#5 #613 第5次实验和第5次实验报告

students/sec1814080911238/Fruit.java

@@ -0,0 +1,19 @@
+package edu.hzuapps.androidlabs.sec1814080911238;
+
+public class Fruit {
+    private String name;
+    private String imageId;
+
+    public Fruit(String name, String imageId) {
+        this.name = name;
+        this.imageId = imageId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getImageId() {
+        return imageId;
+    }
+}

students/sec1814080911238/FruitAdapter.java

@@ -0,0 +1,78 @@
+package edu.hzuapps.androidlabs.sec1814080911238;
+
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.List;
+
+import static android.content.Context.MODE_PRIVATE;
+
+public class FruitAdapter extends RecyclerView.Adapter<FruitAdapter.ViewHolder> {
+    private List<Fruit> mFruitList;
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        View fruitView;
+        TextView fruitImage;
+        TextView fruitName;
+        Button deleteBtn;
+
+        public ViewHolder(View view) {
+            super(view);
+            fruitView = view;
+            fruitImage = view.findViewById(R.id.textView1);
+            fruitName = view.findViewById(R.id.textView2);
+            deleteBtn = view.findViewById(R.id.button);
+        }
+    }
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.list_item, parent, false);
+        final ViewHolder holder = new ViewHolder(view);
+
+        holder.deleteBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                //获取SharePreferences(参数1：文件名，参数2：模式)
+//                SharedPreferences sp = getSharedPreferences ("localData",MODE_PRIVATE);
+                //获取Editor对象
+//                SharedPreferences.Editor editor = sp.edit ();
+                int position = holder.getAdapterPosition();
+                Fruit fruit = mFruitList.get(position);     
+
+                Toast.makeText(view.getContext(), fruit.getName(), Toast.LENGTH_SHORT).show();
+
+            }
+        });
+        return holder;
+
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        Fruit fruit = mFruitList.get(position);
+        holder.fruitImage.setText(fruit.getImageId());
+        holder.fruitName.setText(fruit.getName());
+    }
+
+    @Override
+    public int getItemCount() {
+        return mFruitList.size();
+    }
+
+    public FruitAdapter(List<Fruit> fruitList) {
+        mFruitList = fruitList;
+    }
+
+}

students/sec1814080911238/InputActivity.java

@@ -1,25 +1,59 @@
 package edu.hzuapps.androidlabs.sec1814080911238;
 
-import android.app.Activity;
-import android.content.Intent;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
+import android.widget.EditText;
 import android.widget.Toast;
 
 import androidx.appcompat.app.AppCompatActivity;
 
 public class InputActivity extends AppCompatActivity {
+    private EditText str01,str02;
+    int num = 0;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.input_activity);
 
-        final Activity thisActivity = this;
+        final InputActivity thisActivity = this;
+
         Button btnOpen3 = (Button) findViewById(R.id.button3);
+        str01 = findViewById (R.id.editText1);
+        str02 = findViewById (R.id.editText2);
         btnOpen3.setOnClickListener(new View.OnClickListener() {
             public void onClick(View view) {
-                Toast.makeText(InputActivity.this, "保存成功", Toast.LENGTH_LONG).show();
+                //获取两个输入框的内容
+                String string01 = str01.getText ().toString ();
+                String string02 = str02.getText ().toString ();
+                //将信息存储到SharePreferences
+                if(string01.equals ("") || string02.equals ("")){           //input框验证
+                    Toast.makeText (InputActivity.this,"单纯中英文不能为空",Toast.LENGTH_LONG).show ();
+                }else {         //入库处理
+                    //获取SharePreferences(参数1：文件名，参数2：模式)
+                    SharedPreferences sharedPreferences = getSharedPreferences ("localData",MODE_PRIVATE);
+                    //获取Editor对象
+                    SharedPreferences.Editor editor = sharedPreferences.edit ();
+                    //找到localData中最后一条，在最后一条数据后面进行num编号添加
+                    boolean flag = true;
+                    while (flag) {
+                        if(sharedPreferences.contains("English" + num)) {
+                            num ++;
+                        } else {
+                            flag =false;
+                        }
+                    }
+                    //存储信息
+                    editor.putString ("English" + num,string01);
+                    editor.putString ("China" + num,string02);
+                    //提交
+                    editor.commit ();
+                    num++;
+                    str01.setText("");
+                    str02.setText("");
+                    Toast.makeText (InputActivity.this,"保存成功",Toast.LENGTH_SHORT).show ();
+                }
             }
         });
     }

students/sec1814080911238/RememberActivity.java

@@ -1,13 +1,46 @@
 package edu.hzuapps.androidlabs.sec1814080911238;
 
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+import java.util.List;
 
 public class RememberActivity extends AppCompatActivity {
+    private List<Fruit> fruitList = new ArrayList<>();
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.remember_activity);
+
+        initFruits();
+        RecyclerView recyclerView = findViewById(R.id.recycler_view);
+        LinearLayoutManager layoutManager= new LinearLayoutManager(this);
+        recyclerView.setLayoutManager(layoutManager);
+        FruitAdapter adapter = new FruitAdapter(fruitList);
+        recyclerView.setAdapter(adapter);
     }
+    private void initFruits() {
+        SharedPreferences sp = getSharedPreferences ("localData",MODE_PRIVATE);
+
+        boolean flag = true;
+        int num = 0;
+        while (flag) {
+            if(sp.contains("English" + num)) {      //判断localData中是否存在该数据，如何如果存在则通过Fruit渲染成列表
+                System.out.println(sp.getString("English" + num,""));
+                System.out.println( sp.getString("China" + num,""));
+                Fruit apple = new Fruit(sp.getString("English" + num,""), sp.getString("China" + num,""));      // 创建 Fruit 对象
+                fruitList.add(apple);       // 将 apple 传入 fruitList 渲染类中
+                num ++;         //num++渲染下一个单词
+            } else {
+                flag =false;
+            }
+        }
+    }
+
 }

students/sec1814080911238/input_activity.xml

@@ -22,11 +22,11 @@
         android:layout_height="20sp"
         android:layout_marginLeft="30dp"
         android:layout_marginTop="20dp"
-        android:text="单词英文"
+        android:text="单词"
         android:textSize="18sp"/>
 
     <EditText
-        android:id="@+id/editText"
+        android:id="@+id/editText1"
         android:layout_width="300dp"
         android:layout_height="wrap_content"
         android:layout_marginLeft="30dp"
@@ -40,9 +40,10 @@
         android:layout_height="20sp"
         android:layout_marginLeft="30dp"
         android:layout_marginTop="20dp"
-        android:text="中文翻译" />
+        android:text="翻译" />
 
     <EditText
+        android:id="@+id/editText2"
         android:layout_width="300dp"
         android:layout_height="wrap_content"
         android:layout_marginLeft="30dp"

students/sec1814080911238/list_item.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="horizontal" android:layout_width="match_parent"
-    android:layout_height="wrap_content"
+    android:layout_height="50dp" android:layout_marginBottom="10dp"
     >
 
         <LinearLayout
@@ -12,20 +12,19 @@
             <TextView
                 android:id="@+id/textView1"
                 android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="left"
+                android:layout_height="50dp"
                 android:text="卤蛋"
+                android:gravity="center"
                 android:textSize="20sp" />
 
             <TextView
                 android:id="@+id/textView2"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
+                android:layout_width="0dp"
+                android:layout_height="0dp"
                 android:layout_marginBottom="10dp"
-                android:text="Marinated Egg"
                 android:textSize="16sp" />
-        </LinearLayout>
 
+        </LinearLayout>
 
         <LinearLayout
             android:layout_width="match_parent"
@@ -38,7 +37,8 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="right"
                 android:background="@color/btnColor"
-                android:text="记住了" />
+                android:text="查看翻译" />
         </LinearLayout>
 
+
 </LinearLayout>

students/sec1814080911238/remember_activity.xml

@@ -15,26 +15,10 @@
             android:layout_height="wrap_content"
             android:orientation="vertical">
 
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-            <include layout="@layout/list_item" />
-
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/recycler_view"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"/>
 
         </LinearLayout>