android RecyclerView介面卡實現多佈局item+item內部控制元件點選事件
阿新 • • 發佈：2019-02-02
@先看看效果是不是自己想要的吧@
使用步驟：
第一步：新增RecyclerView介面卡依賴
compile 'com.android.support:recyclerview-v7:27.1.1'
第二步：佈局檔案裡使用RecyclerView
第三步：建立兩個item子佈局填充item內容
itemone.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="60dp" android:background="#fff"> <ImageView android:id="@+id/iv_icon" android:layout_width="40dp" android:layout_height="40dp" android:layout_centerVertical="true" android:layout_marginLeft="10dp" android:src="@mipmap/ic_launcher"/> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:orientation="vertical" android:layout_centerVertical="true" android:layout_toRightOf="@+id/iv_icon"> <TextView android:id="@+id/tv_username" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="username" /> <TextView android:id="@+id/tv_message" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="5dp" android:text="讓我們成為好友吧？" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:orientation="horizontal" android:paddingRight="5dp" android:layout_centerVertical="true"> <Button android:id="@+id/btn_agree" android:layout_width="60dp" android:layout_height="40dp" android:text="同意" android:textSize="10dp"/> <Button android:id="@+id/btn_refuse" android:layout_width="60dp" android:layout_height="40dp" android:text="拒絕" android:textSize="10dp"/> </LinearLayout> </RelativeLayout>
itemtwo.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="60dp" android:background="#fff"> <ImageView android:id="@+id/iv_icon" android:layout_width="40dp" android:layout_height="40dp" android:layout_centerVertical="true" android:layout_marginLeft="10dp" android:src="@mipmap/ic_launcher"/> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:orientation="vertical" android:layout_centerVertical="true" android:layout_toRightOf="@+id/iv_icon"> <TextView android:id="@+id/tv_username" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="username" /> </LinearLayout> </RelativeLayout>
第四步：定義一個實體類Data，作為Recyclerview的適配型別
package com.ied.recyclerview.entity; public class Data { public static final int TYPE_ONE = 1;//型別1 public static final int TYPE_TWO = 2;//型別2 public int type;//item內容 型別 public int icon; public String username; public String message; public Data(int type, int icon, String username, String message) { this.type = type; this.icon = icon; this.username = username; this.message = message; } public static int getTypeOne() { return TYPE_ONE; } public static int getTypeTwo() { return TYPE_TWO; } public int getType() { return type; } public void setType(int type) { this.type = type; } public int getIcon() { return icon; } public void setIcon(int icon) { this.icon = icon; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } }
第五步：建立自定義MyRecyclerViewAdapter介面卡繼承RecyclerView.Adapter
package com.ied.recyclerview.adapter;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.ied.recyclerview.R;
import com.ied.recyclerview.entity.Data;
import java.util.List;
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
private List<Data> list;//資料來源
private Context context;//上下文
public MyRecyclerViewAdapter(List<Data> list, Context context) {
this.list = list;
this.context = context;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
//選擇型別
switch (viewType){
case Data.TYPE_ONE:
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item,parent,false);
return new OneViewHolder(view);
case Data.TYPE_TWO:
view = LayoutInflater.from(parent.getContext()).inflate(R.layout.itemtwo,parent,false);
return new TwoViewHolder(view);
}
return null;
}
//繫結
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
}
//有多少個item？
@Override
public int getItemCount() {
return list.size();
}
//item型別
@Override
public int getItemViewType(int position) {
return list.get(position).type;
}
//=======================以下為item中的button控制元件點選事件處理===================================
//第一步：自定義一個回撥介面來實現Click和LongClick事件
public interface OnItemClickListener {
void onItemClick(View v, int position);
void onItemLongClick(View v);
}
public OnItemClickListener mOnItemClickListener;//第二步：宣告自定義的介面
//第三步：定義方法並暴露給外面的呼叫者
public void setOnItemClickListener(OnItemClickListener listener) {
this.mOnItemClickListener = listener;
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//第一個item型別
class OneViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private ImageView ivIcon;
private TextView tvUsername, tvMessage;
private Button btnAgree, btnRefuse;
//private List<Data> list;
public OneViewHolder(View itemView) {
super(itemView);
ivIcon = itemView.findViewById(R.id.iv_icon);
tvUsername = itemView.findViewById(R.id.tv_username);
tvMessage = itemView.findViewById(R.id.tv_message);
btnAgree = itemView.findViewById(R.id.btn_agree);
btnRefuse = itemView.findViewById(R.id.btn_refuse);
// 為item及item內部控制元件新增點選事件
itemView.setOnClickListener(this);
btnAgree.setOnClickListener(this);
btnRefuse.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(v, getAdapterPosition());
}
}
}
//第二個item型別
class TwoViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private ImageView ivIcon;
private TextView tvUsername;
public TwoViewHolder(View itemView) {
super(itemView);
ivIcon = itemView.findViewById(R.id.iv_icon);
tvUsername = itemView.findViewById(R.id.tv_username);
// 為item新增點選事件
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(v, getAdapterPosition());
}
}
}
}第六步：在MainActivity中編寫，初始化資料，設定介面卡
package com.ied.recyclerview;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Toast;
import com.ied.recyclerview.adapter.MyRecyclerViewAdapter;
import com.ied.recyclerview.entity.Data;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private RecyclerView rvRecyclerView;
private MyRecyclerViewAdapter adapter;
private List<Data> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
rvRecyclerView.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));//控制佈局為LinearLayout或者是GridView或者是瀑布流佈局
adapter = new MyRecyclerViewAdapter(list,this);
rvRecyclerView.setAdapter(adapter);
// 設定item及item中控制元件的點選事件
adapter.setOnItemClickListener(MyItemClickListener);
}
private void initView() {
rvRecyclerView = (RecyclerView) findViewById(R.id.rv_recyclerView);
}
private void initData() {
list = new ArrayList<>();
list.add(new Data(1,R.mipmap.ic_launcher, "username", "讓我們成為好友吧！"));
list.add(new Data(2,R.mipmap.ic_launcher, "username", "讓我們成為好友吧！"));
list.add(new Data(1,R.mipmap.ic_launcher, "username", "讓我們成為好友吧！"));
list.add(new Data(2,R.mipmap.ic_launcher, "username", "讓我們成為好友吧！"));
list.add(new Data(1,R.mipmap.ic_launcher, "username", "讓我們成為好友吧！"));
}
/**
* item＋item裡的控制元件點選監聽事件
*/
private MyRecyclerViewAdapter.OnItemClickListener MyItemClickListener = new MyRecyclerViewAdapter.OnItemClickListener() {
@Override
public void onItemClick(View v, int position) {
switch (v.getId()){
case R.id.btn_agree:
Toast.makeText(MainActivity.this,"你點選了同意按鈕"+(position+1),Toast.LENGTH_SHORT).show();
break;
case R.id.btn_refuse:
Toast.makeText(MainActivity.this,"你點選了拒絕按鈕"+(position+1),Toast.LENGTH_SHORT).show();
break;
default:
Toast.makeText(MainActivity.this,"你點選了item按鈕"+(position+1),Toast.LENGTH_SHORT).show();
break;
}
}
@Override
public void onItemLongClick(View v) {
}
};
}
最後成功實現多佈局item及item內部控制元件的點選事件！！