How to Create Dynamically numbered Pin Pointers on

问题:

I want to display some locations on my MapView. These locations will show pins which will have numbers 1,2,3.. so on(Similar to Google maps result but it is A,B,C..). I think it is not feasible to have pins of all numbers.

Is there any way that i can just create a layout with pin background with TextView and I will dynamically put number in TextView and that layout ill use as drawable pin??

Or any other method to achieve this?? Please provide some suggestions.

(I am able to show different drawable pins on MapView.I just want to create drawables dynamically)

回答1:

Solved this.

Inflated the TextView with pin background and dynamically set the position into TextView.

public Drawable createFromView(int positionNumber)
{
    LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    View view = inflater.inflate(R.drawable.pin_icon, null, false);
    TextView tv = (TextView) view.findViewById(R.id.pin_background);
    tv.setText("     "+ (positionNumber+1) );   // +1 since position is starting from 0
    tv.setDrawingCacheEnabled(true);
    tv.layout(0, 0, 50, 50);
    tv.buildDrawingCache();
    Bitmap b = Bitmap.createBitmap(tv.getDrawingCache());
    tv.setDrawingCacheEnabled(false);
    Drawable d = new BitmapDrawable(b);
    return d;
}