Pfthb

I am pretty new to Objective-C and iOS programming.

I have a SummaryUITableViewCell (a custom class inheriting from UITableViewCell) which contains an Activity Indicator (loadingSpinner) and a UIWebView (webView).

My app gets a list of URLs to load, then presents the table view, one cell per URL.

In cellForRowAtIndexPath I start the animation for the loading spinner and call cell.webView loadRequest:URL.

Everything works fine and webViewDidFinishLoad gets called once per URL (it has just an NSLog statement in it for now). What I can't figure out is how to find the appropriate loadingSpinner so that I can stop the animation and hide it.

You want each of your SummaryUITableViewCell to implement UIWebViewDelegate and handle the webViewDidFinishLoad call themselves. Then you can easily hide the spinners each time the UIWebView loads. Here is one way you could implement the SummaryUITableViewCell.

SummaryTableViewCell.h

#import <UIKit/UIKit.h>

@interface SummaryTableViewCell : UITableViewCell <UIWebViewDelegate>

@end

SummaryTableViewCell.m

#import "SummaryTableViewCell.h"

@interface SummaryTableViewCell ()

// Keep references to our spinner and webview here
@property (nonatomic, strong) UIActivityIndicatorView *spinner;
@property (nonatomic, strong) UIWebView *webView;

@end

@implementation SummaryTableViewCell

- (instancetype)initWithUrl:(NSString *)url 
 self = [super init];
 if (self) 
 [self setup:url];
 
 return self;


- (void)setup:(NSString *)url 
 // Add Webview
 self.webView = [[UIWebView alloc] initWithFrame:[self frame]];
 [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
 [self.webView setAlpha:0];

 // Set the cell as the delegate of the webview
 [self.webView setDelegate:self];
 [self addSubview:self.webView];

 // Add Spinner
 self.spinner = [[UIActivityIndicatorView alloc] init];
 [self addSubview:self.spinner];


- (void)webViewDidFinishLoad:(UIWebView *)webView 
 // The web view loaded the url so we can now hide the spinner and show the web view
 [self.spinner setAlpha:0];
 [self.webView setAlpha:1];


@end