叠加对谷歌的图像映射的Andr​​oid API V2 [英] Overlay an image on google maps android api v2

问题描述

我想使用的GroundOverlay将图像添加到我的地图。我用这个例子从工作

I am trying to use GroundOverlay to add an image to my map. I'm working with the example from

<一个href=\"https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/model/GroundOverlay\" rel=\"nofollow\">https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/model/GroundOverlay

这是考虑这样

GoogleMap map = ...; // get a map.
BitmapDescriptor image = ...; // get an image.
LatLngBounds bounds = ...; // get a bounds
// Adds a ground overlay with 50% transparency.
GroundOverlay groundOverlay = map.addGroundOverlay(new GroundOverlayOptions()
 .image(image)
 .positionFromBounds(bounds)
 .transparency(0.5));

不过，我不知道如何让图像作为bitmapdescriptor。我也不知道怎么输入的LatLngBounds。任何帮助将是AP preciated，唯一的教程，我可以在网上找到是API第1节和似乎不再工作。

However I don't know how to get the image as a bitmapdescriptor. I also don't know how to input the latlngBounds. Any help would be appreciated, the only tutorials I can find online are for API v.1 and no longer seem to work.

推荐答案

<一个href=\"https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/model/BitmapDescriptorFactory\"相对=nofollow> BitmapDesc​​riptorFactory 可以从不同的对象来创建 BitmapDesc​​riptor 给你的，例如

BitmapDescriptorFactory can create BitmapDescriptors for you from various objects, e.g.

BitmapDescriptor image = BitmapDescriptorFactory.fromResource(R.drawable.myimage);

您不需要使用 positionFromBounds 如果你不想。有替代方法可以从中央在米宽经纬度并创建：<一个href=\"https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/model/GroundOverlayOptions#position%28com.google.android.gms.maps.model.LatLng,%20float,%20float%29\"相对=nofollow> GroundOverlayOptions.position 。

You don't need to use positionFromBounds if you don't want to. There are alternative ways to create from central LatLng and width in meters: GroundOverlayOptions.position.

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