compile 'com.android.support:recyclerview-v7:24.1.1'
package com.example.myshop;
import android.support.v7.app.AppCompatActivity;
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.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class RecyclerviewActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private List<String> datas=new ArrayList<>();
private MyAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recyclerview);
mRecyclerView= (RecyclerView) findViewById(R.id.recyclerView);
initDatas();
mAdapter=new MyAdapter(datas);
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST));
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mAdapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
@Override
public void onClick(View c, int position, String city) {
Toast.makeText(RecyclerviewActivity.this, "city:"+city+",position:"+position, Toast.LENGTH_SHORT).show();
}
});
}
private void initDatas(){
datas.add("New York");
datas.add("Boston");
datas.add("Washington");
datas.add("San Francisco");
datas.add("Chicago");
datas.add("Phoneix");
datas.add("New York");
datas.add("Boston");
datas.add("Washington");
datas.add("San Francisco");
datas.add("Chicago");
datas.add("Phoneix");
datas.add("New York");
datas.add("Boston");
datas.add("Washington");
datas.add("San Francisco");
datas.add("Chicago");
}
}
package com.example.myshop;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.TextView;
import java.util.List;
/**
* Created by Administrator on 2016/10/21.
*/
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>{
private List<String> mDatas;
private LayoutInflater inflater;
private OnItemClickListener listener;
public void setOnItemClickListener(OnItemClickListener listener ){
this.listener=listener;
}
public MyAdapter(List<String> datas){
mDatas=datas;
}
//创建ViewHolder，相当于listView Adapter的getView方法
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
inflater=LayoutInflater.from(parent.getContext());
View view=inflater.inflate(R.layout.item,parent,false);
return new ViewHolder(view);
}
//数据绑定
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.textView.setText(mDatas.get(position));
}
//数据的长度
@Override
public int getItemCount() {
return mDatas.size();
}
//自定义添加数据方法
public void addData(int position,String city){
mDatas.add(position,city);
notifyItemInserted(position);
}
//自定义删除数据方法
public void removeData(int position){
mDatas.remove(position);
notifyItemRemoved(position);
}
//ViewHolder
class ViewHolder extends RecyclerView.ViewHolder{
private TextView textView;
public ViewHolder(View itemView) {
super(itemView);
textView= (TextView) itemView.findViewById(R.id.text);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (listener!=null){
listener.onClick(v,getLayoutPosition(),mDatas.get(getLayoutPosition()));
}
}
});
// textView.setOnClickListener();
}
}
//自定义点击事件
interface OnItemClickListener{
void onClick(View c,int position,String city);
}
}
package com.example.myshop;
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;
/**
* Created by Administrator on 2016/10/21.
*/
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);
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:gravity="center"
android:padding="10dp"
android:background="#f0f"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#fff"
android:textSize="20sp"
android:text="1"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
tools:context="com.example.myshop.RecyclerviewActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
