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我已經設置了我的代碼，以便當用戶點擊UITableView中的單元格時，它將繼續到WebViewController，並沿途傳遞該單元格的「Item URL」屬性。在WebViewController類中，我初始化一個UIWebView，並讓它加載相應的URL。出於某種原因，它顯示爲空白，並且不執行任何加載。如何設置WebViewController開始加載網頁？網站不加載在UIWebView
WebViewController.h：
#import <UIKit/UIKit.h>
#import "MatchCenterViewController.h"
@interface WebViewController : UIViewController <UIWebViewDelegate>
@property (strong, nonatomic) NSURL *itemURL;
@property (strong, nonatomic) IBOutlet UIWebView *myWebView;
@end
WebViewController.m：
#import "WebViewController.h"
@interface WebViewController()
@end
@implementation WebViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
_myWebView=[[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
_myWebView.delegate=self;
[self.view addSubview:_myWebView];
self.myWebView.delegate = self; //set the delegate first before calling LoadRequest
NSURL *url = [NSURL URLWithString:_itemURL];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[self.myWebView setScalesPageToFit:YES];
[self.myWebView loadRequest:request];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
MatchCenterViewController.h：
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#import "AsyncImageView.h"
#import "SearchViewController.h"
#import "WebViewController.h"
@interface MatchCenterViewController : UIViewController <UITableViewDataSource>
//irrelevant code hidden for conciseness
@property (strong, nonatomic) NSArray *matchCenterArray;
@property (strong, nonatomic) NSString *searchTerm;
@property (strong, nonatomic) NSURL *itemURL;
@end
MatchCenterViewController.m：
#import "MatchCenterViewController.h"
#import <UIKit/UIKit.h>
@interface MatchCenterViewController() <UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, strong) UITableView *matchCenter;
@end
@implementation MatchCenterViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.matchCenter = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewCellStyleSubtitle];
self.matchCenter.frame = CGRectMake(0,50,320,self.view.frame.size.height-100);
_matchCenter.dataSource = self;
_matchCenter.delegate = self;
[self.view addSubview:self.matchCenter];
_matchCenterArray = [[NSArray alloc] init];
}
- (void)viewDidAppear:(BOOL)animated
{
self.matchCenterArray = [[NSArray alloc] init];
[PFCloud callFunctionInBackground:@"MatchCenter"
withParameters:@{
@"test": @"Hi",
}
block:^(NSArray *result, NSError *error) {
if (!error) {
_matchCenterArray = result;
[_matchCenter reloadData];
NSLog(@"Result: '%@'", result);
}
}];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return _matchCenterArray.count;
}
//the part where i setup sections and the deleting of said sections
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 21.0f;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
//irrelevant code removed for conciseness
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 3;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Initialize cell
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {
// if no cell could be dequeued create a new one
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
//irrelevant code removed for conciseness
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 65;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSURL *itemURL = _matchCenterArray[indexPath.section][@"Top 3"][indexPath.row][@"Item URL"];
[self performSegueWithIdentifier:@"WebViewSegue" sender:self];
}
- (void)deleteButtonPressed:(id)sender
{
// links button
UIButton *deleteButton = (UIButton *)sender;
// Define the sections title
NSString *sectionName = _searchTerm = [[[[_matchCenterArray objectAtIndex:deleteButton.tag] objectForKey:@"Top 3"] objectAtIndex:3]objectForKey:@"Search Term"];
// Run delete function with respective section header as parameter
[PFCloud callFunctionInBackground:@"deleteFromMatchCenter"
withParameters:
@{@"searchTerm": sectionName,}
block:^(NSDictionary *result, NSError *error) {
if (!error) {
[PFCloud callFunctionInBackground:@"MatchCenter"
withParameters:@{
@"test": @"Hi",
}
block:^(NSArray *result, NSError *error) {
if (!error) {
_matchCenterArray = result;
[_matchCenter reloadData];
NSLog(@"Result: '%@'", result);
}
}];
}
}];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
WebViewController *controller = (WebViewController *) segue.destinationViewController;
controller.itemURL = self.itemURL;
}
@end
這幾乎正是我有。 – Ghobs
MatchCenterViewController中的屬性itemURL的類型爲NSURL。你不需要在你的WebviewController中有一個字符串屬性。如果仔細觀察，你會發現不同之處。 – userx