diff --git a/app/src/main/java/org/ntlab/amaryllis/client/LockActivity.java b/app/src/main/java/org/ntlab/amaryllis/client/LockActivity.java
index 978f843..2bc588f 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/LockActivity.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/LockActivity.java
@@ -1,14 +1,84 @@
 package org.ntlab.amaryllis.client;
 
+import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AppCompatActivity;
 
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.media.RemoteControlClient;
+import android.os.Build;
 import android.os.Bundle;
+import android.os.IBinder;
+import android.view.TextureView;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.Button;
+import android.widget.TextView;
+
+import org.w3c.dom.Text;
 
 public class LockActivity extends AppCompatActivity {
+    boolean isPlaying;
+    Button playButton;
+    TextView textCount;
+    TextView textCount2;
+    RemoteControlClient remoteControlClient;
+    VoiceService binder;
+    private ServiceConnection conn=new ServiceConnection() {
+        @Override
+        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
 
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName componentName) {
+
+        }
+    };
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_lock);
+
+//        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|
+////                WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD|
+////                WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED|
+////                WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
+        textCount=findViewById(R.id.textView_count);
+        textCount2=findViewById(R.id.textView_count2);
+
+        playButton=findViewById(R.id.button_play);
+        playButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                switchPlaying();
+                playButton.setText(getPlayingState());
+                startBackgroundService(getApplicationContext());
+            }
+        });
+
+
+    }
+    public void startBackgroundService(final Context context){
+        final Thread thread = new Thread(){
+          @RequiresApi(api= Build.VERSION_CODES.O)
+          public  void run(){
+              Intent intentservice = new Intent(context, VoiceService.class);
+              context.startForegroundService(intentservice);
+
+          }
+        };
+    }
+    private void switchPlaying(){
+        isPlaying=isPlaying?false:true;
+    }
+
+    public void setPlaying(boolean playing) {
+        isPlaying = playing;
+    }
+    private String getPlayingState(){
+        return isPlaying?"Stop":"Play";
     }
 }
\ No newline at end of file