CameraUpdateFactory.newLatLngBounds不workinf所有的时间 [英] CameraUpdateFactory.newLatLngBounds is not workinf all the time

问题描述

我有一些problema在Android谷歌地图移动相机。

I'm having some problema to move camera on android google maps.

我有一个功能：

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));
                    }
                }
            });
        }
    }
}

当我使用它的坐标完美的作品：
（-23.5804166，-46.681909）
（-23.4850942，-46.5802326）
（-23.5802881，-46.6819049）

When I use it with the coordinate works perfect: (-23.5804166,-46.681909) (-23.4850942,-46.5802326) (-23.5802881,-46.6819049)

但是当我使用下面的坐标，它移动相机澳大利亚：
（-23.5792416，-46.63472729999999）
（-23.5436503，-47.4519223）
（-23.580264，-46.6818923）

but when i use with the coordinate below, it moves the camera to Australia: (-23.5792416,-46.63472729999999) (-23.5436503,-47.4519223) (-23.580264,-46.6818923)

有人能帮助我吗？谢谢

推荐答案

不知道你想达到与你的问题code什么。这是一个有点杂乱。

Not sure what you want to achieve with the code in your question. It's a bit messy.

的如果的要显示含3 LatLngs区，您使用的是更好的。

If you want to show area containing 3 LatLngs, you are better of using

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

这将几行替换所有的IFS和尝试，渔获物。

This would replace all your ifs and try-catches with a few lines.

顺便说一句。你不应该在你的code做的尝试，渔获物。一个编程错误是不是你捕获并尝试不同的东西，但改变code来代替。

Btw. You shouldn't be doing try-catches in your code. A programming error is not something you catch and try something different, but change the code instead.

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