I'm having trouble getting paths to close correctly. The problem appears to be consistent from API 8 (Android 2.2) back through API 4 (Android 1.6). Emulators exhibit the problem, as does my 2.2 phone.
It seems that Android doesn't "think" that a path is closed, even though the path starts (via path.moveTo(...)) and ends (via path.lineTo(...)) at exactly the same coordinates. If I call "path.closePath()" to ensure that the path is closed, an errant line segment is drawn, which indicates to me that the path is "confused" about being open/closed, or about which point is the beginning/ending point in the path. A very short but complete application is included below that demonstrates the problem. Any help with what is wrong would be appreciated. **An image of the results is here:** http://rebeyenterprises.com/BadPath.png The failing code: --------------------- **(testShape.java, in src/pkgs/testShape)** package pkgs.testShape; import android.app.Activity; import android.content.Context; import android.graphics.*; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.*; import android.os.Bundle; import android.view.View; import android.widget.AbsoluteLayout; import android.widget.TextView; @SuppressWarnings({"deprecation"}) // AbsoluteLayout is deprecated; this quiets warnings public class Sandbox extends Activity { // For convenience - just to use the shorter Class name private class Params extends AbsoluteLayout.LayoutParams{Params (int ia,int ib,int ic,int id) {super(ia,ib,ic,id);}} private class TestShapeView extends View { ShapeDrawable mDrawable; public TestShapeView (Context context, Paint.Style style, boolean bClose) { super(context); Path path = new Path(); path.moveTo(50, 0); path.lineTo(50,25); // Rect: l, t, r, b, path.addArc(new RectF( 0, 0, 50, 50), 0, 90); // Angles: Start, Sweep path.lineTo(25,75); path.addArc(new RectF( 25, 50, 75, 100), 180, -90); path.lineTo(75,100); path.addArc(new RectF( 50, 50, 100, 100), 90, -90); path.lineTo(100,25); path.addArc(new RectF( 50, 0, 100, 50), 0, -90); path.lineTo(50,0); // Closes the path - right back where we started if (bClose) path.close(); // Souldn't be necessary - path is closed anyway mDrawable=new ShapeDrawable(new PathShape(path, 110, 110)); // 110, 110 = H, W mDrawable.getPaint().setColor(Color.rgb(0xFF,0xFF,0xFF)); mDrawable.getPaint().setStyle(style); mDrawable.setBounds(0, 0, 110, 110); // Left, Top, Right, Bottom - Location & size } protected void onDraw(Canvas canvas){mDrawable.draw(canvas);} } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AbsoluteLayout layout = new AbsoluteLayout(this); // Params are: W,H,X,Y; TextView t; layout.addView(new TestShapeView(this, Paint.Style.FILL, true ), new Params (110, 110, 0, 10)); t=new TextView(this);t.setText("Closed-FILL"); layout.addView(t,new Params (200, 30, 0, 120)); layout.addView(new TestShapeView(this, Paint.Style.STROKE, true ), new Params (110, 110, 200, 10)); t=new TextView(this);t.setText("Closed-STROKE"); layout.addView(t,new Params (200, 30, 200, 120)); layout.addView(new TestShapeView(this, Paint.Style.FILL, false), new Params (110, 110, 0, 170)); t=new TextView(this);t.setText("NOT Closed-FILL"); layout.addView(t,new Params (200, 30, 0, 290)); layout.addView(new TestShapeView(this, Paint.Style.STROKE, false), new Params (110, 110, 200, 170)); t=new TextView(this);t.setText("NOT Closed-STROKE"); layout.addView(t,new Params (200, 30, 200, 290)); setContentView(layout); } } -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
