diff --git a/app/src/main/java/cn/lliiooll/gmc/BotService.java b/app/src/main/java/cn/lliiooll/gmc/BotService.java
index f681b21..ddb307e 100644
--- a/app/src/main/java/cn/lliiooll/gmc/BotService.java
+++ b/app/src/main/java/cn/lliiooll/gmc/BotService.java
@@ -14,6 +14,9 @@
 import net.lz1998.gomiraiclient.MainActivity;
 import org.jetbrains.annotations.NotNull;
 
+/**
+ * 用来运行gmc的服务
+ */
 import java.io.File;
 
 public class BotService extends Service {
@@ -21,14 +24,15 @@ public class BotService extends Service {
 
     @Override
     public void onCreate() {
+        Toast.makeText(this, "GMC启动中...", Toast.LENGTH_LONG).show();// 发个通知别让用户以为程序卡了
         Gmc_android.setPluginPath(new File(getFilesDir(),"plugins").getAbsolutePath());
         Gmc_android.setLogger(s -> {
             // TODO print log on screen
         });
-        new Thread(Gmc_android::start).start();
+        new Thread(Gmc_android::start).start();// 新建线程启动gmc
         Toast.makeText(this, "Start Service", Toast.LENGTH_SHORT).show();
         active = true;
-        startForeground(1, NotificationUtil.create(this));
+        startForeground(1, NotificationUtil.create(this));// 启动前台服务
         super.onCreate();
     }
 
@@ -46,7 +50,7 @@ public int onStartCommand(Intent intent, int flags, int startId) {
     @Override
     public void onDestroy() {
         active = false;
-        stopForeground(true);
+        stopForeground(true);// 停止前台服务
         super.onDestroy();
     }
 
diff --git a/app/src/main/java/cn/lliiooll/gmc/util/NotificationUtil.java b/app/src/main/java/cn/lliiooll/gmc/util/NotificationUtil.java
index dd9accc..48a99a1 100644
--- a/app/src/main/java/cn/lliiooll/gmc/util/NotificationUtil.java
+++ b/app/src/main/java/cn/lliiooll/gmc/util/NotificationUtil.java
@@ -4,17 +4,22 @@
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
-import android.content.Context;
 import android.content.Intent;
-import android.graphics.Color;
 import android.os.Build;
 import androidx.core.app.NotificationCompat;
-import androidx.core.app.NotificationManagerCompat;
 import cn.lliiooll.gmc.BotService;
-import net.lz1998.gomiraiclient.MainActivity;
 import net.lz1998.gomiraiclient.R;
 
+/**
+ * 通知工具类
+ */
 public class NotificationUtil {
+
+    /**
+     * 创建一个用于挂前台服务的通知
+     * @param service 服务
+     * @return 通知
+     */
     public static Notification create(BotService service) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             CharSequence name = "GMC";
diff --git a/app/src/main/java/cn/lliiooll/gmc/util/PermissionUtil.java b/app/src/main/java/cn/lliiooll/gmc/util/PermissionUtil.java
index 749f12c..134bd50 100644
--- a/app/src/main/java/cn/lliiooll/gmc/util/PermissionUtil.java
+++ b/app/src/main/java/cn/lliiooll/gmc/util/PermissionUtil.java
@@ -6,10 +6,15 @@
 import android.os.Build;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
-import net.lz1998.gomiraiclient.MainActivity;
 import org.jetbrains.annotations.NotNull;
 
+/**
+ * 权限类
+ */
 public class PermissionUtil {
+    /**
+     * 所有程序用到的权限
+     */
     private static final String[] permissions = new String[]{
             Manifest.permission.MANAGE_EXTERNAL_STORAGE,
             Manifest.permission.READ_EXTERNAL_STORAGE,
@@ -17,8 +22,16 @@ public class PermissionUtil {
             Manifest.permission.FOREGROUND_SERVICE,
             Manifest.permission.INTERNET,
     };
+    /**
+     * 权限请求id
+     */
     private static final int requestCode = 0x9081;
 
+    /**
+     * 检查程序是否有需要的权限
+     * @param activity 界面
+     * @return 是否拥有全部权限
+     */
     @NotNull
     public static boolean checkAll(Activity activity) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
@@ -33,10 +46,19 @@ public static boolean checkAll(Activity activity) {
         return true;
     }
 
+    /**
+     * 请求权限
+     * @param activity 界面
+     */
     public static void request(Activity activity) {
         ActivityCompat.requestPermissions(activity, permissions, requestCode);
     }
 
+    /**
+     * 判断是不是程序的requestCode
+     * @param requestCode
+     * @return
+     */
     public static boolean isSelfRequest(int requestCode) {
         return requestCode == PermissionUtil.requestCode;
     }
diff --git a/app/src/main/java/net/lz1998/gomiraiclient/MainActivity.kt b/app/src/main/java/net/lz1998/gomiraiclient/MainActivity.kt
index c45a455..f313a3d 100644
--- a/app/src/main/java/net/lz1998/gomiraiclient/MainActivity.kt
+++ b/app/src/main/java/net/lz1998/gomiraiclient/MainActivity.kt
@@ -24,13 +24,12 @@ class MainActivity : AppCompatActivity() {
         }
         // 启动服务
         if (!BotService.isActive()) {
-            Toast.makeText(this, "Start", Toast.LENGTH_SHORT).show();
             BotService.start(this)
         }
         val t = this;
         thread {
-            Thread.sleep(3000L)
-            t.runOnUiThread {
+            Thread.sleep(3000L)// 等3秒让gmc启动
+            t.runOnUiThread {// UI线程更新界面
                 binding.webview.settings.javaScriptEnabled = true
                 binding.webview.settings.loadWithOverviewMode = true
                 binding.webview.webViewClient = object : WebViewClient() {
@@ -53,14 +52,12 @@ class MainActivity : AppCompatActivity() {
             ) {
                 // Permission is granted. Continue the action or workflow
                 // in your app.
-                Toast.makeText(this, "权限通过", Toast.LENGTH_LONG).show()
             } else {
                 // Explain to the user that the feature is unavailable because
                 // the features requires a permission that the user has denied.
                 // At the same time, respect the user's decision. Don't link to
                 // system settings in an effort to convince the user to change
                 // their decision.
-                Toast.makeText(this, "权限不通过", Toast.LENGTH_LONG).show()
             }