Migrated android example to AndroidX

Author: danvick

example/.flutter-plugins-dependencies

@@ -1 +1 @@
-{"_info":"// This is a generated file; do not edit or check into version control.","dependencyGraph":[{"name":"file_picker","dependencies":["flutter_plugin_android_lifecycle"]},{"name":"flutter_keyboard_visibility","dependencies":[]},{"name":"flutter_plugin_android_lifecycle","dependencies":[]},{"name":"multi_image_picker","dependencies":[]},{"name":"permission_handler","dependencies":[]}]}
+{"_info":"// This is a generated file; do not edit or check into version control.","dependencyGraph":[{"name":"file_picker","dependencies":["flutter_plugin_android_lifecycle"]},{"name":"flutter_keyboard_visibility","dependencies":[]},{"name":"flutter_plugin_android_lifecycle","dependencies":[]},{"name":"permission_handler","dependencies":[]}]}

example/android/app/build.gradle

@@ -43,7 +43,7 @@ android {
         targetSdkVersion 28
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
@@ -62,6 +62,6 @@ flutter {
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     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.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
 }

example/android/build.gradle

@@ -1,12 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.2.71'
+    ext.kotlin_version = '1.3.10'
     repositories {
         google()
         jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:3.6.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

example/android/gradle.properties

@@ -1,2 +1,5 @@
 org.gradle.jvmargs=-Xmx1536M
 
+android.enableR8=true
+android.useAndroidX=true
+android.enableJetifier=true

example/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Jun 23 08:50:38 CEST 2017
+#Wed Mar 25 16:41:24 EAT 2020
 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-5.6.4-all.zip

example/lib/main.dart

@@ -33,19 +33,38 @@ class _MyHomePageState extends State<MyHomePage> {
       ),
       body: Padding(
         padding: EdgeInsets.all(10),
-      child: FormBuilder(
-        key: _formKey,
-        child: Column(
-          children: <Widget>[
-            FormBuilderFilePicker(
-              attribute: "images",
-              decoration: InputDecoration(labelText: "Attachments"),
-              maxImages: 5,
-            ),
-          ],
+        child: FormBuilder(
+          key: _formKey,
+          child: Column(
+            children: <Widget>[
+              FormBuilderFilePicker(
+                attribute: "images",
+                decoration: InputDecoration(labelText: "Attachments"),
+                maxFiles: 5,
+                multiple: true,
+                previewImages: false,
+                onChanged: (val) => print(val),
+                // fileExtension: "PDF",
+                // fileType: FileType.custom,
+                selector: Row(
+                  children: <Widget>[
+                    Icon(Icons.file_upload),
+                    Text('Upload'),
+                  ],
+                ),
+              ),
+              SizedBox(height: 20),
+              RaisedButton(
+                child: Text('Submit'),
+                onPressed: () {
+                  _formKey.currentState.save();
+                  print(_formKey.currentState.value);
+                },
+              ),
+            ],
+          ),
         ),
       ),
-      ),
     );
   }
 }

example/pubspec.lock

@@ -143,7 +143,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.1"
+    version: "0.0.2"
   image:
     dependency: transitive
     description:
@@ -172,13 +172,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.8"
-  multi_image_picker:
-    dependency: transitive
-    description:
-      name: multi_image_picker
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "4.6.4"
   path:
     dependency: transitive
     description: