ANDROID_MARS学习笔记_S02_009_Animation_Interpolator

 public class MainActivity extends Activity {
     private Button button = null;
     private ImageView imageView = null;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         imageView = (ImageView) findViewById(R.id.imageViewId);
         button = (Button) findViewById(R.id.scaleButtonId);
         button.setOnClickListener(new AnimationButtonListener());
     }

     private class AnimationButtonListener implements OnClickListener {

         @Override
         public void onClick(View v) {
             /**
              * Animation animation =
              * AnimationUtils.loadAnimation(MainActivity.this, R.anim.alpha);
              * imageView.startAnimation(animation);
              */
             // 声明一个AnimationSet对象
             AnimationSet animationSet = new AnimationSet(false);
             AlphaAnimation alpha = new AlphaAnimation(1.0f, 0.0f);
             alpha.setInterpolator(new DecelerateInterpolator());
             RotateAnimation rotate = new RotateAnimation(0, 360,
                     Animation.RELATIVE_TO_SELF, 0.5f,
                     Animation.RELATIVE_TO_SELF, 0.5f);
             rotate.setInterpolator(new AccelerateInterpolator());
             animationSet.addAnimation(alpha);
             animationSet.addAnimation(rotate);
             animationSet.setDuration(2000);
             animationSet.setStartOffset(500);
             imageView.startAnimation(animationSet);
         }

     }
 }