RecyclerView使用Dome
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很好理解，套用即可
import com.example.recyclerview.SimpleAdapter.OnItemClickListener;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.support.v7.widget.DefaultItemAnimator;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Toast;public class MainActivity extends Activity { private RecyclerView mRecyclerView; private List<String> mDatas; private SimpleAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initDatas(); initView(); mAdapter=new SimpleAdapter(this, mDatas); mRecyclerView.setAdapter(mAdapter); //>>>>>>设置垂直布局 》》 布局管理 LinearLayoutManager llm=new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false); mRecyclerView.setLayoutManager(llm); // >>添加item分界线 // mRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST)); //设置动画,当添加数据，删除数据时会有动画效果 mRecyclerView.setItemAnimator(new DefaultItemAnimator()); //接口回调 mAdapter.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemLongClick(View view, int position) { // TODO Auto-generated method stub Toast.makeText(MainActivity.this, "Long click:"+position, Toast.LENGTH_SHORT).show(); } @Override public void onItemClick(View view, int position) { // TODO Auto-generated method stub Toast.makeText(MainActivity.this, "click:"+position, Toast.LENGTH_SHORT).show(); } }); } private void initView() { // TODO Auto-generated method stub mRecyclerView=(RecyclerView) findViewById(R.id.id_recycleView); } private void initDatas() { // TODO Auto-generated method stub mDatas=new ArrayList<String>(); for(int i='A';i<='z';i++){ //int类型转化为char mDatas.add(""+(char)i); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); switch(id){ case R.id.action_gridView: //垂直网格布局 mRecyclerView.setLayoutManager(new GridLayoutManager(this, 3 )); break; case R.id.hor_gridView: //水平网格布局 mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(5, StaggeredGridLayoutManager.HORIZONTAL)); break; case R.id.action_listView: //listview mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); break; case R.id.action_puBuLiu: //瀑布流 Intent intent=new Intent(this,PuBuLiuActivity.class); startActivity(intent); break; case R.id.action_add: mAdapter.addDatas(1); break; case R.id.action_delect: mAdapter.deleteData(1); break; } return super.onOptionsItemSelected(item); }}SimpleAdapter
import java.util.List;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.RecyclerView.ViewHolder;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnLongClickListener;import android.view.ViewGroup;import android.widget.TextView;public class SimpleAdapter extends RecyclerView.Adapter<MyViewHolder> { private LayoutInflater mInflater; private Context context; protected List<String> mDatas; //定义一个监听事件接口，拱外部调用 回调 public interface OnItemClickListener{ void onItemClick(View view,int position); void onItemLongClick(View view,int position); } private OnItemClickListener mOnItemClickListener; //供外部调用此方法，进行回调接口 public void setOnItemClickListener(OnItemClickListener listener){ this.mOnItemClickListener=listener; } public SimpleAdapter(Context context,List<String> datas) { this.context=context; this.mDatas=datas; mInflater=LayoutInflater.from(context); } @Override public int getItemCount() { // TODO Auto-generated method stub return mDatas.size(); } @Override public void onBindViewHolder(final MyViewHolder holder, final int position) { // TODO Auto-generated method stub holder.tv.setText(mDatas.get(position));//调用事件》》当点击时，再被系统监听，调用定义的事件方法，传递给外部也调用了接口的Activity，故Activity可做出响应 setUpItemEvent(holder); } protected void setUpItemEvent(final MyViewHolder holder) { if(mOnItemClickListener!=null){ holder.itemView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub //传入布局中的位置 int LayoutPosition=holder.getLayoutPosition(); mOnItemClickListener.onItemClick(holder.itemView, LayoutPosition); } }); holder.itemView.setOnLongClickListener(new OnLongClickListener() { @Override public boolean onLongClick(View v) { int LayoutPosition=holder.getLayoutPosition(); mOnItemClickListener.onItemLongClick(holder.itemView, LayoutPosition); return false; } }); } } @Override public MyViewHolder onCreateViewHolder(ViewGroup arg0, int arg1) { // TODO Auto-generated method stub View view =mInflater.inflate(R.layout.item_main, arg0, false); MyViewHolder ViewHolder=new MyViewHolder(view); return ViewHolder; }//添加数据的方法public void addDatas(int position){ mDatas.add(position,"insert One"); //不是notifyDataSetChanged() notifyItemInserted(position);} //删除数据的方法public void deleteData(int position){ mDatas.remove(position); notifyItemRemoved(position);}}class MyViewHolder extends ViewHolder{ TextView tv; public MyViewHolder(View arg0) { super(arg0); tv=(TextView) arg0.findViewById(R.id.id_tv); }}PuBuLiuActivity
import java.util.ArrayList;import java.util.List;import com.example.recyclerview.SimpleAdapter.OnItemClickListener;import android.app.Activity;import android.os.Bundle;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.view.Menu;import android.view.MenuItem;import android.view.View;public class PuBuLiuActivity extends Activity { private RecyclerView mRecyclerView; private List<String> mDatas; private PuBuLiuAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initDatas(); initView(); mAdapter=new PuBuLiuAdapter(this, mDatas); mRecyclerView.setAdapter(mAdapter); //>>>>>>设置垂直布局 》》 布局管理 // LinearLayoutManager llm=new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false); // mRecyclerView.setLayoutManager(llm); // >>添加item分界线 // mRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST)); //瀑布流布局 mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL)); //监听事件 mAdapter.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemLongClick(View view, int position) { // 长按删除 mAdapter.deleteData(position); } @Override public void onItemClick(View view, int position) { // } }); } private void initView() { // TODO Auto-generated method stub mRecyclerView=(RecyclerView) findViewById(R.id.id_recycleView); } private void initDatas() { // TODO Auto-generated method stub mDatas=new ArrayList<String>(); for(int i='A';i<='z';i++){ //int类型转化为char mDatas.add(""+(char)i); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); switch(id){ } return super.onOptionsItemSelected(item); }}PuBuLiuAdapter
import java.util.ArrayList;import java.util.List;import android.content.Context;import android.view.ViewGroup.LayoutParams;public class PuBuLiuAdapter extends SimpleAdapter { //瀑布流高度 private List<Integer> mHeight; public PuBuLiuAdapter(Context context,List<String> datas) { //调用父类，所以很多东西可以删去，父类有的，子类可以删掉。 //也就有了接口事件的能力，有点击监听了 super(context,datas); mHeight=new ArrayList<Integer>(); for(int i=0;i<mDatas.size();i++){ mHeight.add((int) (100+Math.random()*300)); } } @Override public void onBindViewHolder(MyViewHolder holder, int position) { // TODO Auto-generated method stub //设置瀑布流高度 LayoutParams lp=(LayoutParams) holder.itemView.getLayoutParams(); lp.height=mHeight.get(position); holder.itemView.setLayoutParams(lp); holder.tv.setText(mDatas.get(position)); setUpItemEvent(holder); }}import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Rect;import android.graphics.drawable.Drawable;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.util.Log;import android.view.View;/** * This class is from the v7 samples of the Android SDK. It's not by me! * <p/> * See the license above for details. */public class DividerItemDecoration extends RecyclerView.ItemDecoration{ private static final int[] ATTRS = new int[] { android.R.attr.listDivider }; public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL; public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL; private Drawable mDivider; private int mOrientation; public DividerItemDecoration(Context context, int orientation) { final TypedArray a = context.obtainStyledAttributes(ATTRS); mDivider = a.getDrawable(0); a.recycle(); setOrientation(orientation); } public void setOrientation(int orientation) { if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) { throw new IllegalArgumentException("invalid orientation"); } mOrientation = orientation; } @Override public void onDraw(Canvas c, RecyclerView parent) { Log.v("recyclerview - itemdecoration", "onDraw()"); if (mOrientation == VERTICAL_LIST) { drawVertical(c, parent); } else { drawHorizontal(c, parent); } } public void drawVertical(Canvas c, RecyclerView parent) { final int left = parent.getPaddingLeft(); final int right = parent.getWidth() - parent.getPaddingRight(); final int childCount = parent.getChildCount(); for (int i = 0; i < childCount; i++) { final View child = parent.getChildAt(i); android.support.v7.widget.RecyclerView v = new android.support.v7.widget.RecyclerView( parent.getContext()); final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child .getLayoutParams(); final int top = child.getBottom() + params.bottomMargin; final int bottom = top + mDivider.getIntrinsicHeight(); mDivider.setBounds(left, top, right, bottom); mDivider.draw(c); } } public void drawHorizontal(Canvas c, RecyclerView parent) { final int top = parent.getPaddingTop(); final int bottom = parent.getHeight() - parent.getPaddingBottom(); final int childCount = parent.getChildCount(); for (int i = 0; i < childCount; i++) { final View child = parent.getChildAt(i); final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child .getLayoutParams(); final int left = child.getRight() + params.rightMargin; final int right = left + mDivider.getIntrinsicHeight(); mDivider.setBounds(left, top, right, bottom); mDivider.draw(c); } } @Override public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) { if (mOrientation == VERTICAL_LIST) { outRect.set(0, 0, 0, mDivider.getIntrinsicHeight()); } else { outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0); } }} 0 0
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