谷歌地图 - 用户选择不允许位置 [英] google map - user choses not to allow location
问题描述
我面临的情况是,用户不想让系统使用Google地理位置api将地图居中。
如果用户选择退出使用位置,我需要设置默认值。有没有办法做到这一点?
是的! Google地图使用navigator.geolocation.getCurrentPosition()方法来获取当前位置。此方法允许成功回调(当用户说是)和错误回调(当用户说不)时。检查浏览器是否支持地理位置也很好。下面显示了如何使用它
pre $ if(navigator.geolocation){
navigator.geolocation.getCurrentPosition(hasGeolocation, noGeolocation)
} else {
geolocationNotSupported();
函数hasGeolocation(){
console.log(yeah!)
}
函数noGeolocation(){
console.log(user said no!)
}
函数geolocationNotSupported(){
console.log(此浏览器不支持地理定位)
}
谷歌地图上还有一个例子api docs在google上下文中显示映射使用情况
https://developers.google.com/maps/articles/geolocation
I am faced with a situation where the user does not want to allow the system to use the google location api to center the map on them.
I need to set a default value if the user opts out of using the location. Is there a way to accomplish this?
Yes there is! Google maps uses navigator.geolocation.getCurrentPosition() method to get your current location. This method allows a success callback (when a user says yes) and error callback (when user says no). It is also good to check if the browser supports geolocation. The following shows how to use it
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(hasGeolocation, noGeolocation)
} else {
geolocationNotSupported();
}
function hasGeolocation() {
console.log("yeah!")
}
function noGeolocation() {
console.log("user said no!")
}
function geolocationNotSupported() {
console.log("this browser does not support geolocation")
}
There is also an example on google maps api docs to show this in context of google maps usage https://developers.google.com/maps/articles/geolocation
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