問(wèn)題描述
啟用 GPS 后，需要一些時(shí)間才能準(zhǔn)備好 GPS.所以使用這個(gè)代碼可能會(huì)得到一個(gè)過(guò)時(shí)的位置:位置 = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);我無(wú)法使用已過(guò)期的位置.如何獲得我需要的位置?
After GPS is enabled, it will take some time before the GPS is ready. So use this code may get a location that is out of date: location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); I can't use the location that is out of date. How can I get the location that I need?
這是一個(gè)類(lèi)似的問(wèn)題:Android:getLastKnownLocation 過(guò)期 - 如何強(qiáng)制位置刷新?
從中，我可以使用 LocationListener 獲取更新的位置，該位置應(yīng)該不會(huì)過(guò)時(shí).這是正確的.但是我該如何處理這種情況:
From it, I can use LocationListener to get the updated location, which should be not out of date. It's correct. But how can I handle this case:
我已經(jīng)啟用了 GPS，然后啟動(dòng)我的應(yīng)用程序.如果我呆在一個(gè)地方不動(dòng)，那么 onLocationChanged() 將不會(huì)被調(diào)用.所以不能用這個(gè)方法來(lái)判斷getLastKnownLocation()的返回值是不是過(guò)期了?
I have already enabled GPS, and then start my app. If I stay at one place and don't move, then onLocationChanged() won't be called. So I can't use this method to judge whether the return value of getLastKnownLocation() is not out-of-date?
有什么想法嗎?
推薦答案
如何獲取未過(guò)期的位置?
How to get location that isn't out of date?
您調(diào)用 requestLocationUpdates() 的 minTime 為 1000 毫秒，對(duì)于 onLocationChanged() 中的每個(gè) Location，您調(diào)用 getAccuracy().如果您可以接受準(zhǔn)確度，請(qǐng)調(diào)用 removeUpdates().
You call requestLocationUpdates() with the minTime of 1000 ms, for every Location in onLocationChanged(), you call getAccuracy(). If the accuracy is acceptable for you, call removeUpdates().
所以我不能用這個(gè)方法來(lái)判斷getLastKnownLocation()的返回值是否過(guò)時(shí)
So I can't use this method to judge whether the return value of getLastKnownLocation() is not out-of-date
我認(rèn)為它返回的 Location 對(duì)象將包含一個(gè) 時(shí)間戳.您可以為現(xiàn)在與位置的 getTime()
I think the Location object that it returns will contain a time stamp. You can set a tolerance for the time difference between now and the Location's getTime()
這篇關(guān)于如何獲取未過(guò)期的位置?的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！