我已经写了下面的代码来让我的图标旋转到屏幕的中心,而是围绕左上角(即ImageView的原点x = 0,y = 0)旋转。设置ImageView或RotateAnimation的某些属性应该很简单,但我无法弄清楚。如何在中心点上旋转一个android图标?
public class IconPromoActivity extends Activity {
private static final float ROTATE_FROM = 0.0f;
private static final float ROTATE_TO = -10.0f * 360.0f;// 3.141592654f * 32.0f;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ImageView favicon = (ImageView) findViewById(R.id.favicon);
RotateAnimation r; // = new RotateAnimation(ROTATE_FROM, ROTATE_TO);
r = new RotateAnimation(ROTATE_FROM, ROTATE_TO, 0, 0, 40, 0);
r.setDuration((long) 2*1500);
r.setRepeatCount(0);
favicon.startAnimation(r);
}
}
你能解释这一点。这样我们可以根据我们的需要轻松修改。 – Nepster 2015-05-05 07:52:33
这就是我要找的。 – tounaobun 2015-06-04 09:39:33