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POandroid MapView DrawLine
 

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    <p>I am trying to draw some overlay paths on my mapActivity. </p> <p>This is My ItemizedOverlay Class:</p> <pre><code>package com.state.park; import java.util.ArrayList; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Point; import android.graphics.drawable.Drawable; import com.google.android.maps.GeoPoint; import com.google.android.maps.ItemizedOverlay; import com.google.android.maps.MapView; import com.google.android.maps.Overlay; import com.google.android.maps.OverlayItem; import com.google.android.maps.Projection; public class Flytrap extends ItemizedOverlay&lt;OverlayItem&gt; { private GeoPoint gp1, gp2; private int color; private ArrayList&lt;OverlayItem&gt; mOverlays = new ArrayList&lt;OverlayItem&gt;(); public Flytrap(Drawable defaultMarker){ super(defaultMarker); } public Flytrap(GeoPoint gp1, GeoPoint gp2, int color, MapView mapView, Drawable defaultMarker) { super(boundCenterBottom(defaultMarker)); this.gp1 = gp1; this.gp2 = gp2; this.color = color; } @Override public void draw(Canvas canvas, MapView mapView, boolean shadow) { Projection projection = mapView.getProjection(); Paint paint = new Paint(); Point point = new Point(); projection.toPixels(gp1, point); paint.setColor(color); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setStrokeWidth(5); paint.setAlpha(120); canvas.drawLine(point.x, point.y, point2.x, point2.y, paint); super.draw(canvas, mapView, shadow); } public void addItem(OverlayItem item){ mOverlays.add(item); populate(); } @Override protected OverlayItem createItem(int i) { // TODO Auto-generated method stub return mOverlays.get(i); } @Override public int size() { // TODO Auto-generated method stub return 0; } } </code></pre> <p>And this is the MapActivity that I call it in.</p> <pre><code>ArrayList&lt;Double&gt; lon = new ArrayList&lt;Double&gt;(); ArrayList&lt;Double&gt; lat = new ArrayList&lt;Double&gt;(); ArrayList&lt;GeoPoint&gt; geopoints = new ArrayList&lt;GeoPoint&gt;(); List&lt;Overlay&gt; overlays; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.map); String flytrap = readRawTextFile(getBaseContext(), R.raw.flytrap); getlonlat(flytrap); mapView = (MapView) findViewById(R.id.mapview); mapView.setBuiltInZoomControls(true); mc = mapView.getController(); myLoc = new MyLocationOverlay(this, mapView); mapView.getOverlays().add(myLoc); locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); locListener = new MyLocationListener(); locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener); Drawable d = getResources().getDrawable(R.drawable.icon); for (int i = 1; i &lt; geopoints.size(); i++) { mapView.getOverlays().add(new Flytrap(geopoints.get(i-1), geopoints.get(i), Color.BLUE, mapView, d )); } mapView.invalidate(); } protected boolean isLocationDisplayed() { return myLoc.isMyLocationEnabled(); } protected boolean isRouteDisplayed() { // TODO Auto-generated method stub return false; } </code></pre> <p>Any suggestions of how to display the lines on the map. As of right now it runs. but no overlay is displayed.</p> <p>Thank you.</p>
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