Animation结束后自动恢复到原状态

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Button sendButton=(Button)findViewById(R.id.send_Button);
        final Animation animation= AnimationUtils.loadAnimation(this,R.anim.myan);
        animation.setFillAfter(true);
        animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
            }
            @Override
            public void onAnimationEnd(Animation animation) {
                sendButton.clearAnimation();
            }
            @Override
            public void onAnimationRepeat(Animation animation) {
            }
        });
        findViewById(R.id.animationButton).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                    sendButton.startAnimation(animation);
            }
        });
    }
}