-(NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath {
 return @"删除";
}

-(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{
  return UITableViewCellEditingStyleDelete; 
}

- (void)tableView:(UITableView*)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath*)indexPath {
 if (editingStyle == UITableViewCellEditingStyleDelete) {
  [self.dataArray removeObjectAtIndex: indexPath.row];
  [self.tableView deleteRowsAtIndexPaths:[NSMutableArray arrayWithObject:indexPath]
        withRowAnimation:UITableViewRowAnimationFade];
  [self.tableView reloadData];

 }
}

  [_tableView setEditing:YES animated:YES];

-(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
  return UITableViewCellEditingStyleDelete|UITableViewCellEditingStyleInsert;
}

 for (int i = 0; i< self.dataArray.count; i++) {
   NSIndexPath *indexPath = [NSIndexPath indexPathForItem:i inSection:0];
   [_tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionTop];
  }

  if (self.deleteArray.count >0) {
   [self.deleteArray removeAllObjects];
  }
  [self.deleteArray addObjectsFromArray:self.dataArray];

  [btn setTitle:@"取消" forState:UIControlStateNormal];

 for (int i = 0; i< self.dataArray.count; i++) {
   NSIndexPath *indexPath = [NSIndexPath indexPathForItem:i inSection:0];
   [_tableView deselectRowAtIndexPath:indexPath animated:NO];

  }

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

 if (self.btn.selected) {
   NSLog(@"选中");
  [self.deleteArray addObject:[self.dataArray objectAtIndex:indexPath.row]];

 }else{
  NSLog(@"跳转下一页");
 }
}

- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath {

 if (self.btn.selected) {
  NSLog(@"撤销");
  [self.deleteArray removeObject:[self.dataArray objectAtIndex:indexPath.row]];

 }else{
  NSLog(@"取消跳转");
 }

}

 [self.contentView addSubview:self.label];