ObjectAnimator平移并透明动画

布局文件

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.gjl.myanimator.MainActivity">

    <Button
        android:id="@+id/translate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="平移动画"
        />

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="true"
        android:src="@mipmap/ic_launcher"/>

LinearLayout>

MainActivity.java

package com.example.administrator.day_13;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final ImageView img = (ImageView) findViewById(R.id.image);

        img.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "hello", Toast.LENGTH_SHORT).show();
            }
        });

        Button bt = (Button) findViewById(R.id.translate);
        bt.setOnClickListener(new View.OnClickListener() {
            private static final String TAG = "MainActivity";

            @Override
            public void onClick(View v) {
                ObjectAnimator translationX = ObjectAnimator.ofFloat(img, "translationX", 0, 300);
                //创建透明度动画
                ObjectAnimator alpha = ObjectAnimator.ofFloat(img, "alpha", 1.0f, 0f);
                //动画集合
                AnimatorSet set = new AnimatorSet();
                //添加动画
                set.play(translationX).with(alpha);
                //设置时间等
                set.setDuration(5000);
                set.start();
                //动画监听
                set.addListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        super.onAnimationEnd(animation);
                        img.setVisibility(View.GONE);
                    }

                    @Override
                    public void onAnimationRepeat(Animator animation) {
                        super.onAnimationRepeat(animation);
                    }

                    @Override
                    public void onAnimationStart(Animator animation) {
                        super.onAnimationStart(animation);
                    }
                });
            }
        });
    }
}