我有一个搜索栏,但是当我开始输入时不起作用,应用程序不会崩溃,但搜索栏没有显示任何内容。
我的 TableViewController.h 文件:
#import <UIKit/UIKit.h>
#import "DetailController.h"
@interface TableViewController : UIViewController<UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate>
@property (strong, nonatomic) IBOutlet UITableView *myTableView;
@property (weak, nonatomic) IBOutlet UISearchBar *searchBar;
@property (weak, nonatomic) IBOutlet UINavigationItem *barra;
@property (strong,nonatomic) NSArray* jsonObject;
@property (strong,nonatomic) NSMutableArray* jsonObject2;
@property (nonatomic,strong) NSString* conexion;
@property (nonatomic,strong) NSString* titul;
- (IBAction)back:(id)sender;
@end
我的 TableViewController.m 文件
#import "TableViewController.h"
#import "CostumCell.h"
#import <SDWebImage/UIImageView+WebCache.h>
#import <QuartzCore/QuartzCore.h>
@interface TableViewController ()
@end
@implementation TableViewController
@synthesize myTableView;
@synthesize searchBar;
@synthesize barra;
@synthesize jsonObject;
@synthesize jsonObject2;
@synthesize conexion;
@synthesize titul;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
//
//load the JSON object
barra.title=titul;
[UIApplication sharedApplication].networkActivityIndicatorVisible=YES;
NSData *response = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:conexion]];
NSInputStream *stream = [[NSInputStream alloc] initWithData:response];
[stream open];
//
if(stream)
{
NSError *parseError = nil;
jsonObject = [NSJSONSerialization JSONObjectWithStream:stream options:NSJSONReadingAllowFragments error:&parseError];
jsonObject2 = [[NSMutableArray alloc]initWithArray:jsonObject];
}
//
self.myTableView.delegate=self;
self.myTableView.dataSource=self;
self.searchBar.delegate=self;
[UIApplication sharedApplication].networkActivityIndicatorVisible=NO;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [jsonObject count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString* CellIdentifier=@"Cell";
CostumCell * cell =[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(!cell){
cell=[[CostumCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.label.text = [[jsonObject objectAtIndex:indexPath.row]objectForKey:@"nombres"];
[cell.imageView setImageWithURL:[NSURL URLWithString:[[jsonObject objectAtIndex:indexPath.row]objectForKey:@"imagenes"]]placeholderImage:[UIImage imageNamed:@"Untitled-1.png"]];
[cell.imageView.layer setBorderColor: [[UIColor blackColor] CGColor]];
[cell.imageView.layer setBorderWidth: 2.0];
UIView *backView = [[UIView alloc] initWithFrame:CGRectZero];
backView.backgroundColor = [UIColor clearColor];
cell.backgroundView = backView;
UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"marcadeagua.jpg"]];
[tempImageView setFrame:self.myTableView.frame];
self.myTableView.backgroundView = tempImageView;
self.myTableView.separatorColor= [UIColor blackColor];
return cell;
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"showDetail"]) {
NSIndexPath *indexPath = [self.myTableView indexPathForSelectedRow];
DetailController *destViewController = segue.destinationViewController;
destViewController.nombre=[[jsonObject objectAtIndex:indexPath.row]objectForKey:@"nombres"];
destViewController.telefonos=[[jsonObject objectAtIndex:indexPath.row]objectForKey:@"telefonos"];
destViewController.imagen=[[jsonObject objectAtIndex:indexPath.row]objectForKey:@"imagendetalles"];
destViewController.conexion=[[jsonObject objectAtIndex:indexPath.row]objectForKey:@"conexion"];
destViewController.value=indexPath.row;
}
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
if([searchText length] == 0){
[jsonObject2 removeAllObjects];
[jsonObject2 addObjectsFromArray:jsonObject];
}else{
[jsonObject2 removeAllObjects];
for (NSDictionary *item in jsonObject) {
NSString *string = [item objectForKey:@"nombres"];
NSRange range = [string rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (range.location != NSNotFound) {
[jsonObject2 addObject:item];
}
}
}
[myTableView reloadData];
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)asearchBar{
[searchBar resignFirstResponder];
}
- (void)viewDidUnload
{
[self setMyTableView:nil];
[self setSearchBar:nil];
[self setBarra:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (IBAction)back:(id)sender {
[self dismissModalViewControllerAnimated:YES];
}
@end
我尝试过使用不同的代码,但没有任何效果。