当前位置:首页 » 法规百科 » 前台规章制度ios

前台规章制度ios

发布时间: 2025-03-17 00:44:27

⑴ 苹果ios如何让软件在前台运行并且亮屏

到设置里面,把屏幕显示时间调为1小时。就好了。

⑵ iOS端从后台进入前台socket怎么重连

直接看sdk头文件即可。

/*! 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);

说得很清楚了,这货是ios7中引入的,如果实现了这货,那原先的版本- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo NS_AVAILABLE_IOS(3_0);就不会被调用。
这货被调用后,你唯一可做的就是执行你的后台代码,然后调用completionHandler(your_result);
你得到的警告就是因为你没调用completionHandler。
至于这里能干吗哪些,我没实际做过,但估计只能搞点网络之类。

热点内容
标志和法规 发布:2025-03-17 07:35:34 浏览:16
中国自然保护区立法研究 发布:2025-03-17 07:35:33 浏览:806
法学生的毕业论文 发布:2025-03-17 07:21:44 浏览:926
弹幕管理条例 发布:2025-03-17 06:31:20 浏览:231
劳动法加班费的规定 发布:2025-03-17 06:04:35 浏览:562
河北省中小学图书馆规章制度 发布:2025-03-17 05:57:11 浏览:152
社会与法给你100万 发布:2025-03-17 05:16:56 浏览:801
肇庆中级人民法院地址 发布:2025-03-17 05:13:05 浏览:691
感谢司法部 发布:2025-03-17 05:12:20 浏览:139
最新铁路安全管理条例 发布:2025-03-17 05:02:25 浏览:1000