diff --git a/app/build.gradle b/app/build.gradle
index 192a82b..3954047 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,12 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 28
     defaultConfig {
         applicationId "com.warkiz.indicatorseekbar"
         minSdkVersion 24
-        targetSdkVersion 27
+        targetSdkVersion 28
         versionCode 3
         versionName "2.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -21,6 +20,6 @@ android {
 
 dependencies {
     implementation project(':indicatorseekbar')
-    implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support:design:27.1.1'
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'com.android.support:design:28.0.0'
 }
diff --git a/app/src/main/res/layout/discrete.xml b/app/src/main/res/layout/discrete.xml
index cad420f..3b03c67 100644
--- a/app/src/main/res/layout/discrete.xml
+++ b/app/src/main/res/layout/discrete.xml
@@ -222,6 +222,23 @@
             app:isb_tick_texts_array="@array/last_next_length_6"
             app:isb_ticks_count="6" />
 
+        <TextView
+            style="@style/subtitle_text_style"
+            android:text="12. Modifying sensitivity of seekbar, specially useful when the seekbar is inside a RecyclerView (longClick, longClickTime (in ms))" />
+
+        <com.warkiz.widget.IndicatorSeekBar
+            android:id="@+id/long_click_drawable"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="18dp"
+            app:isb_progress="40"
+            app:isb_show_tick_marks_type="oval"
+            app:isb_show_tick_texts="true"
+            app:isb_tick_texts_array="@array/last_next_length_6"
+            app:isb_ticks_count="6"
+            app:isb_longclick="true"
+            app:isb_longclick_time="500"/>
+
         <include layout="@layout/source_code_link" />
     </LinearLayout>
 
diff --git a/build.gradle b/build.gradle
index 614f3db..4a7a96a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,9 +6,9 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.0'
-        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
-        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
+        classpath 'com.android.tools.build:gradle:3.5.1'
+        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b9614d3..d2ae0b4 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
diff --git a/indicatorseekbar/build.gradle b/indicatorseekbar/build.gradle
index 0ad9288..1b78e5c 100644
--- a/indicatorseekbar/build.gradle
+++ b/indicatorseekbar/build.gradle
@@ -27,12 +27,11 @@ ext {
 }
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 28
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 27
+        targetSdkVersion 28
         versionCode 3
         versionName VERSION_NAME
     }
@@ -45,7 +44,7 @@ android {
 }
 
 dependencies {
-    compileOnly 'com.android.support:appcompat-v7:27.1.1'
+    compileOnly 'com.android.support:appcompat-v7:28.0.0'
 }
 
 
diff --git a/indicatorseekbar/src/main/java/com/warkiz/widget/Builder.java b/indicatorseekbar/src/main/java/com/warkiz/widget/Builder.java
index a95cb4b..6662182 100644
--- a/indicatorseekbar/src/main/java/com/warkiz/widget/Builder.java
+++ b/indicatorseekbar/src/main/java/com/warkiz/widget/Builder.java
@@ -39,6 +39,8 @@ public class Builder {
     boolean userSeekable = true;
     boolean onlyThumbDraggable = false;
     boolean clearPadding = false;
+    boolean longClick = false;
+    int longClickTime = 0;
     //indicator
     int showIndicatorType = IndicatorType.ROUNDED_RECTANGLE;
     int indicatorColor = Color.parseColor("#FF4081");
@@ -173,6 +175,28 @@ public Builder clearPadding(boolean clearPadding) {
         return this;
     }
 
+    /**
+     * seek bar will respond only on longClick
+     *
+     * @param longClick true to set longClick behaviour
+     * @return Builder
+     */
+    public Builder longClick(boolean longClick){
+        this.longClick = longClick;
+        return this;
+    }
+
+    /**
+     * seek bar will respond on longClick after a time expressed in ms
+     *
+     * @param longClickTime time (in ms) before to respond
+     * @return Builder
+     */
+    public Builder longClickTime(int longClickTime){
+        this.longClickTime = longClickTime;
+        return this;
+    }
+
     /**
      * prevent user from touching to seek or not
      *
diff --git a/indicatorseekbar/src/main/java/com/warkiz/widget/IndicatorSeekBar.java b/indicatorseekbar/src/main/java/com/warkiz/widget/IndicatorSeekBar.java
index 092bfea..d667b59 100644
--- a/indicatorseekbar/src/main/java/com/warkiz/widget/IndicatorSeekBar.java
+++ b/indicatorseekbar/src/main/java/com/warkiz/widget/IndicatorSeekBar.java
@@ -31,6 +31,7 @@
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.math.BigDecimal;
+import java.util.Date;
 
 /**
  * created by zhuangguangquan on 2017/9/1
@@ -51,7 +52,6 @@
  */
 
 public class IndicatorSeekBar extends View {
-    private static final int THUMB_MAX_WIDTH = 30;
     private static final String FORMAT_PROGRESS = "${PROGRESS}";
     private static final String FORMAT_TICK_TEXT = "${TICK_TEXT}";
     private Context mContext;
@@ -83,6 +83,10 @@ public class IndicatorSeekBar extends View {
     private boolean mSeekSmoothly;//seek continuously
     private float[] mProgressArr;//save the progress which at tickMark position.
     private boolean mR2L;//right to left,compat local problem.
+    private boolean mLongClick;//true if seekbar responds on longClick
+    private int mLongClickTime;//time (in ms) passed before responds onlongClick
+    private long startTime;
+    private long endTime;
     //tick texts
     private boolean mShowTickText;//the palace where the tick text show .
     private boolean mShowBothTickTextsOnly;//show the tick texts on the both ends of seek bar before.
@@ -201,6 +205,8 @@ private void initAttrs(Context context, AttributeSet attrs) {
         mOnlyThumbDraggable = ta.getBoolean(R.styleable.IndicatorSeekBar_isb_only_thumb_draggable, builder.onlyThumbDraggable);
         mSeekSmoothly = ta.getBoolean(R.styleable.IndicatorSeekBar_isb_seek_smoothly, builder.seekSmoothly);
         mR2L = ta.getBoolean(R.styleable.IndicatorSeekBar_isb_r2l, builder.r2l);
+        mLongClick = ta.getBoolean(R.styleable.IndicatorSeekBar_isb_longclick, builder.longClick);
+        mLongClickTime = ta.getInteger(R.styleable.IndicatorSeekBar_isb_longclick_time, builder.longClickTime);
         //track
         mBackgroundTrackSize = ta.getDimensionPixelSize(R.styleable.IndicatorSeekBar_isb_track_background_size, builder.trackBackgroundSize);
         mProgressTrackSize = ta.getDimensionPixelSize(R.styleable.IndicatorSeekBar_isb_track_progress_size, builder.trackProgressSize);
@@ -254,13 +260,13 @@ private void initParams() {
             mThumbRadius = mThumbSize / 2.0f;
             mThumbTouchRadius = mThumbRadius * 1.2f;
         } else {
-            mThumbRadius = Math.min(SizeUtils.dp2px(mContext, THUMB_MAX_WIDTH), mThumbSize) / 2.0f;
+            mThumbRadius = mThumbSize / 2.0f;
             mThumbTouchRadius = mThumbRadius;
         }
         if (mTickMarksDrawable == null) {
             mTickRadius = mTickMarksSize / 2.0f;
         } else {
-            mTickRadius = Math.min(SizeUtils.dp2px(mContext, THUMB_MAX_WIDTH), mTickMarksSize) / 2.0f;
+            mTickRadius = mTickMarksSize / 2.0f;
         }
         mCustomDrawableMaxHeight = Math.max(mThumbTouchRadius, mTickRadius) * 2.0f;
         initStrokePaint();
@@ -725,7 +731,7 @@ private Bitmap getDrawBitmap(Drawable drawable, boolean isThumb) {
         }
         int width;
         int height;
-        int maxRange = SizeUtils.dp2px(mContext, THUMB_MAX_WIDTH);
+        int maxRange = mThumbSize;
         int intrinsicWidth = drawable.getIntrinsicWidth();
         if (intrinsicWidth > maxRange) {
             if (isThumb) {
@@ -1214,18 +1220,43 @@ public boolean onTouchEvent(MotionEvent event) {
                     if (mSeekChangeListener != null) {
                         mSeekChangeListener.onStartTrackingTouch(this);
                     }
-                    refreshSeekBar(event);
+                    if(!mLongClick) {
+                        refreshSeekBar(event);
+                    }
+                    else{
+                        startTime = event.getEventTime();
+                    }
                     return true;
                 }
                 break;
             case MotionEvent.ACTION_MOVE:
-                refreshSeekBar(event);
+                if(mLongClick) {
+                    endTime = event.getEventTime();
+                    if (endTime - startTime > mLongClickTime) {
+                        refreshSeekBar(event);
+                    }
+                }
+                else{
+                    refreshSeekBar(event);
+                }
                 break;
             case MotionEvent.ACTION_UP:
             case MotionEvent.ACTION_CANCEL:
                 mIsTouching = false;
-                if (mSeekChangeListener != null) {
-                    mSeekChangeListener.onStopTrackingTouch(this);
+
+                if(mLongClick) {
+                    endTime = event.getEventTime();
+                    if (endTime - startTime > mLongClickTime) {
+                        refreshSeekBar(event);
+                        if (mSeekChangeListener != null) {
+                            mSeekChangeListener.onStopTrackingTouch(this);
+                        }
+                    }
+                }
+                else{
+                    if (mSeekChangeListener != null) {
+                        mSeekChangeListener.onStopTrackingTouch(this);
+                    }
                 }
                 if (!autoAdjustThumb()) {
                     invalidate();
@@ -1703,7 +1734,7 @@ public void setThumbDrawable(Drawable drawable) {
             this.mPressedThumbBitmap = null;
         } else {
             this.mThumbDrawable = drawable;
-            this.mThumbRadius = Math.min(SizeUtils.dp2px(mContext, THUMB_MAX_WIDTH), mThumbSize) / 2.0f;
+            this.mThumbRadius = mThumbSize / 2.0f;
             this.mThumbTouchRadius = mThumbRadius;
             this.mCustomDrawableMaxHeight = Math.max(mThumbTouchRadius, mTickRadius) * 2.0f;
             initThumbBitmap();
@@ -1773,7 +1804,7 @@ public void setTickMarksDrawable(Drawable drawable) {
             this.mSelectTickMarksBitmap = null;
         } else {
             this.mTickMarksDrawable = drawable;
-            this.mTickRadius = Math.min(SizeUtils.dp2px(mContext, THUMB_MAX_WIDTH), mTickMarksSize) / 2.0f;
+            this.mTickRadius = mTickMarksSize / 2.0f;
             this.mCustomDrawableMaxHeight = Math.max(mThumbTouchRadius, mTickRadius) * 2.0f;
             initTickMarksBitmap();
         }
diff --git a/indicatorseekbar/src/main/res/values/attr.xml b/indicatorseekbar/src/main/res/values/attr.xml
index a15081a..26d13e7 100644
--- a/indicatorseekbar/src/main/res/values/attr.xml
+++ b/indicatorseekbar/src/main/res/values/attr.xml
@@ -12,6 +12,8 @@
         <attr name="isb_user_seekable" format="boolean" /><!--prevent user from seeking,only can be change thumb location by setProgress(), default false-->
         <attr name="isb_clear_default_padding" format="boolean" /><!-- set seekBar's leftPadding&rightPadding to zero, default false, default padding is 16dp-->
         <attr name="isb_only_thumb_draggable" format="boolean" /><!--user change the thumb's location by touching thumb/touching track,true for touching track to seek. false for touching thumb; default false-->
+        <attr name="isb_longclick" format="boolean" />
+        <attr name="isb_longclick_time" format="integer" />
         //indicator
         <attr name="isb_show_indicator"><!-- the type of indicator, default rectangle_rounded_corner/0.-->
             <enum name="none" value="0" />