将记录加载到TableView - （更多按钮） [英] Loading records to a TableView - (More button)

问题描述

我有100个记录要显示在表格上。但是我将只显示10条记录，当用户点击最后一行（这将有一个按钮，将说明加载下10个记录）表将行接下来的10条记录。

I have like 100 records to display on a table. But i will be only displaying 10 records, and when the user clicks the last row (Which will have a button that will say load the next 10 records) the table will row the next 10 records.

我已成功在最后一个单元格上显示更多按钮。但我不知道如何一次显示10个记录。我的代码到此为止;

I have displayed the more button on the last cell successfully. But i don't know how to display 10 records at a time. My code so far;

ViewDidLoad

self.arrayThatContainsAllHundredRecords= [NSArray arrayWithArray:hundredRecordsArray];

[self performSelector:@selector(addTheTableFooter:) withObject:nil afterDelay:0.5]; 

addTheTableFooter

UIView* footer = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 30)];

[footer addSubview:moreButton]; // i have also added an event to the button click see below, and i have not shown it here.

self.tableView.tableFooterView =footer;

[self.mainWindow removeFromSuperview];

[self.tableView reloadData];

上面将显示更多显示所有 100 记录。

The above would Display the More button after displaying all 100 records.

moreButtonClickAction b $ b

-(void)moreButtonClickAction {
NSLog(@"Suppose to load the next 10 records");
}

numberOfRowsInSection

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    return [self.arrayThatContainsAllHundredRecords count];
}

我需要一种方法来编辑此代码，所以我将只显示10条记录，并在用户单击更多按钮时显示下一个10。 （现在总记录应为20 - （由于点击更多按钮，所以前10个记录和10个记录））

I need a way to edit this code, so i will only display 10 records at a time, and display the next 10 when the user clicks the more button. (Now the total records should be 20 - (previous 10 + the 10 records as a result of clicking the more button ))

注意：我将下载所有100条记录并将其保存在 viewDidLoad 方法中的 self.arrayThatContainsAllHundredRecords 。

NOTE: I will be downloading all 100 records and saving it in self.arrayThatContainsAllHundredRecords in the viewDidLoad method.

我相信我必须在执行 [self.tableView reloadData]; 之前进行一些更改，告诉加载10条记录。

I believe that i have to make some change before executing [self.tableView reloadData];, as in tell to load 10 records.

好吧，假如我只有53条记录。然后用户将点击更多按钮5次，在第6个实例上，表应该只显示3个记录。如何在tableview中处理：numberOfRowsInSection：？

Well, say if i only had 53 records. Then the user will click the more button 5 times and on the 6th instance, the table should display only 3 records. How can this be handled in the tableview:numberOfRowsInSection: ?

推荐答案

tableView：numberOfRowsInSection：是确定将显示多少行的方法，因此第一步将是更改。在视图控制器中还需要一个属性来跟踪应该显示多少行。类似这样：

tableView:numberOfRowsInSection: is the method that determines how many rows will be shown, so the first step will be to change that. You also need a property in your view controller to keep track of how many rows should be visible. Something like this:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.numberOfRowsVisible;
}

当点击更多按钮时，必须增加该数字并重新加载tableView数据。

And when the more button is clicked, you have to increase that number and reload the tableView data.

-(void)moreButtonClickAction {
    if (self.numberOfRowsVisible < self.maxNumberOfRows) 
        self.numberOfRowsVisible = MIN(self.numberOfRowsVisible + 10, self.maxRows);
    [self.tableView reloadData];
}

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