So at the moment when i click an itemized overlay item , i just display a simple dialog, i would like to create something more in the lines of the below
How would i go about doing this for the android phone>?
When you override ItemizedOverlay there is protected onTap method. It has item index as parameter. You should override onTap and use this index to get correct data object. Eg:
@Override
protected boolean onTap(int index) {
getItem(index); \\your overlay item
return true;
}
Then you should create custom dialog from code or inflate xml layout, use correct layout params to add it on your MapView:
MapView.LayoutParams params = new MapView.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, point, 0, 0, MapView.LayoutParams.BOTTOM_CENTER);
params.mode = MapView.LayoutParams.MODE_MAP;
MV.addView(popup, params);
MV - your MapView instance; point - your Overlay item GeoPoint; popup - your custom dialog view.
I just found a method to do that: Extend OverlayItem and override getMarker to return a new drawable.
package this.is.funny;import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.ColorFilter; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.graphics.drawable.NinePatchDrawable;
import com.google.android.maps.GeoPoint; import com.google.android.maps.MapView; import com.google.android.maps.OverlayItem;
public class MyOverlayItem extends OverlayItem{ private String title; private Context ctx; private NinePatchDrawable npd; private Rect textBox; private Paint p;
public MyOverlayItem(Context ctx,GeoPoint point, String title, String snippet) { super(point, title, snippet); this.title=title; this.ctx=ctx; p=new Paint(); } @Override public Drawable getMarker(int stateBitset) { return new MyDrawable(); } /** * * I believe this method is the cleaniest way to do what we want. Not sure about it * @author emmanuel * This private class is a custom drawable with some text inside. */ private class MyDrawable extends Drawable{ @Override public void draw(Canvas c) { textBox = new Rect(); //this is ugly p.setFakeBoldText(true); p.setTextSize(16); p.setAlpha(50); p.getTextBounds(title, 0, title.length(), textBox); //p.setAlpha(255); NinePatchDrawable npd; npd=(NinePatchDrawable)
ctx.getResources().getDrawable(R.drawable.geoloc);
npd.setBounds(-(textBox.width()/2+15),-(textBox.height()+30),textBox.width()/2+15,0); npd.draw(c); p.setColor(Color.WHITE); p.setAlpha(255); c.drawText(title,-textBox.width()/2,-30,p); } @Override public int getOpacity() { return PixelFormat.TRANSLUCENT; } @Override public void setAlpha(int alpha) { // TODO Auto-generated method stub } @Override public void setColorFilter(ColorFilter cf) { // TODO Auto-generated method stub } }
}
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