在Android中使用相同的片段但内容不同 [英] Using same fragments but different content in Android

问题描述

是这种情况. 我正在尝试开发一个Android应用程序，该应用程序将使用CardView显示餐厅列表.每次用户单击餐厅时，它将显示一个屏幕，其中包含3个带有滑动视图的片段-DetailsFragment，MenuFragment和TableBookingFragment.

Here's the case. I am trying to develop an Android app that will display a list of restaurant using CardView. Each time the user click a restaurant, it will display a screen that contains 3 fragments with swipe view - DetailsFragment, MenuFragment and TableBookingFragment.

我是Android开发的新手，所以不确定应该怎么做.

I am a novice in Android development so I am not sure what should I do.

最初，我想到了用户点击其他餐厅的开始意图.但是在那种情况下，我将不得不为不同的餐厅创建如此多的活动.假设我的列表中有10家餐厅，我将不得不构建10个描述不同细节和菜单的活动(但使用相同的布局).

Initially I thought of starting intent for different restaurant the user clicked. But in that case, I would have to create so many activities for different restaurant. Let say I have 10 restaurant in my list, I would have to build 10 activities that describe different details and menu (but using the same layout).

是否有更好的方法来显示不同餐厅的详细信息和菜单(而不必创建太多活动)?

Is there any better way to display details and menu for different restaurant (without having to create so many activities)?

如果我对问题的描述不够清楚，请告诉我.

Do let me know if I did not describe my question clear enough.

谢谢.

public class Restaurant extends AppCompatActivity {

private TabLayout tabLayout;
private ViewPager viewPager;

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

    viewPager = (ViewPager) findViewById(R.id.viewpager);
    setupViewPager(viewPager);

    tabLayout = (TabLayout) findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(viewPager);
}

private void setupViewPager(ViewPager viewPager){
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFragment(new details(), "Details");
    adapter.addFragment(new menu(), "Menu");
    adapter.addFragment(new tableBooking(), "Table booking");
    viewPager.setAdapter(adapter);
}

class ViewPagerAdapter extends FragmentPagerAdapter{

    private final List<Fragment> fragmentList = new ArrayList<>();
    private final List<String> fragmentTitleList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager){
        super(manager);
    }

    @Override
    public Fragment getItem(int position) {
        return fragmentList.get(position);
    }

    @Override
    public int getCount() {
        return fragmentList.size();
    }

    public void addFragment (Fragment fragment, String title){
        fragmentList.add(fragment);
        fragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return fragmentTitleList.get(position);
    }
}

}

 public class RestaurantListAdapter extends RecyclerView.Adapter<RestaurantListAdapter.ViewHolder>  {
    List<RestaurantList_Item> items;
    private static ClickListener clickListener;
    private Context context;

    public RestaurantListAdapter(){
        super();
        items = new ArrayList<RestaurantList_Item>();

        // POSITION 1
        RestaurantList_Item restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_anjappar);
        restaurant.setrName("Anjappar Indian Chettinad Restaurant");
        restaurant.setrCuisine("Indian");
        items.add(restaurant);

        // POSITION 2
        restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_morganfield);
        restaurant.setrName("Morganfield");
        restaurant.setrCuisine("Western");
        items.add(restaurant);

        // POSITION 3
        restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_nandos);
        restaurant.setrName("Nando's");
        restaurant.setrCuisine("Western");
        items.add(restaurant);

        // POSITION 4
        restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_shellout);
        restaurant.setrName("Shellout");
        restaurant.setrCuisine("Seafood");
        items.add(restaurant);

        // POSITION 5
        restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_beyond);
        restaurant.setrName("Beyond Veggie");
        restaurant.setrCuisine("Vegetarian");
        items.add(restaurant);

        // POSITION 6
        restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_myelephant);
        restaurant.setrName("My Elephant");
        restaurant.setrCuisine("Thai");
        items.add(restaurant);

        // POSITION 7
        restaurant = new RestaurantList_Item();
        restaurant.setrImage(R.mipmap.img_padangkota);
        restaurant.setrName("Nasi Kandar Padang Kota");
        restaurant.setrCuisine("Mamak");
        items.add(restaurant);

    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {

        View v = LayoutInflater.from(viewGroup.getContext())
                .inflate(R.layout.cardview_restaurant, viewGroup, false);
        ViewHolder viewHolder = new ViewHolder(v);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(final ViewHolder viewHolder, final int position) {
        RestaurantList_Item restaurant = items.get(position);
        viewHolder.resImage.setImageResource(restaurant.getrImage());
        viewHolder.restaurantName.setText(restaurant.getrName());
        viewHolder.cuisine.setText(restaurant.getrCuisine());
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                Context context = v.getContext();
//                Toast.makeText(context, "Item clicked with position " +position, Toast.LENGTH_LONG).show();
            }
        });
    }

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

    @Override
    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
        super.onAttachedToRecyclerView(recyclerView);
    }

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
        public ImageView resImage;
        public TextView restaurantName;
        public TextView cuisine;

        public ViewHolder(final View itemView) {
            super(itemView);
            resImage = (ImageView) itemView.findViewById(R.id.resImage);
            restaurantName = (TextView) itemView.findViewById(R.id.restaurantName);
            cuisine = (TextView) itemView.findViewById(R.id.cuisine);
            itemView.setOnClickListener(this);
        }


        @Override
        public void onClick(View v) {
            clickListener.onItemClick(getAdapterPosition(), v);
        }

    }

    public void setOnItemClickListener (ClickListener clickListener){
        RestaurantListAdapter.clickListener = clickListener;
    }

    public interface ClickListener{
        void onItemClick (int position, View v);
    }
}

details.java-(Restaurant.java中的第一个片段)

public class details extends Fragment {

    public details() {
        // Required empty public constructor
    }


    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_details, container, false);
    }

}

menu.java(第二个片段)

public class menu extends Fragment {


    public menu() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_menu, container, false);
    }

}

fragment_details.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.jenna.iwanteat.fragments.details">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:id="@+id/resName"
        android:text="Restaurant Name"
        android:textSize="16sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="20dp"
    />

    <TextView
        android:id="@+id/resAddress"
        android:text="Restaurant Address"
        android:textSize="12sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="45dp"
        android:layout_marginLeft="20dp"
        />

    <TextView
        android:id="@+id/resPhone"
        android:text="Restaurant Phone"
        android:textSize="12sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="65dp"
        android:layout_marginLeft="20dp"
        />

    <TextView
        android:id="@+id/resCuisine"
        android:text="Types of Cuisine"
        android:textSize="12sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="85dp"
        android:layout_marginLeft="20dp"
        />

    <TextView
        android:id="@+id/resPriceRange"
        android:text="Price Range"
        android:textSize="12sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="105dp"
        android:layout_marginLeft="20dp"
        android:textStyle="italic"
        />



</FrameLayout>

RestaurantModel.java

public class RestaurantModel {

    // variable main photo
    private int mainImage;

    //variables for details fragment
    private String resName, resAddress, resPhone, resCuisine, resPriceRange;

    //variables for menu fragment
    private int foodPhoto;
    private String foodPrice, foodDescription;

    //get set methods
    public int getMainImage(){
        return mainImage;
    }

    public void setMainImage(int mainImage){
        this.mainImage = mainImage;
    }

    public String getResName(){
        return resName;
    }

    public void setResName(String resName){
        this.resName = resName;
    }

    public String getResAddress(){return resAddress;}

    public void setResAddress(String resAddress){this.resAddress = resAddress;}

    public String getResPhone(){return resPhone;}

    public void setResPhone(String resPhone){this.resPhone = resPhone;}

    public String getResCuisine(){return resCuisine;}

    public void setResCuisine(String resCuisine){this.resCuisine = resCuisine;}

    public String getResPriceRange(){return resPriceRange;}

    public void setResPriceRange(String resPriceRange){this.resPriceRange = resPriceRange;}

    public int getFoodPhoto(){return foodPhoto;}

    public void setFoodPhoto(int foodPhoto){this.foodPhoto = foodPhoto;}

    public String getFoodDescription(){return foodDescription;}

    public void setFoodDescription(String foodDescription){this.foodDescription = foodDescription;}

    public String getFoodPrice(){return foodPrice;}

    public void setFoodPrice(String foodPrice){this.foodPrice = foodPrice;}
}

推荐答案

您要显示具有相同布局的不同数据 为什么不添加，仅发送这些fragmnet的数据

you want to show different data with the same layout why you didn't add send just the data for these fragmnet

   Intent intent = new Intent(your activity,your new activity which    
   contain container for your fragment)
   intent.putExtra("key","String you want to send");

收到意图

        String id = intent.getStringExtra("key");

或将数据放在包中并通过片段发送(如果您在片段中使用cardview) 发送数据

or put data in bundle and send via fragment if you using cardview in fragment send data

Bundle bundle = new Bundle();
bundle.putString("edttext", "From Activity");
// set Fragmentclass Arguments
Fragmentclass fragobj = new Fragmentclass();
fragobj.setArguments(bundle); 

分批接收

   String strtext = getArguments().getString("edttext");    

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