在 ios sdk 中显示来自推送通知的图像

Posted 2023-02-24

【中文标题】在 ios sdk 中显示来自推送通知的图像

【英文标题】：SHow image from Push notification in ios sdk

【发布时间】：2013-11-07 12:50:31

【问题描述】：

我是 ios 和 PNS 的新手，我正在处理推送通知，基于此我在通知中获取 URL，我需要将图像显示到图像视图中。我成功获得了 PNS 也使用有效负载获得了 URL，但它没有显示在另一个类的图像视图中 下面是我正在使用的代码

  - (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo 
if (application.applicationState == UIApplicationStateActive) // If app is running and you got notification then show it 

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Did receive a Remote Notification" message:[NSString stringWithFormat:@"You Have a Notification :\n%@",userInfo[@"aps"][@"alert"]]delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];

    [alertView show];

NSLog(@"Payload: %@", userInfo);
imageURL =  userInfo[@"aps"][@"alert"];
MainViewController *mv =  [[MainViewController alloc] init];
[mv.ansinage setImage:[UIImage imageNamed:@"cartoon.png"]]; // Right now i am setting image in resource but still not setting in mainviewcontrller when i am open app

【问题讨论】：

您可以将图像引用到 MainViewController。以你的方式是不可能的......

你能再解释一下吗

【参考方案1】：

-(void) sshowansimage:(NSString *) strImageURL

NSURL *imageURL = [NSURL URLWithString:strImageURL];
NSLog(@"coming URL is %@", strImageURL);
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^
    NSData *imageData = [NSData dataWithContentsOfFile:strImageURL];
    [self performSelectorOnMainThread:@selector(showImage:) withObject:imageData waitUntilDone:YES];
);

-(void)showImage:(NSData*)imageAsData

NSLog(@"IN image view mthhod data is %d",imageAsData.length);
ansinage.image = [UIImage imageWithData:imageAsData];