Question

我在网上搜索了很长时间。但没用。请帮助或尝试提出一些解决此问题的建议。

1。错误描述

图片链接：https://i.stack.imgur.com/ixvdB.jpg

＆＃34; left＆＃34;：运行apk

＆＃34;右＆＃34;：当我向下滑动时，项目的大小正在改变。

2。代码

MainActivity.java

public class MainActivity extends AppCompatActivity {

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

    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
    recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
    List<Member> memberList = new ArrayList<>();

    memberList.add(new Member(1, R.drawable.baishatunbeach1, "白沙屯海灘1"));
    //add Members

    recyclerView.setAdapter(new MemberAdapter(this, memberList));
}

private class MemberAdapter extends RecyclerView.Adapter<MemberAdapter.ViewHolder> {
    private Context context;
    private List<Member> memberList;

    MemberAdapter(Context context, List<Member> memberList) {
        this.context = context;
        this.memberList = memberList;
    }

    @Override
    public MemberAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.recyclerview_cardview_item, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MemberAdapter.ViewHolder holder, int position) {
        final Member member = memberList.get(position);
        holder.imageId.setImageResource(member.getImage());
        holder.textId.setText(String.valueOf(member.getId()));
        holder.textName.setText(member.getName());
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ImageView imageView = new ImageView(context);
                imageView.setImageResource(member.getImage());
                Toast toast = new Toast(context);
                toast.setView(imageView);
                toast.setDuration(Toast.LENGTH_SHORT);
                toast.show();
            }
        });
    }

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

    class ViewHolder extends RecyclerView.ViewHolder{
        ImageView imageId;
        TextView textId, textName;
        ViewHolder(View itemView) {
            super(itemView);
            imageId = (ImageView) itemView.findViewById(R.id.imageId);
            textId = (TextView) itemView.findViewById(R.id.textId);
            textName = (TextView) itemView.findViewById(R.id.textName);
        }
    }
}
}

activity_main.xml中

<LinearLayout 
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />
</LinearLayout>

recyclerview_cardview_item.xml

<android.support.v7.widget.CardView 
android:id="@+id/cardview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="6dp"
android:padding="6dp"
app:cardBackgroundColor="#ffdddddd"
app:cardCornerRadius="28dp"
app:cardElevation="6dp">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/imageId"
        android:layout_width="120dp"
        android:layout_height="160dp"
        android:layout_marginStart="16dp" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="12dp"
            android:layout_marginStart="20dp" />

        <TextView
            android:id="@+id/textName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="12dp"
            android:layout_marginStart="24dp" />
    </LinearLayout>
</LinearLayout>

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

Answer 1

您需要将cardview和linearlayout的高度更改为wrap_content

<android.support.v7.widget.CardView 
android:id="@+id/cardview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="6dp"
android:padding="6dp"
app:cardBackgroundColor="#ffdddddd"
app:cardCornerRadius="28dp"
app:cardElevation="6dp">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

StaggeredGridLayoutManager在滚动时更改项目大小

1 个答案: