Fixing small gotchas

app/build.gradle

@@ -5,7 +5,7 @@ android {
     defaultConfig {
         applicationId "space.neothefox.laytray"
         minSdkVersion 23
-        targetSdkVersion 26
+        targetSdkVersion 27
         versionCode 9
         versionName "1.8"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

app/src/main/java/space/neothefox/laytray/VerticalSeekBar.java

@@ -1,5 +1,6 @@
 package space.neothefox.laytray;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Canvas;
 import android.support.v7.widget.AppCompatSeekBar;
@@ -44,6 +45,7 @@ public class VerticalSeekBar extends AppCompatSeekBar
         super.onDraw(c);
     }
 
+    @SuppressLint("ClickableViewAccessibility")
     @Override
     public boolean onTouchEvent(MotionEvent event)
     {

app/src/main/res/layout/activity_about.xml

@@ -8,6 +8,7 @@
 
     <ImageView
         android:id="@+id/imageView"
+        android:contentDescription="@string/title_icon_channel"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginEnd="138dp"