我有一个NewsViewController，其中新闻显示表单XML，我的问题是我创建了单独的类，称为SearchVC，我已经添加了搜索栏，在这里我想搜索所有新闻 （来自NewsViewController）。搜索结果应显示在下拉列表中，如果我单击那些搜索结果它应该重定向到NewsDetailsViewController。我不知道如何做到这一点可以帮助我解决这个问题。
这是我的NewsViewController.m
#import "NewsViewController.h"
#import "NewsTableViewCell.h"
#import "NewDetailsViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
@interface NewsViewController ()
{
NSString *temString;
NSMutableString *strTemp;
}
@end
@implementation NewsViewController
@synthesize arrImages;
@synthesize TittleOne;
@synthesize TittleTwo;
@synthesize TittleThree;
@synthesize datepicker;
@synthesize PickerContainer;
@synthesize datepickerTittle;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
#pragma mark - View Life Cycle
- (void)viewDidLoad
{
[TittleOne setFont: [UIFont fontWithName:@"GEEast-ExtraBold" size:12]];
[TittleTwo setFont: [UIFont fontWithName:@"GEEast-ExtraBold" size:10]];
[TittleThree setFont: [UIFont fontWithName:@"GEEast-ExtraBold" size:10]];
// [[UIColor redColor] set];
[datepickerTittle setFont:[UIFont fontWithName:@"GEEast-ExtraBold" size:12]];
// [datepickerTittle.textColor= [UIColor yellowColor]];
[super viewDidLoad];
self.arrTitles =[[NSMutableArray alloc] init];
self.arrDescription=[[NSMutableArray alloc]init];
self.arrImages=[[NSMutableArray alloc]init];
self.arrDate=[[NSMutableArray alloc]init];
self.arrUrls=[[NSMutableArray alloc]init];
//[self performSelectorInBackground:@selector(requestingForNews:) withObject:nil];
// dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), s^{
self.spinnerView.hidden=NO;
[self makeRequestForNews];
// self.spinnerView.stopAnimating;
//});
// Do any additional setup after loading the view.
[self imagedownloader:@"http://www.shura.bh/MediaCenter/News/"];
}
-(void)requestingForNews:(id)sender
{
[self makeRequestForNews];
}
-(void) imagedownloader : (NSString *)urlStringOfImage
{
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(queue, ^{
//downlaod image
NSURL *imageUrl = [NSURL URLWithString:urlStringOfImage];
NSData *imageData = [NSData dataWithContentsOfURL:imageUrl];
UIImage *image = [UIImage imageWithData:imageData];
dispatch_async(dispatch_get_main_queue(), ^{
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 50, 50 )];
imageView.image = image;
[self.view addSubview:imageView];
});
});
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - make request for news
-(void)makeRequestForNews
{
NSURL *url =[NSURL URLWithString:self.strNewsApi];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
//After making request the apparent thing is expecting the response that may be expected response or an Error. so create those objects and intialize them with NULL.
NSURLResponse *response = NULL;
NSError *requestError =NULL;
//Once you have response with you , Capture YOur Responce data using NsData.
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&requestError];
//Convert the respnse Data into Response String.
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
//Now We can start parsing the Data using XMl parser . you need XML parser in-order to use the below class method "dictionaryFOrXMLString".
NSError *parserError = NULL;
//XML parsing
NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:responseData];
[xmlParser setDelegate:self];
[xmlParser parse];
// NSURL *url = [NSURL URLWithString:url];
// NSData *data = [NSData dataWithContentsOfURL:url];
// UIImage *image = [UIImage imageWithData:data];
//NSDictionary *xmlDict = [XMLReader dictionaryForXMLString:responseString error:NULL];
//once you have xmlDict handy, you can pass this to the any ViewController (Like table view) to populate the Data.
}
- (void)parserDidEndDocument:(NSXMLParser *)parser {
}
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if ([elementName isEqualToString:@"ShuraNews"])
{
}
if ([elementName isEqualToString:@"PUBLISHINGPAGEIMAGE"])
{
}
strTemp=[NSMutableString new];
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
//temString =string;
[strTemp appendString:string];
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:@"TITLE"])
{
NSLog(@"temstring=== %@", strTemp);
[self.arrTitles addObject:strTemp];
}
if ([elementName isEqualToString:@"PUBLISHINGPAGECONTENT"])
{
NSLog(@"temstring=== %@", strTemp);
[self.arrDescription addObject:strTemp];
}
if ([elementName isEqualToString:@"NEWSARTICLEDATE"])
{
NSLog(@"temstring=== %@", strTemp);
[self.arrDate addObject:strTemp];
}
if ([elementName isEqualToString:@"PUBLISHINGPAGEIMAGE"])
{
NSLog(@"temstring=== %@", strTemp);
[self.arrImages addObject:strTemp];
}
if ([elementName isEqualToString:@"ShuraNews"])
{
[self.tblNews reloadData];
// self.spinnerView.hidden=YES;
}
if ([elementName isEqualToString:@"URL"])
{
[self.arrUrls addObject:strTemp];
}
}
#pragma mark - TabeView Datasource//delegate method
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.arrTitles count];
//
// NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
// [dateFormatter setTimeStyle:NSDateFormatterFullStyle];
// [dateFormatter setDateFormat:@"dd mmm yyyy"];
// [datepicker sortUsingComparator:^(id dateObje1,id dateObje2)
// {
// NSDate *date1 = [dateFormatter dateFromString:[(datepicker) dateObje1 arrDate]];
// NSDate *date2 = [dateFormatter dateFromString:[(datepicker) dateObje2 arrDate]];
// return [date2 compare:date1];
// }
// ];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView setSeparatorInset:UIEdgeInsetsZero];
static NSString *cellIdentifier=@"cellNews";
NewsTableViewCell *cell=(NewsTableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
if (cell == nil)
{
cell = [[NewsTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
// cell.NewsTableViewCell.textColor = UIColorFromRGB(0x000000);
cell.backgroundColor=[UIColor clearColor];
//SDWebImage Code for lazy loader
[cell.imgNews setImageWithURL:[NSURL URLWithString:[self.arrImages objectAtIndex:indexPath.row]] placeholderImage:[UIImage imageNamed:@"placeholder.gif"]];
}
if( [indexPath row] % 2){
cell.contentView.backgroundColor =UIColorFromRGB(0Xffffff);
}
else{
cell.contentView.backgroundColor =UIColorFromRGB (0Xdcdcdc);
}
//selectbackground color start
UIView *NewsTableViewCell = [[UIView alloc] initWithFrame:cell.frame];
NewsTableViewCell.backgroundColor = UIColorFromRGB(0Xdcdcdc);
cell.selectedBackgroundView = NewsTableViewCell; //select background colro end
cell.lblTitles.font = [UIFont fontWithName:@"GEEast-ExtraBold" size:12];
cell.lblTitles.text=[self.arrTitles objectAtIndex:indexPath.row];
cell.lblDescription.font =[UIFont fontWithName:@"GE SS Unique" size:12];
cell.lblDate.font=[UIFont fontWithName:@"GE SS Unique" size:12];
cell.lblDescription.text=[self.arrDescription objectAtIndex:indexPath.row];
cell.lblDate.text=[self.arrDate objectAtIndex:indexPath.row];
cell.lblTitles.textAlignment= NSTextAlignmentRight;
cell.lblDate.textAlignment = NSTextAlignmentRight;
cell.lblDescription.textAlignment = NSTextAlignmentRight;
//cell.imageView.image = [UIImage imageNamed:[arrImages objectAtIndex:indexPath.row]];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:[self.arrImages objectAtIndex:indexPath.row]]];
cell.imgNews.image=[UIImage imageWithData:data];
cell.imgNews.layer.borderColor = [UIColor blackColor].CGColor;
cell.imgNews.layer.borderWidth = 2.0;
[PickerContainer setHidden:YES];
if (!cell.imgNews.image)
{
cell.lblTitles.frame=CGRectMake(cell.lblTitles.frame.origin.x, cell.lblTitles.frame.origin.y, 283, cell.lblTitles.frame.size.height);
cell.lblDate.frame=CGRectMake(cell.lblDate.frame.origin.x, cell.lblDate.frame.origin.y, 286, cell.lblDate.frame.size.height);
cell.lblDescription.frame=CGRectMake(cell.lblDescription.frame.origin.x, cell.lblDescription.frame.origin.y, 281, cell.lblDescription.frame.size.height);
cell.imgNews.layer.borderColor = [UIColor blackColor].CGColor;
cell.imgNews.layer.borderWidth = 0;
}
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *dict=[[NSDictionary alloc]initWithObjectsAndKeys:[NSString stringWithFormat:@"%@",
[self.arrTitles objectAtIndex:indexPath.row]],@"title",[NSString stringWithFormat:@"%@",
[self.arrImages objectAtIndex:indexPath.row]],@"img",[NSString stringWithFormat:@"%@",
[self.arrDescription objectAtIndex:indexPath.row]],@"Des",[NSString stringWithFormat:@"%@",[self.arrUrls objectAtIndex:indexPath.row]],@"url", nil];
[self performSegueWithIdentifier:@"NewsDetailsID" sender:dict];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:@"NewsDetailsID"])
{
((NewDetailsViewController *)segue.destinationViewController).strTitle=[sender objectForKey:@"title"];
((NewDetailsViewController *)segue.destinationViewController).strDetailImage=[sender objectForKey:@"img"];
((NewDetailsViewController *)segue.destinationViewController).strDescription=[sender objectForKey:@"Des"];//strUrl
((NewDetailsViewController *)segue.destinationViewController).strUrl=[sender objectForKey:@"url"];
}
}
- (IBAction)backBtnClicked:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
@end
提前致谢。
答案 0 :(得分：0)
就搜索而言，您必须根据用户输入的关键字在NewsViewController中搜索您的数组，如果返回任何结果，则执行一个segue到您的NewsDetailsViewController这些结果将显示在哪里。要执行NewsDetailsViewController的segue，您可以使用此方法
[self performSegueWithIdentifier:@"segueIdentifier" sender:nil];
另一个建议是使用UITableViewController代替Dropdown。原因是它在SDK本身中可用，您可以使用TableView显示更多数据，而Dropdown必须是自定义的。