前台規章制度ios

⑴ 蘋果ios如何讓軟體在前台運行並且亮屏

到設置裡面,把屏幕顯示時間調為1小時。就好了。

⑵ iOS端從後台進入前台socket怎麼重連

直接看sdk頭文件即可。

/*! This delegate method offers an opportunity for applications with the "remote-notification" background mode to fetch appropriate new data in response to an incoming remote notification. You should call the fetchCompletionHandler as soon as you're finished performing that operation, so the system can accurately estimate its power and data cost.

This method will be invoked even if the application was launched or resumed because of the remote notification. The respective delegate methods will be invoked first. Note that this behavior is in contrast to application:didReceiveRemoteNotification:, which is not called in those cases, and which will not be invoked if this method is implemented. !*/
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler NS_AVAILABLE_IOS(7_0);

說得很清楚了，這貨是ios7中引入的，如果實現了這貨，那原先的版本- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo NS_AVAILABLE_IOS(3_0);就不會被調用。
這貨被調用後，你唯一可做的就是執行你的後台代碼，然後調用completionHandler(your_result);
你得到的警告就是因為你沒調用completionHandler。
至於這里能幹嗎哪些，我沒實際做過，但估計只能搞點網路之類。