Android积分签到上移消失动画效果

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.AnimationSet;
import android.view.animation.TranslateAnimation;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
 private ImageView mSignIn;
 private ImageView redDot;
 private TextView signSuccess;
 private AnimationSet set;
 private String isSign;
 private TextView textView;
 private Handler mHandler = new Handler() {
 private int i=100;
 public void handleMessage(android.os.Message msg) {
  switch (msg.what) {
  case 1:// 签到
   i = i+100;
   mSignIn.setImageResource(R.drawable.icon_signed);//已签到
   redDot.setVisibility(View.GONE);//圆点隐藏
   // start平移和渐变动画
   signSuccess.startAnimation(set);
   signSuccess.setVisibility(View.GONE);
   textView.setText("当前积分:"+i);
   // mSignIn.setClickable(false);
   break;

  default:
   break;
  }
 }
 };
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 mSignIn = (ImageView) findViewById(R.id.iv_sign);//签到
 redDot = (ImageView) findViewById(R.id.iv_redpoint);//显示未签到的红圆点
 textView = (TextView) findViewById(R.id.tv_score);//积分
 //签到添加积分动画文本
 signSuccess = (TextView) findViewById(R.id.iv_sign_success);
 // 　获取签到成功图片的位置
 int left = signSuccess.getLeft();
 int top = signSuccess.getTop();
 // 创建平移和渐变的动画集合
 // 定义一个平移动画对象
 TranslateAnimation translate = new TranslateAnimation(left, left, top, top - 100);
 translate.setDuration(2000);
 //translate.setRepeatCount(1);
 // 渐变动画
 AlphaAnimation alpha = new AlphaAnimation(1, 0);
 alpha.setDuration(2000);
 alpha.setFillAfter(true);
 // 创建动画集合，将平移动画和渐变动画添加到集合中，一起start
 set = new AnimationSet(false);
 set.addAnimation(translate);
 set.addAnimation(alpha);
 }
 /**
 * 签到
 * @param v
 */
 public void signIn(View v) {
   // if (!TextUtils.isEmpty(isSign)) {
    // if ("0".equals(isSign)) {// 0代表未签到
    signSuccess.setVisibility(View.VISIBLE);
    // mHandler.sendEmptyMessage(1);
    Message message = new Message();
    message.what = 1;
    mHandler.sendMessage(message);
    // }
   // }
 }

}

/**
 * Constructor to use when building a TranslateAnimation from code
 *
 * @param fromXDelta Change in X coordinate to apply at the start of the
 * animation
 * @param toXDelta Change in X coordinate to apply at the end of the
 * animation
 * @param fromYDelta Change in Y coordinate to apply at the start of the
 * animation
 * @param toYDelta Change in Y coordinate to apply at the end of the
 * animation
 */
 public TranslateAnimation(float fromXDelta, float toXDelta, float fromYDelta, float toYDelta) {
 mFromXValue = fromXDelta;
 mToXValue = toXDelta;
 mFromYValue = fromYDelta;
 mToYValue = toYDelta;
 }