我已经完成了这两个视频，并使用以下代码将视图控制器与父视图控制器连接：
- (IBAction)searchButtonClicked:(id)sender {
NSLog(@"It works.");
SearchViewController *searchViewControl = [self.storyboard instantiateViewControllerWithIdentifier:@"SearchControllerNav"];
[self presentViewController:searchViewControl animated:YES completion:nil];
}
这段代码确实有效，因为这是我用于其他模态视图控制器的相同格式，所以我知道这不是问题所在。
无论如何，当我点击视图控制器中的搜索按钮时，它应该弹出SearchViewController。然而，应用程序崩溃了，给了我这个错误信息：
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UITableViewController loadView] loaded the "jp7-vt-IdA-view-Jer-xW-qlD" nib but didn't get a UITableView.'
我正在使用storyboards制作这个应用程序。
我是否遗漏了什么？谢谢您提前。
另外一个问题：每当
isFiltered == YES时，我也会收到一个警告，即“指针和整数之间的比较（'BOOL *'（又名'signed char *'）和'int'）。有没有办法解决它？下面是
SearchViewController的代码：
SearchController.h
#import <UIKit/UIKit.h>
@interface SearchViewController : UITableViewController <UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate> {
}
- (IBAction)cancelButtonTapped:(id)sender;
@property (weak, nonatomic) IBOutlet UISearchBar *mySearchBar;
@property (weak, nonatomic) IBOutlet UITableView *myTableView;
@property (nonatomic, strong) NSMutableArray *itemsInCloudApp;
@property (nonatomic, strong) NSMutableArray *filteredList;
@property BOOL *isFiltered;
@end
SearchViewController.m
#import "SearchViewController.h"
@interface SearchViewController ()
@end
@implementation SearchViewController
@synthesize mySearchBar, myTableView, itemsInCloudApp, filteredList, isFiltered;
- (void)viewDidLoad
{
[super viewDidLoad];
// Set title.
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
titleLabel.text = @"Search";
titleLabel.adjustsFontSizeToFitWidth = YES;
titleLabel.clipsToBounds = YES;
titleLabel.numberOfLines = 1;
titleLabel.font = [UIFont fontWithName:@"Avenir-Medium" size:18];
titleLabel.textColor = [UIColor blackColor];
titleLabel.autoresizingMask = UIViewAutoresizingFlexibleHeight;
titleLabel.textAlignment = NSTextAlignmentCenter;
[titleLabel sizeToFit];
self.navigationItem.titleView = titleLabel;
// Alloc and init list.
itemsInCloudApp = [[NSMutableArray alloc]initWithObjects:@"http://www.apple.com/", @"http://www.trijstudios.com/", @"http://www.google.com/", @"http://www.squarespace.com/", @"http://www.youtube.com/", nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
if (isFiltered == YES) {
return [filteredList count];
} else {
return [itemsInCloudApp count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
if (isFiltered == YES) {
cell.textLabel.text = [filteredList objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [filteredList objectAtIndex:indexPath.row];;
} else {
cell.textLabel.text = [itemsInCloudApp objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [itemsInCloudApp objectAtIndex:indexPath.row];
}
return cell;
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
if (searchText.length == 0) {
// Set bollean flag
isFiltered = NO;
} else {
// Set boolean flag
isFiltered = YES;
// Alloc and init our fliteredData
filteredList = [[NSMutableArray alloc] init];
// Fast enumeration
for (NSString *name in itemsInCloudApp) {
NSRange nameRange = [name rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (nameRange.location != NSNotFound) {
[filteredList addObject:name];
}
}
}
// Reload tableView
[myTableView reloadData];
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[mySearchBar resignFirstResponder];
}
- (IBAction)cancelButtonTapped:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
@end
注意：我进行了一些编辑以适应我的需求。