RecyclerView-点击切换多种布局

来源：互联网发布：金扎软件多少钱编辑：程序博客网时间：2024/05/17 02:17

布局main

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Button            android:id="@+id/button_tianjia"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="Click"            android:text="添加" />        <Button            android:id="@+id/button_shanchu"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="Click"            android:text="删除" />        <Button            android:id="@+id/button_xianxing"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="Click"            android:text="线性" />        <Button            android:id="@+id/button_wangge"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="Click"            android:text="网格" />        <Button            android:id="@+id/button_pubu"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_weight="1"            android:onClick="Click"            android:text="瀑布流" />    </LinearLayout>    <android.support.v7.widget.RecyclerView        android:id="@+id/recyclerview"        android:layout_width="match_parent"        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView></LinearLayout>

布局 itme

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <TextView        android:id="@+id/textView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="TextView"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:layout_marginTop="20dp" /></RelativeLayout>

代码   MainActivity

private RecyclerView mRecyclerView;private List<String> mList;private MyAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);    adapter = new MyAdapter();    mRecyclerView.setAdapter(adapter);    mList = new ArrayList<>();    for (int i = 0; i < 130; i++) {        mList.add("数据" + i);    }}public void Click(View view){    switch (view.getId()){        case R.id.button_tianjia:            mList.add("添加一个");            adapter.notifyDataSetChanged();            break;        case R.id.button_shanchu:            mList.remove(1);            adapter.notifyDataSetChanged();            break;        case R.id.button_xianxing:            mRecyclerView.setLayoutManager(new LinearLayoutManager(this));            break;        case R.id.button_wangge:            mRecyclerView.setLayoutManager(new GridLayoutManager(this,2));            break;        case R.id.button_pubu:            mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL));            break;    }}
 
适配器   MyAdapter 
private class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {    @Override    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = View.inflate(MainActivity.this, R.layout.item, null);        return new MyViewHolder(view);    }    @Override    public void onBindViewHolder(MyViewHolder holder, int position) {        holder.textview.setText(mList.get(position));    }    @Override    public int getItemCount() {        return mList.size();    }    public class MyViewHolder extends RecyclerView.ViewHolder {        private final TextView textview;        public MyViewHolder(View itemView) {            super(itemView);            textview = (TextView) itemView.findViewById(R.id.textView);        }    }}
线性布局上拉加载更多
//上拉加载mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {    @Override    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {        super.onScrollStateChanged(recyclerView, newState);     //设置加载的状态       // adapter.changeMoreStatus(RecyclerViewAdapter.LOADING_MORE);        //判断到底部的条件        if (newState == RecyclerView.SCROLL_STATE_IDLE && linearLayoutManager.findLastVisibleItemPosition() + 1 == adapter.getItemCount()) {            Log.e("--------->", "到底");            //可以直接addAll            for (int i = 0; i < 30; i++) {                mList.add("测试数据hhhhhhh：" + i);            }          //刷新数据            adapter.notifyDataSetChanged();                   }    }    @Override    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {        super.onScrolled(recyclerView, dx, dy);    }});

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