diff --git a/app/build.gradle b/app/build.gradle
index 46d6b40..2638f29 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -28,11 +28,11 @@ dependencies {
     implementation 'androidx.core:core-ktx:1.6.0'
     implementation 'androidx.appcompat:appcompat:1.3.1'
     implementation 'com.google.android.material:material:1.4.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     implementation 'org.webrtc:google-webrtc:1.0.32006'
-//    implementation 'com.github.shenbengit:WebRTCExtension:1.0.0'
+//    implementation 'com.github.shenbengit:WebRTCExtension:1.0.3'
     implementation project(path: ':extension-lib')
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/shencoder/webrtcextensiondemo/MainActivity.kt b/app/src/main/java/com/shencoder/webrtcextensiondemo/MainActivity.kt
index 6342eeb..b7c74b9 100644
--- a/app/src/main/java/com/shencoder/webrtcextensiondemo/MainActivity.kt
+++ b/app/src/main/java/com/shencoder/webrtcextensiondemo/MainActivity.kt
@@ -14,9 +14,7 @@ class MainActivity : AppCompatActivity() {
         val viewRenderer: CustomSurfaceViewRenderer = findViewById(R.id.viewRenderer)
         //是否垂直镜像
         viewRenderer.setMirrorVertically(false)
-        /**
-         * 旋转角度
-         */
+        //设置旋转角度：0°、90°、180°、270°
         viewRenderer.setRotationAngle(RotationAngle.ANGLE_0)
 
         WebRTCManager.getInstance().init(applicationContext)