為什么我的頁面在點擊“每日餐”時滯后

我正在處理送餐申請。我在選單欄中有四個選項卡Home、Daily Meal和。我的所有選項卡都運行良好，但是當我單擊我的頁面時正在呈現。我正在搜索他們，但沒有找到任何解決方案。我被這個問題困住了 2 天。請看看我的問題并解決它。提前致謝。FavouriteMy CartDaily Meal

這是我的代碼：

daily_meal_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ui.DailyMeal.DailyMealFragment">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@ id/daily_meal_rec"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

daily_meal_ver.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginBottom="10dp">

    <ImageView
        android:id="@ id/imgview"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:scaleType="centerCrop"
        android:src="@drawable/breakfast"
        android:foreground="@drawable/blur"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@ id/names"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/amita_bold"
        android:text="Dinner"
        android:textColor="@color/white"
        android:textSize="40sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="@ id/imgview"
        app:layout_constraintEnd_toEndOf="@ id/imgview"
        app:layout_constraintStart_toStartOf="@ id/imgview"
        app:layout_constraintTop_toTopOf="@ id/imgview"
        app:layout_constraintVertical_bias="0.3" />

    <TextView
        android:id="@ id/desc"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/amita"
        android:text="Choose your best dinner"
        android:textColor="@color/white"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@ id/names" />

    <TextView
        android:id="@ id/discounts"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/off_back"
        android:padding="2sp"
        android:text=" 20% OFF  "
        android:textColor="#FFFFFF"
        android:textSize="16sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="@ id/imgview"
        app:layout_constraintStart_toStartOf="@ id/imgview"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.821" />
</androidx.constraintlayout.widget.ConstraintLayout>

DailyMealModel.java

public class DailyMealModel {
    int image;
    String name;
    String discount;
    String description;
    
    // getter setter and constructor
}

DailyMealFragment.java

public class DailyMealFragment extends Fragment {
    RecyclerView recyclerView;
    List<DailyMealModel> dailyMealModels;
    DailyMealAdapter dailyMealAdapter;

    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.daily_meal_fragment,container,false);

        recyclerView = root.findViewById(R.id.daily_meal_rec);

        dailyMealModels = new ArrayList<>();
        dailyMealModels.add(new DailyMealModel(R.drawable.breakfast,"Breakfast","30% OFF","Description Description"));
        dailyMealModels.add(new DailyMealModel(R.drawable.lunch,"Lunch","15% OFF","Description Description"));

        dailyMealAdapter = new DailyMealAdapter(getContext(),dailyMealModels);
        recyclerView.setAdapter(dailyMealAdapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        return root;
    }
}

DailyMealAdapter.java

public class DailyMealAdapter extends RecyclerView.Adapter<DailyMealAdapter.viewholder> {
    Context context;
    List<DailyMealModel> list;

    public DailyMealAdapter(Context context, List<DailyMealModel> list) {
        this.context = context;
        this.list = list;
    }

    @NonNull
    @Override
    public viewholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new viewholder(LayoutInflater.from(parent.getContext()).inflate(R.layout.daily_meal_ver,parent,false));
    }

    @Override
    public void onBindViewHolder(@NonNull viewholder holder, int position) {
        holder.img.setImageResource(list.get(position).getImage());
        holder.name.setText(list.get(position).getName());
        holder.discount.setText(list.get(position).getDiscount());
        holder.description.setText(list.get(position).getDescription());

    }

    @Override
    public int getItemCount() {

        return list.size();
    }

    public class viewholder extends RecyclerView.ViewHolder {
        ImageView img;
        TextView name,discount,description;
        public viewholder(@NonNull View itemView) {
            super(itemView);
            img = itemView.findViewById(R.id.imgview);
            name = itemView.findViewById(R.id.names);
            description = itemView.findViewById(R.id.desc);
            discount = itemView.findViewById(R.id.discounts);

        }
    }
}

快照

uj5u.com熱心網友回復：

作為您所附的螢屏截圖，請確保應用程式中使用的所有影像和圖示都較小，即使加載您也可以使用 tinypng.com 或 tinyjpg.com 的動態影像，在 RecyclerView 中使用分頁將提高您的應用程式性能。并確保 JSON/XML 串列回應最小。

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