ios 如果应用程序已经在运行，如何处理推送通知？
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原文地址: http://stackoverflow.com/questions/1554751/
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How to handle push notifications if the application is already running?
提问by Rahul Vyas
How do we handle push notifications if the application is alreadyrunning ? I want to show an alert if the application is running (instead of a push notification alert). Only if the application is not running, then show a push notification alert.
如果应用程序已经在运行，我们如何处理推送通知？如果应用程序正在运行，我想显示警报（而不是推送通知警报）。仅当应用程序未运行时，才显示推送通知警报。
Also, if I send a payload to APNs, how can I create an alert with a cancel button?
另外，如果我向 APNs 发送有效负载，我如何创建带有取消按钮的警报？
回答by notnoop
You can implement application:didReceiveRemoteNotification:
你可以实施 application:didReceiveRemoteNotification:
Here is a possible sample code:
这是一个可能的示例代码：
- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
{
NSString *message = nil;
id alert = [userInfo objectForKey:@"alert"];
if ([alert isKindOfClass:[NSString class]]) {
message = alert;
} else if ([alert isKindOfClass:[NSDictionary class]]) {
message = [alert objectForKey:@"body"];
}
if (alert) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Title"
message:@"AThe message." delegate:self
cancelButtonTitle:@"button 1"
otherButtonTitles:@"button", nil];
[alertView show];
[alertView release];
}
回答by TomTom
You can check for the state of the UIApplication. Just do a check like this
您可以检查 UIApplication 的状态。做一个这样的检查
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
UIApplicationState state = [application applicationState];
if (state == UIApplicationStateActive)
{
UIAlertView *alert = [[[UIAlertView alloc] initWithTitle:@"xxx" message:yourMessage delegate:self cancelButtonTitle:@"Done" otherButtonTitles: @"Anzeigen", nil] autorelease];
[alert setTag: 2];
[alert show];
}
else {
// Push Notification received in the background
}
}
回答by Vijay Shankar
"alert" key will not be there directly under the userInfo dictionary, you need to get another dictionary with name "aps" and then get the "alert" or "body" from "aps" dictionary.
“alert”键不会直接在 userInfo 字典下，您需要获取另一个名为“aps”的字典，然后从“aps”字典中获取“alert”或“body”。
回答by Fahar
Iterating the 3 levels of payload
迭代 3 个级别的有效载荷
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
for (id key in userInfo) {
NSLog(@"key: %@, value: %@", key, [userInfo objectForKey:key]);
NSString *message = nil;
NSDictionary *aps = [NSDictionary dictionaryWithDictionary:(NSDictionary *) [userInfo objectForKey:key] ];
for (id key1 in aps){
NSLog(@"key1: %@", key1);
id alert = [aps objectForKey:key1];
if ([alert isKindOfClass:[NSDictionary class]]) {
message = [alert objectForKey:@"body"];
NSLog(@"body: %@, value: %@", key1, message);
message = [alert objectForKey:@"loc-args"];
NSLog(@"loc-args: %@, value: %@", key1, message);
NSArray *args = (NSArray *) [alert objectForKey:@"loc-args"] ;
for (id key2 in args){
NSLog(@"key2: %@, value: ", key2);
}
message = [alert objectForKey:@"action-loc-key"];
NSLog(@"action-loc-key: %@, value: %@", key1, message);
}
else if ([alert isKindOfClass:[NSArray class]]) {
for (id key2 in key1){
NSLog(@"key2: %@, value: %@", key2, [key1 objectForKey:key2]);
}
}
else if([key1 isKindOfClass:[NSString class]]) {
message = [aps objectForKey:key1];
NSLog(@"key1: %@, value: %@", key1, message);
}
}
}
}
}
The result is:
结果是：
2012-01-27 20:38:09.599 SPush[4181:707] key: aps, value: {
alert = {
"action-loc-key" = Open;
body = test;
"loc-args" = (
1000,
2000
);
};
badge = 0;
"content-available" = 10;
sound = default;
}
2012-01-27 20:38:13.133 SPush[4181:707] key1: alert
2012-01-27 20:38:13.134 SPush[4181:707] body: alert, value: test
2012-01-27 20:38:13.137 SPush[4181:707] loc-args: alert, value: (
1000,
2000
)
2012-01-27 20:38:13.138 SPush[4181:707] key2: 1000, value:
2012-01-27 20:38:13.139 SPush[4181:707] key2: 2000, value:
2012-01-27 20:38:13.140 SPush[4181:707] action-loc-key: alert, value: Open
2012-01-27 20:38:13.141 SPush[4181:707] key1: sound
2012-01-27 20:38:13.143 SPush[4181:707] key1: sound, value: default
2012-01-27 20:38:13.144 SPush[4181:707] key1: badge
2012-01-27 20:38:13.145 SPush[4181:707] key1: badge, value: 0
2012-01-27 20:38:13.146 SPush[4181:707] key1: content-available
2012-01-27 20:38:13.147 SPush[4181:707] key1: content-available, value: 10
