android: update gradle plugin version

android/app/build.gradle

         android.applicationVariants.all { variant ->
             variant.outputs.each { output ->
                 output.processManifest.doLast {
-                    def f = new File(manifestOutputDirectory, 'AndroidManifest.xml')
-                    if (!f.isFile()) {
-                        f = new File(new File(manifestOutputDirectory, output.dirName), 'AndroidManifest.xml')
-                    }
-                    if (f.exists()) {
-                        def charset = 'UTF-8'
-                        def s = f.getText(charset)
-                        s = s.replace('</application>', "${dropboxActivity}</application>")
-                        f.write(s, charset)
-                    }
+                    def outputDir = manifestOutputDirectory.get().asFile
+                    def manifestPath = new File(outputDir, 'AndroidManifest.xml')
+                    def charset = 'UTF-8'
+                    def text
+                    text = manifestPath.getText(charset)
+                    text = text.replace('</application>', "${dropboxActivity}</application>")
+                    manifestPath.write(text, charset)
                 }
             }
         }

android/build.gradle

         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:3.3.2'
         classpath 'com.google.gms:google-services:4.2.0'
         classpath 'io.fabric.tools:gradle:1.27.0'
 

android/gradle/wrapper/gradle-wrapper.properties

-#Wed Dec 19 12:02:47 CET 2018
+#Fri Mar 08 13:36:51 CET 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip

android/sdk/build.gradle

 
     currentBundleTask.ext.generatedResFolders = files(resourcesDir).builtBy(currentBundleTask)
     currentBundleTask.ext.generatedAssetsFolders = files(jsBundleDir).builtBy(currentBundleTask)
-
     variant.registerGeneratedResFolders(currentBundleTask.generatedResFolders)
-    variant.mergeResources.dependsOn(currentBundleTask)
 
-    def assetsDir = variant.mergeAssets.outputDir
+    def mergeAssetsTask = variant.mergeAssetsProvider.get()
+    def mergeResourcesTask = variant.mergeResourcesProvider.get()
+
+    mergeAssetsTask.dependsOn(currentBundleTask)
+    mergeResourcesTask.dependsOn(currentBundleTask)
+
+    mergeAssetsTask.doLast {
+        def assetsDir = mergeAssetsTask.outputDir
 
-    variant.mergeAssets.doLast {
         // Bundle fonts
         //
         copy {
         //
         if (currentBundleTask.enabled) {
             copy {
-                from(jsBundleDir)
+                from(jsBundleFile)
                 into(assetsDir)
             }
         }
     }
 
-    variant.mergeResources.doLast {
+    mergeResourcesTask.doLast {
         // Copy React resources
         //
         if (currentBundleTask.enabled) {
             copy {
                 from(resourcesDir)
-                into(variant.mergeResources.outputDir)
+                into(mergeResourcesTask.outputDir)
             }
         }
     }