chore: clean up legacy files and update IDE configurations

- Remove old Kotlin DSL build files (build.gradle.kts, settings.gradle.kts)
- Delete legacy MainActivity.java in root package
- Update AndroidManifest.xml for proper configuration
- Add Chinese localization strings
- Update IDE configuration files for better compatibility

Cleanup after MVVM migration to ensure project consistency.

.idea/compiler.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="21" />
+    <bytecodeTargetLevel target="17" />
   </component>
 </project>

.idea/gradle.xml

@@ -6,7 +6,7 @@
       <GradleProjectSettings>
         <option name="testRunner" value="CHOOSE_PER_TEST" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="gradleJvm" value="corretto-17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />

.idea/misc.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectInspectionProfilesVisibleTreeState">
@@ -34,7 +35,7 @@
       </profile-state>
     </entry>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/build.gradle

@@ -0,0 +1,48 @@
+plugins {
+    alias(libs.plugins.android.application)
+}
+
+android {
+    namespace 'com.example.mobile_pda'
+    compileSdk 36
+
+    defaultConfig {
+        applicationId "com.example.mobile_pda"
+        minSdk 26
+        targetSdk 36
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+dependencies {
+    implementation libs.appcompat
+    implementation libs.material
+    implementation libs.activity
+    implementation libs.constraintlayout
+    
+    // Lifecycle components
+    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.7.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata:2.7.0'
+
+    testImplementation libs.junit
+    androidTestImplementation libs.ext.junit
+    androidTestImplementation libs.espresso.core
+}

app/build.gradle.kts

@@ -1,44 +0,0 @@
-plugins {
-    alias(libs.plugins.android.application)
-}
-
-android {
-    namespace = "com.example.mobile_pda"
-    compileSdk {
-        version = release(36)
-    }
-
-    defaultConfig {
-        applicationId = "com.example.mobile_pda"
-        minSdk = 26
-        targetSdk = 36
-        versionCode = 1
-        versionName = "1.0"
-
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        release {
-            isMinifyEnabled = false
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
-        }
-    }
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
-    }
-}
-
-dependencies {
-    implementation(libs.appcompat)
-    implementation(libs.material)
-    implementation(libs.activity)
-    implementation(libs.constraintlayout)
-    testImplementation(libs.junit)
-    androidTestImplementation(libs.ext.junit)
-    androidTestImplementation(libs.espresso.core)
-}

app/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Mobile_PDA">
         <activity
-            android:name=".MainActivity"
+            android:name=".ui.main.MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/example/mobile_pda/MainActivity.java

@@ -1,78 +0,0 @@
-package com.example.mobile_pda;
-
-import android.os.Bundle;
-import android.widget.Button;
-import android.widget.EditText;
-import android.widget.ImageButton;
-import android.widget.TextView;
-import android.widget.Toast;
-
-import androidx.activity.EdgeToEdge;
-import androidx.appcompat.app.AppCompatActivity;
-
-public class MainActivity extends AppCompatActivity {
-
-    // 顶部按钮组件 -->开始、暂停、主页图标
-    private Button btnStartHeader, btnPauseHeader;
-    private ImageButton btnHome;
-
-    // 表单输入组件 --> 资源、产品条码、工单等数据项
-    private EditText etResource, etProductBarcode, etWorkOrder, etOpStep, etWorkNum, etProcess, etStatus, etWorkshop, etStartTime, etEndTime;
-
-    // SFC(生产控制) 区域按钮 --> 移除选项、移除全部
-    private TextView btnRemoveSelected, btnRemoveAll;
-
-    // 底部操作区按钮 --> 互检、开始、刀具、辅料、异常、装配、自检、首检、完成
-    private Button btnActionHujian, btnActionStart, btnActionTool, btnActionAux;
-    private Button btnActionException, btnActionAssemble, btnActionSelfCheck, btnActionFirstCheck, btnActionFinish;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        EdgeToEdge.enable(this);
-        // 启用全屏显示，适配系统栏（状态栏/导航栏）宽度占位
-        setContentView(R.layout.activity_main);
-        
-        initViews();
-        setupListeners();
-    }
-
-    private void initViews() {
-        // 顶部导航栏初始化
-        btnStartHeader = findViewById(R.id.btn_start_header);
-        btnPauseHeader = findViewById(R.id.btn_pause_header);
-        btnHome = findViewById(R.id.btn_home);
-
-        // 核心表单区域初始化
-        etResource = findViewById(R.id.et_resource);
-        etProductBarcode = findViewById(R.id.et_product_barcode);
-        etWorkOrder = findViewById(R.id.et_work_order);
-        etOpStep = findViewById(R.id.et_op_step);
-        etWorkNum = findViewById(R.id.et_work_num);
-        etProcess = findViewById(R.id.et_process);
-        etStatus = findViewById(R.id.et_status);
-        etWorkshop = findViewById(R.id.et_workshop);
-        etStartTime = findViewById(R.id.et_start_time);
-        etEndTime = findViewById(R.id.et_end_time);
-
-        // SFC 列表区域初始化
-        btnRemoveSelected = findViewById(R.id.btn_remove_selected);
-        btnRemoveAll = findViewById(R.id.btn_remove_all);
-
-        // 底部快捷操作按钮初始化
-        btnActionHujian = findViewById(R.id.btn_action_hujian);
-        btnActionStart = findViewById(R.id.btn_action_start);
-        btnActionTool = findViewById(R.id.btn_action_tool);
-        btnActionAux = findViewById(R.id.btn_action_aux);
-        btnActionException = findViewById(R.id.btn_action_exception);
-        btnActionAssemble = findViewById(R.id.btn_action_assemble);
-        btnActionSelfCheck = findViewById(R.id.btn_action_self_check);
-        btnActionFirstCheck = findViewById(R.id.btn_action_first_check);
-        btnActionFinish = findViewById(R.id.btn_action_finish);
-    }
-
-    private void setupListeners() {
-        btnActionStart.setOnClickListener(v -> Toast.makeText(this, "Start Clicked", Toast.LENGTH_SHORT).show());
-        btnActionFinish.setOnClickListener(v -> Toast.makeText(this, "Finish Clicked", Toast.LENGTH_SHORT).show());
-    }
-}

app/src/main/java/com/example/mobile_pda/ui/main/MainActivity.java

@@ -0,0 +1,67 @@
+package com.example.mobile_pda.ui.main;
+
+import android.os.Bundle;
+import android.widget.Toast;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.example.mobile_pda.R;
+import com.example.mobile_pda.databinding.ActivityMainBinding;
+
+public class MainActivity extends AppCompatActivity {
+
+    private ActivityMainBinding binding;
+    private MainViewModel viewModel;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        
+        //  使用 ViewBinding 极简初始化，淘汰 findViewById
+        binding = ActivityMainBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        //  初始化 ViewModel，状态隔离
+        viewModel = new ViewModelProvider(this).get(MainViewModel.class);
+        
+        setupObservers();
+        setupListeners();
+    }
+
+    private void setupObservers() {
+        // 观察运行状态的变化
+        viewModel.getIsRunning().observe(this, isRunning -> {
+            if (isRunning) {
+                // UI状态随着数据改变（只是模拟示例）
+                binding.btnStartHeader.setEnabled(false);
+                binding.btnPauseHeader.setEnabled(true);
+            } else {
+                binding.btnStartHeader.setEnabled(true);
+                binding.btnPauseHeader.setEnabled(false);
+            }
+        });
+    }
+
+    private void setupListeners() {
+        // 使用 Binding 直接访问控件
+        binding.btnActionStart.setOnClickListener(v -> {
+            Toast.makeText(this, getString(R.string.toast_start_clicked), Toast.LENGTH_SHORT).show();
+            viewModel.startOperation();
+        });
+        
+        binding.btnActionFinish.setOnClickListener(v -> {
+            Toast.makeText(this, getString(R.string.toast_finish_clicked), Toast.LENGTH_SHORT).show();
+            viewModel.finishOperation();
+        });
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        // 清理 binding 引用防止内存泄漏
+        binding = null;
+    }
+}

app/src/main/java/com/example/mobile_pda/ui/main/MainViewModel.java

@@ -0,0 +1,23 @@
+package com.example.mobile_pda.ui.main;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class MainViewModel extends ViewModel {
+    
+    // 模拟的业务运行状态，LiveData实现生命周期感知
+    private final MutableLiveData<Boolean> isRunning = new MutableLiveData<>(false);
+    
+    public LiveData<Boolean> getIsRunning() {
+        return isRunning;
+    }
+
+    public void startOperation() {
+        isRunning.setValue(true);
+    }
+
+    public void finishOperation() {
+        isRunning.setValue(false);
+    }
+}

app/src/main/res/values/strings.xml

@@ -1,3 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Mobile_PDA</string>
+    <string name="toast_start_clicked">开始被点击</string>
+    <string name="toast_finish_clicked">完成被点击</string>
 </resources>

settings.gradle

@@ -20,5 +20,4 @@ dependencyResolutionManagement {
 }
 
 rootProject.name = "Mobile_PDA"
-include(":app")
+include ':app'
-