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私はこのメニューの中にメニューを持っているレストランを作成しようとしています。あなたが好きな食べ物を選びました。ピザを食べたいときやピザを押したときに言うことができます。それは別の種類のピザを持つ別のメニューを開き、あなたが別のアクティビティに移動し、ピザの詳細を表示する必要があるピザを押しても、私には表示されず、問題が何であるか分かりません。ファイヤーベースで別のアクティビティで食品の詳細を開く
これは私の食品リストの活動
package com.example.median1.demo;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.squareup.picasso.Picasso;
public class FoodLIst extends AppCompatActivity {
RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;
FirebaseDatabase database;
DatabaseReference foodList;
String categoryId;
FirebaseRecyclerAdapter<Food,FoodViewHolder>adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_food_list);
//firebase
database=FirebaseDatabase.getInstance();
foodList= database.getReference("Foods");
recyclerView=(RecyclerView)findViewById(R.id.recycler_food);
recyclerView.setHasFixedSize(true);
layoutManager=new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
//get food list intent
if(getIntent()!=null){
categoryId=getIntent().getStringExtra("CategoryId");
if(!categoryId.isEmpty()&& categoryId!=null){
loadListFood(categoryId);
}
}
}
private void loadListFood(String categoryId) {
adapter=new FirebaseRecyclerAdapter<Food, FoodViewHolder>(Food.class,
R.layout.food_item,
FoodViewHolder.class,
foodList.orderByChild("MenuId").equalTo(categoryId)) {
@Override
protected void populateViewHolder(FoodViewHolder viewHolder, Food model, int position) {
viewHolder.food_name.setText(model.getName());
Picasso.with(getBaseContext()).load(model.getImage())
.into(viewHolder.food_image);
final Food local=model;
viewHolder.setItemClicklistener(new ItemClickListener() {
@Override
public void onClick(View view, int position, boolean isLongClick) {
// start new activity for the food destails
Intent foodDetails=new Intent(FoodLIst.this,FoodDetail.class);
foodDetails.putExtra("FoodId",adapter.getRef(position).getKey()); //send foood id to new activity
startActivity(foodDetails);
}
});
}
};
//set adapter
Log.d("TAG",""+adapter.getItemCount());
recyclerView.setAdapter(adapter);
}
}
であり、これは私の食品の詳細活動
あるpackage com.example.median1.demo;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import com.cepheuen.elegantnumberbutton.view.ElegantNumberButton;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.squareup.picasso.Picasso;
import java.io.File;
public class FoodDetail extends AppCompatActivity {
TextView food_name,food_price,food_description;
ImageView food_image;
CollapsingToolbarLayout collapsingToolbarLayout;
FloatingActionButton btnCart;
ElegantNumberButton numberButton;
String foodId="";
FirebaseDatabase database;
DatabaseReference foods;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_food_detail);
//firebase
database=FirebaseDatabase.getInstance();
foods=database.getReference("Foods");
//int View
numberButton=(ElegantNumberButton)findViewById(R.id.number_button);
btnCart=(FloatingActionButton)findViewById(R.id.btnCart);
food_description=(TextView)findViewById(R.id.food_description2);
food_name=(TextView)findViewById(R.id.food_name);
food_price=(TextView)findViewById(R.id.food_price);
food_image=(ImageView)findViewById(R.id.img_food);
collapsingToolbarLayout=(CollapsingToolbarLayout)findViewById(R.id.collapsing);
collapsingToolbarLayout.setExpandedTitleTextAppearance(R.style.ExpandedAppbar);
collapsingToolbarLayout.setCollapsedTitleTextAppearance(R.style.CollapsedAppbar);
//get food id from the intent
if(getIntent()!=null)
foodId=getIntent().getStringExtra("FoodId");
if(foodId.isEmpty()){
getDetailFood(foodId);
}
}
private void getDetailFood(String foodId) {
foods.child(foodId).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
Food food=dataSnapshot.getValue(Food.class);
//set image
Picasso.with(getBaseContext()).load(food.getImage()).into(food_image);
collapsingToolbarLayout.setTitle(food.getName());
food_price.setText(food.getPrice());
food_name.setText(food.getName());
food_description.setText(food.getDescription());
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
}
、これは私がfirebase
package com.example.median1.demo;
/**
* Created by median1 on 11/5/2017.
*/
public class Food {
private String Name,Image,Description,Price,Discount,MenuId;
public Food() {
}
public Food(String name, String image, String description, String price, String discount, String menuId) {
Name = name;
Image = image;
Description = description;
Price = price;
Discount = discount;
MenuId = menuId;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getImage() {
return Image;
}
public void setImage(String image) {
Image = image;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
public String getPrice() {
return Price;
}
public void setPrice(String price) {
Price = price;
}
public String getDiscount() {
return Discount;
}
public void setDiscount(String discount) {
Discount = discount;
}
public String getMenuId() {
return MenuId;
}
public void setMenuId(String menuId) {
MenuId = menuId;
}
}
からすべてのチャイルズを取得し、これは私が
その重要かどうかを知りいけない食品の詳細 のxmlです食品の詳細については、食品のクラスです<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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="com.example.median1.demo.FoodDetail">
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing"
android:layout_width="match_parent"
android:layout_height="350dp"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="#0e0d0e"
app:expandedTitleTextAppearance="@android:color/transparent">
<ImageView
android:id="@+id/img_food"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="@null"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
/>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:title="food name"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="parallax"
/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/btnCart"
android:src="@drawable/ic_shopping_cart_black_24dp"
android:backgroundTint="@android:color/white"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:elevation="6dp"
app:pressedTranslationZ="12dp"
app:layout_anchor="@id/app_bar_layout"
app:layout_anchorGravity="bottom|right|end"
app:useCompatPadding="true"
/>
<android.support.v4.widget.NestedScrollView
android:id="@+id/nestedScrollView"
android:clipToPadding="false"
android:layout_width="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:layout_height="match_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardElevation="5dp"
app:cardUseCompatPadding="true"
>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/food_name"
android:layout_marginTop="8dp"
android:padding="12dp"
android:text="Food name "
android:textSize="20sp"
android:textStyle="bold"
android:textColor="@color/colorPrimary"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="@+id/layout_price"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:src="@drawable/ic_attach_money_black_24dp"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/food_price"
android:text="1,000 "
android:textSize="18sp"
android:textStyle="bold"
android:textColor="@color/colorPrimary"
android:layout_width="0dp"
android:layout_weight="9"
android:layout_height="wrap_content" />
</LinearLayout>
<com.cepheuen.elegantnumberbutton.view.ElegantNumberButton
android:layout_width="100dp"
android:layout_height="30dp"
android:id="@+id/number_button"
android:layout_marginTop="8dp"
android:layout_marginLeft="8dp"
android:layout_marginBottom="18dp"
app:textSize="8sp"
app:backGroundColor="@color/colorAccent"
app:initialNumber="1"
app:finalNumber="20"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
app:cardElevation="5dp"
app:cardUseCompatPadding="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/food_description2"
android:layout_marginTop="12dp"
android:lineSpacingMultiplier="1.5"
android:padding="12dp"
android:text="description"
android:textColor="@android:color/black"
android:textSize="14sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</android.support.v7.widget.CardView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
Firebaseデータベース
