IPhone Dev Notes - 5 - 简单的表视图-优快云博客

本文通过多个示例展示了如何使用 iOS 中的 UITableView 控件进行各种操作，包括初始化数据源、配置单元格、实现代理方法等，为开发者提供了丰富的代码实践案例。

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// test10ViewController.h

// test10

// Created by lily bear on 12-2-13.

#import<UIKit/UIKit.h>

@interface test10ViewController :UIViewController <UITableViewDelegate,UITableViewDataSource>{

NSArray *listData;

}

@property (nonatomic,retain)NSArray *listData;

@end

// test10ViewController.m

// test10

// Created by lily bear on 12-2-13.

#import"test10ViewController.h"

@implementation test10ViewController

@synthesize listData;

- (void)dealloc

{

[listDatarelease];

[superdealloc];

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[superdidReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

NSArray *array = [[NSArrayalloc]initWithObjects:@"Sleepy",@"Sneezy",@"Bashful",@"Happy",@"Doc",@"Grumpy",@"Dopey",@"Thorin",@"Dorin",@"Nori",@"Ori",@"Balin",@"Dwalin",@"Fili",@"Kili",@"Oin",@"Gloin",@"Bifur",@"Bofur",@"Bombur",nil];

self.listData = array;

[array release];

[superviewDidLoad];

}

- (void)viewDidUnload

{

[superviewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

self.listData = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark -

#pragma mark Table View Data Source Methods

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

return [self.listDatacount];

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *SimpleTableIdentifier =@"SimpleTableIdentifier";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SimpleTableIdentifier];

if(cell == nil){

cell = [[[UITableViewCellalloc]initWithStyle:UITableViewCellStyleDefaultreuseIdentifier: SimpleTableIdentifier]autorelease];

}

UIImage *image = [UIImage imageNamed:@"star.png"];

cell.imageView.image = image;

NSUInteger row = [indexPath row];

cell.textLabel.text = [listDataobjectAtIndex:row];

cell.textLabel.font = [UIFont boldSystemFontOfSize:50];

if(row < 7)

cell.detailTextLabel.text =@"Mr.Disney";

else

cell.detailTextLabel.text =@"Mr.Tolkien";

return cell;

}

#pragma mark -

#pragma mark Table Delegate Methods

- (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath{ NSUInteger row = [indexPath row];

return row;

}*/

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

NSUInteger row = [indexPath row];

NSString *rowValue = [listData objectAtIndex:row];

NSString *message = [[NSString alloc] initWithFormat:@"You selected %@", rowValue];

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"Row Selected!"message:messagedelegate:nilcancelButtonTitle:@"Yes, I Did"otherButtonTitles:nil];

[alert show];

[message release];

[alert release];

[tableViewdeselectRowAtIndexPath:indexPathanimated:YES];

}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

return 70;

}

@end

// test11ViewController.h

// test11

// Created by lily bear on 12-2-14.

#import<UIKit/UIKit.h>

#define kNameValueTag1

#define KColorValueTag2

@interface test11ViewController :UIViewController <UITableViewDataSource,UITableViewDataSource>{

NSArray *computers;

}

@property (nonatomic,retain) NSArray *computers;

@end

// test11ViewController.m

// test11

// Created by lily bear on 12-2-14.

#import"test11ViewController.h"

@implementation test11ViewController

@synthesize computers;

- (void)dealloc

{

[computersrelease];

[superdealloc];

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[superdidReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

[superviewDidLoad];

NSDictionary *row1 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"MacBook",@"Name",@"White",@"Color",nil];

NSDictionary *row2 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"MacBook Pro",@"Name",@"Silver",@"Color",nil];

NSDictionary *row3 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"iMac",@"Name",@"Silver",@"Color",nil];

NSDictionary *row4 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"Mac Mini",@"Name",@"Silver",@"Color",nil];

NSDictionary *row5 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"Mac Pro",@"Name",@"Silver",@"Color",nil];

NSArray *array = [[NSArray alloc] initWithObjects:row1,row2,row3,row4,row5,nil];

self.computers = array;

[row1 release];

[row2 release];

[row3 release];

[row4 release];

[row5 release];

[array release];

}

- (void)viewDidUnload

{

computers = nil;

[superviewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark -

#pragma mark Table Data Source Methods

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

return [self.computerscount];

}

#pragma mark -

#pragma mark Table View Delegate Methods

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *CellTableIdentifier = @"CellTableIdentifier";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellTableIdentifier];

if(cell==nil){

cell = [[[UITableViewCellalloc] initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:CellTableIdentifier] autorelease];

CGRect nameLableRect = CGRectMake(0,5, 70, 15);

UILabel *nameLable = [[UILabel alloc] initWithFrame:nameLableRect];

nameLable.textAlignment =UITextAlignmentRight;

nameLable.text=@"Name";

nameLable.font= [UIFontboldSystemFontOfSize:12];

[cell.contentViewaddSubview:nameLable];

[nameLable release];

CGRect colorLableRect = CGRectMake(0,26, 70, 15);

UILabel *colorLable = [[UILabel alloc] initWithFrame:colorLableRect];

colorLable.textAlignment =UITextAlignmentRight;

colorLable.text =@"Color";

colorLable.font = [UIFontboldSystemFontOfSize:12];

[cell.contentViewaddSubview:colorLable];

[colorLable release];

CGRect nameValueRect = CGRectMake(80,5, 200, 15);

UILabel *nameValue = [[UILabel alloc] initWithFrame:nameValueRect];

nameValue.tag =kNameValueTag;

[cell.contentViewaddSubview:nameValue];

[nameValue release];

CGRect colorValueRect = CGRectMake(80,25, 200, 15);

UILabel *colorValue = [[UILabel alloc] initWithFrame:colorValueRect];

colorValue.tag =KColorValueTag;

[cell.contentViewaddSubview:colorValue];

[colorValue release];

}

NSUInteger row = [indexPath row];

NSDictionary *rowData = [self.computersobjectAtIndex:row];

UILabel *name = (UILabel *)[cell.contentViewviewWithTag:kNameValueTag];

name.text = [rowDataobjectForKey:@"Name"];

UILabel *color = (UILabel *)[cell.contentViewviewWithTag:KColorValueTag];

color.text = [rowDataobjectForKey:@"Color"];

return cell;

}

@end

// test12ViewController.h

// test12

// Created by lily bear on 12-2-15.

#import<UIKit/UIKit.h>

#define KNameValueTag1

#define KColorValueTag2

@interface test12ViewController :UIViewController <UITableViewDataSource,UITableViewDelegate>{

NSArray *computers;

UITableViewCell *tvCell;

}

@property (nonatomic,retain) NSArray *computers;

@property (nonatomic,retain) IBOutletUITableViewCell *tvCell;

@end

// test12ViewController.m

// test12

// Created by lily bear on 12-2-15.

#import"test12ViewController.h"

@implementation test12ViewController

@synthesize computers;

@synthesize tvCell;

- (void)dealloc

{

[computersrelease];

[tvCellrelease];

[superdealloc];

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[superdidReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

[superviewDidLoad];

NSDictionary *row1 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"MacBook",@"Name",@"White",@"Color",nil];

NSDictionary *row2 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"MacBook Pro",@"Name",@"Silver",@"Color",nil];

NSDictionary *row3 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"iMac",@"Name",@"Silver",@"Color",nil];

NSDictionary *row4 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"Mac Mini",@"Name",@"Silver",@"Color",nil];

NSDictionary *row5 = [[NSDictionaryalloc] initWithObjectsAndKeys:@"Mac Pro",@"Name",@"Silver",@"Color",nil];

NSArray *array = [[NSArray alloc] initWithObjects:row1,row2,row3,row4,row5,nil];

self.computers = array;

[row1 release];

[row2 release];

[row3 release];

[row4 release];

[row5 release];

[array release];

}

- (void)viewDidUnload

{

self.computers = nil;

self.tvCell = nil;

[superviewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark -

#pragma mark Table View Data Source Methods

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

return [self.computerscount];

}

#pragma mark -

#pragma mark Table View Delegate Methods

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *CustomCellIdentifier =@"CustomCellIdentifier";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CustomCellIdentifier];

if(cell == nil){

NSArray *nib = [[NSBundlemainBundle] loadNibNamed:@"CustomCell"owner:selfoptions:nil];

if([nib count] > 0){

cell = self.tvCell;

}

else{

NSLog(@"failed to load CustomCell nib file!");

}

NSUInteger row = [indexPath row];

NSDictionary *rowData = [self.computersobjectAtIndex:row];

UILabel *colorLable = (UILabel *)[cell viewWithTag:KNameValueTag];

colorLable.text = [rowDataobjectForKey:@"Color"];

UILabel *nameLable = (UILabel *)[cell viewWithTag:KColorValueTag];

nameLable.text = [rowDataobjectForKey:@"Name"];

return cell;

}

@end

// main.m

// test13

// Created by lily bear on 12-2-15.

#import<UIKit/UIKit.h>

int main(int argc,char *argv[])

{

NSAutoreleasePool *pool = [[NSAutoreleasePoolalloc] init];

int retVal = UIApplicationMain(argc, argv,nil, nil);

[pool release];

return retVal;

}

// test13ViewController.m

// test13

// Created by lily bear on 12-2-15.

#import"test13ViewController.h"

@implementation test13ViewController

@synthesize names;

@synthesize keys;

- (void)dealloc

{

[namesrelease];

[keysrelease];

[superdealloc];

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[superdidReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

[superviewDidLoad];

NSString *path = [[NSBundlemainBundle] pathForResource:@"sortednames"ofType:@"plist"];

NSDictionary *dict = [[NSDictionaryalloc] initWithContentsOfFile:path];

self.names = dict;

[dict release];

NSArray *array = [[names allKeys] sortedArrayUsingSelector:@selector(compare:)];

self.keys = array;

}

- (void)viewDidUnload

{

names = nil;

keys = nil;

[superviewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark -

#pragma mark Table View Data Source Methods

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

return [keys count];

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

NSString *key = [keys objectAtIndex:section];

NSArray *nameSection = [names objectForKey:key];

return [nameSection count];

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

NSUInteger section = [indexPath section];

NSUInteger row = [indexPath row];

NSString *key = [keys objectAtIndex:section];

NSArray *nameSection = [names objectForKey:key];

static NSString *SectionTableIdentifier =@"SectionTableIdentifier";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SectionTableIdentifier];

if(cell == nil){

cell = [[UITableViewCellalloc] initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:SectionTableIdentifier];

}

cell.textLabel.text = [nameSectionobjectAtIndex:row];

return cell;

}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{

NSString *key = [keys objectAtIndex:section];

return key;

}

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{

return keys;

}

@end

// test14ViewController.h

// test14

// Created by lily bear on 12-2-15.

#import<UIKit/UIKit.h>

@interface test14ViewController :UIViewController <UITableViewDataSource,UITableViewDelegate, UISearchBarDelegate>{

UITableView *table;

UISearchBar *search;

NSDictionary *allName;

NSMutableDictionary *names;

NSMutableArray *keys;

BOOL isSearching;

}

@property (nonatomic,retain) IBOutletUITableView *table;

@property (nonatomic,retain) IBOutletUISearchBar *search;

@property (nonatomic,retain) NSDictionary *allName;

@property (nonatomic,retain) NSMutableDictionary *names;

@property (nonatomic,retain) NSMutableArray *keys;

- (void)resetSearch;

- (void)handleSearchForTerm:(NSString *)searchTerm;

@end

// test14ViewController.m

// test14

// Created by lily bear on 12-2-15.

#import"test14ViewController.h"

#import"NSDictionary-MutableDeepCopy.h"

@implementation test14ViewController

@synthesize table;

@synthesize search;

@synthesize allName;

@synthesize names;

@synthesize keys;

- (void)resetSearch{

NSMutableDictionary *allNamesCopy = [self.allNamemutableDeepCopy];

self.names = allNamesCopy;

[allNamesCopy release];

NSMutableArray *keyArray = [[NSMutableArrayalloc] init];

[keyArrayaddObject:UITableViewIndexSearch];

[keyArrayaddObjectsFromArray:[[self.allNameallKeys] sortedArrayUsingSelector:@selector(compare:)]];

self.keys = keyArray;

[keyArray release];

}

- (void)handleSearchForTerm:(NSString *)searchTerm{

NSMutableArray *sectionsToRemove = [[NSMutableArrayalloc] init];

[selfresetSearch];

for(NSString *key in self.keys){

NSMutableArray *array = [names valueForKey:key];

NSMutableArray *toRemove = [[NSMutableArrayalloc] init];

for(NSString *name in array){

if([name rangeOfString:searchTerm options:NSCaseInsensitiveSearch].location ==NSNotFound)

[toRemoveaddObject:name];

}

if([array count] == [toRemove count])

[sectionsToRemoveaddObject:key];

[array removeObjectsInArray:toRemove];

[toRemove release];

}

[self.keysremoveObjectsInArray:sectionsToRemove];

[sectionsToRemoverelease];

[tablereloadData];

}

- (void)dealloc

{

[tablerelease];

[searchrelease];

[allNamerelease];

[namesrelease];

[keysrelease];

[superdealloc];

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[superdidReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

[superviewDidLoad];

NSString *path = [[NSBundlemainBundle] pathForResource:@"sortednames"ofType:@"plist"];

NSDictionary *dict = [[NSDictionaryalloc] initWithContentsOfFile:path];

self.allName = dict;

[dict release];

[selfresetSearch];

[tablereloadData];

[tablesetContentOffset:CGPointMake(0.0,44.0) animated:NO];

}

- (void)viewDidUnload

{

self.table = nil;

self.search = nil;

self.allName = nil;

self.names = nil;

self.keys = nil;

[superviewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark -

#pragma mark Table View Data Source Methods

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

return ([keys count] > 0) ? [keyscount]: 1;

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

if([keys count] ==0){

return 0;

}

NSString *key = [keys objectAtIndex:section];

NSArray *nameSection = [names objectForKey:key];

return [nameSection count];

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

NSUInteger section = [indexPath section];

NSUInteger row = [indexPath row];

NSString *key = [keys objectAtIndex:section];

NSArray *nameSection = [names objectForKey:key];

static NSString *SectionTableIdentifier =@"SectionTableIdentifier";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SectionTableIdentifier];

if(cell == nil){

cell = [[UITableViewCellalloc] initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:SectionTableIdentifier];

}

cell.textLabel.text = [nameSectionobjectAtIndex:row];

return cell;

}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{

if([keys count] ==0)

return nil;

NSString *key = [keys objectAtIndex:section];

if(key == UITableViewIndexSearch)

return nil;

return key;

}

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{

if(isSearching)

return nil;

return keys;

}

#pragma mark -

#pragma mart Table View Delegate Methods

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath{

[searchresignFirstResponder];

isSearching = NO;

search.text = @"";

[tableView reloadData];

return indexPath;

}

#pragma mark -

#pragma mark Search Bar Delegate Methods

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{

NSString *searchTerm = [searchBar text];

[selfhandleSearchForTerm:searchTerm];

}

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{

if([searchText length] == 0){

[selfresetSearch];

[tablereloadData];

}

[selfhandleSearchForTerm:searchText];

}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{

isSearching = NO;

search.text = @"";

[selfresetSearch];

[tablereloadData];

[searchBarresignFirstResponder];

}

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{

isSearching = YES;

[tablereloadData];

}

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index{

NSString *key = [keys objectAtIndex:index];

if(key == UITableViewIndexSearch){

[tableView setContentOffset:CGPointZero animated:NO];

return NSNotFound;

}

else return index;

}

@end

[to be continued]