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feat: 支持默认省市区 #1

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feat: 支持默认省市区 #1

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53 changes: 46 additions & 7 deletions address_picker/lib/address_picker.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -22,22 +22,27 @@ enum AddressPickerMode {
}

class AddressPicker extends StatefulWidget {

/// 选中的地址发生改变回调
final AddressCallback onSelectedAddressChanged;

/// 选择模式
/// province 一级: 省
/// provinceAndCity 二级: 省市
/// provinceAndCity 二级: 省市
/// provinceCityAndDistrict 三级: 省市区
final AddressPickerMode mode;

/// 省市区文字显示样式
final TextStyle style;

///省市区
final String prov, city, dist;

AddressPicker(
{Key key,
this.mode = AddressPickerMode.provinceCityAndDistrict,
this.prov,
this.city,
this.dist,
this.onSelectedAddressChanged,
this.style = const TextStyle(color: Colors.black, fontSize: 17)})
: super(key: key);
Expand All @@ -52,10 +57,9 @@ class _AddressPickerState extends State<AddressPicker> {
AddressCity _selectedCity;
AddressDistrict _selectedDistrict;

FixedExtentScrollController _cityScrollController =
FixedExtentScrollController(initialItem: 0);
FixedExtentScrollController _districtScrollController =
FixedExtentScrollController(initialItem: 0);
FixedExtentScrollController _provScrollController,
_cityScrollController,
_districtScrollController;

@override
void dispose() {
Expand All @@ -75,8 +79,42 @@ class _AddressPickerState extends State<AddressPicker> {
setState(() {
_provinces = addressData;
_selectedProvince = _provinces.first;
if (widget.prov != null) {
_provinces.asMap().forEach((i, e) {
if (e.province == widget.prov) {
_selectedProvince = e;
_provScrollController = FixedExtentScrollController(initialItem: i);
}
});
}
_selectedCity = _selectedProvince.cities.first;
if (widget.city != null) {
_selectedProvince.cities.asMap().forEach((i, e) {
if (e.city == widget.city) {
_selectedCity = e;
_cityScrollController = FixedExtentScrollController(initialItem: i);
}
});
}
_selectedDistrict = _selectedCity.district.first;
if (widget.dist != null) {
_selectedCity.district.asMap().forEach((i, e) {
if (e.area == widget.dist) {
_selectedDistrict = e;
_districtScrollController =
FixedExtentScrollController(initialItem: i);
}
});
}
if (_provScrollController == null) {
_provScrollController = FixedExtentScrollController(initialItem: 0);
}
if (_cityScrollController == null) {
_cityScrollController = FixedExtentScrollController(initialItem: 0);
}
if (_districtScrollController == null) {
_districtScrollController = FixedExtentScrollController(initialItem: 0);
}
});
}

Expand All @@ -103,6 +141,7 @@ class _AddressPickerState extends State<AddressPicker> {
Expanded(
flex: 1,
child: CupertinoPicker.builder(
scrollController: _provScrollController,
backgroundColor: Colors.white,
childCount: _provinces?.length ?? 0,
itemBuilder: (context, index) {
Expand Down