Library: add effect for delete button

Author: phongbm

pinlockview/build.gradle

@@ -32,7 +32,7 @@ android {
         minSdkVersion 21
         targetSdkVersion 29
         versionCode 6
-        versionName "2.1.1"
+        versionName "2.1.2"
     }
     buildTypes {
         release {

pinlockview/src/main/res/layout/layout_delete_item.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:clipChildren="false"
@@ -11,15 +12,19 @@
         android:id="@+id/button"
         android:layout_width="64dp"
         android:layout_height="64dp"
+        android:background="?attr/actionBarItemBackground"
         android:clickable="true"
-        android:gravity="center">
+        android:focusable="true"
+        android:gravity="center"
+        tools:ignore="UselessParent">
 
         <ImageView
             android:id="@+id/buttonImage"
             android:layout_width="@dimen/default_delete_button_size"
             android:layout_height="@dimen/default_delete_button_size"
             android:adjustViewBounds="true"
             android:clickable="false"
+            android:contentDescription="@null"
             android:focusable="false"
             android:scaleType="fitCenter"
             android:src="@drawable/ic_backspace" />