我是一名处理app的新手，该应用程序具有从plist填充的分组表视图。每个单元格都有图像，标题和描述。一切正常。我还在plist中有一个控制器键，用于加载视图控制器和xib。现在，为所选的每个单元格加载不同的视图控制器。但是加载相同的视图控制器和xib会很好，但只需从同一个plist填充变量（图像，文本和声音文件）。有人可以帮助我做到这一点。这是我的代码
// RootViewController.h
// TableViewPush
//
#import <UIKit/UIKit.h>
@interface RootViewController : UITableViewController <UITableViewDelegate, UITableViewDataSource> {
NSArray *tableDataSm;
}
- (IBAction)howToUse: (id) sender;
@property (nonatomic, retain) NSArray *tableDataSm;
@end
// RootViewController.m
// TableViewPush
//
#import "RootViewController.h"
#import "Location One.h"
#import "HowToUseViewController.h"
#import "TableViewPushAppDelegate.h"
@implementation RootViewController
@synthesize tableDataSm;
- (IBAction)howToUse: (id) sender;
{
HowToUseViewController *how = [[HowToUseViewController alloc] initWithNibName:@"HowToUse" bundle:nil];
[self.navigationController pushViewController:how animated:YES];
[how release];
}
#pragma mark -
#pragma mark View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:@"TableDataSm" ofType:@"plist"];
self.tableDataSm = [NSArray arrayWithContentsOfFile:path];
self.title = @"Studios";
}
/*
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
*/
#pragma mark -
#pragma mark Table view data source
- (NSString *)tableView:(UITableView *)tableView
titleForHeaderInSection:(NSInteger)section {
const NSDictionary *const sectionData = [self.tableDataSm objectAtIndex:section];
return [sectionData objectForKey:@"header"];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [self.tableDataSm count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
const NSDictionary *const data = [self.tableDataSm objectAtIndex:section];
const NSArray *const rows = [data objectForKey:@"rows"];
return [rows count];
}
- (NSDictionary *)rowForIndexPath:(NSIndexPath *)indexPath {
const NSDictionary *const data = [self.tableDataSm objectAtIndex:indexPath.section];
const NSArray *const rows = [data objectForKey:@"rows"];
return [rows objectAtIndex:indexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
const NSDictionary *const row = [self rowForIndexPath:indexPath];
static NSString *CellIdentifier = @"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text = [row objectForKey:@"text"];
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
cell.detailTextLabel.text = [row objectForKey:@"detailText"];
// This assume the image file you specify exists in your bundle of course!
NSString *imageFileName = [row objectForKey:@"image"];
cell.imageView.image = [UIImage imageNamed:imageFileName];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
const NSDictionary *const row = [self rowForIndexPath:indexPath];
NSString *wantedClassName = [row objectForKey:@"controller"];
UIViewController *const vc = [[NSClassFromString (wantedClassName) alloc] init];
NSLog(@"controller is -%@-", wantedClassName);
[self.navigationController pushViewController:vc animated:YES];
[vc release];
}
#pragma mark -
#pragma mark Memory management
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Relinquish ownership any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
// For example: self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
@end
// Location One.h
// TableViewPush
//
#import <UIKit/UIKit.h>
#import "RootViewController.h"
#import <AVFoundation/AVAudioPlayer.h>
#import <AudioToolbox/AudioToolbox.h>
@interface Location_One: UIViewController <AVAudioPlayerDelegate> {
AVAudioPlayer *theAudio;
}
-(IBAction)pushButton;
-(IBAction)play;
-(IBAction)stop;
-(IBAction)pause;
@end
// Location One.m
// TableViewPush
//
#import "Location One.h"
#import "TableViewPushAppDelegate.h"
#import <AVFoundation/AVAudioPlayer.h>
@implementation Location_One
-(id) init{
if((self = [super initWithNibName:@"Location One" bundle:nil])){
}
return self;
}
-(IBAction)pushButton {
NSString *path = [[NSBundle mainBundle] pathForResource:@"AudioOne" ofType:@"mp3"];
if (theAudio)[theAudio release];
theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
theAudio.delegate = self;
[theAudio play];
}
-(IBAction)play {
[theAudio play];
}
-(IBAction)stop {
[theAudio stop];
}
-(IBAction)pause {
[theAudio pause];
}
-(void)beginInterruption{
[theAudio pause];
}
-(void)endInterruptionWithFlags{
[theAudio play];
}
- (void)viewDidLoad {
NSLog(@"InView did load");
[super viewDidLoad];
self.title = @"Glass Illusions Studio";
}
- (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.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[theAudio release];
[Location_One release];
[super dealloc];
}
@end
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
<dict>
<key>header</key>
<string>85710</string>
<key>rows</key>
<array>
<dict>
<key>text</key>
<string>52 Glass Illusions Studio</string>
<key>detailText</key>
<string>150 S Camino Seco, #119</string>
<key>image</key>
<string>VisualFEight.png</string>
<key>controller</key>
<string>Location_One</string>
<key>picture</key>
<string>VisualOne.png</string>
<key>audio</key>
<string>AudioOne.mp3</string>
<key>description</key>
<string>TextOne</string>
</dict>
<dict>
<key>text</key>
<string>53 Illusions Gallery</string>
<key>detailText</key>
<string>150 S Camino Seco, #150</string>
<key>image</key>
<string>VisualFTen.png</string>
<key>controller</key>
<string>Location_One</string>
<key>picture</key>
<string>VisualTwo.png</string>
<key>audio</key>
<string>AudioTwo.mpg</string>
<key>description</key>
<string>TextTwo</string>
</dict>
<dict>
<key>text</key>
<string>54 Adam Noman Metal Sculpture</string>
<key>detailText</key>
<string>7208 E Paseo San Andres</string>
<key>image</key>
<string>VisualFEleven.png</string>
<key>controller</key>
<string>Location_One</string>
<key>picture</key>
<string>VisualThree.png</string>
<key>audio</key>
<string>AudioThree.mp3</string>
<key>description</key>
<string>TextThree</string>
</dict>
<dict>
<key>text</key>
<string>54 Firefly Glass Gallery</string>
<key>detailText</key>
<string>8002 E Broadway Blvd</string>
<key>image</key>
<string>VisualFSeven.png</string>
<key>controller</key>
<string>Location_One</string>
<key>picture</key>
<string>VisualFour.png</string>
<key>audio</key>
<string>AudioFour.mp3</string>
<key>description</key>
<string>TextFour</string>
</dict>
<dict>
<key>text</key>
<string>55 Red Door Studio</string>
<key>detailText</key>
<string>6323 E Printer Udell St.</string>
<key>image</key>
<string>VisualFFourteen.png</string>
<key>controller</key>
<string>Location_One</string>
<key>picture</key>
<string>VisualFive.png</string>
<key>audio</key>
<string>AudioFive.mp3</string>
<key>description</key>
<string>TextFive</string>
</dict>
</array>
</dict>
<dict>
<key>header</key>
<string>85711</string>
<key>rows</key>
<array>
<dict>
<key>text</key>
<string>56 Fuente Y Claro</string>
<key>detailText</key>
<string>4001 E Montecito St.</string>
<key>image</key>
<string>VisualFFifteen.png</string>
<key>controller</key>
<string>Location_One</string>
<key>picture</key>
<string>VisualSix.png</string>
<key>audio</key>
<string>AudioSix.mp3</string>
<key>description</key>
<string>TextSix</string>
</dict>
</array>
</dict>
</array>
</plist>
答案 0 :(得分：0)
这是在选择不同单元格时要加载的各种VC的数据驱动模式的实现。我展示并实现了LocationOne，这可以用作新位置VC的模板或超级类。我建议您仔细查看使用属性进行数据成员的内存管理（就像我在LocationOne中所做的那样）。它确实使内存管理变得轻而易举。
RootViewController.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSDictionary *const row = [self rowForIndexPath:indexPath];
NSString *wantedClassName = [row objectForKey:@"controller"];
UIViewController *const vc = [[[NSClassFromString (wantedClassName) alloc] autorelease]
if ([vc isKindOfClass:[Location_One class]])
{
Location_One* loVC = (Location_One*)vc;
loVC.myImage = [row objectForKey:@"picture"];
loVC.myText = [row objectForKey:@"decription"];
loVC.mySoundFile = [row objectForKey:@"audio"];
}
NSAssert(vc, @"viewController should exist!");
[self.navigationController pushViewController:vc animated:YES];
// There's no need to release the new VC because it is autoreleased
}
// LocationOne.h
//
@interface Location_One: UIViewController <AVAudioPlayerDelegate>
{
AVAudioPlayer *theAudio;
NSString* myImage;
NSString* myText;
NSString* myAudio;
}
@property (nonatomic, retain) AVAudioPlayer* theAudio;
@property (nonatomic, retain) NSString* myImage;
@property (nonatomic, retain) NSString* myText;
@property (nonatomic, retain) NSString* myAudio;
-(IBAction)pushButton;
-(IBAction)play;
-(IBAction)stop;
-(IBAction)pause;
@end
// LocationOne.m
//
#import "Location One.h"
#import "TableViewPushAppDelegate.h"
#import <AVFoundation/AVAudioPlayer.h>
@implementation Location_One
@synthesize theAudio;
@synthesize myImage;
@synthesize myText;
@synthesize myAudio;
-(IBAction)pushButton:(id)sender
{
NSString *path = [[NSBundle mainBundle] pathForResource:myAudio ofType:@"mp3"];
// theAudio is a property, therefore you can assigning it to self. will bump the retain count.
// and decrement the retain count for any previous audio players (releasing them).
// Since an audio player can only set the URL at creation time, the create a new instance.
// Using properties rather than just class members allows you to handle memory without explicit retains/releases
self.theAudio = [[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL] autorelease];
self.theAudio.delegate = self;
}
-(IBAction)play {
[theAudio play];
}
-(IBAction)stop {
[theAudio stop];
}
-(IBAction)pause {
[theAudio pause];
}
-(void)beginInterruption{
[theAudio pause];
}
-(void)endInterruptionWithFlags{
[theAudio play];
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = @"Glass Illusions Studio";
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Only release theAudio when the view gets an unload message.
// This is because it's recreated as needed.
self.theAudio = nil;
}
- (void)dealloc
{
// I'm not sure why you were doing a self-retain or self-release but I
// suggest against it. Let the NavigationController handle the lifetime
// of this object.
// [Location_One release];
self.theAudio = nil;
self.myImage = nil;
self.myText = nil;
self.myAudio = nil;
[super dealloc];
}
// This method is an older way of iOS handling memory shortages.
// You don't need it as long as you implement viewDidUnload.
// - (void)didReceiveMemoryWarning
@end