Question

这是我在Google地图中使用的叠加层。我添加了两个标记，并希望为这些标记添加一个监听器。下面是我的叠加类：

protected class MyLocationOverlay extends com.google.android.maps.Overlay {

    @Override
    public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {


        super.draw(canvas, mapView, shadow);
        // Converts lat/lng-Point to OUR coordinates on the screen.
        Point myScreenCoords = new Point();
        mapView.getProjection().toPixels(p, myScreenCoords);



        Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.passenger_map);

        canvas.drawBitmap(bmp, myScreenCoords.x, myScreenCoords.y, null);
        // canvas.drawText("I am here...", myScreenCoords.x, myScreenCoords.y, paint);

        mapView.getProjection().toPixels(p1, myScreenCoords);
        Bitmap bmp1 = BitmapFactory.decodeResource(getResources(), R.drawable.driver_map);

        canvas.drawBitmap(bmp1, myScreenCoords.x, myScreenCoords.y, null);
        // canvas.drawText(" Driver : I am here...", myScreenCoords.x, myScreenCoords.y, paint);
        return true;    
    }

Answer 1

你需要使用ItemizedOverlay类来点击标记。因为你需要覆盖

onTap（）或onTouch（）

用于标记和地图

public boolean onTap (final GeoPoint p, final MapView mapView){
boolean tapped = super.onTap(p, mapView);
if (tapped){            
    //do what you want to do when you hit an item           
}           
else{
    //do what you want to do when you DONT hit an item
    }                   
return true;

}

//你必须拥有这种方法，即使它没有明显做任何事情

@覆盖 protected boolean onTap（int index）{ 返回true; }

这是链接

http://developer.android.com/guide/tutorials/views/hello-mapview.html

OnTap() event on map is not fired

Android: ItemizedOverlay onTouchEvent and onTap overlapping

Show popup above map marker in MapView

Android在谷歌地图上设置标记的监听器

1 个答案: