diff --git a/.travis.yml b/.travis.yml
index 304367b..d7e3b7b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ android:
   components:
   - tools
   - platform-tools
-  - build-tools-26.0.2
+  - build-tools-28.0.3
   - android-26
   - extra-google-m2repository
   - extra-android-m2repository
diff --git a/app/build.gradle b/app/build.gradle
index 707bb90..d2bf32f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -32,7 +32,7 @@ android {
         }
     }
     compileSdkVersion 26
-    buildToolsVersion '26.0.2'
+    buildToolsVersion '28.0.3'
     defaultConfig {
         applicationId "com.leanote.android"
         minSdkVersion 19
@@ -63,48 +63,48 @@ android {
 
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    api fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:26.1.0'
-    compile 'com.android.support:support-v4:26.1.0'
-    compile 'com.android.support:design:26.1.0'
-    compile 'com.android.support:recyclerview-v7:26.1.0'
-    compile 'com.android.support:cardview-v7:26.1.0'
+    testImplementation 'junit:junit:4.12'
+    implementation 'com.android.support:appcompat-v7:26.1.0'
+    implementation 'com.android.support:support-v4:26.1.0'
+    implementation 'com.android.support:design:26.1.0'
+    implementation 'com.android.support:recyclerview-v7:26.1.0'
+    implementation 'com.android.support:cardview-v7:26.1.0'
 
-    compile 'com.jakewharton:butterknife:8.4.0'
+    implementation 'com.jakewharton:butterknife:8.4.0'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'
 
-    compile group: 'com.squareup.okhttp3', name: 'logging-interceptor', version: '3.4.1'
-    compile group: 'com.squareup.retrofit2', name: 'adapter-rxjava', version: '2.1.0'
+    implementation group: 'com.squareup.okhttp3', name: 'logging-interceptor', version: '3.4.1'
+    implementation group: 'com.squareup.retrofit2', name: 'adapter-rxjava', version: '2.1.0'
 
     annotationProcessor "com.github.Raizlabs.DBFlow:dbflow-processor:${dbflow_version}"
-    compile "com.github.Raizlabs.DBFlow:dbflow-core:${dbflow_version}"
-    compile "com.github.Raizlabs.DBFlow:dbflow:${dbflow_version}"
+    implementation "com.github.Raizlabs.DBFlow:dbflow-core:${dbflow_version}"
+    implementation "com.github.Raizlabs.DBFlow:dbflow:${dbflow_version}"
 
-    compile 'org.greenrobot:eventbus:3.0.0'
+    implementation 'org.greenrobot:eventbus:3.0.0'
 
-    compile 'io.reactivex:rxandroid:1.2.1'
-    compile 'io.reactivex:rxjava:1.1.9'
-    compile group: 'com.google.code.gson', name: 'gson', version: '2.7'
-    compile 'org.mongodb:mongo-java-driver:2.12.4'
+    implementation 'io.reactivex:rxandroid:1.2.1'
+    implementation 'io.reactivex:rxjava:1.1.9'
+    implementation group: 'com.google.code.gson', name: 'gson', version: '2.7'
+    implementation 'org.mongodb:mongo-java-driver:2.12.4'
 
-    compile 'com.github.bumptech.glide:glide:3.7.0'
-    compile 'jp.wasabeef:glide-transformations:2.0.1'
-    compile 'com.android.support:support-v13:26.1.0'
-    compile 'com.github.xingstarx:ImageSelector:master-SNAPSHOT'
-    compile 'com.facebook.stetho:stetho:1.4.2'
-    compile 'com.facebook.stetho:stetho-okhttp3:1.4.2'
-    compile 'com.github.houxg:FlexLayout:1.2'
+    implementation 'com.github.bumptech.glide:glide:3.7.0'
+    implementation 'jp.wasabeef:glide-transformations:2.0.1'
+    implementation 'com.android.support:support-v13:26.1.0'
+    implementation 'com.github.xingstarx:ImageSelector:master-SNAPSHOT'
+    implementation 'com.facebook.stetho:stetho:1.4.2'
+    implementation 'com.facebook.stetho:stetho-okhttp3:1.4.2'
+    implementation 'com.github.houxg:FlexLayout:1.2'
 
-    compile 'net.danlew:android.joda:2.9.5'
-    compile 'com.tencent.bugly:crashreport_upgrade:latest.release'
-    compile 'com.elvishew:xlog:1.3.0'
-    compile 'com.github.piasy:BigImageViewer:1.2.5'
-    compile 'com.github.piasy:GlideImageLoader:1.2.5'
-    compile 'com.weiwangcn.betterspinner:library-material:1.1.0'
+    implementation 'net.danlew:android.joda:2.9.5'
+    implementation 'com.tencent.bugly:crashreport_upgrade:latest.release'
+    implementation 'com.elvishew:xlog:1.3.0'
+    implementation 'com.github.piasy:BigImageViewer:1.2.5'
+    implementation 'com.github.piasy:GlideImageLoader:1.2.5'
+    implementation 'com.weiwangcn.betterspinner:library-material:1.1.0'
 
     implementation 'com.android.support.constraint:constraint-layout:1.0.2'
 }
diff --git a/build.gradle b/build.gradle
index 7e01a0a..3e8e35b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -23,3 +23,4 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 7a73f98..374eef3 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Oct 25 13:31:06 CST 2017
+#Wed Jan 02 18:30:46 CST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip