android 和 ios 推送的参数不一样，推送的时候如何给ios设置title

这是给安卓推送的代码

public static void pushByAlias(String title,String message,List<String> alias){
        PushPayload payload =PushPayload.newBuilder()
                                        .setPlatform(Platform.android())
                                        .setAudience(Audience.alias(alias))
                                        .setMessage(Message.newBuilder()
                                        .setMsgContent(message)
                                        .addExtra("from", "JPush").build())
                                        .setNotification(Notification.newBuilder()
                                        .addPlatformNotification(AndroidNotification.newBuilder()
                                                .setTitle(title)
                                                .setAlert(message)
                                                .build())
                                        .build())  
                                        .build(); 
        sendPush(payload);
    }

这是给ios推送的代码

public static void pushByAlias2(String title,String message,List<String> alias){
        PushPayload payload =PushPayload.newBuilder()
                                        .setPlatform(Platform.ios())
                                        .setAudience(Audience.alias(alias))
                                        .setMessage(Message.newBuilder()     
                                        .setMsgContent(message)
                                        .addExtra("from", "JPush").build())
                                        .setNotification(Notification.newBuilder()
                                        .addPlatformNotification(IosNotification.newBuilder()
                                                .setAlert(message).
                                                setBadge(1).
                                                build())
                                        .build())  
                                        .build(); 
        sendPush(payload);
    }

这是一起推送的代码。ios收不到，怎么回事

    public static void pushByAlias(String title,String message,List<String> alias){
        PushPayload payload =PushPayload.newBuilder()
                                        .setPlatform(Platform.android_ios())
                                        .setAudience(Audience.alias(alias))
                                        .setMessage(Message.newBuilder()
                                        .setMsgContent(message)
                                        .addExtra("from", "JPush").build())
                                        .setNotification(Notification.newBuilder()
                                        .addPlatformNotification(AndroidNotification.newBuilder().setTitle(title).setAlert(message).build()).build())  
                                        .build(); 
        sendPush(payload);
    }