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PONew class which extends imageview does not rotate like regular imageview class?
 

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  1. PONew class which extends imageview does not rotate like regular imageview class?
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    <pre><code>package t.circle; import android.app.Activity; import android.content.Context; import android.graphics.Matrix; import android.graphics.PointF; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.FrameLayout; import android.widget.ImageView; public class circle extends Activity implements OnTouchListener { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // IV = (ImageView) findViewById(R.id.IV); fl = (FrameLayout) findViewById(R.id.frame_lo); fl.setOnTouchListener(new LayoutListener()); CV = new CircleView(this); CV.setImageResource(R.drawable.circle); CV.setVisibility(View.INVISIBLE); CV.setOnTouchListener(this); fl.addView(CV); } @Override public boolean onTouch(View v, MotionEvent e) { Log.i("X", String.valueOf(e.getX())); Log.i("Center", String.valueOf(center.x) + "," + String.valueOf(center.y)); CircleView imagev = (CircleView) v; switch (e.getAction() &amp; MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_DOWN: iPt.set(e.getX(), e.getY()); case MotionEvent.ACTION_MOVE: cPt.set(e.getX(), e.getY()); angle = (float) Math.toDegrees(getAngle(center, iPt) - getAngle(center, cPt)); angle += oldAngle; mat.setRotate(-angle, center.x, center.y); break; case MotionEvent.ACTION_UP: oldAngle = angle; break; } imagev.setImageMatrix(mat); Log.i("Angle", String.valueOf(angle)); return true; } class LayoutListener implements OnTouchListener { public boolean onTouch(View v, MotionEvent e) { center.set(e.getX(), e.getY()); CV.setVisibility(View.VISIBLE); int l, t, r, b; l = (int) (e.getX() - 80); r = (int) (e.getX() + 80); t = (int) (e.getY() - 80); b = (int) (e.getY() + 80); CV.setLocation(l, t, r, b); return false; } } class CircleView extends ImageView { public CircleView(Context context) { super(context); } // Set the location public void setLocation(int l, int t, int r, int b) { this.setFrame(l, t, r, b); this.setImageMatrix(mat); } } /** * Get the angle of the current point. * * @param origin * @param point * @return angle in radiant */ private float getAngle(PointF origin, PointF point) { float angle = (float) Math .atan2(point.y - origin.y, point.x - origin.x); if (angle &lt; 0) { angle += 2 * Math.PI; } return angle; } FrameLayout fl; CircleView CV; Matrix mat = new Matrix(); PointF center = new PointF(); PointF iPt = new PointF(); PointF cPt = new PointF(); PointF v1 = new PointF(); PointF v2 = new PointF(); private float angle, oldAngle; } </code></pre> <p>I am trying to rotate the imageview. It works all fine when I use imageview class but it will not work for the imageview I create with my own class which extends the imageview. What did I do wrong?</p>
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