Created
August 27, 2020 02:56
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Sample GetX todo list.
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import 'package:flutter/material.dart'; | |
import 'package:get/get.dart'; | |
class SampleTodoDemo extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return GetMaterialApp( | |
home: TodoPage(), | |
); | |
} | |
} | |
class TodoModel { | |
String name; | |
bool checked; | |
bool isEdit = false; | |
TodoModel(this.name, [this.checked = false]); | |
} | |
class TodoController extends GetxController { | |
static TodoController get() { | |
final gi = GetInstance(); | |
return gi.isRegistered<TodoController>() | |
? gi.find<TodoController>() | |
: gi.put<TodoController>(TodoController()); | |
} | |
final _list = <Rx<TodoModel>>[].obs; | |
List<Rx<TodoModel>> get list => _list.value; | |
void addItem() { | |
final item = TodoModel('blah', false); | |
_list.add(Rx<TodoModel>(item)); | |
} | |
void editItem(Rx<TodoModel> model) { | |
model.update((v) => v.isEdit = !v.isEdit); | |
if (model.value.isEdit) Get.focusScope.unfocus(); | |
} | |
void updateItemCheck(Rx<TodoModel> model, bool flag) { | |
model.update((v) => v.checked = flag); | |
} | |
updateItemName(Rx<TodoModel> model, String str) { | |
model.update((v) => v.name = str); | |
} | |
removeItem(Rx<TodoModel> model) { | |
_list.remove(model); | |
} | |
} | |
class TodoPage extends StatelessWidget { | |
final controller = TodoController.get(); | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
appBar: AppBar( | |
title: Text('todos'), | |
actions: [ | |
IconButton(icon: Icon(Icons.add), onPressed: controller.addItem), | |
], | |
), | |
body: Obx(() { | |
final list = controller.list; | |
if (list.isEmpty) { | |
return Center(child: Text('list is empty')); | |
} | |
return ListView.builder( | |
itemBuilder: (ctx, idx) => _buildItem(list[idx]), | |
itemCount: list.length, | |
); | |
}), | |
); | |
} | |
Widget _buildItem(Rx<TodoModel> rx) { | |
return Obx( | |
() { | |
final model = rx.value; | |
return ListTile( | |
leading: Row( | |
mainAxisSize: MainAxisSize.min, | |
children: [ | |
IconButton( | |
icon: Icon(model.isEdit ? Icons.check : Icons.create), | |
onPressed: () => controller.editItem(rx), | |
), | |
if (!model.isEdit) | |
IconButton( | |
icon: Icon(Icons.remove_circle), | |
onPressed: () => controller.removeItem(rx), | |
), | |
], | |
), | |
title: !model.isEdit | |
? Text(model.name) | |
: TextFormField( | |
initialValue: model.name, | |
autofocus: true, | |
enabled: model.isEdit, | |
onChanged: (str) => controller.updateItemName(rx, str), | |
), | |
trailing: Checkbox( | |
value: model.checked, | |
onChanged: (flag) => controller.updateItemCheck(rx, flag), | |
), | |
); | |
}, | |
); | |
} | |
} |
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