需要在build里添加依赖
compile 'com.android.support:recyclerview-v7:25.3.1'
布局文件activity_main
在layout下定义一个message.xml布局文件,用来显示RecyclerView里的文字,跟listview的意义差不多
写一个 MyItemonClickListener 接口用来监听点击事件,在里边传入两个参数,第一个是试图,第二是点击的下标
public interface MyItemonClickListener {
void onClick(View view,int position);
}
RecyclerView的适配器类
//RecyclerView.Adapter里写的是优化继承ViewHolder的帮助类 public class ViewAdapter extends RecyclerView.Adapter{ private Context mContext; private List mList=new ArrayList<>(); private MyItemonClickListener myItemOnClickListener; public ViewAdapter(Context context) { this.mContext = context; } //传数组的方法 public void setMessage(List list) { this.mList = list; } //写个方法把接口传过来 public void setMyItemonClickListener(MyItemonClickListener myItemOnClickListener) { this.myItemonClickListener = myItemOnClickListener; } @Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { //打气筒填充我们自定义的message.xml的试图 View view = View.inflate(mContext, R.layout.messgae, null); //优化 final MyViewHolder holder = new MyViewHolder(view); //监听 view.setonClickListener(new View.onClickListener() { @Override public void onClick(View v) { //调用我们自定义接口的方法 myItemOnClickListener.onClick(v, holder.getLayoutPosition()); } }); return holder; } @Override public void onBindViewHolder(MyViewHolder holder, int position) { MyViewHolder viewHolder = holder; viewHolder.textView.setText(mList.get(position)); } @Override public int getItemCount() { return mList.size(); } //ViewHolder优化 static class MyViewHolder extends RecyclerView.ViewHolder { private TextView textView; public MyViewHolder(View itemView) { super(itemView); textView = (TextView) itemView.findViewById(R.id.textView); } } }
在MainActivity的实现
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView_up;
private RecyclerView recyclerView_down;
private List listUp = new ArrayList<>();
private List listDown = new ArrayList<>();
private ViewAdapter adapterUp;
private ViewAdapter adapterDown;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//添加数据
initData();
initView();
}
//添加数据
for (int i = 0; i < 15; i++) {
//默认的我们只给下面的RecyclerView添加了数据
listDown.add("频道管理" + i);
}
}
private void initView() {
recyclerView_up = (RecyclerView) findViewById(R.id.recyclerView_up);
recyclerView_down = (RecyclerView) findViewById(R.id.recyclerView_down);
initUp();
initDown();
}
private void initUp() {
//创建适配器
adapterUp = new ViewAdapter(MainActivity.this);
//添加数据,我们默认创建的时候是空的
adapterUp.setMessage(listUp);
recyclerView_up.setAdapter(adapterUp);
//RecyclerView显示样式
GridLayoutManager gridLayoutManagerUp = new GridLayoutManager(this, 3);
recyclerView_up.setLayoutManager(gridLayoutManagerUp);
//点击监听
adapterUp.setMyItemonClickListener(new MyItemonClickListener() {
@Override
public void onClick(View view, int position) {
Log.e("Up", "上" + position);
//下面的RecyclerView添加当前点击的条目信息并刷新数组
listDown.add(listUp.get(position));
adapterDown.setMessage(listDown);
adapterDown.notifyDataSetChanged();
//从当前数组移除数据并刷新数组
listUp.remove(position);
adapterUp.setMessage(listUp);
adapterUp.notifyDataSetChanged();
}
});
}
private void initDown() {
adapterDown = new ViewAdapter(MainActivity.this);
adapterDown.setMessage(listDown);
recyclerView_down.setAdapter(adapterDown);
GridLayoutManager gridLayoutManagerDown = new GridLayoutManager(this, 3);
recyclerView_down.setLayoutManager(gridLayoutManagerDown);
adapterDown.setMyItemonClickListener(new MyItemonClickListener() {
@Override
public void onClick(View view, int position) {
Log.e("Down", "下" + position);
//下面的RecyclerView添加当前点击的条目信息并刷新数组
listUp.add(listDown.get(position));
adapterUp.setMessage(listUp);
adapterUp.notifyDataSetChanged();
//从当前数组移除数据并刷新数组
listDown.remove(position);
adapterDown.setMessage(listDown);
adapterDown.notifyDataSetChanged();
}
});
}
}
以上所述是小编给大家介绍的Android RecyclerView仿新闻头条的频道管理功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！
