#import "YoungViewController.h"

  @interface YoungViewController ()<UITableViewDataSource,UITableViewDelegate> {     NSMutableArray * items; //定義開始加載的數組 }   @end   @implementation YoungViewController   - (void)viewDidLoad {     [super viewDidLoad];     items = [[NSMutableArray alloc]init]; //初始化 #pragram mark  賦值     [items addObject:@"AA"];     [items addObject:@"BB"];     [items addObject:@"CC"];     [items addObject:@"DD"];     [items addObject:@"EE"];     [items addObject:@"FF"];     [items addObject:@"GG"];     [items addObject:@"HH"];          UITableView * tableView = [[UITableView alloc]init];     tableView.frame = CGRectMake(0, 20, 320, 400);     [tableView setBackgroundView:nil];     [tableView setBackgroundColor:[UIColor grayColor]];     [tableView setDelegate:self];     [tableView setDataSource:self];     [tableView setTag:1000]; //1-100是蘋果公司預留tag值     [self.view insertSubview:tableView atIndex:0]; } -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {     int count = [items count];     return count+1; } -(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {          static NSString* AllActivitiesCellIdentifier = @"AllActivitiesCellIdentifier";     UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:AllActivitiesCellIdentifier];     if(cell==nil){         cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:AllActivitiesCellIdentifier];     }     if(indexPath.row<[items count])     {         cell.textLabel.text = [items objectAtIndex:indexPath.row];     }     else     {         cell.textLabel.text = @"Loading More";     }     return cell; } -(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {     if([indexPath row] == [items count])     {         [self performSelectorInBackground:@selector(LoadMore) withObject:nil];     } } -(void)LoadMore {     NSMutableArray *more = [[NSMutableArray alloc]init];          [more addObject:@"11"];     [more addObject:@"22"];     [more addObject:@"33"];          [self performSelectorOnMainThread:@selector(appendTableWith:) withObject:more waitUntilDone:NO]; } -(void)appendTableWith:(NSMutableArray*)data {     for(int i=0;i<[data count];i++)     {         [items addObject:[data objectAtIndex:i]];     }          NSMutableArray *insertIndexPaths = [NSMutableArray arrayWithCapacity:100];     for(int ind =0;ind<[data count];ind++)     {         NSIndexPath  *newPath =  [NSIndexPath indexPathForRow:[items indexOfObject:[data objectAtIndex:ind]] inSection:0];                  [insertIndexPaths addObject:newPath];     }     UITableView * tas = (UITableView*)[self.view viewWithTag:1000];     [tas insertRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationFade]; }     - (void)didReceiveMemoryWarning {     [super didReceiveMemoryWarning]; }   @end