RecyclerView巢狀內+外item 實現點選事件
阿新 • • 發佈：2021-01-04
技術標籤：java
專案中一個功能需要RecyclerView巢狀如下圖
（圖片來自網路）
內部Adapter 核心程式碼
holder.btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(con, "刪除", Toast.LENGTH_SHORT).show(); lisner.onCilck(position); } }); rv2.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { return false; } });
public class TestKActivity extends AppCompatActivity { private RecyclerView rvone; private TestAdapter testAdapter; private List<String> datas= new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_test_k); rvone=(RecyclerView)findViewById(R.id.rv_1); LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this); testAdapter = new TestAdapter(this); rvone.setAdapter(testAdapter); rvone.setLayoutManager(linearLayoutManager); inidata(); testAdapter.setUpdate(datas); testAdapter.setLisner(new TestAdapter.Lisner() { @Override public void onCilck(int postion) { Toast.makeText(TestKActivity.this, "=aaaaaaaaa="+postion, Toast.LENGTH_SHORT).show(); testAdapter.removes(postion); } }); } private void inidata() { for(int i=0;i<10;i++){ datas.add("-A-"+i); } } }
//外層的Adapter public class TestAdapter extends RecyclerView.Adapter<TestAdapter.MyViewHodewr> { private Context con; private List<String> datas = new ArrayList<>(); private List<String> datab = new ArrayList<>(); private TestTwoAdapter testTwoAdapter; private RecyclerView rv2; public TestAdapter(TestKActivity testKActivity) { this.con = testKActivity; for (int i = 0; i < 4; i++) { datab.add("-B-" + i); } } @NonNull @Override public MyViewHodewr onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View inflate = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_a, parent, false); return new MyViewHodewr(inflate); } @Override public void onBindViewHolder(@NonNull MyViewHodewr holder, int position) { //攔截內部的recyView // holder.itemView.setOnTouchListener(new View.OnTouchListener() { // @Override // public boolean onTouch(View v, MotionEvent event) { // return rv2.onTouchEvent(event); // } // }); holder.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Toast.makeText(con, "Aaa", Toast.LENGTH_SHORT).show(); if (lisner != null) { lisner.onCilck(position); } } }); // holder.tv.setText(datas.get(position)); testTwoAdapter = new TestTwoAdapter(); rv2 = holder.rv2; LinearLayoutManager linearLayoutManager = new LinearLayoutManager(con); GridLayoutManager gridLayoutManager = new GridLayoutManager(con, 3); linearLayoutManager.setOrientation(RecyclerView.HORIZONTAL); rv2.setLayoutManager(gridLayoutManager); rv2.setAdapter(testTwoAdapter); testTwoAdapter.setUpdate(datab); testTwoAdapter.setLisner(new TestTwoAdapter.Lisners() { @Override public void onCilck(int postions) { Toast.makeText(con, "bbb" + postions, Toast.LENGTH_SHORT).show(); } }); holder.btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(con, "刪除", Toast.LENGTH_SHORT).show(); lisner.onCilck(position); } }); rv2.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { return false; } }); } @Override public int getItemCount() { return datas.size() > 0 ? datas.size() : 0; } public void setUpdate(List<String> datass) { this.datas.addAll(datass); } public void removes(int postion) { if(this.datas!=null){ datas.remove(postion); notifyDataSetChanged(); } } class MyViewHodewr extends RecyclerView.ViewHolder { private Button btn; private TextView tv; private RecyclerView rv2; public MyViewHodewr(@NonNull View itemView) { super(itemView); rv2 = (RecyclerView) itemView.findViewById(R.id.rv_2); tv = (TextView) itemView.findViewById(R.id.tv); btn= (Button) itemView.findViewById(R.id.detele); } } public void setLisner(Lisner lisner) { this.lisner = lisner; } private Lisner lisner = null; interface Lisner { public void onCilck(int postion); } }
內部Item的 Adapter
public class TestTwoAdapter extends RecyclerView.Adapter<TestTwoAdapter.MyViewHoldler> {
private List<String> datas= new ArrayList<>();
@NonNull
@Override
public MyViewHoldler onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View inflate = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_two, parent, false);
return new MyViewHoldler(inflate);
}
@Override
public void onBindViewHolder(@NonNull MyViewHoldler holder, int position) {
holder.name.setText(datas.get(position));
holder.itemView.setOnClickListener(new View.OnClickListener() {
private int positio;
@Override
public void onClick(View v) {
if( lisner!=null){
lisner.onCilck(position);
this.positio= position;
}
}
});
}
@Override
public int getItemCount() {
return datas.size()>0?datas.size():0;
}
public void setUpdate(List<String> datasS) {
datas.addAll(datasS);
}
class MyViewHoldler extends RecyclerView.ViewHolder{
private TextView title;
private TextView name;
private ImageView image;
public MyViewHoldler(@NonNull View itemView) {
super(itemView);
image= (ImageView)itemView.findViewById(R.id.image_on);
name= (TextView)itemView.findViewById(R.id.name_1);
title= (TextView)itemView.findViewById(R.id.title_1);
}
}
public void setLisner(Lisners lisner) {
this.lisner = lisner;
}
private Lisners lisner=null;
interface Lisners{
public void onCilck(int postion);
}
}
主佈局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".recyView.TestKActivity">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv_1"
/>
</LinearLayout>
外層
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="match_parent"
android:id="@+id/detele"
android:layout_height="30dp"
android:text="刪除"
/>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv_2"
/>
</LinearLayout>
內層
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="100dp"
>
<ImageView
android:id="@+id/image_on"
android:layout_width="90dp"
android:layout_height="match_parent"
android:src="@drawable/ic_launcher_background" />
<LinearLayout
android:layout_toRightOf="@id/image_on"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/name_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="helloskdhsjkdh"
/>
<TextView
android:id="@+id/title_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="helloskdhsjkdh"
/>
</LinearLayout>
</RelativeLayout>