diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 924066e..f00fd17 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -35,8 +35,9 @@
 
             tools:targetApi="31">
 
+
         <activity
-                android:name=".first"
+                android:name=".MainActivity"
                 android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
@@ -44,10 +45,12 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
-        <activity android:name=".second"/>
-        <activity android:name=".four"/>
-        <activity android:name=".collection"/>
+        <activity android:name=".WordSearchActivity"/>
+        <activity android:name=".PictureSearchActivity"/>
+        <activity android:name=".CollectActivity"/>
         <activity android:name=".WebViewActivity"/>
+
+
         <provider
                 android:authorities="com.example.takephoto.fileprovider"
                 android:name="androidx.core.content.FileProvider"
diff --git a/app/src/main/java/com/example/ceshi/CollectActivity.java b/app/src/main/java/com/example/ceshi/CollectActivity.java
new file mode 100644
index 0000000..eb87b32
--- /dev/null
+++ b/app/src/main/java/com/example/ceshi/CollectActivity.java
@@ -0,0 +1,139 @@
+package com.example.ceshi;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import android.os.Bundle;
+
+/**
+ *  建立sqlite数据库，进行用户名和密码的存储
+ */
+public class CollectActivity extends AppCompatActivity implements View.OnClickListener{
+
+    //编辑框，输入
+    EditText username;
+    EditText password;
+    //EditText selectuser;
+
+    //结果文本框
+    TextView result;
+
+    //3个按钮
+    Button buttonadd;
+    Button buttondelete;
+    Button buttonselect;
+
+    //帮助建立sqlite数据库
+    SQLiteOpenHelper mysqlhelper;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.collect_activity);
+
+        init();
+        buttonadd.setOnClickListener(this);
+        buttondelete.setOnClickListener(this);
+        buttonselect.setOnClickListener(this);
+    }
+
+    public void init(){
+        username = findViewById(R.id.username);
+        password = findViewById(R.id.password);
+        //selectuser = findViewById(R.id.selectuser);
+
+        result = findViewById(R.id.result);
+
+        buttonadd = findViewById(R.id.buttonadd);
+        buttondelete = findViewById(R.id.buttondelete);
+        buttonselect = findViewById(R.id.buttonselect);
+//        mysqlhelper = new MyDBHelper(MainActivity.this, "MyDatabase.db", null, 666);
+//        //SQLiteDatabase db = mysqlhelper.getWritableDatabase();
+    }
+
+    @Override
+    public void onClick(View v) {
+
+        mysqlhelper = new MyDBHelper(CollectActivity.this, "MyDatabase.db", null, 666);
+        SQLiteDatabase db;
+        String username1 = null;
+        String password1 = null;
+        Log.v("start","按钮事件：");
+        switch(v.getId()){
+            case R.id.buttonadd:
+                db = mysqlhelper.getWritableDatabase();
+                username1 = username.getText().toString();
+                password1 = password.getText().toString();
+                if(username1==null&&username1==""&&username1==" "){
+                    Toast.makeText(CollectActivity.this,"用户名不能为空",Toast.LENGTH_LONG).show();
+                    Log.v("start","添加失败");
+                }else if(password1==null){
+                    Toast.makeText(CollectActivity.this,"密码不能为空",Toast.LENGTH_LONG).show();
+
+                }else {
+                    db.execSQL("insert into user(username,password) values(?,?)", new Object[]{username1, password1});
+                    Toast.makeText(CollectActivity.this,"添加成功",Toast.LENGTH_LONG).show();
+                    //result.setText("查询结果为：");
+                    //result.append("标题"+username1+"内容"+password1);
+                }
+                db.close();
+                break;
+
+            case R.id.buttondelete:
+                db = mysqlhelper.getWritableDatabase();
+                String usernamed = username.getText().toString();
+
+                db.execSQL("delete from user where username=?",new Object[]{usernamed});
+                db.close();
+                Toast.makeText(CollectActivity.this,"删除成功",Toast.LENGTH_LONG).show();
+                break;
+            case R.id.buttonselect:
+                result.setText("查询结果为：");
+                db = mysqlhelper.getWritableDatabase();
+
+                Cursor cursor = db.rawQuery("select * from user ",null );
+                while (cursor.moveToNext()){
+                    result.append("\n" +"________________________________________________________________________"+"\n"+
+                            "标题：" + cursor.getString(1) +"\n" +
+                            "内容：" + cursor.getString(2));
+                }
+                cursor.close();
+                db.close();
+                Toast.makeText(CollectActivity.this,"查询成功",Toast.LENGTH_LONG).show();
+                Log.v("start","查询成功");
+                break;
+        }
+    }
+
+    /**
+     * sqlite数据库创建帮助类
+     */
+    public class MyDBHelper extends SQLiteOpenHelper{
+
+        public MyDBHelper(@Nullable Context context, @Nullable String name, @Nullable SQLiteDatabase.CursorFactory factory, int version) {
+            super(context, name, factory, version);
+        }
+
+        @Override
+        public void onCreate(SQLiteDatabase db) {
+            db.execSQL("CREATE TABLE user(" +
+                    "user_id INTEGER PRIMARY KEY AUTOINCREMENT," +
+                    "username VARCHAR(2000),"+
+                    "password VARCHAR(20000)"+
+                    ")");
+        }
+
+        @Override
+        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/ceshi/first.java b/app/src/main/java/com/example/ceshi/MainActivity.java
similarity index 87%
rename from app/src/main/java/com/example/ceshi/first.java
rename to app/src/main/java/com/example/ceshi/MainActivity.java
index 88d982b..2723db4 100644
--- a/app/src/main/java/com/example/ceshi/first.java
+++ b/app/src/main/java/com/example/ceshi/MainActivity.java
@@ -1,18 +1,17 @@
 package com.example.ceshi;
 
 import android.content.Intent;
-import android.os.StrictMode;
 import android.view.View;
 import android.widget.Button;
 import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;
 
-public class first extends AppCompatActivity {
+public class MainActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.firstview);
+        setContentView(R.layout.main_activity);
 
         //获取按钮
         Button button = findViewById(R.id.button);
@@ -26,7 +25,7 @@ public class first extends AppCompatActivity {
                 //监听按钮，如果点击，就跳转
                 Intent intent = new Intent();
                 //前一个（MainActivity.this）是目前页面，后面一个是要跳转的下一个页面
-                intent.setClass(first.this,second.class);
+                intent.setClass(MainActivity.this, WordSearchActivity.class);
                 startActivity(intent);
             }
         });
@@ -46,7 +45,7 @@ public class first extends AppCompatActivity {
                 //监听按钮，如果点击，就跳转
                 Intent intent = new Intent();
                 //前一个（MainActivity.this）是目前页面，后面一个是要跳转的下一个页面
-                intent.setClass(first.this, four.class);
+                intent.setClass(MainActivity.this, PictureSearchActivity.class);
                 startActivity(intent);
             }
         });
@@ -56,7 +55,7 @@ public class first extends AppCompatActivity {
                 //监听按钮，如果点击，就跳转
                 Intent intent = new Intent();
                 //前一个（MainActivity.this）是目前页面，后面一个是要跳转的下一个页面
-                intent.setClass(first.this, collection.class);
+                intent.setClass(MainActivity.this, CollectActivity.class);
                 startActivity(intent);
             }
         });
diff --git a/app/src/main/java/com/example/ceshi/four.java b/app/src/main/java/com/example/ceshi/PictureSearchActivity.java
similarity index 72%
rename from app/src/main/java/com/example/ceshi/four.java
rename to app/src/main/java/com/example/ceshi/PictureSearchActivity.java
index 3c709cc..5745aaa 100644
--- a/app/src/main/java/com/example/ceshi/four.java
+++ b/app/src/main/java/com/example/ceshi/PictureSearchActivity.java
@@ -20,9 +20,7 @@ import android.widget.Toast;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.content.FileProvider;
 
-import com.baidu.ai.aip.ImgCombination;
-import com.baidu.ai.aip.ToIngredient;
-import com.baidu.ai.aip.Ingredient;
+import com.transfer.Ingredient;
 
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -31,7 +29,7 @@ import java.io.IOException;
 import java.util.Random;
 
 
-public class four extends AppCompatActivity {
+public class PictureSearchActivity extends AppCompatActivity {
 
     Bitmap bitmap;
     final int TAKE_PHOTO=1;
@@ -51,7 +49,7 @@ public class four extends AppCompatActivity {
 
 
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.fourview);
+        setContentView(R.layout.picture_search_activity);
 
         btn_1=findViewById(R.id.btn_takephoto);
         iv_photo=findViewById(R.id.img_photo);
@@ -72,7 +70,7 @@ public class four extends AppCompatActivity {
                 }
                 if (Build.VERSION.SDK_INT>=24){
                     //图片的保存路径
-                    imageUri= FileProvider.getUriForFile(four.this,"com.example.takephoto.fileprovider",output);
+                    imageUri= FileProvider.getUriForFile(PictureSearchActivity.this,"com.example.takephoto.fileprovider",output);
                 }
                 else { imageUri=Uri.fromFile(output);
                 }
@@ -84,9 +82,6 @@ public class four extends AppCompatActivity {
         });
 
 
-//        String str =  ImgCombination.imgCombination();
-//        String name=str.substring(str.indexOf("name")+7,str.indexOf("\"}"));
-//        String odds=str.substring(str.indexOf("score")+7,str.indexOf(","));
     }
 
     public void saveImageToGallery(Context context, Bitmap bitmap) {
@@ -148,41 +143,11 @@ public class four extends AppCompatActivity {
                         //将图片保存
                         bitmap= BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));
                         iv_photo.setImageBitmap(bitmap);
-                        saveImageToGallery(four.this,bitmap);
+                        saveImageToGallery(PictureSearchActivity.this,bitmap);
 
                         Ingredient qw=new Ingredient(a);
-                        //t1.setText("###"+qw.ingredient());
-                        //ToIngredient qw=new ToIngredient(a);
                         String str=qw.ingredient();
-//                        String name=str.substring(str.indexOf("name")+7,str.indexOf("\"}"));
-//                        String odds=str.substring(str.indexOf("score")+7,str.indexOf(","));
-//                        String k="有"+odds.substring(0,4)+"的概率是"+name;
-                        t1.setText("图片保存位置:"+"\n"+a+"\n"+"识别结果："+"\n"+str);//qw.ingredient());
-                        //public void saveMyBitmap(Bitmap mBitmap,String bitName){\n\n
-
-//                        File f = new File( "/sdcard/baidu/"+"jpg1" + ".jpg");
-//                        FileOutputStream fOut = null;
-//                        fOut = new FileOutputStream(f);
-//                        bitmap.compress(Bitmap.CompressFormat.JPEG,100, fOut);
-
-
-//                        ToIngredient to_in=new ToIngredient();
-
-//                        ImgCombination img1=new ImgCombination();
-//                        String str1 =img1.imgCombination();
-//                        ToIngredient ii= new ToIngredient();
-//                        String aa=ii.x();
-
-//                        String name=str.substring(str.indexOf("name")+7,str.indexOf("\"}"));
-//                        TextView t1=()findViewById(R.id.textView11);
-//                        t1.setText(str1);
-
-//                        ImgCombination img=new ImgCombination();
-//                        String str11 =  img.imgCombination();
-//                        t1.setText("####"+str11);
-
-
-
+                        t1.setText("图片保存位置:"+"\n"+a+"\n"+"识别结果："+"\n"+str);
                     }catch (FileNotFoundException e){
                         e.printStackTrace();
                     }
diff --git a/app/src/main/java/com/example/ceshi/WebViewActivity.java b/app/src/main/java/com/example/ceshi/WebViewActivity.java
index c832e2b..95796a5 100644
--- a/app/src/main/java/com/example/ceshi/WebViewActivity.java
+++ b/app/src/main/java/com/example/ceshi/WebViewActivity.java
@@ -7,15 +7,12 @@ import android.webkit.WebViewClient;
 
 import androidx.appcompat.app.AppCompatActivity;
 
-import java.io.UnsupportedEncodingException;
-import java.net.URLEncoder;
-
 public class WebViewActivity extends AppCompatActivity {
     private WebView mWebView;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_web_view);
+        setContentView(R.layout.web_view_activity);
         mWebView = (WebView) findViewById(R.id.web_view);
         Intent intent = getIntent();
         String url = null;//"https://baike.baidu.com/item/"+intent.getStringExtra("url"); //"https://baidu.com/";//
diff --git a/app/src/main/java/com/example/ceshi/second.java b/app/src/main/java/com/example/ceshi/WordSearchActivity.java
similarity index 79%
rename from app/src/main/java/com/example/ceshi/second.java
rename to app/src/main/java/com/example/ceshi/WordSearchActivity.java
index 8934a68..e3cc2c3 100644
--- a/app/src/main/java/com/example/ceshi/second.java
+++ b/app/src/main/java/com/example/ceshi/WordSearchActivity.java
@@ -8,20 +8,20 @@ import android.widget.EditText;
 
 import androidx.appcompat.app.AppCompatActivity;
 
-public class second extends AppCompatActivity {
+public class WordSearchActivity extends AppCompatActivity {
     private EditText mEditUrl;
     private Button mBtnOpen;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.secondview);
+        setContentView(R.layout.word_search_activity);
 
         mEditUrl = (EditText) findViewById(R.id.edit_url);
         mBtnOpen = (Button) findViewById(R.id.btn_open);
         mBtnOpen.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                Intent intent = new Intent(second.this, WebViewActivity.class);
+                Intent intent = new Intent(WordSearchActivity.this, WebViewActivity.class);
                 String url = mEditUrl.getText().toString();
                 intent.putExtra("url", url);
                 startActivity(intent);
diff --git a/app/src/main/java/com/example/ceshi/collection.java b/app/src/main/java/com/example/ceshi/collection.java
deleted file mode 100644
index 123c49c..0000000
--- a/app/src/main/java/com/example/ceshi/collection.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.example.ceshi;
-
-import android.content.Intent;
-import android.view.View;
-import android.widget.Button;
-import androidx.appcompat.app.AppCompatActivity;
-import android.os.Bundle;
-public class collection extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.collview);
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/baidu/ai/aip/AuthService.java b/app/src/main/java/com/transfer/AuthService.java
similarity index 99%
rename from app/src/main/java/com/baidu/ai/aip/AuthService.java
rename to app/src/main/java/com/transfer/AuthService.java
index f0be876..32738a5 100644
--- a/app/src/main/java/com/baidu/ai/aip/AuthService.java
+++ b/app/src/main/java/com/transfer/AuthService.java
@@ -1,4 +1,4 @@
-package com.baidu.ai.aip;
+package com.transfer;
 
 import org.json.JSONObject;
 
diff --git a/app/src/main/java/com/baidu/ai/aip/ImgCombination.java b/app/src/main/java/com/transfer/ImgCombination.java
similarity index 98%
rename from app/src/main/java/com/baidu/ai/aip/ImgCombination.java
rename to app/src/main/java/com/transfer/ImgCombination.java
index 8624e90..12c7e9a 100644
--- a/app/src/main/java/com/baidu/ai/aip/ImgCombination.java
+++ b/app/src/main/java/com/transfer/ImgCombination.java
@@ -1,5 +1,5 @@
 
-package com.baidu.ai.aip;
+package com.transfer;
 
 import com.baidu.ai.aip.utils.HttpUtil;
 import com.baidu.ai.aip.utils.GsonUtils;
diff --git a/app/src/main/java/com/baidu/ai/aip/Ingredient.java b/app/src/main/java/com/transfer/Ingredient.java
similarity index 98%
rename from app/src/main/java/com/baidu/ai/aip/Ingredient.java
rename to app/src/main/java/com/transfer/Ingredient.java
index 710f936..fc1002a 100644
--- a/app/src/main/java/com/baidu/ai/aip/Ingredient.java
+++ b/app/src/main/java/com/transfer/Ingredient.java
@@ -1,5 +1,5 @@
 
-package com.baidu.ai.aip;
+package com.transfer;
 
 import android.graphics.Bitmap;
 
diff --git a/app/src/main/java/com/baidu/ai/aip/ToIngredient.java b/app/src/main/java/com/transfer/ToIngredient.java
similarity index 86%
rename from app/src/main/java/com/baidu/ai/aip/ToIngredient.java
rename to app/src/main/java/com/transfer/ToIngredient.java
index 6938477..8c8fde3 100644
--- a/app/src/main/java/com/baidu/ai/aip/ToIngredient.java
+++ b/app/src/main/java/com/transfer/ToIngredient.java
@@ -1,7 +1,4 @@
-package com.baidu.ai.aip;
-
-import com.baidu.ai.aip.ImgCombination;
-import com.example.ceshi.four;
+package com.transfer;
 
 public class ToIngredient{
     String name_odds="AAAAAAAAAAAA";
diff --git a/app/src/main/res/layout/collect_activity.xml b/app/src/main/res/layout/collect_activity.xml
new file mode 100644
index 0000000..e00a79d
--- /dev/null
+++ b/app/src/main/res/layout/collect_activity.xml
@@ -0,0 +1,121 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:gravity=""
+    android:orientation="vertical"
+    tools:context=".CollectActivity">
+    <!--    <ImageView-->
+    <!--        android:layout_gravity="center"-->
+    <!--        android:background="@mipmap/ic_launcher"-->
+    <!--        android:layout_width="100dp"-->
+    <!--        android:layout_height="100dp">-->
+    <!--    </ImageView>-->
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="标题"></EditText>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="69dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical">
+
+            <EditText
+                android:id="@+id/password"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:hint="内容"></EditText>
+
+        </LinearLayout>
+
+    </ScrollView>
+<!--    <EditText-->
+<!--        android:id="@+id/password"-->
+<!--        android:layout_width="match_parent"-->
+<!--        android:layout_height="wrap_content"-->
+<!--        android:hint="内容"></EditText>-->
+
+<!--    <Button-->
+<!--        android:id="@+id/buttonadd"-->
+<!--        android:layout_width="207dp"-->
+<!--        android:layout_height="50dp"-->
+
+<!--        android:text="添加收藏"></Button>-->
+
+
+<!--    <EditText-->
+<!--        android:id="@+id/selectuser"-->
+<!--        android:layout_width="match_parent"-->
+<!--        android:layout_height="wrap_content"-->
+<!--        android:hint="标题"></EditText>-->
+
+<!--    <Button-->
+<!--        android:id="@+id/buttondelete"-->
+<!--        android:layout_width="match_parent"-->
+<!--        android:layout_height="50dp"-->
+
+<!--        android:text="删除"></Button>-->
+
+
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/buttonadd"
+            android:layout_width="221dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+
+            android:text="添加"></Button>
+
+        <Button
+            android:id="@+id/buttondelete"
+            android:layout_width="213dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+
+            android:text="删除"></Button>
+
+
+
+    </LinearLayout>
+
+    <Button
+        android:id="@+id/buttonselect"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+
+        android:text="查询"></Button>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical">
+
+            <TextView
+                android:id="@+id/result"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text=""
+                android:textSize="13sp" />
+
+        </LinearLayout>
+
+    </ScrollView>
+
+</LinearLayout>
diff --git a/app/src/main/res/layout/collview.xml b/app/src/main/res/layout/collview.xml
deleted file mode 100644
index 0321482..0000000
--- a/app/src/main/res/layout/collview.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<?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=".first">
-
-    <TextView
-        android:id="@+id/five"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="我的收藏"
-        android:textColor="#663399"
-        android:textSize="25dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.321" />
-
-    <SearchView
-        android:layout_width="407dp"
-        android:layout_height="100dp"
-        tools:ignore="MissingConstraints"
-        tools:layout_editor_absoluteX="2dp"
-        tools:layout_editor_absoluteY="16dp" />
-</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/layout/firstview.xml b/app/src/main/res/layout/main_activity.xml
similarity index 98%
rename from app/src/main/res/layout/firstview.xml
rename to app/src/main/res/layout/main_activity.xml
index 64ed500..9eb9267 100644
--- a/app/src/main/res/layout/firstview.xml
+++ b/app/src/main/res/layout/main_activity.xml
@@ -5,7 +5,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".first">
+    tools:context=".MainActivity">
     <RelativeLayout
             android:layout_width="match_parent"
             android:layout_height="match_parent">
diff --git a/app/src/main/res/layout/fourview.xml b/app/src/main/res/layout/picture_search_activity.xml
similarity index 94%
rename from app/src/main/res/layout/fourview.xml
rename to app/src/main/res/layout/picture_search_activity.xml
index 31267bc..d55f118 100644
--- a/app/src/main/res/layout/fourview.xml
+++ b/app/src/main/res/layout/picture_search_activity.xml
@@ -5,7 +5,7 @@
               android:layout_width="match_parent"
               android:layout_height="match_parent"
               android:orientation="vertical"
-              tools:context=".four">
+              tools:context=".PictureSearchActivity">
 
     <Button
         android:id="@+id/btn_takephoto"
diff --git a/app/src/main/res/layout/activity_web_view.xml b/app/src/main/res/layout/web_view_activity.xml
similarity index 100%
rename from app/src/main/res/layout/activity_web_view.xml
rename to app/src/main/res/layout/web_view_activity.xml
diff --git a/app/src/main/res/layout/secondview.xml b/app/src/main/res/layout/word_search_activity.xml
similarity index 97%
rename from app/src/main/res/layout/secondview.xml
rename to app/src/main/res/layout/word_search_activity.xml
index 8e5054c..9fb008e 100644
--- a/app/src/main/res/layout/secondview.xml
+++ b/app/src/main/res/layout/word_search_activity.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".first">
+    tools:context=".MainActivity">
 
     <TextView
         android:id="@+id/five"