diff --git a/app/src/main/java/com/c202101020117/Action/Action3.java b/app/src/main/java/com/c202101020117/Action/Action3.java
index 3bbd157..5ac974f 100644
--- a/app/src/main/java/com/c202101020117/Action/Action3.java
+++ b/app/src/main/java/com/c202101020117/Action/Action3.java
@@ -2,15 +2,27 @@ package com.c202101020117.Action;
 
 import androidx.appcompat.app.AppCompatActivity;
 
+import android.app.Activity;
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.EditText;
 import android.widget.TextView;
+import android.widget.Toast;
 
+import com.c202101020117.AppConctroller;
+import com.c202101020117.Login;
 import com.c202101020117.R;
+import com.c202101020117.package1.DrugInfo;
+import com.c202101020117.package1.RYApi;
+import com.c202101020117.package1.Result;
 import com.gyf.immersionbar.ImmersionBar;
 
+import retrofit2.Call;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+
 
 public class Action3 extends AppCompatActivity {
 
@@ -27,6 +39,9 @@ public class Action3 extends AppCompatActivity {
         setContentView(R.layout.activity_action3);
         ImmersionBar.with(this).init();
 
+        //添加Activity到容器中
+        AppConctroller.addActivity(this);
+
         back = findViewById(R.id.textView33);
         text1 = findViewById(R.id.editTextText30);
         text2 = findViewById(R.id.editTextText32);
@@ -55,7 +70,62 @@ public class Action3 extends AppCompatActivity {
         confirm.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
+                DrugInfo drugInfo = new DrugInfo();
+                int id = sharedPreferences.getInt("id", 0);
+                String dno = text1.getText() + "";
+                String MFD = text2.getText() + "";
+                String EXP = text3.getText() + "";
+                int Quantity = Integer.parseInt(text4.getText() + "");
 
+                drugInfo.id = id;
+                drugInfo.dno = dno;
+                drugInfo.MFD = MFD;
+                drugInfo.EXP = EXP;
+                drugInfo.quantity = Quantity;
+
+                SharedPreferences sharedPreferences = getSharedPreferences("user", Activity.MODE_PRIVATE);
+                String token = sharedPreferences.getString("token", null);
+
+                //获取数据
+                Retrofit retrofit = new Retrofit.Builder()
+                        .baseUrl("http://10.138.63.204:8080/")
+                        .addConverterFactory(GsonConverterFactory.create())     //返回结果用Gson解析
+                        .build();
+                RYApi api = retrofit.create(RYApi.class);
+
+                Call<Result> updateDrugCall = api.updateDrug("Bearer " + token, drugInfo);
+                updateDrugCall.enqueue(new retrofit2.Callback<Result>() {
+                    @Override
+                    public void onResponse(Call<Result> call, retrofit2.Response<Result> response) {
+                        Result result = response.body();
+                        if (result.code == 200) {
+                            Toast.makeText(Action3.this, "修改成功", Toast.LENGTH_LONG).show();
+                            Intent intent = new Intent(Action3.this, Action6.class);
+                            startActivity(intent);
+                        }else{
+                            Toast.makeText(Action3.this, "修改失败", Toast.LENGTH_LONG).show();
+                        }
+                        if (result.code == 401){
+                            Toast.makeText(Action3.this, "请重新登录", Toast.LENGTH_LONG).show();
+                            Intent intent = new Intent(Action3.this, Login.class);
+                            startActivity(intent);
+                            AppConctroller.exit();
+                        }
+                    }
+
+                    @Override
+                    public void onFailure(Call<Result> call, Throwable t) {
+
+                    }
+                });
+            }
+        });
+
+        back.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                AppConctroller.removeActivity(Action3.this);
+                finish();
             }
         });
     }
diff --git a/app/src/main/java/com/c202101020117/Fragment/HomeFragment.java b/app/src/main/java/com/c202101020117/Fragment/HomeFragment.java
index 1621980..2cd61f9 100644
--- a/app/src/main/java/com/c202101020117/Fragment/HomeFragment.java
+++ b/app/src/main/java/com/c202101020117/Fragment/HomeFragment.java
@@ -11,7 +11,9 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
+import android.widget.Toast;
 
+import com.c202101020117.AppConctroller;
 import com.c202101020117.Login;
 import com.c202101020117.R;
 import com.c202101020117.package1.RYApi;
@@ -56,6 +58,12 @@ public class HomeFragment extends Fragment {
                         nickNameTV.setText("用户名：" + userInfoResult.user.nickName);
                         phonenumberTv.setText("手机号：" + userInfoResult.user.phonenumber);
                     }
+                    if(userInfoResult.code == 401){
+                        Toast.makeText(getActivity(), "登录过期，请重新登录", Toast.LENGTH_SHORT).show();
+                        Intent intent = new Intent(getActivity(), Login.class);
+                        startActivity(intent);
+                        getActivity().finish();
+                    }
                 }
             }
 
diff --git a/app/src/main/java/com/c202101020117/package1/Api.java b/app/src/main/java/com/c202101020117/package1/Api.java
index e2541fa..d0f9849 100644
--- a/app/src/main/java/com/c202101020117/package1/Api.java
+++ b/app/src/main/java/com/c202101020117/package1/Api.java
@@ -3,6 +3,7 @@ package com.c202101020117.package1;
 import retrofit2.Call;
 import retrofit2.http.GET;
 import retrofit2.http.POST;
+import retrofit2.http.PUT;
 import retrofit2.http.Query;
 
 //定义网络请求的方法
diff --git a/app/src/main/java/com/c202101020117/package1/RYApi.java b/app/src/main/java/com/c202101020117/package1/RYApi.java
index 0283d04..a125597 100644
--- a/app/src/main/java/com/c202101020117/package1/RYApi.java
+++ b/app/src/main/java/com/c202101020117/package1/RYApi.java
@@ -45,6 +45,10 @@ public interface RYApi {
     @GET("/system/adrug/expiringlist")
     Call<Drug2ListResult> getExpiringDrugList(@Header("Authorization") String token);
 
+    //http://127.0.0.1:8080/system/quantity
+    @PUT("/system/quantity")
+    Call<Result> updateDrug(@Header("Authorization") String token, @Body DrugInfo drugInfo);
+
     //http://127.0.0.1:8080/system/quantity
     @POST("/system/quantity")
     Call<Result> addDrug(@Header("Authorization") String token, @Body DrugInfo drugInfo);