text
stringlengths 1
80
|
|---|
void initState() {
|
super.initState();
|
loadData();
|
}
|
widget getBody() {
|
bool showLoadingDialog = widgets.isEmpty;
|
if (showloadingdialog) {
|
return getProgressDialog();
|
} else {
|
return getListView();
|
}
|
}
|
widget getProgressDialog() {
|
return const center(child: CircularProgressIndicator());
|
}
|
@override
|
widget build(BuildContext context) {
|
return scaffold(
|
appBar: AppBar(
|
title: const Text('Sample app'),
|
),
|
body: getBody(),
|
);
|
}
|
ListView getListView() {
|
return ListView.builder(
|
itemCount: widgets.length,
|
itemBuilder: (context, position) {
|
return getRow(position);
|
},
|
);
|
}
|
widget getRow(int i) {
|
return padding(
|
padding: const EdgeInsets.all(10),
|
child: Text("Row ${widgets[i]["title"]}"),
|
);
|
}
|
future<void> loadData() async {
|
var dataURL = uri.parse('https://jsonplaceholder.typicode.com/posts');
|
http.Response response = await http.get(dataURL);
|
setState(() {
|
widgets = jsonDecode(response.body);
|
});
|
}
|
}
|
<code_end>
|
<topic_end>
|
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