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Added the KB sample
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‎.gitignore‎

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# Miscellaneous
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*.class
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*.log
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*.pyc
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*.swp
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.DS_Store
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.atom/
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.buildlog/
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.history
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.svn/
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migrate_working_dir/
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# IntelliJ related
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*.iml
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*.ipr
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*.iws
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.idea/
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# The .vscode folder contains launch configuration and tasks you configure in
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# VS Code which you may wish to be included in version control, so this line
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# is commented out by default.
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#.vscode/
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# Flutter/Dart/Pub related
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**/doc/api/
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**/ios/Flutter/.last_build_id
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.dart_tool/
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.flutter-plugins
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.flutter-plugins-dependencies
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.packages
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.pub-cache/
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.pub/
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/build/
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# Symbolication related
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app.*.symbols
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# Obfuscation related
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app.*.map.json
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# Android Studio will place build artifacts here
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/android/app/debug
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/android/app/profile
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/android/app/release

‎README.md‎

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# how-to-set-the-key-property-for-each-row-in-a-flutter-data-table
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How to set the key property for each row in a Flutter DataTable (SfDataGrid)
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# How to set the key property for each row in a Flutter DataTable (SfDataGrid)?
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In this article, we'll discuss how to set the key property for each row in a [Flutter DataGrid](https://www.syncfusion.com/flutter-widgets/flutter-datagrid) within the [SfDataGrid](https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/SfDataGrid-class.html) widget for automation purposes.
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## STEP 1:
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Initialize the [SfDataGrid](https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/SfDataGrid-class.html) widget with all the required properties.
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```dart
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@override
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void initState() {
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super.initState();
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employees = getEmployeeData();
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employeeDataSource = EmployeeDataSource(employeeData: employees);
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('Syncfusion Flutter DataGrid'),
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),
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body: SfDataGrid(
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source: employeeDataSource,
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columnWidthMode: ColumnWidthMode.fill,
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columns: <GridColumn>[
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GridColumn(
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columnName: 'id',
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label: Container(
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padding: const EdgeInsets.all(16.0),
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alignment: Alignment.center,
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child: const Text(
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'ID',
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))),
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GridColumn(
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columnName: 'name',
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label: Container(
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padding: const EdgeInsets.all(8.0),
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alignment: Alignment.center,
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child: const Text('Name'))),
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GridColumn(
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columnName: 'designation',
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label: Container(
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padding: const EdgeInsets.all(8.0),
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alignment: Alignment.center,
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child: const Text(
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'Designation',
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overflow: TextOverflow.ellipsis,
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))),
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GridColumn(
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columnName: 'salary',
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label: Container(
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padding: const EdgeInsets.all(8.0),
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alignment: Alignment.center,
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child: const Text('Salary'))),
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],
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),
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);
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}
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```
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## STEP 2:
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The buildRow method in the [DataGridSource](https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/DataGridSource-class.html) class creates a [DataGridRowAdapter](https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/DataGridRowAdapter-class.html) for every row in the DataGrid. The DataGridRowAdapter is used to customize how each row looks and behaves. To assign a unique identifier to each DataGridRowAdapter, a [Key](https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/DataGridRowAdapter/key.html) is used. This key allows easy referencing and interaction with specific rows in the [SfDataGrid](https://pub.dev/documentation/syncfusion_flutter_datagrid/latest/datagrid/SfDataGrid-class.html), enabling automation and other operations that require identifying individual rows.
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```dart
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class EmployeeDataSource extends DataGridSource {
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EmployeeDataSource({required List<Employee> employeeData}) {
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_employeeData = employeeData
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.map<DataGridRow>((e) => DataGridRow(cells: [
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DataGridCell<int>(columnName: 'id', value: e.id),
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DataGridCell<String>(columnName: 'name', value: e.name),
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DataGridCell<String>(
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columnName: 'designation', value: e.designation),
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DataGridCell<int>(columnName: 'salary', value: e.salary),
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]))
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.toList();
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}
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List<DataGridRow> _employeeData = [];
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@override
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List<DataGridRow> get rows => _employeeData;
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@override
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DataGridRowAdapter buildRow(DataGridRow row) {
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final index = _employeeData.indexOf(row);
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final ValueKey<String> valueKey = ValueKey<String>('employee_$index');
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return DataGridRowAdapter(
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key: valueKey,
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cells: row.getCells().map<Widget>((e) {
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return Container(
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alignment: Alignment.center,
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padding: const EdgeInsets.all(8.0),
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child: Text(e.value.toString()),
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);
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}).toList());
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}
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}
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```

‎android/.gitignore‎

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gradle-wrapper.jar
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/.gradle
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/captures/
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/gradlew
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/gradlew.bat
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/local.properties
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GeneratedPluginRegistrant.java
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# Remember to never publicly share your keystore.
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# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
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key.properties
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**/*.keystore
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**/*.jks

‎android/app/build.gradle‎

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def localProperties = new Properties()
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def localPropertiesFile = rootProject.file('local.properties')
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if (localPropertiesFile.exists()) {
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localPropertiesFile.withReader('UTF-8') { reader ->
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localProperties.load(reader)
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}
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}
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def flutterRoot = localProperties.getProperty('flutter.sdk')
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if (flutterRoot == null) {
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throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
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}
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def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
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if (flutterVersionCode == null) {
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flutterVersionCode = '1'
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}
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def flutterVersionName = localProperties.getProperty('flutter.versionName')
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if (flutterVersionName == null) {
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flutterVersionName = '1.0'
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}
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apply plugin: 'com.android.application'
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apply plugin: 'kotlin-android'
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apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
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android {
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namespace "com.example.flutter_application_1"
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compileSdkVersion flutter.compileSdkVersion
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ndkVersion flutter.ndkVersion
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compileOptions {
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sourceCompatibility JavaVersion.VERSION_1_8
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targetCompatibility JavaVersion.VERSION_1_8
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}
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kotlinOptions {
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jvmTarget = '1.8'
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}
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sourceSets {
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main.java.srcDirs += 'src/main/kotlin'
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}
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defaultConfig {
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// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
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applicationId "com.example.flutter_application_1"
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// You can update the following values to match your application needs.
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// For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
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minSdkVersion flutter.minSdkVersion
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targetSdkVersion flutter.targetSdkVersion
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versionCode flutterVersionCode.toInteger()
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versionName flutterVersionName
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}
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buildTypes {
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release {
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// TODO: Add your own signing config for the release build.
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// Signing with the debug keys for now, so `flutter run --release` works.
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signingConfig signingConfigs.debug
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}
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}
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}
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flutter {
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source '../..'
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}
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dependencies {
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implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
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}

‎android/app/src/debug/AndroidManifest.xml‎

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<!-- The INTERNET permission is required for development. Specifically,
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the Flutter tool needs it to communicate with the running application
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to allow setting breakpoints, to provide hot reload, etc.
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-->
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<uses-permission android:name="android.permission.INTERNET"/>
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</manifest>

‎android/app/src/main/AndroidManifest.xml‎

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<application
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android:label="flutter_application_1"
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android:name="${applicationName}"
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android:icon="@mipmap/ic_launcher">
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<activity
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android:name=".MainActivity"
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android:exported="true"
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android:launchMode="singleTop"
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android:theme="@style/LaunchTheme"
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android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
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android:hardwareAccelerated="true"
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android:windowSoftInputMode="adjustResize">
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<!-- Specifies an Android theme to apply to this Activity as soon as
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the Android process has started. This theme is visible to the user
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while the Flutter UI initializes. After that, this theme continues
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to determine the Window background behind the Flutter UI. -->
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<meta-data
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android:name="io.flutter.embedding.android.NormalTheme"
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android:resource="@style/NormalTheme"
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/>
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<intent-filter>
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<action android:name="android.intent.action.MAIN"/>
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<category android:name="android.intent.category.LAUNCHER"/>
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</intent-filter>
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</activity>
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<!-- Don't delete the meta-data below.
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This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
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<meta-data
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android:name="flutterEmbedding"
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android:value="2" />
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</application>
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</manifest>

‎android/app/src/main/kotlin/com/example/flutter_application_1/MainActivity.kt‎

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package com.example.flutter_application_1
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import io.flutter.embedding.android.FlutterActivity
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class MainActivity: FlutterActivity() {
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}

‎android/app/src/main/res/drawable-v21/launch_background.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!-- Modify this file to customize your launch splash screen -->
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<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
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<item android:drawable="?android:colorBackground" />
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<!-- You can insert your own image assets here -->
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<!-- <item>
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<bitmap
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android:gravity="center"
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android:src="@mipmap/launch_image" />
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</item> -->
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</layer-list>

‎android/app/src/main/res/drawable/launch_background.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!-- Modify this file to customize your launch splash screen -->
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<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
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<item android:drawable="@android:color/white" />
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<!-- You can insert your own image assets here -->
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<!-- <item>
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<bitmap
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android:gravity="center"
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android:src="@mipmap/launch_image" />
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</item> -->
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</layer-list>

‎android/app/src/main/res/mipmap-hdpi/ic_launcher.png‎

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