diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index feb0144..bed677e 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -28,7 +28,9 @@
         <service
             android:name=".ShellService"
             android:enabled="true"
-            android:exported="true" />
+            android:exported="false"
+            android:foregroundServiceType="dataSync" >
+        </service>
 
         <activity
             android:name=".MainActivity"
diff --git a/app/src/main/java/com/xypower/frpandroid/MainActivity.java b/app/src/main/java/com/xypower/frpandroid/MainActivity.java
index 6d148ba..2f2f734 100644
--- a/app/src/main/java/com/xypower/frpandroid/MainActivity.java
+++ b/app/src/main/java/com/xypower/frpandroid/MainActivity.java
@@ -198,7 +198,7 @@ public class MainActivity extends AppCompatActivity {
 
             logger.info("Server stopped");
             try {
-                MainActivity.this.stopShell();
+                stopShell();
             } catch (Exception ex) {
                 logger.warning(ex.getMessage());
             }
@@ -214,6 +214,7 @@ public class MainActivity extends AppCompatActivity {
 
     protected void onDestroy() {
         super.onDestroy();
+        //
     }
 
     private final void setListener() {
diff --git a/app/src/main/java/com/xypower/frpandroid/ShellService.java b/app/src/main/java/com/xypower/frpandroid/ShellService.java
index 36448af..a0244a6 100644
--- a/app/src/main/java/com/xypower/frpandroid/ShellService.java
+++ b/app/src/main/java/com/xypower/frpandroid/ShellService.java
@@ -13,7 +13,6 @@ import android.os.IBinder;
 import android.support.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Log;
-import android.widget.Toast;
 
 import java.io.File;
 import java.util.Random;
@@ -74,7 +73,6 @@ public class ShellService extends Service {
 
         if (this.mProcessThread != null) {
             Log.w("adx", "process isn't null,service won't start");
-            Toast.makeText((Context)this, (CharSequence)"process isn't null,service won't start", Toast.LENGTH_SHORT).show();
             return Service.START_NOT_STICKY;
         } else if (intent != null) {
             Bundle extras = intent.getExtras();
@@ -104,13 +102,13 @@ public class ShellService extends Service {
                     // Log.e("adx", ExceptionsKt.stackTraceToString((Throwable)var7));
                     logger.warning(ex.getMessage());
                     ex.printStackTrace();
-                    Toast.makeText((Context)this, (CharSequence)ex.getMessage(), Toast.LENGTH_SHORT).show();
+                    // Toast.makeText((Context)this, (CharSequence)ex.getMessage(), Toast.LENGTH_SHORT).show();
                     this.stopSelf();
                     return Service.START_NOT_STICKY;
                 }
 
                 logger.warning("Service has been started");
-                Toast.makeText((Context)this, (CharSequence)"已启动frp服务", Toast.LENGTH_SHORT).show();
+                // Toast.makeText((Context)this, (CharSequence)"已启动frp服务", Toast.LENGTH_SHORT).show();
                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                     this.startForeground(1, this.showNotification());
                 }
@@ -119,19 +117,23 @@ public class ShellService extends Service {
         } else {
             fileName = "Error:filename unknown!!!";
             Log.e("adx", fileName);
-            Toast.makeText((Context)this, (CharSequence)fileName, Toast.LENGTH_SHORT).show();
+            // Toast.makeText((Context)this, (CharSequence)fileName, Toast.LENGTH_SHORT).show();
             this.stopSelf();
             return Service.START_NOT_STICKY;
         }
     }
 
     public void onDestroy() {
-        if (mProcessThread != null) {
-            mProcessThread.interrupt();
-        }
+        try {
+            if (mProcessThread != null) {
+                mProcessThread.interrupt();
+            }
 
-        logger.warning("Service has been stopped");
-        Toast.makeText((Context)this, (CharSequence)"已关闭frp服务", Toast.LENGTH_SHORT).show();
+            logger.warning("Service has been stopped");
+            // Toast.makeText((Context)this, (CharSequence)"已关闭frp服务", Toast.LENGTH_SHORT).show();
+        } catch (Exception ex) {
+
+        }
     }
 
     private final void runCommand(String command, String[] envp, File dir) {