1 // HVWHomeViewController.m 2 - (void)viewDidLoad { 3 [super viewDidLoad]; 4 5 self.tableView.delegate = self; 6 7 // 设置导航栏 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 // 开启的时候自动进入刷新状态34 [refreshControl beginRefreshing];35 // 加载微博数据36 [self refreshLatestWeibo:refreshControl];37 }38 39 /** 刷新最新微博数据 */40 - (void) refreshLatestWeibo:(UIRefreshControl *) refreshControl {41 // 把最新的微博数据加到原来的微博前面42 43 // 创建AFNetworking的http操作中管理器44 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];45 46 // 设置参数47 NSMutableDictionary *param = [NSMutableDictionary dictionary];48 param[@"access_token"] = [HVWAccountInfoTool accountInfo].access_token;49 50 /** 若指定此参数,则返回ID比since_id大的微博(即比since_id时间晚的微博),默认为0。*/51 HVWStatus *firstStatus = [self.statuses firstObject];52 if (firstStatus) {53 param[@"since_id"] = firstStatus.idstr;54 }55 56 // 发送请求57 [manager GET:@"https://api.weibo.com/2/statuses/home_timeline.json" parameters:param success:^(AFHTTPRequestOperation *operation, NSDictionary *responSEObject) {58 // HVWLog(@"获取微博数据成功-------%@", responseObject);59 60 // 保存数据到内存61 NSArray *dataArray = responseObject[@"statuses"];62 63 // 得到新微博数据64 // 使用MJExtension直接进行字典-模型转换65 NSArray *newStatus = [HVWStatus objectArrayWithKeyValuesArray:dataArray];66 67 // 插入到微博数据数组的最前面68 NSRange newWeiboRange = NSMakeRange(0, newStatus.count);69 NSIndexSet *newWeiboIndexSet = [NSIndexSet indexSetWithIndexesInRange:newWeiboRange];70 [self.statuses insertObjects:newStatus atIndexes:newWeiboIndexSet];71 72 // 刷新数据73 [self.tableView reloadData];74 } failure:^(AFHTTPRequestOperation *operation, NSError *error) {75 HVWLog(@"获取微博数据失败------%@", error);76 }];77 78 // 缩回刷新器79 [refreshControl endRefreshing];80 }
1 /** 弹出微博更新提示框 */ 2 - (void) showRefreshIndicator:(int) refreshCount { 3 // 创建UILabel 4 UILabel *refreshIndicatorLabel = [[UILabel alloc] init]; 5 refreshIndicatorLabel.textAlignment = NSTextAlignmentCenter; 6 7 // 设置文本 8 refreshIndicatorLabel.text = [NSString stringWithFormat:@"更新了%d条微博", refreshCount]; 9 10 // 设置背景11 refreshIndicatorLabel.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"timeline_new_status_background"]];12 13 // 设置位置尺寸14 refreshIndicatorLabel.width = self.navigationController.view.width;15 refreshIndicatorLabel.height = 35;16 refreshIndicatorLabel.x = 0;17 // 因为一开始是藏在导航栏上的,所以要减去自身的高度18 refreshIndicatorLabel.y = [UIapplication sharedApplication].statusBarFrame.size.height + self.navigationController.navigationBar.height - refreshIndicatorLabel.height;19 20 // 添加到导航控制器view,要加载导航器的下面21 [self.navigationController.view insertSubview:refreshIndicatorLabel belowSubview:self.navigationController.navigationBar];22 23 // 使用动画弹出24 [UIView animateWithDuration:1.0 animations:^{25 // 使用更改transform来实现26 refreshIndicatorLabel.transform = CGAffineTransformMakeTranslation(0, refreshIndicatorLabel.height);27 } completion:^(BOOL finished) {28 // 弹出完毕后,再使用动画缩回29 [UIView animateWithDuration:1.0 delay:1.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{30 // 恢复位置31 refreshIndicatorLabel.transform = CGAffineTransformIdentity;32 } completion:^(BOOL finished) {33 // 从导航view删除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 /** 加载更多微博文本 */14 @property(nonatomic, strong) UILabel *label;15 16 /** 加载中活动指示器 */17 @property(nonatomic, strong) UIActivityIndicatorView *actIndicator;18 19 @end20 21 @implementation HVWLoadMoreWeiboFooterView22 23 - (instancetype)initWithFrame:(CGRect)frame {24 self = [super initWithFrame:frame];25 26 self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"timeline_new_status_background"]];27 28 // 设置加载文本29 UILabel *label = [[UILabel alloc] init];30 label.textAlignment = NSTextAlignmentCenter;31 label.text = @"上拉加载更多微博";32 self.label = label;33 [self addSubview:label];34 35 // 设置加载活动指示器36 // 不同类型的活动指示器大小是不一样的,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 /** 设置位置尺寸 */45 - (void)layoutSubviews {46 [super layoutSubviews];47 48 // 设置本身frame49 self.width = [UIScreen mainScreen].bounds.size.width;50 self.height = 35;51 52 // 设置文本frame53 self.label.frame = self.bounds;54 55 // 设置活动指示器frame56 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 // 开启的时候自动进入刷新状态14 [refreshControl beginRefreshing];15 // 加载微博数据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 // 没有微博数据的时候,不需要显示“加载更多微博”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 : UIView12 13 /** 是否正在刷新 */14 @property(nonatomic, assign, getter=isRefreshing) BOOL refreshing;15 16 /** 开始刷新 */17 - (void) beginRefresh;18 /** 停止刷新 */19 - (void) endRefresh;20 21 @end22 23 //24 // HVWLoadMoreWeiboFooterView.m25 // HVWWeibo26 //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 /** 加载更多微博文本 */36 @property(nonatomic, strong) UILabel *label;37 38 /** 加载中活动指示器 */39 @property(nonatomic, strong) UIActivityIndicatorView *actIndicator;40 41 @end42 43 @implementation HVWLoadMoreWeiboFooterView44 45 - (instancetype)initWithFrame:(CGRect)frame {46 self = [super initWithFrame:frame];47 48 self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"timeline_new_status_background"]];49 50 // 设置加载文本51 UILabel *label = [[UILabel alloc] init];52 label.textAlignment = NSTextAlignmentCenter;53 label.text = @"上拉加载更多微博";54 self.label = label;55 [self addSubview:label];56 57 // 设置加载活动指示器58 // 不同类型的活动指示器大小是不一样的,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 /** 设置位置尺寸 */67 - (void)layoutSubviews {68 [super layoutSubviews];69 70 // 设置本身frame71 self.width = [UIScreen mainScreen].bounds.size.width;72 self.height = 35;73 74 // 设置文本frame75 self.label.frame = self.bounds;76 77 // 设置活动指示器frame78 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 /** 开始刷新 */84 - (void) beginRefresh {85 self.label.text = @"正在努力加载更多微博...";86 [self.actIndicator startAnimating];87 self.refreshing = YES;88 }89 90 /** 停止刷新 */91 - (void) endRefresh {92 self.label.text = @"上拉加载更多微博";93 [self.actIndicator stopAnimating];94 self.refreshing = NO;95 }96 97 @end
1 // HVWHomeViewController.m 2 /** 加载更多(旧)微博 */ 3 - (void) loadMoreWeiboData { 4 // 把更多的微博数据加到原来的微博后面 5 6 // 创建AFNetworking的http操作中管理器 7 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; 8 9 // 设置参数10 NSMutableDictionary *param = [NSMutableDictionary dictionary];11 param[@"access_token"] = [HVWAccountInfoTool accountInfo].access_token;12 13 /** 若指定此参数,则返回ID小于或等于max_id的微博,默认为0。*/14 HVWStatus *lastStatus = [self.statuses lastObject];15 if (lastStatus) {16 param[@"max_id"] = @([lastStatus.idstr longLongValue] - 1);17 }18 19 // 发送请求20 [manager GET:@"https://api.weibo.com/2/statuses/home_timeline.json" parameters:param success:^(AFHTTPRequestOperation *operation, NSDictionary *responseObject) {21 // HVWLog(@"获取微博数据成功-------%@", responseObject);22 23 // 保存数据到内存24 NSArray *dataArray = responseObject[@"statuses"];25 26 // 得到新微博数据27 // 使用MJExtension直接进行字典-模型转换28 NSArray *newStatus = [HVWStatus objectArrayWithKeyValuesArray:dataArray];29 30 // 插入到微博数据数组的后面31 [self.statuses addObjectsFromArray:newStatus];32 33 // 刷新数据34 [self.tableView reloadData];35 } failure:^(AFHTTPRequestOperation *operation, NSError *error) {36 HVWLog(@"获取微博数据失败------%@", error);37 }];38 39 [self.loadMoreFooter endRefresh];40 }41 42 #pragma mark - UIScrollViewDelegate43 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {44 // 如果正在加载中,不用重复加载45 if (self.loadMoreFooter.isRefreshing) return;46 47 // 滚动时,scrollView处于屏幕顶部下方的内容长度48 CGFloat scrollingDelta = scrollView.contentSize.height - scrollView.contentOffset.y;49 // 当scrollView向上滚栋到刚好露出“上拉刷新”控件时,scrollView处于屏幕下方的内容长度50 CGFloat scrollViewHeighWithFooter = self.tableView.height - self.tabBarController.tabBar.height - self.loadMoreFooter.height;51 52 // 当向上滚动至scrollView能够显示的内容少于刚好露出“上拉刷新”控件时显示的内容,证明“上拉刷新”控件已经完全露出,可以刷新53 if (scrollingDelta < scrollViewHeighWithFooter) {54 [self.loadMoreFooter beginRefresh];55 [self loadMoreWeiboData];56 }57 }
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