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接近警报

[英]Proximity Alert

原文 2012-07-12 14:01:25 2 1 android/ google-maps/ gps/ alert/ proximity

I want to make an application for Android 2.2+, utilizing the GPS. 我想利用GPS为Android 2.2+开发应用程序。 Basically I want to be able to set a specific zone in the app, using google maps. 基本上，我希望能够使用Google Maps在应用程序中设置特定区域。

Example: I am walking to the store, as soon as I am x (variable) meters away from my house I want an alarm going off on my phone. 示例：我正走到商店时，只要我离家x（可变）米远，我就希望手机响起警报声。

I googled and saw that you can use proximity alerts to get a notification when you are close to a friends house or something like that. 我在Google上搜索后发现，当您靠近朋友之家或类似的地方时，可以使用邻近警报来接收通知。 They used specific coordinates for this. 他们为此使用了特定的坐标。 I want to be able to draw a line on a map or use a street name, and as soon as i cross that line i want an alarm to go off. 我希望能够在地图上画一条线或使用街道名称，一旦我越过那条线，我就想响起警报。 If anyone could point me to some tutorial for that part or give some advice, that would be great. 如果有人可以指出该部分的教程或提出建议，那将很棒。

1 个解决方案

I think you need to map your line in google maps yourself with some formula. 我认为您需要在Google地图中用一些公式自己绘制线。

Proximity alerts work with a radius. 接近警报具有一定的半径。 You might need to set up multiple points with a small radius along your line. 您可能需要沿线设置半径较小的多个点。

You will get either the entering Intent or the exiting intent. 您将获得输入意图或出口意图。

http://developer.android.com/reference/android/location/LocationManager.html#KEY_PROXIMITY_ENTERING http://developer.android.com/reference/android/location/LocationManager.html#KEY_PROXIMITY_ENTERING