Android谷歌地图v2 moveCamera不起作用 [英] Android google map v2 moveCamera doesn't work

问题描述

我试图像这样控制Google地图相机。

  private void setUpMap（）{
 Log。 e（LOG_TAG，在设置方法中）; 
 mMap.setMyLocationEnabled（true）; 
 LatLng startingPoint = new LatLng（129.13381,129.10372）; 
 mMap.moveCamera（CameraUpdateFactory.newLatLngZoom（startingPoint，16））; 
 Log.e（LOG_TAG，Setup method+（mMapFragment == null））; 
 
  

LogCat打印

in setup method

in setup method false

显示2个日志意味着 mMap.moveCamera（...）被称为

setUpMap（）从这里调用



  private void setUpMapIfNeeded（）{
 mMapFragment =（SupportMapFragment）getSupportFragmentManager（）。findFragmentByTag MFragment.TAG）; 
 if（mMapFragment！= null）{
 mMapFragment.getMapAsync（new OnMapReadyCallback（）{
 @Override 
 public void onMapReady（GoogleMap googleMap）{
 mMap = googleMap ; 
 setUpMap（）; 
} 
}）; 
 
 
 $ / code $ / pre 
 
解决方案
在 LatLng startingPoint = new LatLng（129.13381,129.10372）; 中指定的坐标似乎有点偏离。更详细地说，最大纬度是90度，这是北极（-90是南极）。
 
 
 
结果将是相机将会请尝试使用已知位置的坐标，例如 LatLng startingPoint = new LatLng（55.70,13.19） ; 这会给你瑞典隆德的地位。 
 
 
 
因此，基本上，请修改您的头寸的经纬度坐标。
 
I'm trying to control Google map camera like this
private void setUpMap() {
        Log.e(LOG_TAG, "in setup method");
        mMap.setMyLocationEnabled(true);
        LatLng startingPoint = new LatLng(129.13381, 129.10372);
        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(startingPoint, 16));
        Log.e(LOG_TAG, "in Setup method" + (mMapFragment == null));
    }
LogCat prints

"in setup method"

"in setup method false"

2 log is shown it means mMap.moveCamera(...) is called

setUpMap() call from here
private void setUpMapIfNeeded() {
        mMapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentByTag(MFragment.TAG);
        if (mMapFragment != null) {
            mMapFragment.getMapAsync(new OnMapReadyCallback() {
                @Override
                public void onMapReady(GoogleMap googleMap) {
                    mMap = googleMap;
                    setUpMap();
                }
            });
        }
    }

解决方案
Your coordinates specified at LatLng startingPoint = new LatLng(129.13381, 129.10372); seems to be a bit off. In more detail, the maximum latitude is 90 degrees, which is the north pole (-90 is the south pole).

The result of this will be that the camera will not move to a position which is invalid.

Try using coordinates from a known location, such as LatLng startingPoint = new LatLng(55.70, 13.19); which will give you the position of Lund, Sweden. 

So basically, revise the latitude and longitude coordinates for your position.

                        
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