upgrade gradle

android/build.gradle

@@ -8,8 +8,8 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.1'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.20"
+        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50"
     }
 }
 
@@ -24,14 +24,14 @@ apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 29
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 28
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -43,7 +43,7 @@ android {
 
 dependencies {
     implementation 'androidx.appcompat:appcompat:1.0.2'
-    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.20'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.50'
     implementation 'me.dm7.barcodescanner:zxing:1.9.13'
     api 'com.google.android.material:material:1.0.0'
 }

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Jan 30 20:42:57 BRST 2019
+#Tue Aug 27 10:46:28 ICT 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip