在使用 recyclerView 填充的 cardView 中为按钮添加 clickListner

Question

我有一个cardView

card_contents.xml

<?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="match_parent">
<android.support.v7.widget.CardView android:layout_width="match_parent"
    android:layout_height="150dp"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp"
    android:id="@+id/card_view">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ffa3a4a6">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/card_text"
        android:layout_gravity="center"
        android:gravity="center"
        android:text="B.E"
        android:layout_centerInParent="true"
        />
     <Button
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:id="@+id/button1"
         android:layout_toLeftOf="@+id/view"
         android:layout_alignParentLeft="true"
         android:text="2010"
         android:textColor="#000000"
         android:background="@android:color/transparent"
         />
       <View
           android:layout_width="2dp"
           android:layout_height="@dimen/abc_action_button_min_height_material"
           android:layout_centerHorizontal="true"
           android:id="@+id/view"
           android:background="@android:color/black"
           android:layout_alignParentBottom="true"
           />
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/button2"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:layout_toRightOf="@+id/view"
            android:background="@android:color/transparent"
            android:textColor="@android:color/black"
            android:text="2014"/>
    </RelativeLayout>
    </android.support.v7.widget.CardView>
   </RelativeLayout>

MainActivity.class

public class MainActivity extends ActionBarActivity {

RecyclerView recyclerView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);



    List<String> list=new ArrayList<String>();
    list.add("Hello");
    list.add("Hello World");
    list.add("Hello World Beings");

    recyclerView=(RecyclerView)findViewById(R.id.recycler_view);
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    recyclerView.setHasFixedSize(true);

    RecyclerView.LayoutManager layoutManager=new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);

    RecyclerView.Adapter adapter=new MyAdapter(list);
    recyclerView.setAdapter(adapter);




}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.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();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}
}

MyAdapter.class

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
List<String> list;
public MyAdapter(List<String> list){
    this.list=list;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View v=LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_contents,viewGroup,false);
    return new MyViewHolder(v);
}

@Override
public void onBindViewHolder(MyViewHolder myViewHolder, int i) {
        myViewHolder.textView.setText(list.get(i));
}

@Override
public int getItemCount() {
    return list.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder{
    TextView textView;
    MyViewHolder(View view){
        super(view);
        this.textView= (TextView) view.findViewById(R.id.card_text);
    }
}
}

我实际上想为卡片内的按钮设置点击侦听器并启动新的 activity 取决于按下哪个按钮以及它在哪张卡片上按下。有没有办法做到这一点？我环顾四周，但没有找到为 cardView.I 中的项目设置点击侦听器的任何答案，我是 android 的新手，我们将不胜感激。提前致谢

Answer 1

Add click listener for button inside a cardView populated using a recyclerView

为 RecyclerView 中的按钮添加点击事件：

1. 从 xml 获取 Button 的方式与在 MyViewHolder 中获取 TextView 的方式相同 class:

public static class MyViewHolder extends RecyclerView.ViewHolder{
    TextView textView;
    Button btnButton1;
    MyViewHolder(View view){
        super(view);
        this.textView= (TextView) view.findViewById(R.id.card_text);
        this.btnButton1= (Button) view.findViewById(R.id.button1);
        ... do same for other Button
    }
}

2.在onBindViewHolder方法中为Button添加setOnClickListener方法：

@Override
public void onBindViewHolder(MyViewHolder myViewHolder, int i){
     myViewHolder.textView.setText(list.get(i));
      myViewHolder.btnButton1.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View v) {
            /// button click event
        }
    });
}

Answer 2

在 CustomAdapter 的 onBindViewHolder 方法上定义您的 onClick 侦听器。

Answer 3

假设您有：

<android.support.v7.widget.CardView
    android:id="@+id/cv"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="4dp"
    android:elevation="4dp"
    app:cardCornerRadius="2dp">

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:padding="16dp">

        <TextView
            android:id="@+id/listText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:padding="8dp"
            android:text="New Text" />

        <ImageButton
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignBottom="@+id/listText"
            android:layout_alignParentRight="true"
            android:onClick="onClickBotonBorrar"
            android:background="?android:selectableItemBackground"
            android:src="@drawable/ic_action_borrar" />
    </RelativeLayout>

</android.support.v7.widget.CardView>

注意这部分：android:onClick="onClickBotonBorrar"

在您的 Activity 上添加：

public void onClickBotonBorrar (View v) {
//Do whatever you want when user clicks on your ImageButton
    }

建议不要在您的适配器中使用点击事件，而在您的 activity 中使用。

注意：按钮类似

Answer 4

另一种方法是使用接口

1) 创建接口

public interface ItemClickListener{

   public void startSecondActivity(int index);

   public void startThirdActivity(int index);

}

2) 在您的 Activity

中实现接口

public class MainActivity extends AppcompatActivity implements ItemClickListener {

   .........

   public void startSecondActivity(int index){

            Intent i = new Intent(MainActivity.this, SecondActivity.class);
            startActivity(i);

   }

   public void startThirdActivity(int index){

            Intent i = new Intent(MainActivity.this, ThirdActivity.class);
            startActivity(i);
   }


}

3) 在RecyclerViewAdapter中使用ItemListener

MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>{

      private ItemListener listener;

      public MyAdapter(Context context){
           listener = (ItemListener)context;
      }

      Override
      public void onBindViewHolder(MyViewHolder myViewHolder, int position){

         myViewHolder.btnButton1.setOnClickListener(new View.OnClickListener(){

              @Override
              public void onClick(View v) {
                  listener.startSecondActivity(position)
              }
         });

         myViewHolder.btnButton2.setOnClickListener(new View.OnClickListener(){

              @Override
              public void onClick(View v) {
                   listener.startThirdActivity(position)
              }
         });
      }

}

在使用 recyclerView 填充的 cardView 中为按钮添加 clickListner

Add clickListner for button inside a cardView populated using a recyclerView

android

ontouchlistener

onitemclicklistener

android-recyclerview

android-cardview