RecyclerView中的捆绑问题

尝试将我的包放入 onClickListener() onClickListener() 中的我的意图时遇到错误 .

java.lang.NullPointerException：尝试在空对象引用上调用虚方法'void android.os.Bundle.putString（java.lang.String，java.lang.String）'

我还试图创建一个新的包而不是使用额外的，但得到与上面相同的错误 . 奇怪的是 putExtras() 方式适用于一个变量，正确传递，但是我有大约8个不同的变量要插入辅助页面 .

代码如下：

public void onClick(View view) {
    intent = new Intent(itemView.getContext(), CardActivity.class);
    extras = intent.getExtras();
        extras.putString(CARD_IMG, cardList.Basic.get(getAdapterPosition()).getImg());
        extras.putString(CARD_FLAVOR, cardList.Basic.get(getAdapterPosition()).getFlavor());
        extras.putString(CARD_TEXT, cardList.Basic.get(getAdapterPosition()).getText());
        extras.putString(CARD_TYPE, cardList.Basic.get(getAdapterPosition()).getType());
        extras.putString(CARD_ARTIST, cardList.Basic.get(getAdapterPosition()).getArtist());
        extras.putString(CARD_SET, cardList.Basic.get(getAdapterPosition()).getCardSet());
        extras.putString(CARD_RARITY, cardList.Basic.get(getAdapterPosition()).getRarity());
        extras.putString(CARD_NAME, cardList.Basic.get(getAdapterPosition()).getName());
    intent.putExtras(extras);
    itemView.getContext().startActivity(intent);
}

任何帮助或推动正确的方向将不胜感激 .

提前谢谢！

编辑：我已经包含了以下有用的完整文件 . 感谢您回复到目前为止，非常感谢 .

public class RecyclerAdaptor extends RecyclerView.Adapter<RecyclerAdaptor.CustomViewHolder> {
//for bundle keys
private static final String CARD_FLAVOR = "CARD_FLAVOR";
private static final String CARD_TYPE = "CARD_TYPE";
private static final String CARD_ARTIST = "CARD_ARTIST";
private static final String CARD_SET = "CARD_SET";
private static final String CARD_RARITY = "CARD_RARITY";
private static final String CARD_NAME = "CARD_NAME";
private static final String CARD_IMG = "CARD_IMG";
private static final String CARD_TEXT = "CARD_TEXT";

private static Intent intent;
public static Bundle extras;
public static CardList cardList;

public RecyclerAdaptor(CardList cardList) {
    this.cardList = cardList;
}

@Override
//Number of Items
public int getItemCount() {
    return cardList.Basic.size();
}


@Override
public RecyclerAdaptor.CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.card_row, parent, false);
    CustomViewHolder holder = new CustomViewHolder(v);
    return holder;
}

@Override
public void onBindViewHolder(RecyclerAdaptor.CustomViewHolder holder, int position) {

    final Card card = cardList.Basic.get(position);
    String cost = "0";
    // Could have made values protected in class, but meh
    holder.cardName.setText(card.getName());
    holder.cardText.setText(card.getText());
    holder.cardFlavor.setText(card.getFlavor());

    // Handles dust value of card
    if (card.getRarity() != null) {
        switch (card.getRarity()) {
            case "Common": cost = "40";
                break;
            case "Rare": cost = "100";
                break;
            case "Epic": cost = "400";
                break;
            case "Legendary": cost = "1600";
                break;
        }
    }

    holder.cardCost.setText(cost);
    Picasso.with(holder.cardImg.getContext()).load(card.getImg()).into(holder.cardImg);

}

public static class CustomViewHolder extends RecyclerView.ViewHolder {

    private TextView cardName;
    private TextView cardText;
    private TextView cardFlavor;
    private TextView cardCost;
    private GifImageView cardImg;
    private Button moreButton;

    public CustomViewHolder(final View itemView) {
        super(itemView);

        cardName = itemView.findViewById(R.id.cardTitle);
        cardText = itemView.findViewById(R.id.cardText);
        cardFlavor = itemView.findViewById(R.id.cardFlavor);
        cardCost = itemView.findViewById(R.id.dustTextView);
        cardImg = itemView.findViewById(R.id.cardImgView);
        moreButton = itemView.findViewById(R.id.moreButton);

        moreButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                Toast.makeText(itemView.getContext(), "Clicked:" + getAdapterPosition(), Toast.LENGTH_SHORT).show();
                intent = new Intent(itemView.getContext(), CardActivity.class);
                extras = intent.getExtras();
                if(extras == null){
                    extras = new Bundle();
                }
                    extras.putString(CARD_IMG, cardList.Basic.get(getAdapterPosition()).getImg());
                    extras.putString(CARD_FLAVOR, cardList.Basic.get(getAdapterPosition()).getFlavor());
                    extras.putString(CARD_TEXT, cardList.Basic.get(getAdapterPosition()).getText());
                    extras.putString(CARD_TYPE, cardList.Basic.get(getAdapterPosition()).getType());
                    extras.putString(CARD_ARTIST, cardList.Basic.get(getAdapterPosition()).getArtist());
                    extras.putString(CARD_SET, cardList.Basic.get(getAdapterPosition()).getCardSet());
                    extras.putString(CARD_RARITY, cardList.Basic.get(getAdapterPosition()).getRarity());
                    extras.putString(CARD_NAME, cardList.Basic.get(getAdapterPosition()).getName());
                intent.putExtras(extras);
                itemView.getContext().startActivity(intent);
            }
        });

    }
}
}

完整错误如下：

01-29 12：32：07.961 3030-3030 / com.venaseph.hearthlopedia E / AndroidRuntime：FATAL EXCEPTION：main进程：com.venaseph.hearthlopedia，PID：3030 java.lang.RuntimeException：无法启动活动ComponentInfo {com .venaseph.hearthlopedia / com.venaseph.hearthlopedia.CardActivity}：java.lang.IllegalArgumentException：Target不能为null . 在Android.app.A活动中的android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2817）android.app.A活动时，我在android.app.A活动时发现了android.app.A活动，发送活动（ActivityThread.java:2892） . ActivityThread $ H.handleMessage（ActivityThread.java:1593）位于android.app.AooT.Thread.main的android.os.Handler.dispatchMessage（Handler.java:105）android.os.Looper.loop（Looper.java:164） （ActivityThread.java:6541）位于com.android.internal.os的com.android.internal.os.Zygote $ MethodAndArgsCaller.run（Zygote.java:240）的java.lang.reflect.Method.invoke（Native Method） .ZygoteInit.main（ZygoteInit.java:767）引起：java.lang.IllegalArgumentException：Target不能为null . at com.squareup.picasso.RequestCreator.into（RequestCreator.java:618）at com.squareup.picasso.RequestCreator.into（RequestCreator.java:601）at com.venaseph.hearthlopedia.CardActivity.getBundleValues（CardActivity.java:41） ）在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1213）的android.app.Activity.performCreate（Activity.java:6975）上的com.venaseph.hearthlopedia.CardActivity.onCreate（CardActivity.java:33） Android.app.ActivityThread $中android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2892）的android.app.ActivityThread.-wrap11（未知来源：0）的.app.ActivityThread.performLaunchActivity（ActivityThread.java:2770） H.handleMessage（ActivityThread.java:1593）位于android.app.AooT.Thread.main上的android.os.Handler.dispatchMessage（Handler.java:105）android.os.Looper.loop（Looper.java:164）（ActivityThread） .java：6541）在java.lang.reflect.Method.invoke（Native Method）的com.android.internal.os.Zygote $ MethodAndArgsCaller.run（Zygote.java:240）at at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:767）

另外，如果我按原样保留所有内容并删除intent.putExtras，它不会崩溃 .