RecyclerView展示資料
阿新 • • 發佈:2018-11-29
匯入依賴:
implementation 'com.android.support:recyclerview-v7:28.0.0'
佈局引用:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:orientation="vertical" android:layout_height="match_parent" tools:context=".MainActivity"> <android.support.v7.widget.RecyclerView android:id="@+id/ceshilist" android:layout_width="match_parent" android:layout_height="match_parent"> </android.support.v7.widget.RecyclerView> </LinearLayout>
介面卡:
package com.example.administrator.recyclerviewdemo; 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.TextView; import java.util.List; /* * @Comment :list的介面卡 * @Created :2018/11/5 17:49 * @Name : YJ */public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyHolder> { private Context context; private List<String> list; public MyAdapter(Context context, List<String> list) { this.context = context; this.list = list; } @NonNull @Override public MyAdapter.MyHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { MyHolder myHolder=new MyHolder(LayoutInflater.from(context).inflate(R.layout.item,viewGroup,false)); return myHolder; } @Override public void onBindViewHolder(@NonNull MyAdapter.MyHolder myHolder, final int i) { myHolder.mText.setText("第"+i+"條資料"); } @Override public int getItemCount() { return list.size(); } public class MyHolder extends RecyclerView.ViewHolder { private TextView mText; public MyHolder(@NonNull View itemView) { super(itemView); mText= itemView.findViewById(R.id.text); } } }
程式碼引用:
package com.example.administrator.recyclerviewdemo; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.widget.Toast; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { private RecyclerView mCeshiList; private MyAdapter myAdapter; private List<String> list; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mCeshiList=findViewById(R.id.ceshilist); setList(); } public void setList(){ //新增資料 list=new ArrayList<>(); for (int i=0;i<50;i++){ list.add("第"+i+"條資料"); } LinearLayoutManager linearLayoutManager=new LinearLayoutManager(this); mCeshiList.setLayoutManager(linearLayoutManager); myAdapter=new MyAdapter(this,list); mCeshiList.setAdapter(myAdapter); } }