如何在UITableView中添加分页。 [英] How to add pagination in UITableView.?
本文介绍了如何在UITableView中添加分页。的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我从第一页的API解析数据并将其添加到 UITableView ，现在页面可以是多个让我们说100，我也从API获得总页数。但是我将如何在tableView中为每个页面实现它并在滚动时显示指示器。看看我的代码
I parse data from API for the first page and add it to UITableView, now pages can be multiple lets say 100, I also get total number of pages from API also. but how will i implement it in tableView for every page and show indicator while scrolling. Have a look at my code
NSURL *theURL = [NSURL URLWithString:@"http://qa.networc.in:1336/api/dispatcher/rideScheduled/:1"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:theURL cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:20.0f];
//Specify method of request(Get or Post)
[theRequest setHTTPMethod:@"GET"];
//Pass some default parameter(like content-type etc.)
[theRequest setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[theRequest setValue:@"application/json; charset=UTF-8" forHTTPHeaderField:@"Content-Type"];
[theRequest addValue:token forHTTPHeaderField:@"x-access-token"];
NSURLResponse *theResponse = NULL;
NSError *theError = NULL;
NSData *responseData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&theResponse error:&theError];
if (responseData == nil)
{
return;
}
NSDictionary *dataDictionaryResponse = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&theError];
NSLog(@"url to send request= %@",theURL);
NSLog(@"%@",dataDictionaryResponse);
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest:theRequest
completionHandler:
^(NSData *data, NSURLResponse *response, NSError *error) {
NSLog(@"Response:%@ %@\n", response, error);
if(error == nil)
{
NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog(@"Data = %@",text);
}
dictionary = [[NSJSONSerialization JSONObjectWithData:data options:0 error:nil]objectForKey:@"data"];
NSArray *total = [dictionary objectForKey:@"total"];
NSLog(@"latlop %@", total);
NSArray *IDArray = [dictionary objectForKey:@"docs"];
for (NSDictionary *Dict in IDArray)
{
NSMutableDictionary *temp = [NSMutableDictionary new];
[temp setObject:[Dict objectForKey:@"_id"] forKey:@"_id"];
NSLog(@"temp %@", temp );
NSString *booknumber = [Dict objectForKey:@"bookingNumber"];
if([booknumber length] != 0)
[temp setObject:booknumber forKey:@"bookingNumber"];
NSMutableDictionary *stp1 = [Dict objectForKey:@"stop1"];
if ([[stp1 allKeys] containsObject:@"address"]) {
[temp setObject:[stp1 objectForKey:@"address"] forKey:@"address"];
];
}
NSMutableDictionary *stp2 = [Dict objectForKey:@"stop2"];
if ([[stp2 allKeys] containsObject:@"address"]) {
[temp setObject:[stp2 objectForKey:@"address"] forKey:@"address1"];
NSArray *latlongstp2 = [stp2 objectForKey:@"location"];
[temp setObject:[latlongstp2 objectAtIndex:0] forKey:@"latitude"];
[temp setObject:[latlongstp2 objectAtIndex:1] forKey:@"longitude"];
}
NSMutableDictionary *currentloc = [Dict objectForKey:@"currentLocation"];
if ([[currentloc allKeys] containsObject:@"address"]) {
[temp setObject:[currentloc objectForKey:@"address"] forKey:@"address1"];
}
[getid addObject:temp];
}
if (getid.count>0)
{
[self updateTable];
}
}];
[task resume];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1; //count of section
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [getid count];
}
- (void)tableView:(UITableView *)tableView willDisplayCell: (UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == [getid count] - 1 ) {
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
ScheduleTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
cell.BookingId.text = [[getid objectAtIndex:indexPath.row]objectForKey:@"_id"];
cell.BookingNo.text = [[getid objectAtIndex:indexPath.row]objectForKey:@"bookingNumber"];
cell.stop1.text = [[getid objectAtIndex:indexPath.row]objectForKey:@"address"];
cell.stop2.text = [[getid objectAtIndex:indexPath.row] objectForKey:@"address1"];
cell.Currentloc.text = [[getid objectAtIndex:indexPath.row] objectForKey:@"address"];
return cell;
}
推荐答案
有很多方法可以实现这类似于以下方式：
There are many way to achieve this like following way:
- 首先你需要创建一个加载的全局
NSMutableArray在TableView代表和DataSaurce。 - 现在，在您的api电话上，您需要在全局数组中添加That记录。
- 在最后一个单元格或
tableview上，您可以使用下一页URL再次调用它，具体取决于每个Call上的API和重新加载表 - 您可以在github上使用loadMore许多thirdParty库：
- First you need to create one global
NSMutableArraythat load inTableViewDelegates andDataSaurce. - Now on your api call you need to add That records in global Array.
- On last cell or the
tableviewyou can call it again with next page URL based on your API and reload table on each Call - You can use for loadMore many thirdParty library available on github:
https://github.com/OpenFibers/DragRefreshAndLoadMoreTableDemo
< a href =https://github.com/Abizern/PartialTable =nofollow noreferrer> https://github.com/Abizern/PartialTable
https://github.com/robertmryan/UITableView-Bottom-Refresh
根据您的代码：
in .h class
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
{
NSURL* nextURL;
int currentPage;
}
in .M Class
- (void)viewDidLoad {
currentPage = 1;
[self LoadData];
[super viewDidLoad];
}
-(void)LoadData
{
NSURL *theURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://qa.networc.in:1336/api/dispatcher/rideScheduled/:%d",currentPage]];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:theURL cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:20.0f];
//Specify method of request(Get or Post)
[theRequest setHTTPMethod:@"GET"];
//Pass some default parameter(like content-type etc.)
[theRequest setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[theRequest setValue:@"application/json; charset=UTF-8" forHTTPHeaderField:@"Content-Type"];
[theRequest addValue:token forHTTPHeaderField:@"x-access-token"];
NSURLResponse *theResponse = NULL;
NSError *theError = NULL;
NSData *responseData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&theResponse error:&theError];
if (responseData == nil)
{
return;
}
NSDictionary *dataDictionaryResponse = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&theError];
NSLog(@"url to send request= %@",theURL);
NSLog(@"%@",dataDictionaryResponse);
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest:theRequest
completionHandler:
^(NSData *data, NSURLResponse *response, NSError *error) {
NSLog(@"Response:%@ %@\n", response, error);
if(error == nil)
{
NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog(@"Data = %@",text);
}
currentPage ++;
dictionary = [[NSJSONSerialization JSONObjectWithData:data options:0 error:nil]objectForKey:@"data"];
NSArray *total = [dictionary objectForKey:@"total"];
NSLog(@"latlop %@", total);
[getid addObjectsFromArray:total];
[self updateTable];
}];
[task resume];
}
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