根据这句话,我发现:
- registration_ids - 类型字符串数组 - (可选)[消息的接收者]多个注册令牌,最小值1最大1000.
这是我可以发送单个消息的设备令牌的实际限制吗?对主题的消息是否具有相同的限制?
例如:
{
"to": [reg_token_01, reg_token_02, ..., reg_token_1000],
"priority": "high",
"data": {
"title": "Hi Peeps!",
"message": "This is a special message for only for you... More details are available..."
}
}
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一如既往,感谢信息和方向!
当数据为空时是否可以呈现备用组件?我不只是渲染列表或不渲染列表的唯一原因ListHeaderComponent是在两个场景中都是必要的(data.length和!data.length)...
const data = []
<FlatList
contentContainerStyle={styles.list}
data={data} // if empty or !data.length render <ZeroComponent/>
Run Code Online (Sandbox Code Playgroud) firebase.auth().getToken()通过Android设置返回的FCM注册令牌之间是否存在差异:FirebaseInstanceId.getInstance().getToken()?我目前正在使用https://www.npmjs.com/package/firebase,它使用上面的第一种方法来设置auth并生成令牌.尝试发送通知时使用该令牌返回:错误:InvalidRegistration ...
firebase-authentication firebase-cloud-messaging firebase-notifications
我已经通过 create react app 编译了我的应用程序: yarn build //code is minified and obfuscated as expected
然后我通过firebase serve和部署了该应用程序firebase deploy。
我的 firebase.json:
{
"database": {
"rules": "database.rules.json"
},
"hosting": {
"public": "build",
"rewrites": [
{
"source": "**",
"destination": "/index.html"
}
]
}
}
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所有都“几乎按预期”部署,有两个警告:
该结构看起来与包含媒体的构建文件夹完全不同......(字体必需):
我是否设置错误,部署了错误的文件夹,或者可能没有忽略我应该做的事情?公开整个 js 堆栈未缩小和或没有任何混淆似乎非常“不安全”......
再次,一如既往,非常感谢任何方向!
javascript firebase reactjs firebase-hosting create-react-app
通过下面的代码我得到这个错误:
error: Error: [mobx-state-tree] Cannot modify
'AuthenticationStore@<root>', the object is protected and can only be
modified by using an action.
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有问题的代码(生成器):
.model('AuthenticationStore', {
user: types.frozen(),
loading: types.optional(types.boolean, false),
error: types.frozen()
})
.actions(self => ({
submitLogin: flow(function * (email, password) {
self.error = undefined
self.loading = true
self.user = yield fetch('/api/sign_in', {
method: 'post',
mode: 'cors',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({
'user' : {
'email': email,
'password': password
}
})
}).then(res => {
return res.json()
}).then(response => {
self.loading …Run Code Online (Sandbox Code Playgroud) 给定以下结构:
let filteredTasks = [
{status: 'done', other: true},
{status: 'nope', other: false},
{status: 'done', other: true},
{status: 'done', other: true},
{status: 'done', other: false},
{status: 'done', other: false},
{status: 'started', other: false}
]
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和:
let availableFilters = [{status: 'done'}, {other: false}]
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如何过滤此数组以获得以下结果:
filteredTasks =
[{status: 'done', other: false}, {status: 'done', other: false}]
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我的想法和尝试:
let filteredTasks = [
{status: 'done', other: true},
{status: 'nope', other: false},
{status: 'done', other: true},
{status: 'done', other: true},
{status: 'done', other: false},
{status: 'done', …Run Code Online (Sandbox Code Playgroud) 加载地图后,图钉和标记簇图标均可见。只有在缩放到最大之后,所有销钉才会断开,并且簇在缩小时开始按预期工作。
我做错了什么会导致这个问题?
当前设置:
const markerCluster = Leaflet.markerClusterGroup({showCoverageOnHover: false})
//within a loop the markers are created:
() => {
const pinBackground = item.current ? '#db2828' : '#3dcc4a'
const interior = item.pin.icon_url
? `<img style="background: ${item.pin.color_code}" src=${item.pin.icon_url}>`
: `<div class="mapPanelAbbreviation" style="background: ${item.pin.color_code}">${item.pin.abbreviation}</div>`
const pinLayout = `<div class="mapPanelIconContainer" style="background:${pinBackground}">
${interior}
</div>`
let marker = Leaflet.marker(coord, {icon: Leaflet.divIcon({html: pinLayout})})
.bindPopup(`<p class='pinText'>${item.taskId}</p><p class='pinDetails'>${item.title}</p>`)
.addTo(this.currentMap)
.addTo(this.markerGroup)
markerCluster.addLayer(marker)
}
//then the markerCluster is added to the map
this.currentMap.addLayer(markerCluster)
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当地图加载时,我看到创建的图钉(应包含在标记集群中)和显示图钉计数的集群图标:
第一次缩放后:
一如既往,我们非常感谢任何指导和帮助,所以提前致谢!
在以下情况下,如何返回单个数组?
let array = [{
name: "name01",
arr: [
{name: "inner01"},
{name: "inner02"},
{name: "inner03"}
]
}, {
name: "name02",
arr: [
{name: "inner04"},
{name: "inner05"},
{name: "inner06"}
]
}
]
let convo = array.map(item => {
return {
name: item.name,
...item.arr,
};
});
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https://jsfiddle.net/3ng8dc2x/1/
我想得到类似的东西:
[
{name: "name01"},
{name: "inner01"},
{name: "inner02"},
{name: "inner03"},
{name: "name02"},
{name: "inner04"},
{name: "inner05"},
{name: "inner06"}
]
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一如既往地感谢所有方向,所以在此先感谢您!
javascript ×4
firebase ×2
ecmascript-6 ×1
filter ×1
generator ×1
leaflet ×1
mobx ×1
mobx-react ×1
react-native ×1
reactjs ×1