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);
        }

    }
}