刪除 34 [refreshIndicatorLabel removeFromSuperview]; 35 }]; 36 }]; 37 }
1 // 2 // HVWLoadMoreWeiboFooterView.m 3 // HVWWeibo 4 // 5 // Created by hellovoidworld on 15/2/6. 6 // Copyright (c) 2015年 hellovoidworld. All rights reserved. 7 // 8 9 #import "HVWLoadMoreWeiboFooterView.h" 10 11 @interface HVWLoadMoreWeiboFooterView() 12 13 /** 加載更多微博文本 */ 14 @property(nonatomic, strong) UILabel *label; 15 16 /** 加載中活動指示器 */ 17 @property(nonatomic, strong) UIActivityIndicatorView *actIndicator; 18 19 @end 20 21 @implementation HVWLoadMoreWeiboFooterView 22 23 - (instancetype)initWithFrame:(CGRect)frame { 24 self = [super initWithFrame:frame]; 25 26 self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"timeline_new_status_background"]]; 27 28 // 設置加載文本 29 UILabel *label = [[UILabel alloc] init]; 30 label.textAlignment = NSTextAlignmentCenter; 31 label.text = @"上拉加載更多微博"; 32 self.label = label; 33 [self addSubview:label]; 34 35 // 設置加載活動指示器 36 // 不一樣類型的活動指示器大小是不同的,要注意 37 UIActivityIndicatorView *actIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]; 38 self.actIndicator = actIndicator; 39 [self addSubview:actIndicator]; 40 41 return self; 42 } 43 44 /** 設置位置尺寸 */ 45 - (void)layoutSubviews { 46 [super layoutSubviews]; 47 48 // 設置自己frame 49 self.width = [UIScreen mainScreen].bounds.size.width; 50 self.height = 35; 51 52 // 設置文本frame 53 self.label.frame = self.bounds; 54 55 // 設置活動指示器frame 56 CGFloat marginX = 50; 57 self.actIndicator.x = self.width - self.actIndicator.width - marginX; 58 self.actIndicator.y = (self.height - self.actIndicator.height) * 0.5; 59 } 60 61 @end
1 // HVWHomeViewController.m 2 /** 添加刷新器 */ 3 - (void) addRefresh { 4 // 下拉刷新最新微博 5 // 添加刷新控件 6 UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init]; 7 self.refreshControl = refreshControl; 8 [self.view addSubview:refreshControl]; 9 10 // 刷新控件下拉事件 11 [refreshControl addTarget:self action:@selector(refreshLatestWeibo:) forControlEvents:UIControlEventValueChanged]; 12 13 // 開啓的時候自動進入刷新狀態 14 [refreshControl beginRefreshing]; 15 // 加載微博數據 16 [self refreshLatestWeibo:refreshControl]; 17 18 // 添加上拉刷新器 19 HVWLoadMoreWeiboFooterView *loadMoreFooter = [[HVWLoadMoreWeiboFooterView alloc] init]; 20 self.loadMoreFooter = loadMoreFooter; 21 self.tableView.tableFooterView = loadMoreFooter; 22 23 } 24 25 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 26 // 沒有微博數據的時候,不須要顯示「加載更多微博」控件 27 self.loadMoreFooter.hidden = self.statuses.count==0?YES:NO; 28 29 return self.statuses.count; 30 }
1 // 2 // HVWLoadMoreWeiboFooterView.h 3 // HVWWeibo 4 // 5 // Created by hellovoidworld on 15/2/6. 6 // Copyright (c) 2015年 hellovoidworld. All rights reserved. 7 // 8 9 #import <UIKit/UIKit.h> 10 11 @interface HVWLoadMoreWeiboFooterView : UIView 12 13 /** 是否正在刷新 */ 14 @property(nonatomic, assign, getter=isRefreshing) BOOL refreshing; 15 16 /** 開始刷新 */ 17 - (void) beginRefresh; 18 /** 中止刷新 */ 19 - (void) endRefresh; 20 21 @end 22 23 // 24 // HVWLoadMoreWeiboFooterView.m 25 // HVWWeibo 26 // 27 // Created by hellovoidworld on 15/2/6. 28 // Copyright (c) 2015年 hellovoidworld. All rights reserved. 29 // 30 31 #import "HVWLoadMoreWeiboFooterView.h" 32 33 @interface HVWLoadMoreWeiboFooterView() 34 35 /** 加載更多微博文本 */ 36 @property(nonatomic, strong) UILabel *label; 37 38 /** 加載中活動指示器 */ 39 @property(nonatomic, strong) UIActivityIndicatorView *actIndicator; 40 41 @end 42 43 @implementation HVWLoadMoreWeiboFooterView 44 45 - (instancetype)initWithFrame:(CGRect)frame { 46 self = [super initWithFrame:frame]; 47 48 self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"timeline_new_status_background"]]; 49 50 // 設置加載文本 51 UILabel *label = [[UILabel alloc] init]; 52 label.textAlignment = NSTextAlignmentCenter; 53 label.text = @"上拉加載更多微博"; 54 self.label = label; 55 [self addSubview:label]; 56 57 // 設置加載活動指示器 58 // 不一樣類型的活動指示器大小是不同的,要注意 59 UIActivityIndicatorView *actIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]; 60 self.actIndicator = actIndicator; 61 [self addSubview:actIndicator]; 62 63 return self; 64 } 65 66 /** 設置位置尺寸 */ 67 - (void)layoutSubviews { 68 [super layoutSubviews]; 69 70 // 設置自己frame 71 self.width = [UIScreen mainScreen].bounds.size.width; 72 self.height = 35; 73 74 // 設置文本frame 75 self.label.frame = self.bounds; 76 77 // 設置活動指示器frame 78 CGFloat marginX = 50; 79 self.actIndicator.x = self.width - self.actIndicator.width - marginX; 80 self.actIndicator.y = (self.height - self.actIndicator.height) * 0.5; 81 } 82 83 /** 開始刷新 */ 84 - (void) beginRefresh { 85 self.label.text = @"正在努力加載更多微博..."; 86 [self.actIndicator startAnimating]; 87 self.refreshing = YES; 88 } 89 90 /** 中止刷新 */ 91 - (void) endRefresh { 92 self.label.text = @"上拉加載更多微博"; 93 [self.actIndicator stopAnimating]; 94 self.refreshing = NO; 95 } 96 97 @end
1 // HVWHomeViewController.m 2 /** 加載更多(舊)微博 */ 3 - (void) loadMoreWeiboData { 4 // 把更多的微博數據加到原來的微博後面 5 6 // 建立AFNetworking的http操做中管理器 7 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; 8 9 // 設置參數 10 NSMutableDictionary *param = [NSMutableDictionary dictionary]; 11 param[@"access_token"] = [HVWAccountInfoTool accountInfo].access_token; 12 13 /** 若指定此參數,則返回ID小於或等於max_id的微博,默認爲0。*/ 14 HVWStatus *lastStatus = [self.statuses lastObject]; 15 if (lastStatus) { 16 param[@"max_id"] = @([lastStatus.idstr longLongValue] - 1); 17 } 18 19 // 發送請求 20 [manager GET:@"https://api.weibo.com/2/statuses/home_timeline.json" parameters:param success:^(AFHTTPRequestOperation *operation, NSDictionary *responseObject) { 21 // HVWLog(@"獲取微博數據成功-------%@", responseObject); 22 23 // 保存數據到內存 24 NSArray *dataArray = responseObject[@"statuses"]; 25 26 // 獲得新微博數據 27 // 使用MJExtension直接進行字典-模型轉換 28 NSArray *newStatus = [HVWStatus objectArrayWithKeyValuesArray:dataArray]; 29 30 // 插入到微博數據數組的後面 31 [self.statuses addObjectsFromArray:newStatus]; 32 33 // 刷新數據 34 [self.tableView reloadData]; 35 } failure:^(AFHTTPRequestOperation *operation, NSError *error) { 36 HVWLog(@"獲取微博數據失敗------%@", error); 37 }]; 38 39 [self.loadMoreFooter endRefresh]; 40 } 41 42 #pragma mark - UIScrollViewDelegate 43 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate { 44 // 若是正在加載中,不用重複加載 45 if (self.loadMoreFooter.isRefreshing) return; 46 47 // 滾動時,scrollView處於屏幕頂部下方的內容長度 48 CGFloat scrollingDelta = scrollView.contentSize.height - scrollView.contentOffset.y; 49 // 當scrollView向上滾棟到恰好露出「上拉刷新」控件時,scrollView處於屏幕下方的內容長度 50 CGFloat scrollViewHeighWithFooter = self.tableView.height - self.tabBarController.tabBar.height - self.loadMoreFooter.height; 51 52 // 當向上滾動至scrollView可以顯示的內容少於恰好露出「上拉刷新」控件時顯示的內容,證實「上拉刷新」控件已經徹底露出,能夠刷新 53 if (scrollingDelta < scrollViewHeighWithFooter) { 54 [self.loadMoreFooter beginRefresh]; 55 [self loadMoreWeiboData]; 56 } 57 }