我正在尝试将 XML 数据解析到表视图中，但数据没有得到反映。我正在实现一个刷新按钮，一旦单击该按钮就会从 XML 加载数据。有人可以告诉我我做错了什么吗？下面是我的代码
//
// Tab1.m
// Sample
//
// Created by Vishal Thakur on 10/3/13.
// Copyright (c) 2013 __MyCompanyName__. All rights reserved.
//
#import "Tab1.h"
#import "TAB2.h"
#import "Fruit.h"
@interface Tab1() {
TAB2 *t2;
Fruit *aFruit;
NSString *mark;
}
@property (retain, nonatomic) NSArray *fruits;
@end
@implementation Tab1
@synthesize table;
@synthesize fruits;
@synthesize fruitsDictionary;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
self.fruits = [NSArray arrayWithObjects:@"Apple", @"PineApple", @"Orange", @"Banana", @"Pear", @"Kiwi", @"Strawberry", nil];
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Names" ofType:@"xml"];
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:[NSData dataWithContentsOfFile:filePath]];
[parser setDelegate:self];
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
UIView* customView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 300.0, 44.0)];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setFrame:CGRectMake(50, 10, 80, 40)];
[button setTitle:@"Refresh" forState:UIControlStateNormal];
[button addTarget:self action:@selector(RefreshTable:) forControlEvents:UIControlEventTouchUpInside]; [customView addSubview:button];
self.table.tableHeaderView = customView;
}
return self;
}
-(void)RefreshTable:(id)sender {
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Names" ofType:@"xml"];
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:[NSData dataWithContentsOfFile:filePath]];
[parser setDelegate:self];
if ([parser parse]) {
NSLog(@"successful");
NSLog(@"::::%@",fruitsDictionary);
///////DetailScreen *ds=[[DetailScreen alloc]init];
[self.table reloadData];
}
else {
NSLog(@"Failure!");
}
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
{
NSInteger count= [self.fruits count];
return count;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView;
{
return 1;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSArray *keys = [fruitsDictionary allKeys];
NSDictionary *local = [NSDictionary dictionaryWithObject:[fruitsDictionary valueForKey:[keys objectAtIndex:indexPath.row]]forKey:[keys objectAtIndex:indexPath.row]];
NSLog(@"%@",keys);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Fruit" message:(NSString *)[keys objectAtIndex:indexPath.row] delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"other", nil];
[alert show];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell Identifier";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSArray *keys = [fruitsDictionary allKeys];
NSString *fruit = [keys objectAtIndex:[indexPath row]];
[cell.textLabel setText:fruit];
return cell;
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
if ([elementName isEqualToString:@"Fruit"]) {
aFruit = [[Fruit alloc] init];
if (!fruitsDictionary) {
fruitsDictionary = [[NSMutableDictionary alloc] init];
}
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
currentElement = nil;
currentElement = [[NSMutableString alloc] initWithString:string];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if ([elementName isEqualToString:@"Name"]) {
aFruit.name = currentElement;
}
else if ([elementName isEqualToString:@"Description"]) {
aFruit.description = currentElement;
}
else if ([elementName isEqualToString:@"Fruit"]) {
[fruitsDictionary setObject:aFruit forKey:aFruit.name];
}
}
- (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];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)viewDidUnload
{
[self setTable:nil];
[self setFruits:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (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];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table view data source
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Table view delegate
@end