package com.example.animator;

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

public class MainActivity extends AppCompatActivity {

    private Button but;
    private ImageView img;

    @Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main
 
);
        //初始化控制元件
but = (Button) findViewById(R.id.but);
        img = (ImageView) findViewById(R.id.img);

        //圖片點選事件
img.setOnClickListener(new View.OnClickListener() {
            @Override
public void onClick(View view) {

                Toast.makeText(MainActivity.this, "我在這裡", Toast.LENGTH_SHORT
 
).show();
            }
        });

        //演示屬性動畫
but.setOnClickListener(new View.OnClickListener() {
            @Override
public void onClick(View view) {
                //建立平移動畫
ObjectAnimator translationX = ObjectAnimator.ofFloat(img,"translationX",0,300);
                //建立透明動畫
ObjectAnimator alpha = ObjectAnimator.ofFloat(img, "alpha", 1.0f, 0f);
                //動畫集合
AnimatorSet set = new AnimatorSet();
                //新增動畫
set.play(translationX).with(alpha);
                //動畫耗時
set.setDuration(5000);
                //開啟
set.start();

                //動畫監聽
set.addListener(new AnimatorListenerAdapter() {
                    @Override//動畫結束時
public void onAnimationEnd(Animator animation) {
                        super.onAnimationEnd(animation);
                    }

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

                    @Override//動畫開始時
public void onAnimationStart(Animator animation) {
                        super.onAnimationStart(animation);
                    }
                });
            }
        });

    }

}

--------------------------------xml檔案-----------------------------

<?xml version="1.0" encoding="utf-8"?>
<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.example.animator.MainActivity">

   <Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="動畫演示"
android:id="@+id/but"/>
    <ImageView
android:layout_marginTop="50dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/img"
android:src="@mipmap/ic_launcher"/>




</LinearLayout>