问题描述
正如我从文档中了解到的,您启动了一个默认任务(在您的应用程序最小化时运行)和可选的无头任务(在您的应用程序终止时运行)。像这样:
//configure normal background task,set time interval as 15 minutes.
BackgroundFetch.configure({
minimumFetchInterval: 15
},async (taskId) => {
console.log("[BackgroundFetch] taskId: ",taskId);
// Finish,providing received taskId.
BackgroundFetch.finish(taskId);
},async (taskId) => {
BackgroundFetch.finish(taskId);
});
let MyHeadlesstask = async (event) => {
let taskId = event.taskId;
let isTimeout = event.timeout;
if (isTimeout) {
BackgroundFetch.finish(taskId);
return;
}
console.log('[BackgroundFetch Headlesstask] start: ',taskId);
// some task..
BackgroundFetch.finish(taskId);
}
// Register your BackgroundFetch Headlesstask,which also runs every 15 minutes,because of the above configuration of minimumFetchInterval.
BackgroundFetch.registerHeadlesstask(MyHeadlesstask);
我想要的是能够只注册一个 headless 任务,使用 minimumFetchInterval 配置。像这样:
BackgroundFetch.registerHeadlesstask(MyHeadlesstask,{
minimumFetchInterval: 15
});
但我知道 registerHeadlesstask
不接受配置输入。还有其他方法吗?
解决方法
let MyHeadlessTask = async (event) => {
let taskId = event.taskId;
let isTimeout = event.timeout;
if (isTimeout) {
BackgroundFetch.finish(taskId);
return;
}
console.log('[BackgroundFetch HeadlessTask] start: ',taskId);
///// try this ////////
BackgroundFetch.scheduleTask({
taskId: yournewtaskid,forceAlarmManager: true,delay: 5000,periodic: true
});
BackgroundFetch.finish(headlesstaskId);
}
现在在你的新任务中尝试直接工作,或者尝试在你工作的地方再次创建无头任务