安卓属性动画集合实现

效果图：

这里的点击事件使用的是Xutils，所以需要导入依赖：implementation ‘org.xutils:xutils:3.5.0’

布局代码：

<?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"
    tools:context=".work_day02"
    android:orientation="vertical"
    >

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/getData"
        android:text="获取数据"
        />
    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/lv"
        >

    </ListView>
</LinearLayout>

Java代码：

package com.example.work_day02;

import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.renderscript.Sampler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.BounceInterpolator;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.xutils.common.Callback;
import org.xutils.http.RequestParams;
import org.xutils.view.annotation.ContentView;
import org.xutils.view.annotation.Event;
import org.xutils.view.annotation.ViewInject;
import org.xutils.x;

import java.util.ArrayList;

@ContentView(R.layout.activity_work_day02)
public class work_day02 extends AppCompatActivity {
    @ViewInject(R.id.lv)
    private ListView listView;
    ArrayList<String> datas = new ArrayList<>();
    MyAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        x.view().inject(this);
        x.Ext.setDebug(true);
        //条目的点击事件
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //获取点击条目的图片控件
                ImageView imageView = view.findViewById(R.id.img);
                //传参
                MyAnimatorSet(imageView);
            }
        });
    }
    @Event(value = R.id.getData,type = View.OnClickListener.class)
    private void MyOnClick(View view){
        //网络获取字符串
        RequestParams params = new RequestParams("http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=10&page=1");
        x.http().get(params, new Callback.CommonCallback<String>() {
            @Override
            public void onSuccess(String result) {
                getJSON(result);
            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {

            }

            @Override
            public void onCancelled(CancelledException cex) {

            }

            @Override
            public void onFinished() {

            }
        });
    }

    /**
     * 解析方法
     * @param json
     */
    public void getJSON(String json){
        try {
            JSONObject object = new JSONObject(json);
            JSONArray data = object.getJSONArray("data");
            for(int i  = 0;i < data.length();i++){
                String pic = data.getJSONObject(i).getString("pic");
                datas.add(pic);
            }
            adapter = new MyAdapter(datas,this);
            listView.setAdapter(adapter);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void MyAnimatorSet(ImageView imageView){
        //平移动画
        ObjectAnimator animator = ObjectAnimator.ofFloat(imageView,"translationX",0, 700);
        //图片滚动动画
        ObjectAnimator animator1 = ObjectAnimator.ofFloat(imageView, "rotation", 0, 360);
        //透明动画
        ObjectAnimator animator2 = ObjectAnimator.ofFloat(imageView, "alpha", 1, 0, 1);
        //伸缩动画
        //创建存储动画的集合
        ObjectAnimator animator3 = ObjectAnimator.ofFloat(imageView, "scaleX", 1f,4f,1f);
        AnimatorSet animatorSet = new AnimatorSet();
        animatorSet.play(animator).with(animator1).with(animator2).after(animator3);//动画集合在一起
        //不同动画设置不同的实现时间
        animator.setDuration(5000);
        animator1.setDuration(3000);
        animator2.setDuration(3000);
        animator3.setDuration(3000);
        //设置插值器
        animator.setInterpolator(new BounceInterpolator());
        animatorSet.start();//启动动画
        //动画集合的监听器
        animatorSet.addListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animation) {

            }

            @Override
            public void onAnimationEnd(Animator animation) {
                //结束后弹出吐司
                Toast.makeText(work_day02.this, "动画结束！！！", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onAnimationCancel(Animator animation) {

            }

            @Override
            public void onAnimationRepeat(Animator animation) {

            }
        });
    }

}

初始化Xutils的类：

package com.example.work_day02;

import android.app.Application;

import org.xutils.x;

public class InitBean extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        x.Ext.init(this);
    }
}

适配器类：

package com.example.work_day02;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

import org.xutils.x;

import java.util.ArrayList;

public class MyAdapter extends BaseAdapter {

    private ArrayList<String> datas;
    private Context context;

    public MyAdapter(ArrayList<String> datas, Context context) {
        this.datas = datas;
        this.context = context;
    }

    @Override
    public int getCount() {
        return datas.size();
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        MyViewHolder holder = null;
        if(convertView == null){
            convertView = View.inflate(context,R.layout.item_me,null);
            holder = new MyViewHolder();
            holder.img = convertView.findViewById(R.id.img);
            convertView.setTag(holder);
        }else{
            holder = (MyViewHolder)convertView.getTag();
        }

        if(holder != null){
            x.image().bind(holder.img, datas.get(position));
        }

        return convertView;
    }
    public class MyViewHolder{
        ImageView img;
    }
}

更详细内容访问此网址：https://www.jianshu.com/p/ee7e3d79006d