java - 自定义 map 标记

Question

我有一个带标记的 map View 。我想知道是否可以向标记添加几个其他字符串值，例如电话号码和网站。我不希望这些在点击标记时显示在信息窗口中。当点击信息窗口时，它会转到所选标记的详细 Activity 。标记标题和代码段作为附加项传递给详细信息 Activity ，我想将另外两个字符串也作为附加项传递。

这是我创建标记的地方:

for(int i = 0; i < Lat.length; i++) {
            Marker marker = map.addMarker(new MarkerOptions()
            .position(new LatLng(Lat[i], Lon[i]))
            .title(Market[i])
            .snippet(Address[i])
            .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));

            list.add(marker);
        }

这是我开始详细 Activity 的地方。

map.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener() {
            @Override
            public void onInfoWindowClick(Marker marker) {
                // Show Details
                Intent intent = new Intent(getActivity(), FarmMarketDetails.class);
                intent.putExtra("selectedTitle", marker.getTitle());
                intent.putExtra("selectedAddress", marker.getSnippet());
                startActivity(intent);
            }
        });

Answer 1

我使用以下代码创建了自定义标记，请检查它是否对您有帮助

 Marker marki=map.addMarker(new MarkerOptions()  
                .icon(BitmapDescriptorFactory.fromBitmap(writeTextOnDrawable(R.drawable.my, "")))
                 .position((new LatLng(latitude,longitude)))) ;

自定义标记的方法

private Bitmap writeTextOnDrawable(int drawableId, String text) {

        Bitmap bm = BitmapFactory.decodeResource(getResources(), drawableId)
                .copy(Bitmap.Config.ARGB_8888, true);

        Typeface tf = Typeface.create("Helvetica", Typeface.BOLD);

        Paint paint = new Paint();

        paint.setColor(Color.BLUE);
        paint.setTypeface(tf);
        paint.setTextAlign(Align.CENTER);
        paint.setTextSize(convertToPixels(context,11));

        Rect textRect = new Rect();
        paint.getTextBounds(text, 0, text.length(), textRect);

        Canvas canvas = new Canvas(bm);

        //If the text is bigger than the canvas , reduce the font size
        if(textRect.width() >= (canvas.getWidth() - 4))     //the padding on either sides is considered as 4, so as to appropriately fit in the text
            paint.setTextSize(convertToPixels(context,7));        //Scaling needs to be used for different dpi's

        //Calculate the positions
        int xPos = (canvas.getWidth() / 2) - 2;     //-2 is for regulating the x position offset

        //"- ((paint.descent() + paint.ascent()) / 2)" is the distance from the baseline to the center.
        int yPos = (int) ((canvas.getHeight() / 2) - ((paint.descent() + paint.ascent()) / 2)) ;  

        canvas.drawText(text, xPos, yPos, paint);

        return  bm;
    }

    public static int convertToPixels(Context context, int nDP)
    {
        final float conversionScale = context.getResources().getDisplayMetrics().density;

        return (int) ((nDP * conversionScale) + 0.5f) ;

    }