diff --git a/build.gradle b/build.gradle
index 7909bc8..ad8c550 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
     google()
   }
   dependencies {
-    classpath 'com.android.tools.build:gradle:3.1.4'
+    classpath 'com.android.tools.build:gradle:3.5.3'
     classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
     classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
     classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 5db3f70..87a842a 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-5.4.1-all.zip
diff --git a/simplecropview-sample/src/main/res/layout/fragment_basic.xml b/simplecropview-sample/src/main/res/layout/fragment_basic.xml
index a55d7e5..1f5f794 100644
--- a/simplecropview-sample/src/main/res/layout/fragment_basic.xml
+++ b/simplecropview-sample/src/main/res/layout/fragment_basic.xml
@@ -17,15 +17,17 @@
       custom:scv_frame_color="@color/colorAccent"
       custom:scv_frame_stroke_weight="1dp"
       custom:scv_guide_color="@color/colorAccent"
-      custom:scv_guide_show_mode="show_always"
+      custom:scv_guide_show_mode="show_on_touch"
       custom:scv_guide_stroke_weight="1dp"
       custom:scv_handle_color="@color/colorAccent"
       custom:scv_handle_show_mode="show_always"
-      custom:scv_handle_size="14dp"
+      custom:scv_handle_size="6dp"
       custom:scv_min_frame_size="50dp"
       custom:scv_overlay_color="@color/overlay"
       custom:scv_touch_padding="8dp"
-      />
+      custom:scv_handle_stroke_size = "5dp"
+      custom:scv_handle_stroke_color = "#fd5c02"
+      custom:scv_frame_side_dragging_enabled = "false"/>
 
   <View
       android:layout_width="match_parent"
diff --git a/simplecropview/build.gradle b/simplecropview/build.gradle
index 5d0ad04..36c63e8 100644
--- a/simplecropview/build.gradle
+++ b/simplecropview/build.gradle
@@ -15,7 +15,7 @@ android {
     minSdkVersion 14
     targetSdkVersion 28
     versionCode 26
-    versionName "1.1.8"
+    versionName "1.0.0"
     consumerProguardFiles 'proguard-rules.pro'
   }
 
@@ -24,87 +24,113 @@ android {
   }
 }
 
-def file = project.rootProject.file('local.properties')
-if (!file.exists()) return
+apply plugin: 'maven'
 
-apply plugin: 'com.github.dcendents.android-maven'
-apply plugin: 'com.jfrog.bintray'
+def MAVEN_SERVER_URL = 'http://maven.ysbang.cn:8081/repository/maven-android/'
+def ARTIFACT_ID = 'simplecropview'
+def VERSION_NAME = '1.0.0'
+def GROUP_ID = 'com.ysbang'
+def MAVEN_SERVER_ACCOUNT = 'androiduser'
+def MAVEN_SERVER_PWD = 'android123'
 
-group = 'com.isseiaoki'
-version = '1.1.8'
-def siteUrl = 'https://github.com/IsseiAoki/SimpleCropView'
-def gitUrl = 'https://github.com/IsseiAoki/SimpleCropView.git'
-Properties properties = new Properties()
-properties.load(project.rootProject.file('local.properties').newDataInputStream())
+uploadArchives {
 
-bintray {
+  repositories {
 
-  user = properties.getProperty("bintray.user")
-  key = properties.getProperty("bintray.apikey")
-
-  configurations = ['archives'] //When uploading configuration files
-  pkg {
-    repo = 'maven'
-    name = 'SimpleCropView'
-    desc = 'A simple image cropping library for Android.'
-    websiteUrl = siteUrl
-    issueTrackerUrl = 'https://github.com/IsseiAoki/SimpleCropView/issues'
-    vcsUrl = gitUrl
-    licenses = ['MIT']
-    labels = ['android']
-    publicDownloadNumbers = true
-  }
-}
+    mavenDeployer {
+      repository(url:MAVEN_SERVER_URL) {
+        authentication(userName:MAVEN_SERVER_ACCOUNT, password:MAVEN_SERVER_PWD)
+      }
 
-install {
-  repositories.mavenInstaller {
-    pom {
-      project {
+      pom.project {
+        groupId GROUP_ID
+        artifactId ARTIFACT_ID
+        version VERSION_NAME
         packaging 'aar'
-        name 'SimpleCropView'
-        url siteUrl
-        licenses {
-          license {
-            name 'The MIT License (MIT)'
-            url 'http://opensource.org/licenses/MIT'
-          }
-        }
-        developers {
-          developer {
-            id 'isseiaoki'
-            name 'Issei Aoki'
-            email 'i.greenwood.dev@gmail.com'
-          }
-        }
-        scm {
-          connection 'https://github.com/IsseiAoki/SimpleCropView.git'
-          developerConnection 'https://github.com/IsseiAoki/SimpleCropView.git'
-          url siteUrl
-        }
       }
     }
   }
 }
 
-task sourcesJar(type: Jar) {
-  from android.sourceSets.main.java.srcDirs
-  classifier = 'sources'
-}
-
-task javadoc(type: Javadoc) {
-  source = android.sourceSets.main.java.srcDirs
-  classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
-}
-
-task javadocJar(type: Jar, dependsOn: javadoc) {
-  classifier = 'javadoc'
-  from javadoc.destinationDir
-}
-artifacts {
-  archives javadocJar
-  archives sourcesJar
-}
-
-task findConventions << {
-  println project.getConvention()
-}
+//def file = project.rootProject.file('local.properties')
+//if (!file.exists()) return
+//
+//apply plugin: 'com.github.dcendents.android-maven'
+//apply plugin: 'com.jfrog.bintray'
+//
+//group = 'com.isseiaoki'
+//version = '1.1.9'
+//def siteUrl = 'https://github.com/IsseiAoki/SimpleCropView'
+//def gitUrl = 'https://github.com/IsseiAoki/SimpleCropView.git'
+//Properties properties = new Properties()
+//properties.load(project.rootProject.file('local.properties').newDataInputStream())
+//
+//bintray {
+//
+//  user = properties.getProperty("bintray.user")
+//  key = properties.getProperty("bintray.apikey")
+//
+//  configurations = ['archives'] //When uploading configuration files
+//  pkg {
+//    repo = 'maven'
+//    name = 'SimpleCropView'
+//    desc = 'A simple image cropping library for Android.'
+//    websiteUrl = siteUrl
+//    issueTrackerUrl = 'https://github.com/IsseiAoki/SimpleCropView/issues'
+//    vcsUrl = gitUrl
+//    licenses = ['MIT']
+//    labels = ['android']
+//    publicDownloadNumbers = true
+//  }
+//}
+//
+//install {
+//  repositories.mavenInstaller {
+//    pom {
+//      project {
+//        packaging 'aar'
+//        name 'SimpleCropView'
+//        url siteUrl
+//        licenses {
+//          license {
+//            name 'The MIT License (MIT)'
+//            url 'http://opensource.org/licenses/MIT'
+//          }
+//        }
+//        developers {
+//          developer {
+//            id 'isseiaoki'
+//            name 'Issei Aoki'
+//            email 'i.greenwood.dev@gmail.com'
+//          }
+//        }
+//        scm {
+//          connection 'https://github.com/IsseiAoki/SimpleCropView.git'
+//          developerConnection 'https://github.com/IsseiAoki/SimpleCropView.git'
+//          url siteUrl
+//        }
+//      }
+//    }
+//  }
+//}
+
+//task sourcesJar(type: Jar) {
+//  from android.sourceSets.main.java.srcDirs
+//  classifier = 'sources'
+//}
+//
+//task javadoc(type: Javadoc) {
+//  source = android.sourceSets.main.java.srcDirs
+//  classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
+//}
+//
+//task javadocJar(type: Jar, dependsOn: javadoc) {
+//  classifier = 'javadoc'
+//  from javadoc.destinationDir
+//}
+//artifacts {
+//  archives javadocJar
+//  archives sourcesJar
+//}
+
+//t
diff --git a/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java b/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java
index b515aa7..74b679e 100644
--- a/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java
+++ b/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java
@@ -143,6 +143,9 @@
   private boolean mIsAnimationEnabled = true;
   private int mAnimationDurationMillis = DEFAULT_ANIMATION_DURATION_MILLIS;
   private boolean mIsHandleShadowEnabled = true;
+  private int mHandleStrokeColor;
+  private int mHandleStrokeSize = 0;
+  private boolean mFrameSideDragging = false;
 
   // Constructor /////////////////////////////////////////////////////////////////////////////////
 
@@ -209,6 +212,7 @@ public CropImageView(Context context, AttributeSet attrs, int defStyle) {
     ss.guideStrokeWeight = this.mGuideStrokeWeight;
     ss.isCropEnabled = this.mIsCropEnabled;
     ss.handleColor = this.mHandleColor;
+    ss.handleColor = this.mHandleColor;
     ss.guideColor = this.mGuideColor;
     ss.initialFrameScale = this.mInitialFrameScale;
     ss.angle = this.mAngle;
@@ -251,6 +255,7 @@ public CropImageView(Context context, AttributeSet attrs, int defStyle) {
     this.mGuideStrokeWeight = ss.guideStrokeWeight;
     this.mIsCropEnabled = ss.isCropEnabled;
     this.mHandleColor = ss.handleColor;
+    this.mHandleStrokeColor = ss.handleStrokeColor;
     this.mGuideColor = ss.guideColor;
     this.mInitialFrameScale = ss.initialFrameScale;
     this.mAngle = ss.angle;
@@ -332,6 +337,7 @@ private void handleStyleable(Context context, AttributeSet attrs, int defStyle,
           ta.getColor(R.styleable.scv_CropImageView_scv_overlay_color, TRANSLUCENT_BLACK);
       mFrameColor = ta.getColor(R.styleable.scv_CropImageView_scv_frame_color, WHITE);
       mHandleColor = ta.getColor(R.styleable.scv_CropImageView_scv_handle_color, WHITE);
+      mHandleStrokeColor = ta.getColor(R.styleable.scv_CropImageView_scv_handle_stroke_color, WHITE);
       mGuideColor = ta.getColor(R.styleable.scv_CropImageView_scv_guide_color, TRANSLUCENT_WHITE);
       for (ShowMode mode : ShowMode.values()) {
         if (ta.getInt(R.styleable.scv_CropImageView_scv_guide_show_mode, 1) == mode.getId()) {
@@ -350,6 +356,7 @@ private void handleStyleable(Context context, AttributeSet attrs, int defStyle,
       setHandleShowMode(mHandleShowMode);
       mHandleSize = ta.getDimensionPixelSize(R.styleable.scv_CropImageView_scv_handle_size,
           (int) (HANDLE_SIZE_IN_DP * mDensity));
+      mHandleStrokeSize = ta.getDimensionPixelSize(R.styleable.scv_CropImageView_scv_handle_stroke_size, 0);
       mTouchPadding = ta.getDimensionPixelSize(R.styleable.scv_CropImageView_scv_touch_padding, 0);
       mMinFrameSize = ta.getDimensionPixelSize(R.styleable.scv_CropImageView_scv_min_frame_size,
           (int) (MIN_FRAME_SIZE_IN_DP * mDensity));
@@ -369,6 +376,8 @@ private void handleStyleable(Context context, AttributeSet attrs, int defStyle,
           DEFAULT_ANIMATION_DURATION_MILLIS);
       mIsHandleShadowEnabled =
           ta.getBoolean(R.styleable.scv_CropImageView_scv_handle_shadow_enabled, true);
+      mFrameSideDragging =
+              ta.getBoolean(R.styleable.scv_CropImageView_scv_frame_side_dragging_enabled, true);
     } catch (Exception e) {
       e.printStackTrace();
     } finally {
@@ -493,6 +502,7 @@ private void drawGuidelines(Canvas canvas) {
 
   private void drawHandles(Canvas canvas) {
     if (mIsHandleShadowEnabled) drawHandleShadows(canvas);
+    if (mHandleStrokeSize != 0) drawHandleStroke(canvas);
     mPaintFrame.setStyle(Paint.Style.FILL);
     mPaintFrame.setColor(mHandleColor);
     canvas.drawCircle(mFrameRect.left, mFrameRect.top, mHandleSize, mPaintFrame);
@@ -512,6 +522,16 @@ private void drawHandleShadows(Canvas canvas) {
     canvas.drawCircle(rect.right, rect.bottom, mHandleSize, mPaintFrame);
   }
 
+  private void drawHandleStroke(Canvas canvas) {
+    mPaintFrame.setStyle(Paint.Style.FILL);
+    mPaintFrame.setColor(mHandleStrokeColor);
+    RectF rect = new RectF(mFrameRect);
+    canvas.drawCircle(rect.left , rect.top , mHandleSize + mHandleStrokeSize, mPaintFrame);
+    canvas.drawCircle(rect.right , rect.top, mHandleSize + mHandleStrokeSize, mPaintFrame);
+    canvas.drawCircle(rect.left , rect.bottom , mHandleSize + mHandleStrokeSize, mPaintFrame);
+    canvas.drawCircle(rect.right , rect.bottom, mHandleSize + mHandleStrokeSize, mPaintFrame);
+  }
+
   private void setMatrix() {
     mMatrix.reset();
     mMatrix.setTranslate(mCenter.x - mImgWidth * 0.5f, mCenter.y - mImgHeight * 0.5f);
@@ -649,8 +669,22 @@ private void onMove(MotionEvent e) {
       case RIGHT_BOTTOM:
         moveHandleRB(diffX, diffY);
         break;
+      case LEFT:
+        moveHandleLT(diffX, 0);
+        break;
+      case TOP:
+        moveHandleLT(0, diffY);
+        break;
+      case RIGHT:
+        moveHandleRB(diffX, 0);
+        break;
+      case BOTTOM:
+        moveHandleRB(0, diffY);
+        break;
       case OUT_OF_BOUNDS:
         break;
+      default:
+        break;
     }
     invalidate();
     mLastX = e.getX();
@@ -696,6 +730,35 @@ private void checkTouchArea(float x, float y) {
       if (mGuideShowMode == ShowMode.SHOW_ON_TOUCH) mShowGuide = true;
       return;
     }
+
+    if(isInsideLeft(x, y) && mFrameSideDragging){
+      mTouchArea = TouchArea.LEFT;
+      if (mHandleShowMode == ShowMode.SHOW_ON_TOUCH) mShowHandle = true;
+      if (mGuideShowMode == ShowMode.SHOW_ON_TOUCH) mShowGuide = true;
+      return;
+    }
+
+    if(isInsideTop(x, y)  && mFrameSideDragging){
+      mTouchArea = TouchArea.TOP;
+      if (mHandleShowMode == ShowMode.SHOW_ON_TOUCH) mShowHandle = true;
+      if (mGuideShowMode == ShowMode.SHOW_ON_TOUCH) mShowGuide = true;
+      return;
+    }
+
+    if(isInsideRight(x, y)  && mFrameSideDragging){
+      mTouchArea = TouchArea.RIGHT;
+      if (mHandleShowMode == ShowMode.SHOW_ON_TOUCH) mShowHandle = true;
+      if (mGuideShowMode == ShowMode.SHOW_ON_TOUCH) mShowGuide = true;
+      return;
+    }
+
+    if(isInsideBottom(x, y) && mFrameSideDragging){
+      mTouchArea = TouchArea.BOTTOM;
+      if (mHandleShowMode == ShowMode.SHOW_ON_TOUCH) mShowHandle = true;
+      if (mGuideShowMode == ShowMode.SHOW_ON_TOUCH) mShowGuide = true;
+      return;
+    }
+
     if (isInsideFrame(x, y)) {
       if (mGuideShowMode == ShowMode.SHOW_ON_TOUCH) mShowGuide = true;
       mTouchArea = TouchArea.CENTER;
@@ -742,6 +805,34 @@ private boolean isInsideCornerRightBottom(float x, float y) {
     return sq(mHandleSize + mTouchPadding) >= d;
   }
 
+  private boolean isInsideLeft(float x, float y){
+    float dx = x - mFrameRect.left;
+    float dyT = y - mFrameRect.top - mTouchPadding - mHandleSize;
+    float dyB = y - mFrameRect.bottom - mTouchPadding - mHandleSize;
+    return Math.abs(dx) < mTouchPadding && dyT > 0 && dyB < 0;
+  }
+
+  private boolean isInsideTop(float x, float y){
+    float dy = y - mFrameRect.top;
+    float dxL = x - mFrameRect.left - mTouchPadding - mHandleSize;
+    float dxR = x - mFrameRect.right - mTouchPadding - mHandleSize;
+    return Math.abs(dy) < mTouchPadding && dxL > 0 && dxR < 0;
+  }
+
+  private boolean isInsideRight(float x, float y){
+    float dx = x - mFrameRect.right;
+    float dyT = y - mFrameRect.top - mTouchPadding - mHandleSize;
+    float dyB = y - mFrameRect.bottom - mTouchPadding - mHandleSize;
+    return Math.abs(dx) < mTouchPadding && dyT > 0 && dyB < 0;
+  }
+
+  private boolean isInsideBottom(float x, float y){
+    float dy = y - mFrameRect.bottom;
+    float dxL = x - mFrameRect.left - mTouchPadding - mHandleSize;
+    float dxR = x - mFrameRect.right - mTouchPadding - mHandleSize;
+    return Math.abs(dy) < mTouchPadding && dxL > 0 && dxR < 0;
+  }
+
   // Adjust frame ////////////////////////////////////////////////////////////////////////////////
 
   private void moveFrame(float x, float y) {
@@ -2339,7 +2430,7 @@ private float getFrameH() {
   // Enum ////////////////////////////////////////////////////////////////////////////////////////
 
   private enum TouchArea {
-    OUT_OF_BOUNDS, CENTER, LEFT_TOP, RIGHT_TOP, LEFT_BOTTOM, RIGHT_BOTTOM
+    OUT_OF_BOUNDS, CENTER, LEFT_TOP, RIGHT_TOP, LEFT_BOTTOM, RIGHT_BOTTOM,LEFT,TOP,RIGHT,BOTTOM
   }
 
   public enum CropMode {
@@ -2396,6 +2487,7 @@ public static class SavedState extends BaseSavedState {
     boolean showGuide;
     boolean showHandle;
     int handleSize;
+    int handleStrokeSize;
     int touchPadding;
     float minFrameSize;
     float customRatioX;
@@ -2404,6 +2496,7 @@ public static class SavedState extends BaseSavedState {
     float guideStrokeWeight;
     boolean isCropEnabled;
     int handleColor;
+    int handleStrokeColor;
     int guideColor;
     float initialFrameScale;
     float angle;
@@ -2440,6 +2533,7 @@ private SavedState(Parcel in) {
       showGuide = (in.readInt() != 0);
       showHandle = (in.readInt() != 0);
       handleSize = in.readInt();
+      handleStrokeSize = in.readInt();
       touchPadding = in.readInt();
       minFrameSize = in.readFloat();
       customRatioX = in.readFloat();
@@ -2448,6 +2542,7 @@ private SavedState(Parcel in) {
       guideStrokeWeight = in.readFloat();
       isCropEnabled = (in.readInt() != 0);
       handleColor = in.readInt();
+      handleStrokeColor = in.readInt();
       guideColor = in.readInt();
       initialFrameScale = in.readFloat();
       angle = in.readFloat();
@@ -2481,6 +2576,7 @@ private SavedState(Parcel in) {
       out.writeInt(showGuide ? 1 : 0);
       out.writeInt(showHandle ? 1 : 0);
       out.writeInt(handleSize);
+      out.writeInt(handleStrokeSize);
       out.writeInt(touchPadding);
       out.writeFloat(minFrameSize);
       out.writeFloat(customRatioX);
@@ -2489,6 +2585,7 @@ private SavedState(Parcel in) {
       out.writeFloat(guideStrokeWeight);
       out.writeInt(isCropEnabled ? 1 : 0);
       out.writeInt(handleColor);
+      out.writeInt(handleStrokeColor);
       out.writeInt(guideColor);
       out.writeFloat(initialFrameScale);
       out.writeFloat(angle);
diff --git a/simplecropview/src/main/res/values/attrs_crop_image_view.xml b/simplecropview/src/main/res/values/attrs_crop_image_view.xml
index 93967f1..43b3cdb 100644
--- a/simplecropview/src/main/res/values/attrs_crop_image_view.xml
+++ b/simplecropview/src/main/res/values/attrs_crop_image_view.xml
@@ -18,6 +18,7 @@
     <attr format="reference|color" name="scv_overlay_color"/>
     <attr format="reference|color" name="scv_frame_color"/>
     <attr format="reference|color" name="scv_handle_color"/>
+    <attr format="reference|color" name="scv_handle_stroke_color"/>
     <attr format="reference|color" name="scv_guide_color"/>
     <attr name="scv_guide_show_mode">
       <enum name="show_always" value="1"/>
@@ -30,6 +31,7 @@
       <enum name="not_show" value="3"/>
     </attr>
     <attr format="dimension" name="scv_handle_size"/>
+    <attr format="dimension" name="scv_handle_stroke_size"/>
     <attr format="dimension" name="scv_touch_padding"/>
     <attr format="dimension" name="scv_min_frame_size"/>
     <attr format="dimension" name="scv_frame_stroke_weight"/>
@@ -39,5 +41,6 @@
     <attr format="boolean" name="scv_animation_enabled"/>
     <attr format="integer" name="scv_animation_duration"/>
     <attr format="boolean" name="scv_handle_shadow_enabled"/>
+    <attr format="boolean" name="scv_frame_side_dragging_enabled"/>
   </declare-styleable>
 </resources>
\ No newline at end of file