1.首先添加一个布局listview
代码语言：javascript复制<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
//android:divider="@null"去掉listview分割线
<ListView
android:id="@ id/redpageList"
android:divider="@null"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>2.创建一个activity加载listview布局
代码语言：javascript复制public class RedPageActivity extends Activity {
private ListView lv;
//判断复用问题的map int坐标 bool为是否加载过 true为存在 falsely不存在
private Map<Integer,Boolean> selectedMap=new HashMap<>();
//提供了一种关于显示的通用信息，如显示大小，分辨率和字体
DisplayMetrics dm = new DisplayMetrics();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//加载listview布局
setContentView(R.layout.activity_redpage);
//获取listview
lv=(ListView)findViewById(R.id.redpageList);
//初始化map的数据 都为false
for (int i = 0; i < 10; i ) {
selectedMap.put(i, false);
}
getWindowManager().getDefaultDisplay().getMetrics(dm);
//获取系统宽度
System.out.println("dm" dm.widthPixels);
//创建的adapter
RedpageActivityAdapter redpageAdapter=new RedpageActivityAdapter(this,selectedMap,dm);
//给listview设置适配器
lv.setAdapter(redpageAdapter);
//点击事件
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
System.out.println("aaa" position);
//判断复用问题
//不存在就put
if (!selectedMap.containsKey(position)){
selectedMap.put(position,true);
}
else{
//存在就改变
boolean isCheck=selectedMap.get(position);
selectedMap.put(position,!isCheck);
}
RedpageActivityAdapter.ViewHolder viewHolder = (RedpageActivityAdapter.ViewHolder) parent.getTag();
//一个属性动画
ObjectAnimator animator = ObjectAnimator.ofFloat(view.findViewById(R.id.redup), "translationX", 0, -(dm.widthPixels));
ObjectAnimator animator2 = ObjectAnimator.ofFloat(view.findViewById(R.id.redback), "translationX", 0, -(dm.widthPixels));
AnimatorSet animSet=new AnimatorSet();
animSet.playTogether(animator,animator2);
animSet.setDuration(400);
animSet.start();
}
});
}
}3创建RedpageActivityAdapter
代码语言：javascript复制public class RedpageActivityAdapter extends BaseAdapter {
//数据集合
private List arrayList=new ArrayList();
//上下文对象
private Context context;
private Map<Integer,Boolean> map;
DisplayMetrics dm;
public RedpageActivityAdapter(Context context,Map<Integer,Boolean> map,DisplayMetrics dm) {
this.context=context;
this.map=map;
this.dm=dm;
System.out.println("dm" dm);
//一些假数据
for (int i=0;i<10;i ){
arrayList.add("zzz" i);
}
}
//集合的长度
@Override
public int getCount() {
return arrayList!=null&&arrayList.size()>0?arrayList.size():0;
}
//获取item
@Override
public Object getItem(int position) {
return arrayList!=null&&arrayList.size()>0?arrayList.get(position):null;
}
//根据位置获取item
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView==null){
holder = new ViewHolder();
convertView = LayoutInflater.from(context).inflate(R.layout.adapter_red_page_fragment, null);
holder.relative=(RelativeLayout) convertView.findViewById(R.id.relative);
AbsListView.LayoutParams params=new AbsListView.LayoutParams((int)(dm.widthPixels-20*dm.density),(int)(dm.widthPixels-20*dm.density)/2);
holder.relative.setLayoutParams(params);
holder.redaon=(ImageView) convertView.findViewById(R.id.redaon);
holder.redback=(ImageView) convertView.findViewById(R.id.redback);
holder.redup=(ImageView) convertView.findViewById(R.id.redup);
holder.textView=(TextView)convertView.findViewById(R.id.textView);
// holder.relative.setOnClickListener(new View.OnClickListener() {
// @Override
// public void onClick(View v) {
//
// int index=((ViewGroup)v.getParent()).indexOfChild(v);
// System.out.println("aaaa" index);
// System.out.println("aaaa" v.getId());
// float curTranslationX = v.findViewById(R.id.redup).getTranslationX();
// ObjectAnimator animator = ObjectAnimator.ofFloat(v.findViewById(R.id.redup), "translationX", curTranslationX, -600f);
// ObjectAnimator animator2 = ObjectAnimator.ofFloat(v.findViewById(R.id.redback), "translationX", curTranslationX, -500f);
//// animator.setDuration(5000);
//// animator.start();
// AnimatorSet animSet = new AnimatorSet();
// animSet.playTogether(animator,animator2);
// animSet.setDuration(500);
// animSet.start();
// }
// });
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();//取出ViewHolder对象
}
//holder.redup.setImageResource(R.id.redup);
holder.textView.setText(getItem(position).toString());
boolean flag=map.get(position);
if(flag){
//移动当前的
ObjectAnimator animator = ObjectAnimator.ofFloat(holder.redup, "translationX", 0, -(dm.widthPixels));
ObjectAnimator animator2 = ObjectAnimator.ofFloat(holder.redback, "translationX", 0, -(dm.widthPixels));
AnimatorSet animSet=new AnimatorSet();
animSet.playTogether(animator,animator2);
animSet.setDuration(0);
animSet.start();
}else {
//原始位置
ObjectAnimator animator = ObjectAnimator.ofFloat(holder.redup, "translationX", 0, -0);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(holder.redback, "translationX", 0, -0);
AnimatorSet animSet=new AnimatorSet();
animSet.playTogether(animator,animator2);
animSet.setDuration(0);
animSet.start();
}
return convertView;
}
//自定义viewholder用于初始化话控件
public class ViewHolder {
private RelativeLayout layout;
public ImageView redback;
public ImageView redaon;
public ImageView redup;
public TextView textView;
RelativeLayout relative;
}
}4.listview中的小布局
代码语言：javascript复制<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@ id/relative"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp"
>
<ImageView
android:id="@ id/redback"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/redback"
/>
<ImageView
android:id="@ id/redaon"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/redaon"
android:gravity="center_vertical"
android:layout_margin="10dp"
/>
<!--android:layout_centerVertical="true"-->
<ImageView
android:id="@ id/redup"
android:layout_marginRight="100dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/redup"
/>
<TextView
android:id="@ id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
/>
<TextView
android:id="@ id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
android:text="44444444"
android:layout_below="@ id/textView"
/>
</RelativeLayout>大概效果
