我尝试使用以下代码在epub中进行搜索，其工作原理不正确 1.表委托方法在启动时执行，因此搜索结果的默认值为0，所以我在viewdidload方法中给出了一个带有4个元素的虚拟数组。现在tableview只显示虚拟数组中的4个thode元素，当我滚动tableview时显示正确的搜索结果但仍然只显示该搜索结果中的4个元素，因为滚动时行数方法不会执行。
当我点击搜索按钮时，它会在头等课程中调用此方法
SearchResultsViewController *searchRes=[[SearchResultsViewController alloc]initWithNibName:@"SearchResultsViewController" bundle:nil];
NSString *searchQuery=[search text];
sharedManager=[Mymanager sharedManager];
sharedManager.searchQuery=searchQuery;
// UITextField *textField = [NSString stringWithFormat:@"%@",searchQuery];
// [textField setFont:[UIFont fontWithName:@"BL-Ruthika-Bold" size:15]];
[searchRes searchString:searchQuery];
[self.navigationController pushViewController:searchRes animated:YES];
然后调用searchresult类中的以下方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
NSLog(@"%d",[results count]);
if([results count]>0)
{
return [results count];
}
else
{
return [test count];
}
}
//executes only at the startup time ,so the value of results always become zero
- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
if([results count]>0) {
// cell.textLabel.adjustsFontSizeToFitWidth = YES;
hit = (SearchResult*)[results objectAtIndex:[indexPath row]];
cell.textLabel.text = [NSString stringWithFormat:@"...%@...", hit.neighboringText];
cell.detailTextLabel.text = [NSString stringWithFormat:@"Chapter %d - page %d", hit.chapterIndex, hit.pageIndex+1];
cell.textLabel.font = [UIFont fontWithName:@"Trebuchet MS" size:13];
cell.textLabel.textColor = [UIColor colorWithRed:25/255.0 green:90/255.0 blue:100/255.0 alpha:1];
cell.detailTextLabel.textColor=[UIColor colorWithRed:25/255.0 green:90/255.0 blue:100/255.0 alpha:1];
cell.detailTextLabel.font= [UIFont fontWithName:@"Trebuchet MS" size:10];
return cell;
}
else
{
cell.textLabel.text=[test objectAtIndex:indexPath.row];
return cell;
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
sharedManager=[Mymanager sharedManager];
hit = (SearchResult*)[results objectAtIndex:[indexPath row]];
sharedManager.searchFlag=YES;
sharedManager.hitPageNumber=hit.pageIndex;
sharedManager.hitChapter=hit.chapterIndex;
sharedManager.hit=hit;
// [fvc loadSpine:hit.chapterIndex atPageIndex:hit.pageIndex highlightSearchResult:hit];
[self.navigationController popViewControllerAnimated:YES];
}
- (void) searchString:(NSString*)query{
currentQuery=sharedManager.searchQuery;
[self searchString:currentQuery inChapterAtIndex:0];
[[self resultsTableView]reloadData];
}
- (void) searchString:(NSString *)query inChapterAtIndex:(int)index{
currentChapterIndex = index;
sharedManager=[Mymanager sharedManager];
Chapter* chapter = [sharedManager.spineArray objectAtIndex:index];
NSRange range = NSMakeRange(0, chapter.text.length);
NSLog(@"%@",sharedManager.searchQuery);
range = [chapter.text rangeOfString:sharedManager.searchQuery options:NSCaseInsensitiveSearch range:range locale:nil];
int hitCount=0;
while (range.location != NSNotFound) {
range = NSMakeRange(range.location+range.length, chapter.text.length-(range.location+range.length));
range = [chapter.text rangeOfString:sharedManager.searchQuery options:NSCaseInsensitiveSearch range:range locale:nil];
hitCount++;
}
if(hitCount!=0){
UIWebView* webView = [[UIWebView alloc] initWithFrame:chapter.windowSize];
[webView setDelegate:self];
NSURLRequest* urlRequest = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:chapter.spinePath]];
[webView loadRequest:urlRequest];
} else {
if((currentChapterIndex+1)<[sharedManager.spineArray count]){
[self searchString:sharedManager.searchQuery inChapterAtIndex:(currentChapterIndex+1)];
} else {
fvc.searching = NO;
}
}
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{
// NSLog(@"%@", error);
[webView release];
}
- (void) webViewDidFinishLoad:(UIWebView*)webView{
sharedManager=[Mymanager sharedManager];
NSString *varMySheet = @"var mySheet = document.styleSheets[0];";
NSString *addCSSRule = @"function addCSSRule(selector, newRule) {"
"if (mySheet.addRule) {"
"mySheet.addRule(selector, newRule);" // For Internet Explorer
"} else {"
"ruleIndex = mySheet.cssRules.length;"
"mySheet.insertRule(selector + '{' + newRule + ';}', ruleIndex);" // For Firefox, Chrome, etc.
"}"
"}";
NSString *insertRule1 = [NSString stringWithFormat:@"addCSSRule('html', 'padding: 0px; height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')", webView.frame.size.height, webView.frame.size.width];
NSString *insertRule2 = [NSString stringWithFormat:@"addCSSRule('p', 'text-align: justify;')"];
NSString *setTextSizeRule = [NSString stringWithFormat:@"addCSSRule('body', '-webkit-text-size-adjust: %d%%;')",[[sharedManager.spineArray objectAtIndex:currentChapterIndex] fontPercentSize]];
[webView stringByEvaluatingJavaScriptFromString:varMySheet];
[webView stringByEvaluatingJavaScriptFromString:addCSSRule];
[webView stringByEvaluatingJavaScriptFromString:insertRule1];
[webView stringByEvaluatingJavaScriptFromString:insertRule2];
[webView stringByEvaluatingJavaScriptFromString:setTextSizeRule];
[webView highlightAllOccurencesOfString:sharedManager.searchQuery];
NSString* foundHits = [webView stringByEvaluatingJavaScriptFromString:@"results"];
NSLog(@"%@", foundHits);
NSMutableArray* objects = [[NSMutableArray alloc] init];
NSArray* stringObjects = [foundHits componentsSeparatedByString:@";"];
for(int i=0; i<[stringObjects count]; i++){
NSArray* strObj = [[stringObjects objectAtIndex:i] componentsSeparatedByString:@","];
if([strObj count]==3){
[objects addObject:strObj];
}
}
NSArray* orderedRes = [objects sortedArrayUsingComparator:^(id obj1, id obj2){
int x1 = [[obj1 objectAtIndex:0] intValue];
int x2 = [[obj2 objectAtIndex:0] intValue];
int y1 = [[obj1 objectAtIndex:1] intValue];
int y2 = [[obj2 objectAtIndex:1] intValue];
if(y1<y2){
return NSOrderedAscending;
} else if(y1>y2){
return NSOrderedDescending;
} else {
if(x1<x2){
return NSOrderedAscending;
} else if (x1>x2){
return NSOrderedDescending;
} else {
return NSOrderedSame;
}
}
}];
[objects release];
for(int i=0; i<[orderedRes count]; i++){
NSArray* currObj = [orderedRes objectAtIndex:i];
SearchResult* searchRes = [[SearchResult alloc] initWithChapterIndex:currentChapterIndex pageIndex:([[currObj objectAtIndex:1] intValue]/webView.bounds.size.height) hitIndex:0 neighboringText:[webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"unescape('%@')", [currObj objectAtIndex:2]]] originatingQuery:sharedManager.searchQuery];
[results addObject:searchRes];
[searchRes release];
}
[[self resultsTableView]reloadData];
//Print results
for(int i=0;i<[results count];i++)
{
hit = (SearchResult*)[results objectAtIndex:i];
}
[resultsTableView performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:NO];
if((currentChapterIndex+1)<[sharedManager.spineArray count]){
[self searchString:sharedManager.searchQuery inChapterAtIndex:(currentChapterIndex+1)];
} else {
fvc.searching= NO;
}
[[self resultsTableView]reloadData];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
resultsTableView=[[UITableView alloc]init];
[resultsTableView setDelegate:self];
[resultsTableView setDataSource:self];
sharedManager=[Mymanager sharedManager];
// Do any additional setup after loading the view from its nib.
results = [[NSMutableArray alloc] init];
test=[[NSArray alloc]initWithObjects:@"one",@"one",@"one",@"one",nil];
self.navigationItem.title=@"Search ";
UIBarButtonItem *backButton = [[UIBarButtonItem alloc]
initWithTitle:@"Back"
style:UIBarButtonItemStylePlain
target:nil
action:nil];
self.navigationItem.backBarButtonItem=backButton;
[[UINavigationBar appearance] setTitleTextAttributes: @{
UITextAttributeTextColor: [UIColor whiteColor],
UITextAttributeTextShadowColor: [UIColor lightGrayColor],
UITextAttributeTextShadowOffset: [NSValue valueWithUIOffset:UIOffsetMake(0.0f, 1.0f)],
UITextAttributeFont: [UIFont fontWithName:@"Trebuchet MS" size:15.0f]
}];
[self searchString:sharedManager.searchQuery];
noMatchingSearch=[[NSArray alloc]initWithObjects:@"No Element Found", nil];
tableOfContents=[[NSMutableArray alloc]init];
for (id img in search.subviews)
{
if ([img isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
{
[img removeFromSuperview];
}
}
tableOfContents=[sharedManager.List copy];
}
- (void)viewDidUnload
{
search = nil;
[super viewDidUnload];
resultsTableView.delegate=self;
resultsTableView.dataSource=self;
// Release any retained subviews of the main view.
self.resultsTableView = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
答案 0 :(得分：2)
收到搜索结果后，
[self.tableView reloadData];
告诉表视图更新自己。我可以看到你已经在上面的大量代码中尝试了很多次。准备好搜索结果后，您只需要调用一次。另外，请确保在调用时对表视图的引用有效。
此外，如果您要在XIB文件中创建表格视图，那么您在viewDidLoad中创建的第二个未显示（添加为子视图）只会让您感到困惑，而您正在尝试重新加载错误的表视图。
如果您仍有问题，请显示类属性并删除与表视图无关的所有代码。
答案 1 :(得分：0)
resultsTableView=[[UITableView alloc]init];
尝试使用带有属性的resultsTableView，并将其设置为（非原子，强）。