删除基于IBAction为

Question

从tableview中的行我有一个的tableView的顶部，我想改变加载到表中的数据的分段控制。分段控件有一天，一周，一个月，一年的按钮。如果你点击其中一个按钮，它应该只显示适当时间段的表格数据。现在，当我移动按钮时，为了在表格视图中添加额外的数据，但是当我从年，向后，月，到周，向后工作时，这很好。它不会从tableview中删除该行。

的.M的代码如下......我还知道我的if/else if语句是可怕的，但是当我尝试并将它放入自己的功能，它与细胞返回此方法的问题。如果有人能给我一个更好的方式来做到这一点，那将是非常棒的！

- (IBAction)segmentTimePicker:(id)sender { 
// the segmented control was clicked, handle it here 
NSLog(@"segment clicked %d", [segmentedControl selectedSegmentIndex]); 
self.tableView.reloadData; 
} 

// Customize the appearance of table view cells. 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

// A date formatter for the creation date. 
    static NSDateFormatter *dateFormatter = nil; 
if (dateFormatter == nil) { 
    dateFormatter = [[NSDateFormatter alloc] init]; 
    [dateFormatter setTimeStyle:NSDateFormatterShortStyle]; 
    [dateFormatter setDateStyle:NSDateFormatterShortStyle]; 
} 

//A number formatter for the latitude and longitude 
static NSNumberFormatter *numberFormatter = nil; 
if (numberFormatter == nil) { 
    numberFormatter = [[NSNumberFormatter alloc] init]; 
    [numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle]; 
    [numberFormatter setMaximumFractionDigits:3]; 
} 

    static NSString *CellIdentifier = @"Cell"; 

//Dequeue or create a new cell 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) { 
     cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; 
    UITableViewCellStyleSubtitle; 
    } 

//Calc how many days have passed since today, only display the right days for this segmented selector 
unsigned int unitFlags = NSMonthCalendarUnit | NSDayCalendarUnit; 
    NSCalendar *gregorian = [[NSCalendar alloc] 
          initWithCalendarIdentifier:NSGregorianCalendar]; 



// Get the event corresponding to the current index path and configure the table view cell. 
    // Configure the cell... 
Feeding *food = (Feeding *)[eventsArray objectAtIndex:indexPath.row]; 
//Check how many days have gone by for 
NSDateComponents *comps = [gregorian components:unitFlags fromDate:[food feedingDate] toDate:[NSDate date] options:0]; 
int days = [comps day]; 

//Logic to test which segment is picked, need to tie it to the segmentedControl selector 
if (segmentedControl.selectedSegmentIndex==0) { 
    if (days<=1) { 

    if([[food feedingType]isEqualToString:@"Bottle"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ oz of Formula",[food feedingAmount]]; 
    cell.textLabel.text= string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if ([[food feedingType]isEqualToString:@"Breast"]) { 
    NSString *string = [NSString stringWithFormat:@"Min on L Breast %@, Min on R Breast %@",[food feedingLBreast],[food feedingRBreast]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if([[food feedingType]isEqualToString:@"Solid"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ ounces of %@,%@d",[food feedingAmount],[food feedingSolidName],[food feedingSolidLike]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else { 
    NSLog(@"Something went wrong with this food type '%@'",[food feedingType]); 
    } 
    } 
    else { 
    NSLog(@"Do nothing since its older then a day"); 
    } 
} 

else if(segmentedControl.selectedSegmentIndex==1) { 
    if (days<=7) { 

    if([[food feedingType]isEqualToString:@"Bottle"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ oz of Formula",[food feedingAmount]]; 
    cell.textLabel.text= string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if ([[food feedingType]isEqualToString:@"Breast"]) { 
    NSString *string = [NSString stringWithFormat:@"Min on L Breast %@, Min on R Breast %@",[food feedingLBreast],[food feedingRBreast]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if([[food feedingType]isEqualToString:@"Solid"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ ounces of %@,%@d",[food feedingAmount],[food feedingSolidName],[food feedingSolidLike]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else { 
    NSLog(@"Something went wrong with this food type '%@'",[food feedingType]); 
    } 
    } 
    else { 
    NSLog(@"Do nothing since its older then a week"); 
    } 
} 
else if(segmentedControl.selectedSegmentIndex==2) { 
    if (days<=30) { 

    if([[food feedingType]isEqualToString:@"Bottle"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ oz of Formula",[food feedingAmount]]; 
    cell.textLabel.text= string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if ([[food feedingType]isEqualToString:@"Breast"]) { 
    NSString *string = [NSString stringWithFormat:@"Min on L Breast %@, Min on R Breast %@",[food feedingLBreast],[food feedingRBreast]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if([[food feedingType]isEqualToString:@"Solid"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ ounces of %@,%@d",[food feedingAmount],[food feedingSolidName],[food feedingSolidLike]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else { 
    NSLog(@"Something went wrong with this food type '%@'",[food feedingType]); 
    } 
    } 
    else { 
    NSLog(@"Do nothing since its older then a month"); 
    } 
} 
else { 
    if([[food feedingType]isEqualToString:@"Bottle"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ oz of Formula",[food feedingAmount]]; 
    cell.textLabel.text= string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if ([[food feedingType]isEqualToString:@"Breast"]) { 
    NSString *string = [NSString stringWithFormat:@"Min on L Breast %@, Min on R Breast %@",[food feedingLBreast],[food feedingRBreast]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else if([[food feedingType]isEqualToString:@"Solid"]) { 
    NSString *string = [NSString stringWithFormat:@"%@ ounces of %@,%@d",[food feedingAmount],[food feedingSolidName],[food feedingSolidLike]]; 
    cell.textLabel.text = string; 
    cell.detailTextLabel.text = [dateFormatter stringFromDate:[food feedingDate]]; 
    } 
    else { 
    NSLog(@"Something went wrong with this food type '%@'",[food feedingType]); 
    } 
} 



    return cell; 
} 

Answer 1

我想帮忙，但很难不看到所有的UITableViewDataSource方法。你可以发布你的实施tableView:numberOfRowsInSection:？