从推送通知中提取"警报"文本

Question

我在我的app委托文件中放置了以下代码.理论上,它应该从推送通知中提取消息并将其显示在UIAlertview- 但它显示标题和蜡烛按钮,而不是其他任何内容.谁能看到我错在哪里？

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
    [PFPush handlePush:userInfo];
    pushText = [userInfo objectForKey:@"alert"];
    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:NSLocalizedString(@"News", "")
                          message:pushText
                          delegate:nil
                          cancelButtonTitle:@"Ok"
                          otherButtonTitles: nil];
    [alert show];
}

Answer 1

推送有效载荷具有以下结构:

{
    "aps" : {
             "alert" : "Push notification text"
             }
}

所以你需要首先拔出"aps"字典,然后你可以检索"alert"键的值:

 pushText = [[userInfo objectForKey:@"aps"] objectForKey:@"alert"];