我有一个应用程序，其中有一个基于XML的应用程序。这是为了显示当天，明天，后天和后天的天气状况。
我创建了一个自定义表格视图单元格，以便我可以将从XML解析的这些细节显示在这些单元格中。我已经完成了解析器的所有代码并将其显示在控制器上，但问题是在tableview的每个单元格中只显示了一个相同的值。
这是我的元素类代码：
#import <Foundation/Foundation.h>
@interface TWeatherElement : NSObject
{
NSString *mIcon;
//NSString *mForecastdate;
NSString *mCurrentdate;
NSString *mConditionname;
NSString *mMintemp;
NSString *mMaxtemp;
NSString *mWind;
NSString *mHumidity;
NSString *mWeather;
NSString *mXmlapireply;
}
@property (nonatomic,retain) NSString *icon;
//@property (nonatomic,retain) NSString *forecastdate;
@property (nonatomic, retain)NSString *currentdate;
@property (nonatomic,retain)NSString *conditionname;
@property (nonatomic,retain)NSString *mintemp;
@property (nonatomic, retain)NSString *maxtemp;
@property (nonatomic, retain)NSString *wind;
@property (nonatomic, retain)NSString *humidity;
@property (nonatomic, retain)NSString *weather;
@property (nonatomic, retain)NSString *xmlapireply;
@end
和.m
#import "TWeatherElement.h"
@implementation TWeatherElement
@synthesize icon = mIcon;
//@synthesize forecastdate = mForecastdate;
@synthesize currentdate = mCurrentdate;
@synthesize conditionname = mConditionname;
@synthesize mintemp = mMintemp;
@synthesize maxtemp = mMaxtemp;
@synthesize wind = mWind;
@synthesize humidity = mHumidity;
@synthesize weather = mWeather;
@synthesize xmlapireply =mXmlapireply;
-(void)dealloc
{
[mIcon release];
//[mForecastdate release];
[mCurrentdate release];
[mConditionname release];
[mMintemp release];
[mMaxtemp release];
[mWind release];
[mHumidity release];
[mWeather release];
[mXmlapireply release];
[super dealloc];
}
@end
这是我的解析器类：
#import "TWeatherElement.h"//this is the class where the elements are Created
#import <Foundation/Foundation.h>
@interface TWeatherParser : NSObject<NSXMLParserDelegate>
{
NSString *urlString;
NSMutableArray *mParserArray;
//NSXMLParser *mXmlParser;
NSXMLParser *parser;
NSMutableString *mCurrentElement;
BOOL elementFound;
TWeatherElement *mWeather;
}
@property (nonatomic, retain) NSString *urlString;
//@property (nonatomic, retain) NSMutableArray *tweetArray;
//
@property (nonatomic, retain) NSXMLParser *parser;
@property (nonatomic, retain) NSMutableString *currentElement;
@property (nonatomic, retain)NSMutableArray *mParserArray;
@property (nonatomic, retain) TWeatherElement *weatherobj;
//-(void)getInitialiseWithData:(NSData *)inData;
-(NSMutableArray *)retrieveTweetsFromURL:(NSString *)urlString;
@end
#import "TWeatherParser.h"
#import "JourneyAppDelegate.h"
#import "api.h"
//#define kParsingFinishedNotification @"ParsingFinishedNotification"
@implementation TWeatherParser
@synthesize weatherobj = mWeather;
@synthesize currentElement = mCurrentElement;
@synthesize mParserArray;
@synthesize urlString;
@synthesize parser;
-(id)init
{
if ((self = [super init]))
{
self.mParserArray = [[[NSMutableArray alloc]init]autorelease];
}
return self;
}
-(NSMutableArray *)retrieveTweetsFromURL:(NSString *)urlString {
mParserArray = [[NSMutableArray alloc] init];
NSURL *urlToRetrieve = [NSURL URLWithString:urlString] ;
parser = [[NSXMLParser alloc] initWithContentsOfURL:urlToRetrieve];
[parser setDelegate:self];
if ([parser parse])
{
NSLog(@"Parsed OK");
} else {
NSLog(@"There's been a problem :-(");
}
return mParserArray;
}
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString*) elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString*)qualifiedName attributes:(NSDictionary*)attributeDict
{
if ([elementName isEqualToString:@"xml_api_reply"])
{
mWeather = [[TWeatherElement alloc]init];
NSString *data8= [attributeDict objectForKey:@"version"];
if(data8 !=nil)
mWeather.xmlapireply =data8 ;
[mParserArray addObject:mWeather];
}
if ([elementName isEqualToString:@"weather"])
{
NSString *data0= [attributeDict objectForKey:@"module_id"];
if(data0 !=nil)
self.weatherobj.weather=data0 ;
[mParserArray addObject:self.weatherobj];
NSLog(@"weather==%@",[attributeDict valueForKey:@"module_id"]);
}
if([elementName isEqualToString:@"current_date_time"])
{
NSString *data1= [attributeDict objectForKey:@"data"];
if (data1 !=nil)
self.weatherobj.currentdate =data1;
[mParserArray addObject:self.weatherobj];
NSLog(@"current_date_time==%@",[attributeDict valueForKey:@"data"]);
}
if([elementName isEqualToString:@"condition"])
{
NSString *data2= [attributeDict objectForKey:@"data"];
if (data2 !=nil)
self.weatherobj.conditionname=data2;
[mParserArray addObject:self.weatherobj];
NSLog(@"condition==%@",[attributeDict valueForKey:@"data"]);
}
if([elementName isEqualToString:@"humidity"])
{
NSString *data3= [attributeDict objectForKey:@"data"];
if (data3 !=nil)
self.weatherobj.humidity =data3;
[mParserArray addObject:self.weatherobj];
NSLog(@"humidity==%@",[attributeDict valueForKey:@"data"]);
}
if([elementName isEqualToString:@"icon"])
{
NSString *data4= [attributeDict objectForKey:@"data"];
if (data4 !=nil)
self.weatherobj.icon =data4;
[mParserArray addObject:self.weatherobj];
NSLog(@"icon==%@",[attributeDict valueForKey:@"data"]);
}
if([elementName isEqualToString:@"wind_condition"])
{
NSString *data5= [attributeDict objectForKey:@"data"];
if (data5 !=nil)
self.weatherobj.wind =data5;
[mParserArray addObject:self.weatherobj];
NSLog(@"wind_condition==%@",[attributeDict valueForKey:@"data"]);
}
if([elementName isEqualToString:@"low"])
{
NSString *data6= [attributeDict objectForKey:@"data"];
if (data6 !=nil)
self.weatherobj.mintemp = data6;
[mParserArray addObject:self.weatherobj];
NSLog(@"low==%@",[attributeDict valueForKey:@"data"]);
}
if([elementName isEqualToString:@"high"])
{
NSString *data7= [attributeDict objectForKey:@"data"];
if (data7 !=nil)
self.weatherobj.maxtemp =data7;
[mParserArray addObject:self.weatherobj];
NSLog(@"high==%@",[attributeDict valueForKey:@"data"]);
}
}
-(void)parser:(NSXMLParser*)parser foundCharacters:(NSString*)string
{
if (nil!= self.currentElement)
{
[self.currentElement appendString:string];
}
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString*)elementName namespaceURI:(NSString*)namespaceURI qualifiedName:(NSString*)qName
{
if (nil != qName)
{
elementName = qName;
}
if ([elementName isEqualToString:@"current_date_time "])
{
self.weatherobj.currentdate = self.currentElement;
}
else if ([elementName isEqualToString:@"condition "])
{
self.weatherobj.conditionname = self.currentElement;
}
else if ([elementName isEqualToString:@"humidity "])
{
self.weatherobj.humidity = self.currentElement;
}
else if ([elementName isEqualToString:@"icon "])
{
self.weatherobj.icon = self.currentElement;
}
else if ([elementName isEqualToString:@"wind_condition "])
{
self.weatherobj.wind = self.currentElement;
}
else if ([elementName isEqualToString:@"low "])
{
self.weatherobj.mintemp = self.currentElement;
}
else if ([elementName isEqualToString:@"high "])
{
self.weatherobj.maxtemp = self.currentElement;
}
else if ([elementName isEqualToString:@"weather"])
{
[mParserArray addObject:self.weatherobj];
NSLog(@"mDataArray count = %d",[mParserArray count]);
[self.weatherobj release];
//[mParserArray release];
}
}
-(void)dealloc
{
[super dealloc];
self.weatherobj = nil;
self.currentElement = nil;
}
@end
这是我的控制器类，我在其中设置数组
#import <UIKit/UIKit.h>
#import "TWeatherParser.h"
@class TWeatherParser;
@interface TWeatherController : UITableViewController {
UITableView *mTableView;
NSMutableArray *mImage;
NSMutableArray *weatherarray;
TWeatherParser *weather;
}
@property (nonatomic, retain) IBOutlet UITableView *mTableView;
@property (nonatomic, retain) NSMutableArray *weatherarray;
@property (nonatomic, retain) TWeatherParser *weather;
@end
#import "TWeatherController.h"
#import "TWeatherCell.h"
#import "TWeatherElement.h"
#import "TWeatherParser.h"
//#import "api.h"
@implementation TWeatherController
@synthesize mTableView;
@synthesize weatherarray;
@synthesize weather;
#pragma mark -
#pragma mark Initialization
- (id)initWithStyle:(UITableViewStyle)style {
// Override initWithStyle: if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
style = UITableViewStyleGrouped;
if (self = [super initWithStyle:style]) {
}
return self;
}
#pragma mark -
#pragma mark View lifecycle
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(@"About to run the ViewDidLoad superclass method...");
[super viewDidLoad];
self.title = @"Everyone";
self.editButtonItem.possibleTitles = [NSSet setWithObjects:@"Add/Edit", @"Done", nil];
self.editButtonItem.title = @"Update";
weatherarray = [[NSMutableArray alloc] init];
TWeatherParser *xmlController;
xmlController = [[TWeatherParser alloc] init];
// Now go and grab the data from the url...
weatherarray = [xmlController retrieveTweetsFromURL:kXMLurl];
NSLog(@"\n\nThere are %d objects in the array...", [weatherarray count]);
[xmlController release];
}
#pragma mark -
#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 [weatherarray count];
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
TWeatherCell *cell =(TWeatherCell *) [mTableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[TWeatherCell alloc] initWithStyle:UITableViewStyleGrouped reuseIdentifier:CellIdentifier] autorelease];
}
TWeatherElement *newobj = [weatherarray objectAtIndex:indexPath.row];
if ([newobj.icon isEqualToString:@"http://\n"])
{
cell.weatherimage.image = [UIImage imageNamed:@"listIcon-H.png"];
}
else {
NSData *imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:newobj.icon]];
cell.weatherimage.image = [UIImage imageWithData:imageData];
[imageData release];
}
//Here it is creating some problem here same value is getting displayed for every cells.
cell.reportdate.text = newobj.currentdate;
cell.conditionname.text = newobj.conditionname;
cell.twotemp.text = [NSString stringWithFormat:@"Temp:%@/%@",newobj.mintemp,newobj.maxtemp];
cell.twodirection.text = newobj.wind;
cell.humidity.text = newobj.humidity;
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
// Configure the cell...
return cell;
}
- (void)dealloc {
[super dealloc];
[weatherarray release];
[weather release];
[mTableView release];
}
@end
答案 0 :(得分：0)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
ListDetailCell *cell= [[[ListDetailCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
tableView.backgroundColor = [UIColor whiteColor];
if (cell == nil)
{
cell = [[[ListDetailCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier]
autorelease];
}
switch (indexPath.row)
{
case 0:
NSLog(@"%d",indexPath.row);
cell.leadingLabel.text = @"Name: ";
cell.leadingLabel.font = [UIFont fontWithName:LABELS_FONT_NAME_BOLD size:11.0f];
cell.leadingLabel.textColor = FONT_GREEN_COLOR;
cell.volInfo.text = volRow.volName;
cell.volInfo.font = [UIFont fontWithName:LABELS_FONT_NAME size:11.0f];
break;
case 1:
NSLog(@"%d",indexPath.row);
cell.leadingLabel.text = @"Address: ";
cell.leadingLabel.font = [UIFont fontWithName:LABELS_FONT_NAME_BOLD size:11.0f];
cell.leadingLabel.textColor = FONT_GREEN_COLOR;
cell.volInfo.text = volRow.volAddress;
cell.volInfo.font = [UIFont fontWithName:LABELS_FONT_NAME size:11.0f];
break;
case 2:
NSLog(@"%d",indexPath.row);
cell.leadingLabel.text = @"Phone: ";
cell.leadingLabel.font = [UIFont fontWithName:LABELS_FONT_NAME_BOLD size:11.0f];
cell.leadingLabel.textColor = FONT_GREEN_COLOR;
cell.volInfo.text = volRow.phone;
cell.volInfo.font = [UIFont fontWithName:LABELS_FONT_NAME size:11.0f];
break;
case 3:
NSLog(@"%d",indexPath.row);
cell.leadingLabel.text = @"Email: ";
cell.leadingLabel.font = [UIFont fontWithName:LABELS_FONT_NAME_BOLD size:11.0f];
cell.leadingLabel.textColor = FONT_GREEN_COLOR;
cell.volInfo.text = volRow.email;
cell.volInfo.font = [UIFont fontWithName:LABELS_FONT_NAME size:11.0f];
break;
default:
NSLog(@"Out of Range ",indexPath.row);
break;
}
return cell;
}
如果要在不同的单元格中显示不同的值，则必须使用switch case来检测行索引：
volRow变量保存您要显示的解析数据......
答案 1 :(得分：0)
Apple的SeismicXML确实非常适合并且很容易适应。
http://developer.apple.com/library/ios/#samplecode/SeismicXML/
答案 2 :(得分：0)
试试这个
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
//tableViewDataSource should contain your data returned from parsing
//Here put a NSLog to print the Array Count just know you are getting right values
return [tableViewDataSource count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UICustomTableViewCell *cell;
cell = [tableView dequeueReusableCellWithIdentifier:@"cell"]; //Create cell
if(cell == nil)
{
cell = [[[UICustomTableViewCell alloc] init] autorelease];
// Initialize All controls here if you want to
//This If statement will execute (Number of visible Cells) number of times
}
else
{
// when Reused get the controls here
}
// Assign the data here
cell.customlabel.text =[tableDataSourceArray objectAtIndex:indexPath.row];
return cell;
}
如果您遇到问题，请告诉我。