CFBundleAllowMixedLocalizations CFBundleLocalizations zh_CN IDEPreferLogStreaming NSAppTransportSecurity NSAllowsArbitraryLoads NSLocalNotificationUsageDescription NSLocalNotificationUsageDescription 需要通知权限以便发送新消息通知 NSUserNotificationUsageDescription 需要通知权限以便发送新消息通知 UIBackgroundModes remote-notification