在 RecyclerView 中切换按钮位置

Question

我在回收器视图中有切换按钮我将布尔值保存在 sharedpreference 中以识别每次重新启动应用程序时是否按下切换按钮现在的问题是当我单击 1 切换按钮并关闭应用程序时，每个切换按钮都对关闭按钮进行相同的操作，切换按钮和回收器视图之间没有位置连接，这是我的代码

 @Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.model,null);

    MyHolder holder=new MyHolder(v);
    SharedPreferences sharedPrefs = c.getSharedPreferences("lol", MODE_PRIVATE);
    Boolean a = sharedPrefs.getBoolean("abc" , false);
    if(a) {
        holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_light));
        holder.fav.setChecked(true);
    } else {
        holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_off));
        holder.fav.setChecked(false);
    }
    return holder;
}

@Override
public void onBindViewHolder(final MyHolder holder, final int position) {
    holder.nameTxt.setText(players[position]);
    holder.posTxt.setText(positions[position]);
    holder.img.setImageResource(images[position]);
    holder.fav.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if(isChecked) {
               holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c,R.drawable.star_light));
            SharedPreferences.Editor editor = c.getSharedPreferences("lol", MODE_PRIVATE).edit();
            editor.putBoolean("abc", true);
            editor.commit();
            } else {
                holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_off));
                SharedPreferences.Editor editor = c.getSharedPreferences("lol", MODE_PRIVATE).edit();
                editor.putBoolean("abc", false);
                editor.commit();
            }
        }
    });

Answer 1

你的实现是错误的。

您应该只使用 onCreateViewHolder() 来扩充布局。

绑定操作应该在onBindViewHolder()中。在 onBindViewHolder()

中使用切换操作

Answer 2

我进行了快速编辑。请详细检查。我在 SharedPreferences 中使用了 position。所以每个 toggle button 值保存在不同的键中。这可能有效。

SharedPreferences.Editor editor = c.getSharedPreferences("lol", MODE_PRIVATE).edit();

@Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.model,null);

    MyHolder holder=new MyHolder(v);

    return holder;
}


@Override
public void onBindViewHolder(final MyHolder holder, final int position) {


    holder.nameTxt.setText(players[position]);
    holder.posTxt.setText(positions[position]);
    holder.img.setImageResource(images[position]);

    SharedPreferences sharedPrefs = c.getSharedPreferences("lol", MODE_PRIVATE);
        Boolean a = sharedPrefs.getBoolean("abc"+position , false);
        if (a){
            holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_light));
            holder.fav.setChecked(true);

        }else {
            holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_off));
            holder.fav.setChecked(false);

        }

    holder.fav.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            if (isChecked){
                holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c,R.drawable.star_light));

            editor.putBoolean("abc"+position, true);
            editor.commit();
            }
            else{
                holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_off));

                editor.putBoolean("abc"+position, false);
                editor.commit();

            }
        }
    });

Answer 3

成功了谢谢大家这是正确答案

 @Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.model,null);

    MyHolder holder=new MyHolder(v);

    return holder;
}


@Override
public void onBindViewHolder(final MyHolder holder, final int position) {


    holder.nameTxt.setText(players[position]);
    holder.posTxt.setText(positions[position]);
    holder.img.setImageResource(images[position]);
    SharedPreferences sharedPrefs = c.getSharedPreferences("lol", MODE_PRIVATE);
    Boolean a = sharedPrefs.getBoolean("abc" + position, false);
    if (a){
        holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_light));
        holder.fav.setChecked(true);

    }else {
        holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_off));
        holder.fav.setChecked(false);

    }


    holder.fav.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            if (isChecked){
                holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c,R.drawable.star_light));
            SharedPreferences.Editor editor = c.getSharedPreferences("lol", MODE_PRIVATE).edit();
            editor.putBoolean("abc" + position, true);
            editor.commit();
            }
            else{
                holder.fav.setBackgroundDrawable(ContextCompat.getDrawable(c, R.drawable.star_off));
                SharedPreferences.Editor editor = c.getSharedPreferences("lol", MODE_PRIVATE).edit();
                editor.putBoolean("abc" + position, false);
                editor.commit();

            }
        }
    });

在 RecyclerView 中切换按钮位置

Toggle Button positions in RecyclerView

android

togglebutton

android-recyclerview