Question

我在适配器中的Recyclerview中有以下代码：

public class MyMovieAdapter extends RecyclerView.Adapter<MyMovieAdapter.ViewHolder> {

    private Context context;
    Cursor dataCursor;

    public MyMovieAdapter(Context context, Cursor cursor,) {
        this.context = context;
        this.dataCursor = cursor;

    }

    @Override
    public MyMovieAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.my_movies_listrow, viewGroup, false);

        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int i) {

        dataCursor.moveToPosition(i);
        viewHolder.my_movie_delete_button.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                Log.e("AAAA", "It doesn't print that log on a button click");
            }
        });

        viewHolder.tv_original_title.setText(dataCursor.getString(1));
        Picasso.with(context).load(dataCursor.getString(9)).resize(150,225).into(viewHolder.img_my_movie);

    }

    @Override
    public int getItemCount() {
        return dataCursor.getCount();
    }



    public class ViewHolder extends RecyclerView.ViewHolder  implements View.OnClickListener{
        TextView tv_original_title;
        ImageView img_my_movie;
        Button my_movie_delete_button;

        public ViewHolder(View view) {
            super(view);


            tv_original_title = (TextView)view.findViewById(R.id.tv_original_title);
            img_my_movie = (ImageView)view.findViewById(R.id.img_my_movie);
            my_movie_delete_button = (Button)view.findViewById(R.id.my_movies_delete_button);
            my_movie_delete_button.setOnClickListener(this);

        }

        @Override
        public void onClick(View view) {
            Log.e("AAAA", "Neither like that");

        }
    }
    public Cursor swapCursor(Cursor cursor) {
        if (dataCursor == cursor) {
            return null;
        }
        Cursor oldCursor = dataCursor;
        this.dataCursor = cursor;
        if (cursor != null) {
            this.notifyDataSetChanged();
        }
        return oldCursor;
    }
 }

我列表中一行的布局如下：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="5dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp"
    card_view:cardCornerRadius="5dp">

    <RelativeLayout
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginBottom="20dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:layout_width="150dp"
            android:layout_height="225dp"
            android:id="@+id/img_my_movie"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginRight="20dp"/>

        <TextView
            android:layout_marginTop="10dp"
            android:textSize="18sp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tv_original_title"
            android:textStyle="bold"
            android:layout_centerVertical="true"
            android:layout_toRightOf="@+id/img_my_movie" />

        <Button
            android:id="@+id/my_movies_delete_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="delete"
            android:layout_alignBaseline="@+id/tv_original_title"
            android:layout_alignBottom="@+id/tv_original_title"
            android:layout_centerHorizontal="true" />

    </RelativeLayout>

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

我已经尝试在按钮上打印一个日志点击两种不同的方式，如上所示，没有运气。可能是什么问题？

Answer 1

将此设置为行布局android的父级：descendantFocusability =＆＃34; blocksDescendants＆＃34; 和用以下代码替换您的代码，

public class MyMovieAdapter extends RecyclerView.Adapter<MyMovieAdapter.ViewHolder> {

    private Context context;
    Cursor dataCursor;

    public MyMovieAdapter(Context context, Cursor cursor,) {
        this.context = context;
        this.dataCursor = cursor;

    }

    @Override
    public MyMovieAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.my_movies_listrow, viewGroup, false);

        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int i) {

        dataCursor.moveToPosition(i);
        viewHolder.my_movie_delete_button.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                Log.e("AAAA", "It doesn't print that log on a button click");
            }
        });

        viewHolder.tv_original_title.setText(dataCursor.getString(1));
        Picasso.with(context).load(dataCursor.getString(9)).resize(150,225).into(viewHolder.img_my_movie);

    }

    @Override
    public int getItemCount() {
        return dataCursor.getCount();
    }



    public class ViewHolder extends RecyclerView.ViewHolder  implements View.OnClickListener{
        TextView tv_original_title;
        ImageView img_my_movie;
        Button my_movie_delete_button;

        public ViewHolder(View view) {
            super(view);


            tv_original_title = (TextView)view.findViewById(R.id.tv_original_title);
            img_my_movie = (ImageView)view.findViewById(R.id.img_my_movie);
            my_movie_delete_button = (Button)view.findViewById(R.id.my_movies_delete_button);


        }

            }
    public Cursor swapCursor(Cursor cursor) {
        if (dataCursor == cursor) {
            return null;
        }
        Cursor oldCursor = dataCursor;
        this.dataCursor = cursor;
        if (cursor != null) {
            this.notifyDataSetChanged();
        }
        return oldCursor;
    }
 }

Answer 2

许多人在上面的评论中说，问题在于重启应用程序。首先，我在logcat中访问监视器并关闭正在运行的应用程序，然后再次运行应用程序。重新启动应用程序后仍未显示日志。然后我从我的设备上卸载了应用程序，然后再次运行。该应用程序在之后工作。

感谢您的帮助和时间来帮助解决我的问题。

为什么我的onClicklistener无法访问？

2 个答案: