收到推播時有兩種狀況：
- 前景 (Foreground)
- 背景 (Background)
我現在想只在背景收到推播時，使用者點進來再做對應處理，不然使用者在前景已經處理過的任務，後到的推播再來做一次，就不是很合理囉～
/**
Theme: Detect Foreground or Background
IDE: Xcode 7
Language: Objective C
Date: 104/09/28
Author: HappyMan
Blog: https://cg2010studio.wordpress.com/
*/
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
// 先判斷前景或背景收到，因為推播太慢(可能要30s)收到
if ([AppDelegate runningInForeground]) {
return;
}
}
+(BOOL)runningInBackground
{
UIApplicationState state = [UIApplication sharedApplication].applicationState;
BOOL result = (state == UIApplicationStateBackground);
return result;
}
+(BOOL)runningInForeground
{
UIApplicationState state = [UIApplication sharedApplication].applicationState;
BOOL result = (state == UIApplicationStateActive);
return result;
}
[UIApplication sharedApplication].applicationState
- UIApplicationStateActive
- UIApplicationStateInactive
- UIApplicationStateBackground
Inactive我就不太曉得什麼狀況用得上。
參考：iOS how to judge application is running foreground or background?。
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