iOS-加载数据的实现-MJRefresh

使用CocoaPods加载三方库：

pod 'MJRefresh'

MJRefresh类结构图：

具体实现方法和效果图：

• The drop-down refresh 01-Default

  self.tableView.header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
     //Call this Block When enter the refresh status automatically 
  }];
  或
  // Set the callback（Once you enter the refresh status，then call the action of target，that is call [self loadNewData]）
  self.tableView.header = [MJRefreshNormalHeader headerWithRefreshingTarget:self refreshingAction:@selector(loadNewData)];
  
  // Enter the refresh status immediately
  [self.tableView.header beginRefreshing];

  

• The drop-down refresh 02-Animation image

  // Set the callback（一Once you enter the refresh status，then call the action of target，that is call [self loadNewData]）
  MJRefreshGifHeader *header = [MJRefreshGifHeader headerWithRefreshingTarget:self refreshingAction:@selector(loadNewData)];
  // Set the ordinary state of animated images
  [header setImages:idleImages forState:MJRefreshStateIdle];
  // Set the pulling state of animated images（Enter the status of refreshing as soon as loosen）
  [header setImages:pullingImages forState:MJRefreshStatePulling];
  // Set the refreshing state of animated images
  [header setImages:refreshingImages forState:MJRefreshStateRefreshing];
  // Set header
  self.tableView.mj_header = header;

  

• The drop-down refresh 03-Hide the time

  // Hide the time
  header.lastUpdatedTimeLabel.hidden = YES;

  

• The drop-down refresh 04-Hide status and time

  // Hide the time
  header.lastUpdatedTimeLabel.hidden = YES;
  
  // Hide the status
  header.stateLabel.hidden = YES;

  

• The drop-down refresh 05-DIY title

  // Set title
  [header setTitle:@"Pull down to refresh" forState:MJRefreshStateIdle];
  [header setTitle:@"Release to refresh" forState:MJRefreshStatePulling];
  [header setTitle:@"Loading ..." forState:MJRefreshStateRefreshing];
  
  // Set font
  header.stateLabel.font = [UIFont systemFontOfSize:15];
  header.lastUpdatedTimeLabel.font = [UIFont systemFontOfSize:14];
  
  // Set textColor
  header.stateLabel.textColor = [UIColor redColor];
  header.lastUpdatedTimeLabel.textColor = [UIColor blueColor];

  

• The drop-down refresh 06-DIY the control of refresh

  self.tableView.mj_header = [MJDIYHeader headerWithRefreshingTarget:self refreshingAction:@selector(loadNewData)];
  // Implementation reference to MJDIYHeader.h和MJDIYHeader.m

  

• The pull to refresh 01-Default

  self.tableView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
      //Call this Block When enter the refresh status automatically
  }];
  或
  // Set the callback（Once you enter the refresh status，then call the action of target，that is call [self loadMoreData]）
  self.tableView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];

  

• The pull to refresh 02-Animation image

  // Set the callback（Once you enter the refresh status，then call the action of target，that is call [self loadMoreData]）
  MJRefreshAutoGifFooter *footer = [MJRefreshAutoGifFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];
  
  // Set the refresh image
  [footer setImages:refreshingImages forState:MJRefreshStateRefreshing];
  
  // Set footer
  self.tableView.mj_footer = footer;

  

• The pull to refresh 03-Hide the title of refresh status

  // Hide the title of refresh status
  footer.refreshingTitleHidden = YES;
  // If does have not above method，then use footer.stateLabel.hidden = YES;

  

• The pull to refresh 04-All loaded

  //Become the status of NoMoreData
  [footer noticeNoMoreData];

  

• The pull to refresh 05-DIY title

  // Set title
  [footer setTitle:@"Click or drag up to refresh" forState:MJRefreshStateIdle];
  [footer setTitle:@"Loading more ..." forState:MJRefreshStateRefreshing];
  [footer setTitle:@"No more data" forState:MJRefreshStateNoMoreData];
  
  // Set font
  footer.stateLabel.font = [UIFont systemFontOfSize:17];
  
  // Set textColor
  footer.stateLabel.textColor = [UIColor blueColor];

  

• The pull to refresh 06-Hidden After loaded

  //Hidden current control of the pull to refresh
  self.tableView.mj_footer.hidden = YES;

  

• The pull to refresh 07-Automatic back of the pull01

  self.tableView.mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];

  

• The pull to refresh 08-Automatic back of the pull02

  MJRefreshBackGifFooter *footer = [MJRefreshBackGifFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];
  
  // Set the normal state of the animated image
  [footer setImages:idleImages forState:MJRefreshStateIdle];
  //  Set the pulling state of animated images（Enter the status of refreshing as soon as loosen）
  [footer setImages:pullingImages forState:MJRefreshStatePulling];
  // Set the refreshing state of animated images
  [footer setImages:refreshingImages forState:MJRefreshStateRefreshing];
  
  // Set footer
  self.tableView.mj_footer = footer;

  

• The pull to refresh 09-DIY the control of refresh(Automatic refresh)

  self.tableView.mj_footer = [MJDIYAutoFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];
  // Implementation reference to MJDIYAutoFooter.h和MJDIYAutoFooter.m

  

• The pull to refresh 10-DIY the control of refresh(Automatic back)

  self.tableView.mj_footer = [MJDIYBackFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];
  // Implementation reference to MJDIYBackFooter.h和MJDIYBackFooter.m

  

• UICollectionView01-The pull and drop-down refresh

  // The drop-down refresh
  self.collectionView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
     //Call this Block When enter the refresh status automatically 
  }];
  
  // The pull to refresh
  self.collectionView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
     //Call this Block When enter the refresh status automatically
  }];

  

• UIWebView01-The drop-down refresh

  //Add the control of The drop-down refresh
  self.webView.scrollView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
     //Call this Block When enter the refresh status automatically
  }];

  

文章来源：https://github.com/CoderMJLee/MJRefresh