android-基础编程-RecyclerView

Posted 2020-09-02 zCoderJoy

以后android-基础编程*都是控件demo里面的，不再累赘重写。直接介绍控件使用。

RecyclerView is a more advanced and flexible version of ListView. This widget is a Container for large sets of views that can be recycled and scrolled very efficiently.RecyclerView从2014年发布.位于android.support.v7.widget.RecyclerView中。

1.android studio配置RecyclerView库代码

在gradle中加入

compile \'com.android.support:recyclerview-v7:23.+\'

2.定义布局中使用

<android.support.v7.widget.RecyclerView
        android:id="@+id/recycle_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        
</android.support.v7.widget.RecyclerView>

还要recycleview的item的布局：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:background="#44ff0000"
    android:layout_height="wrap_content" >
    <TextView
        android:id="@+id/id_num"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:gravity="center"
        android:text="1" />
</FrameLayout>

3.在RcyclerViewActi中使用

a.加载view布局：

recyclerView = (RecyclerView) findViewById(R.id.recycle_view);

 

b.设置布局管理LayoutManager

recyclerView.setLayoutManager(new LinearLayoutManager(this));

目前SDK中提供了三种自带的LayoutManager，分别是线程、网格、瀑布式布局管理器:

• LinearLayoutManager

• GridLayoutManager

• StaggeredGridLayoutManager

c.配置数据源

adapter = new RecyclerAdapter(this);
adapter.setData(mDatas);
//必须指定adaoter
recyclerView.setAdapter(adapter);

 4.点击事件，recycler不支持点击事件，需要自己实现

 a.在adapter定义接口实现如下：

public static interface OnRecyclerViewItemClickListener {
        void onItemClick(View view , int pos);
    }

    // 2 添加接口和设置接口的方法
    private OnRecyclerViewItemClickListener mOnItemClickListener = null;
    public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) {
        this.mOnItemClickListener = listener;
  }

b.adater implement view的点击事件

@Override
public void onClick(View v) {
        //Toast.makeText(get, "默认Toast样式").show();
        Log.d("zcx","test");
        if (mOnItemClickListener != null) {
            //调用onitemclick
            mOnItemClickListener.onItemClick(v,1);
}

c.调用onitemclick

adapter.setOnItemClickListener(new RecyclerAdapter.OnRecyclerViewItemClickListener()
        {
            @Override
            public void onItemClick(View view, int pos) {
                //DO your fucking bussiness here!
                adapter.addData(1);
                Toast.makeText(getApplicationContext(),"zcx"+pos,Toast.LENGTH_LONG).show();
            }
 });

5.item的动画效果：

recyclerView.setItemAnimator(new DefaultItemAnimator());

最后的实验结果如下：