android - CameraUpdateFactory.newLatLngBounds 一直不工作

Question

我在 Android 谷歌地图上移动相机时遇到了一些问题。

我有这个功能:

protected void centralizeMapToBounds(final LatLng southwest, final LatLng northeast, final LatLng taxi) {
    final int padding = 30;

    Location loc1 = new Location("");
    loc1.setLatitude(southwest.latitude);
    loc1.setLongitude(southwest.longitude);

    Location loc2 = new Location("");
    loc2.setLatitude(northeast.latitude);
    loc2.setLongitude(northeast.longitude);

    Location loc3 = new Location("");
    loc3.setLatitude(taxi.latitude);
    loc3.setLongitude(taxi.longitude);

    float d1 = loc1.distanceTo(loc2);
    float d2 = loc1.distanceTo(loc3);
    float d3 = loc2.distanceTo(loc3);

    LatLngBounds bounds = null;
    try {


        if(d1 > d2){
            if(d1 > d3){
                ICabDebug.i(TAG, "Maior distancia d1: " + d1);
                if(southwest.latitude > northeast.latitude)
                    bounds = new LatLngBounds(southwest,northeast);
                else
                    bounds = new LatLngBounds(northeast, southwest);
            }else{
                ICabDebug.i(TAG, "Maior distancia d3: " + d3);
                if(northeast.latitude > taxi.latitude)
                    bounds = new LatLngBounds(northeast, taxi);
                else
                    bounds = new LatLngBounds(taxi,northeast);
            }
        }else{
            ICabDebug.i(TAG, "Maior distancia d2: " + d2);
            if(southwest.latitude > taxi.latitude)
                bounds = new LatLngBounds(southwest, taxi);
            else
                bounds = new LatLngBounds(taxi, southwest);
        }


    }catch (Exception e) {
        ICabDebug.i(TAG, e.getMessage());
        ICabDebug.i(TAG, "bounds = null");
        bounds = null;
    }

    final LatLngBounds bounds2 = bounds;

    // Pan to see all markers in view.
    try {
        ICabDebug.i(TAG, "Entro aki no primeiro bounds");
        googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, padding));
    }
    catch (Exception e) {

        if (mapView.getViewTreeObserver().isAlive()) {
            mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

                @SuppressLint("NewApi")
                @Override
                public void onGlobalLayout() {

                    mapView.getViewTreeObserver().removeGlobalOnLayoutListener(this);

                    try {
                        ICabDebug.i(TAG, "northeast ["+ bounds2.northeast.latitude + " / " + bounds2.northeast.longitude + "]");
                        ICabDebug.i(TAG, "southwest ["+ bounds2.southwest.latitude + " / " + bounds2.southwest.longitude + "]");
                        googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds2, padding));
                    }
                    catch (Exception ee) {
                        ICabDebug.i(TAG, "----------------------------");
                        ICabDebug.i(TAG, ee.getMessage());
                        ICabDebug.i(TAG, "----------------------------");
                        googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(taxi, 15));
                    }
                }
            });
        }
    }
}

当我将它与坐标一起使用时，效果完美:(-23.5804166,-46.681909)(-23.4850942,-46.5802326)(-23.5802881,-46.6819049)

但是当我使用下面的坐标时，它会将相机移动到澳大利亚:(-23.5792416,-46.63472729999999)(-23.5436503,-47.4519223)(-23.580264,-46.6818923)

有人可以帮助我吗？谢谢

Answer 1

不确定您想使用问题中的代码实现什么。有点乱。

如果您想要显示包含 3 个 LatLng 的区域，您最好使用

LatLngBounds bounds = LatLngBounds.builder().include(latLng1).include(northeast).include(taxi).build();
map.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, padding));

这将用几行代码替换所有的 ifs 和 try-catches。

顺便说一句。您不应该在代码中进行 try catch 。编程错误不是您捕获并尝试不同的东西，而是更改代码。