我尝试制作一个小程序，以了解有关搜索有关搜索栏的tableview的更多信息。与此同时，我在第三周尝试这样做。我在互联网上以不同的方式发现了许多例子。最多的是searchdisplaycontroller，但这种方式仅适用于viewcontroller。我更喜欢一种也适用于uiview的方式，因此我使用searchbar delegatemethod来过滤我的数据字典。通常情况下，我试着自己处理这样的事情。但这是我的克星。我真的找不到解决这个问题的方法。任何人都可以帮我解决我的代码吗？ 这里是。
#import "FilterDemoTableViewController.h"
@implementation FilterDemoTableViewController
@synthesize filteredTableData;
@synthesize searchBar;
@synthesize isFiltered;
@synthesize tableContents;
@synthesize Keys;
- (void)viewDidLoad
{
[super viewDidLoad];
searchBar.delegate = (id)self;
//-----------------------My TableView Data ------------------------------
NSArray *array1 = [[NSArray alloc]initWithObjects:@"Berlin",@"München",@"Stuttgart",nil];
NSArray *array2 = [[NSArray alloc]initWithObjects:@"Paris",@"Bordeaux",@"Marseille",@"Toulouse",nil];
NSArray *array3 = [[NSArray alloc]initWithObjects:@"London",@"Portsmouth",@"Oxford",@"York",@"Dover",nil];
NSArray *array4 = [[NSArray alloc]initWithObjects:@"Rom" ,@"Genua",@"Mailand",@"Florenz",nil];
NSArray *array5 = [[NSArray alloc]initWithObjects:@"Madrid",@"Barcelona",@"Toledo",@"Saragossa",@"Pamplona",nil];
NSDictionary *dictionary =[[NSDictionary alloc]initWithObjectsAndKeys:array1,@"Deutschland",array2,@"Frankreich",array3,@"Großbritannien",array4,@"Italien",array5,@"Spanien",nil];
self.tableContents = dictionary;
self.Keys = [self.tableContents allKeys];
//--------------------------------------------------------------------------
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (self.isFiltered) {
return [filteredTableData count];
} else {
return [Keys count];}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSArray *listData =[self.tableContents objectForKey:[self.Keys objectAtIndex:section]];
int rowCount;
if(self.isFiltered)
rowCount = filteredTableData.count;
else
rowCount = [listData count];
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
NSDictionary* sectionDictionary;
if (isFiltered) {
sectionDictionary = [filteredTableData objectAtIndex:indexPath.section];
} else {
sectionDictionary = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
}
NSArray* sectionEntries = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
cell.textLabel.text = [sectionEntries objectAtIndex:indexPath.row];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
-(void)searchBar:(UISearchBar*)searchBar textDidChange:(NSString*)text
{
if(text.length == 0)
{
isFiltered = FALSE;
}
else
{
//I think here is something wrong but i don't know what
isFiltered = true;
filteredTableData = [[NSMutableArray alloc] init];
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
for (NSDictionary *dictionary in tableContents) //dictionary read
{
NSArray *array = [dictionary objectForKey:Keys]; //section of dictionary read
[searchArray addObjectsFromArray:array];
}
for (NSString *sTemp in searchArray)
{
NSRange titleResultsRange = [sTemp rangeOfString:text options:NSCaseInsensitiveSearch];
if (titleResultsRange.length != 0)
[filteredTableData addObject:sTemp];
}
}
[self.tableView reloadData];
}
- (void)viewDidUnload{
[self setSearchBar:nil];
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
@end
答案 0 :(得分：0)
现在我发布一个完整的刷新代码。我一步一步地测试了代码的每个组件。它工作正常，搜索也很好（在UITableViewController中）。但是在这个例子中，孔代码在UIView中。原因是，通过这种方式可以创建非全尺寸的tableview和tableviews的instanzes。对于清晰的Viewcontroller来说好多了。我知道UIView没有这样的方法 reloadData ，但这是必要的。 在代码末端附近，您可以看到问题行。对于最后一步，我不知道如何解决这个问题。 [self.tableView reloadData];
#import "TableView.h"
#import <QuartzCore/QuartzCore.h>
@interface TableView ()
@end
@implementation TableView
@synthesize delegate;
@synthesize dropDownHeight;
@synthesize labelText;
@synthesize enabled;
@synthesize tableContents;
@synthesize Keys;
@synthesize searchBar;
@synthesize isFiltered;
@synthesize filteredTableData;
- (void)__show {
viewControl.alpha = 0.0f;
UIWindow *mainWindow = [[UIApplication sharedApplication] keyWindow];
[mainWindow addSubview:viewControl];
[UIView animateWithDuration:0.3f
animations:^{
viewControl.alpha = 1.0f;
}
completion:^(BOOL finished) {}];
}
- (void)__hide {
[UIView animateWithDuration:0.2f
animations:^{
viewControl.alpha = 0.0f;
}
completion:^(BOOL finished) {
[viewControl removeFromSuperview];
}];
}
- (void) setLabelText:(NSString *)_labelText{
[button setTitle:labelText forState:UIControlStateNormal];
}
- (void) setEnable:(BOOL)_enabled{
enabled = _enabled;
[button setEnabled:_enabled];
}
- (void) setArrayData:(NSArray *)_arrayData{
[table reloadData];
}
- (void) buttonPressed{
[self __show];
}
- (void) controlPressed{
//[viewControl removeFromSuperview];
[self __hide];
}
- (id) initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(10, 0, 280, 30)];
[button setTitle:@"--Auswahl--" forState:UIControlStateNormal];
[button setBackgroundImage:[UIImage imageNamed:@"combo_bg.png"] forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button addTarget:self action:@selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[button.titleLabel setFont:[UIFont fontWithName:@"Helvetica" size:14]];
[self addSubview:button];
dropDownHeight = 706;
viewControl = [[UIControl alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
[viewControl addTarget:self action:@selector(controlPressed) forControlEvents:UIControlEventTouchUpInside];
CGFloat x = self.frame.origin.x;
CGFloat y = (viewControl.frame.size.height - dropDownHeight)/2;
table = [[UITableView alloc] initWithFrame:CGRectMake(x, y, frame.size.width, dropDownHeight) style:UITableViewStyleGrouped];
table.dataSource = self;
table.delegate = self;
searchBar = [[UISearchBar alloc] init];
[searchBar sizeToFit];
searchBar.delegate = (id)self;
table.tableHeaderView = searchBar;
CALayer *layer = table.layer;
layer.masksToBounds = YES;
layer.cornerRadius = 2.0f;
layer.borderWidth = 1.0f;
[layer setBorderColor:[UIColor darkGrayColor].CGColor];
[viewControl addSubview:table];
CGAffineTransform rotateTable = CGAffineTransformMakeRotation(M_PI_2);
table.transform = rotateTable;
table.frame = CGRectMake(-2, -1, table.frame.size.width, table.frame.size.height);
UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"gradientBackground.png"]];
[tempImageView setFrame:self->table.frame];
table.backgroundView = tempImageView;
//----------------------- TableView Daten ------------------------------
NSArray *array1 = [[NSArray alloc]initWithObjects:@"Berlin",@"München",@"Stuttgart",@"Hamburg",nil];
NSArray *array2 = [[NSArray alloc]initWithObjects:@"Paris",@"Bordeaux",@"Marseille",@"Toulouse",nil];
NSArray *array3 = [[NSArray alloc]initWithObjects:@"London",@"Portsmouth",@"Oxford",@"York",@"Dover",nil];
NSArray *array4 = [[NSArray alloc]initWithObjects:@"Rom" ,@"Genua",@"Mailand",@"Florenz",nil];
NSArray *array5 = [[NSArray alloc]initWithObjects:@"Madrid",@"Barcelona",@"Toledo",@"Saragossa",@"Pamplona",nil];
NSDictionary *dictionary =[[NSDictionary alloc]initWithObjectsAndKeys:array1,@"Deutschland",array2,@"Frankreich",array3,@"Großbritannien",array4,@"Italien",array5,@"Spanien",nil];
self.tableContents = dictionary;
self.Keys = [self.tableContents allKeys];
// ---------------------------------------------------------------------
}
return self;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
if ([self tableView:tableView titleForHeaderInSection:section] != nil) {
return 40;
}
else {
return 0;
}
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
NSString *sectionTitle = [self tableView:tableView titleForHeaderInSection:section];
if (sectionTitle == nil) {
return nil;
}
// Create label with section title
UILabel *label = [[UILabel alloc] init];
label.frame = CGRectMake(20, 6, 300, 30);
label.backgroundColor = [UIColor clearColor];
label.textColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0];
label.shadowColor = [UIColor grayColor];
label.shadowOffset = CGSizeMake(0.0, 1.0);
label.font = [UIFont boldSystemFontOfSize:16];
label.text = sectionTitle;
// Create header view and add label as a subview
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
[view addSubview:label];
return view;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 60.0;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection: (NSInteger)section {
return [self.Keys objectAtIndex:section];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (self.isFiltered)
{
return 1;
} else {
return [Keys count];}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
int rowCount;
if(self.isFiltered)
{
rowCount = [filteredTableData count];
}
else
{
NSArray *listData =[self.tableContents objectForKey:[self.Keys objectAtIndex:section]];
rowCount = [listData count];
}
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *SimpleTableIdentifier = @"SimpleTableIdentifier";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: SimpleTableIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SimpleTableIdentifier];
}
if (isFiltered)
{
NSString * stadt = [filteredTableData objectAtIndex:indexPath.row];
cell.textLabel.text = stadt;
}
else
{
NSDictionary* sectionDictionary;
sectionDictionary = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
NSArray* sectionEntries = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
cell.textLabel.text = [sectionEntries objectAtIndex:indexPath.row];
}
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSArray *listData =[self.tableContents objectForKey:[self.Keys objectAtIndex:[indexPath section]]];
NSUInteger row = [indexPath row];
NSString *rowValue = [listData objectAtIndex:row];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
selectedIndex = [indexPath row];
[self __hide];
[button setTitle:[[NSString alloc] initWithFormat:rowValue] forState:UIControlStateNormal];
}
- (NSInteger) selectedIndex {
return selectedIndex;
}
-(void)searchBar:(UISearchBar*)searchBar textDidChange:(NSString*)text
{
if(text.length == 0)
{
isFiltered = FALSE;
}
else
{
isFiltered = true;
[filteredTableData removeAllObjects];
for (NSString* key in self.tableContents)
{
NSArray *staedte = [self.tableContents objectForKey:key];
for (NSString *stadt in staedte)
{
NSRange titleResultsRange = [stadt rangeOfString:text options:NSCaseInsensitiveSearch];
if (titleResultsRange.length != 0)
{
[filteredTableData addObject:stadt];
}
}
}
}
[self.tableView reloadData]; //Here is the error
}
-(void)didChangeTableViewValue:(TableView *)TableView selectedIndex:(NSInteger)selectedIndex {
}
@end