diff --git a/app/build.gradle b/app/build.gradle
index 3c01bd7..a6a1ca5 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -26,11 +26,13 @@ android {
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
 
-    implementation "com.android.support:appcompat-v7:$rootProject.supportLibraryVersion"
-    implementation "com.android.support:design:$rootProject.supportLibraryVersion"
+    implementation "androidx.appcompat:appcompat:$rootProject.appcompat"
+    implementation "com.google.android.material:material:$rootProject.design"
+    implementation "androidx.databinding:databinding-common:3.4.1"
 
     implementation project(':widget')
 //    implementation 'com.github.ittianyu:BottomNavigationViewEx:2.0.4'
diff --git a/app/src/androidTest/java/com/ittianyu/bottomnavigationviewexsample/ExampleInstrumentedTest.java b/app/src/androidTest/java/com/ittianyu/bottomnavigationviewexsample/ExampleInstrumentedTest.java
index 9ac0039..ed21041 100644
--- a/app/src/androidTest/java/com/ittianyu/bottomnavigationviewexsample/ExampleInstrumentedTest.java
+++ b/app/src/androidTest/java/com/ittianyu/bottomnavigationviewexsample/ExampleInstrumentedTest.java
@@ -1,8 +1,8 @@
 package com.ittianyu.bottomnavigationviewexsample;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -19,7 +19,7 @@ public class ExampleInstrumentedTest {
     @Test
     public void useAppContext() throws Exception {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getTargetContext();
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
 
         assertEquals("com.ittianyu.bottomnavigationviewex", appContext.getPackageName());
     }
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/common/base/BaseFragment.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/common/base/BaseFragment.java
index b5c7883..c041748 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/common/base/BaseFragment.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/common/base/BaseFragment.java
@@ -1,9 +1,9 @@
 package com.ittianyu.bottomnavigationviewexsample.common.base;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/MainActivity.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/MainActivity.java
index 2f094d0..084f92c 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/MainActivity.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/MainActivity.java
@@ -1,9 +1,9 @@
 package com.ittianyu.bottomnavigationviewexsample.features;
 
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.View;
 
 import com.ittianyu.bottomnavigationviewexsample.R;
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/badgeview/BadgeViewActivity.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/badgeview/BadgeViewActivity.java
index c7cd83e..8e137ef 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/badgeview/BadgeViewActivity.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/badgeview/BadgeViewActivity.java
@@ -1,8 +1,8 @@
 package com.ittianyu.bottomnavigationviewexsample.features.badgeview;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.View;
 import android.widget.Toast;
 
@@ -20,7 +20,6 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 //        setContentView(R.layout.activity_badge_view);
         bind = DataBindingUtil.setContentView(this, R.layout.activity_badge_view);
-
         initView();
     }
 
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/centerfab/CenterFabActivity.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/centerfab/CenterFabActivity.java
index 3cb1bed..6fe0a6c 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/centerfab/CenterFabActivity.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/centerfab/CenterFabActivity.java
@@ -1,14 +1,14 @@
 package com.ittianyu.bottomnavigationviewexsample.features.centerfab;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.design.widget.BottomNavigationView;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentPagerAdapter;
-import android.support.v4.view.ViewPager;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentPagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
 import android.view.MenuItem;
 import android.view.View;
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/setupwithviewpager/SetupWithViewPagerActivity.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/setupwithviewpager/SetupWithViewPagerActivity.java
index fa217b4..89b54db 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/setupwithviewpager/SetupWithViewPagerActivity.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/setupwithviewpager/SetupWithViewPagerActivity.java
@@ -1,13 +1,13 @@
 package com.ittianyu.bottomnavigationviewexsample.features.setupwithviewpager;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.design.widget.BottomNavigationView;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentPagerAdapter;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentPagerAdapter;
+import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
 import android.view.MenuItem;
 
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/style/StyleActivity.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/style/StyleActivity.java
index 2b9d170..f9b469e 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/style/StyleActivity.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/style/StyleActivity.java
@@ -1,11 +1,11 @@
 package com.ittianyu.bottomnavigationviewexsample.features.style;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Typeface;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.design.widget.BottomNavigationView;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.MenuItem;
 import android.widget.Toast;
 
diff --git a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/viewpager/WithViewPagerActivity.java b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/viewpager/WithViewPagerActivity.java
index 751468a..c2dd0e2 100644
--- a/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/viewpager/WithViewPagerActivity.java
+++ b/app/src/main/java/com/ittianyu/bottomnavigationviewexsample/features/viewpager/WithViewPagerActivity.java
@@ -1,14 +1,14 @@
 package com.ittianyu.bottomnavigationviewexsample.features.viewpager;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.design.widget.BottomNavigationView;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentPagerAdapter;
-import android.support.v4.view.ViewPager;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentPagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
 import android.util.SparseIntArray;
 import android.view.MenuItem;
diff --git a/app/src/main/res/layout/activity_center_fab.xml b/app/src/main/res/layout/activity_center_fab.xml
index 953e586..a6024fd 100644
--- a/app/src/main/res/layout/activity_center_fab.xml
+++ b/app/src/main/res/layout/activity_center_fab.xml
@@ -19,13 +19,13 @@
             app:itemTextColor="@color/selector_item_primary_color"
             app:menu="@menu/menu_navigation_center_fab" />
 
-        <android.support.v4.view.ViewPager
+        <androidx.viewpager.widget.ViewPager
             android:id="@+id/vp"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:layout_above="@id/bnve" />
 
-        <android.support.design.widget.FloatingActionButton
+        <com.google.android.material.floatingactionbutton.FloatingActionButton
             android:id="@+id/fab"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
diff --git a/app/src/main/res/layout/activity_with_view_pager.xml b/app/src/main/res/layout/activity_with_view_pager.xml
index fc7d70e..3be323f 100644
--- a/app/src/main/res/layout/activity_with_view_pager.xml
+++ b/app/src/main/res/layout/activity_with_view_pager.xml
@@ -20,7 +20,7 @@
             app:itemTextColor="@color/selector_item_gray_color"
             app:menu="@menu/menu_navigation_with_view_pager" />
 
-        <android.support.v4.view.ViewPager
+        <androidx.viewpager.widget.ViewPager
             android:id="@+id/vp"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
diff --git a/build.gradle b/build.gradle
index b58c2bf..52059d2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath 'com.android.tools.build:gradle:3.4.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -28,9 +28,11 @@ task clean(type: Delete) {
 
 ext {
     targetSdkVersion = 28
-    buildToolsVersion = '28.0.2'
+    buildToolsVersion = '28.0.3'
     compileSdkVersion = 28
 
     // Libraries
     supportLibraryVersion = '28.0.0'
+    appcompat = '1.0.0'
+    design = '1.0.0-rc01'
 }
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index aac7c9b..706bcd1 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,3 +15,6 @@ org.gradle.jvmargs=-Xmx1536m
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
+
+android.useAndroidX=true
+android.enableJetifier=true
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index dcb44d4..a714c60 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-4.6-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
diff --git a/widget/build.gradle b/widget/build.gradle
index f434746..3deeaa9 100644
--- a/widget/build.gradle
+++ b/widget/build.gradle
@@ -10,10 +10,10 @@ android {
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 24
-        versionName "2.0.4"
+        versionCode 25
+        versionName "2.0.5"
 
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
     }
     buildTypes {
@@ -28,10 +28,12 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
 
-    implementation "com.android.support:design:$rootProject.supportLibraryVersion"
+    implementation "androidx.appcompat:appcompat:$rootProject.appcompat"
+    implementation "com.google.android.material:material:$rootProject.design"
 }
 
 // 指定编码
diff --git a/widget/src/androidTest/java/com/ittianyu/bottomnavigationviewex/ExampleInstrumentedTest.java b/widget/src/androidTest/java/com/ittianyu/bottomnavigationviewex/ExampleInstrumentedTest.java
index c419112..2cea5e1 100644
--- a/widget/src/androidTest/java/com/ittianyu/bottomnavigationviewex/ExampleInstrumentedTest.java
+++ b/widget/src/androidTest/java/com/ittianyu/bottomnavigationviewex/ExampleInstrumentedTest.java
@@ -1,8 +1,8 @@
 package com.ittianyu.bottomnavigationviewex;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -19,7 +19,7 @@ public class ExampleInstrumentedTest {
     @Test
     public void useAppContext() throws Exception {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getTargetContext();
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
 
         assertEquals("com.ittianyu.bottomnavigationviewex.test", appContext.getPackageName());
     }
diff --git a/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewEx.java b/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewEx.java
index b5176b2..065f9c0 100644
--- a/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewEx.java
+++ b/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewEx.java
@@ -3,9 +3,9 @@
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.graphics.Typeface;
-import android.support.design.internal.BottomNavigationItemView;
-import android.support.design.internal.BottomNavigationMenuView;
-import android.support.v4.view.ViewPager;
+import com.google.android.material.bottomnavigation.BottomNavigationItemView;
+import com.google.android.material.bottomnavigation.BottomNavigationMenuView;
+import androidx.viewpager.widget.ViewPager;
 import android.util.AttributeSet;
 import android.view.MenuItem;
 import android.widget.ImageView;
diff --git a/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewInner.java b/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewInner.java
index 62befd0..b7d75d5 100644
--- a/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewInner.java
+++ b/widget/src/main/java/com/ittianyu/bottomnavigationviewex/BottomNavigationViewInner.java
@@ -5,12 +5,12 @@
 import android.content.res.ColorStateList;
 import android.graphics.Paint;
 import android.graphics.Typeface;
-import android.support.design.internal.BottomNavigationItemView;
-import android.support.design.internal.BottomNavigationMenuView;
-import android.support.design.internal.ThemeEnforcement;
-import android.support.design.widget.BottomNavigationView;
-import android.support.v4.view.ViewPager;
-import android.support.v7.widget.TintTypedArray;
+import com.google.android.material.bottomnavigation.BottomNavigationItemView;
+import com.google.android.material.bottomnavigation.BottomNavigationMenuView;
+import com.google.android.material.internal.ThemeEnforcement;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import androidx.viewpager.widget.ViewPager;
+import androidx.appcompat.widget.TintTypedArray;
 import android.util.AttributeSet;
 import android.util.SparseIntArray;
 import android.util.TypedValue;
@@ -64,12 +64,12 @@ public BottomNavigationViewInner(Context context, AttributeSet attrs) {
     public BottomNavigationViewInner(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         TintTypedArray a = ThemeEnforcement.obtainTintedStyledAttributes(context, attrs,
-                android.support.design.R.styleable.BottomNavigationView,
-                defStyleAttr, android.support.design.R.style.Widget_Design_BottomNavigationView,
-                new int[]{android.support.design.R.styleable.BottomNavigationView_itemTextAppearanceInactive,
-                        android.support.design.R.styleable.BottomNavigationView_itemTextAppearanceActive});
+                com.google.android.material.R.styleable.BottomNavigationView,
+                defStyleAttr, com.google.android.material.R.style.Widget_Design_BottomNavigationView,
+                new int[]{com.google.android.material.R.styleable.BottomNavigationView_itemTextAppearanceInactive,
+                        com.google.android.material.R.styleable.BottomNavigationView_itemTextAppearanceActive});
         // clear if you don't have set item icon tint list
-        if (!a.hasValue(android.support.design.R.styleable.BottomNavigationView_itemIconTint)) {
+        if (!a.hasValue(com.google.android.material.R.styleable.BottomNavigationView_itemIconTint)) {
             clearIconTintColor();
         }
         a.recycle();