我想以任何方式在飛鏢/顫振中設定全寬 100%。但它沒有設定在顫振的下拉串列中。下面詳細介紹我的源代碼。
Container(
height: 50,
width: 500.0,
// width: MediaQuery.of(context).size.width,
child: Expanded(
child: DropdownButtonHideUnderline(
child: ButtonTheme(
alignedDropdown: true,
child: DropdownButton(
isExpanded: true,
value: _selectionRetailer,
style: Theme.of(context).textTheme.bodyText1,
// items: mRetailList.map((index) {
items: mRouteWiseRetailList.map((index) {
return DropdownMenuItem(
alignment: Alignment.center,
child: new Text(
index.retailerTitle "_" index.retailerAddress,
style: TextStyle(fontSize: 10),
),
value: index.retailerID,
);
}).toList(),
onChanged: (sal) {
setState(() {
mRetailer = sal;
_selectionRetailer = sal;
retailerID = sal;
print("SAVEDATADD" "retailerID: $retailerID");
if (reasonID == "0") {
} else {
startTime = Fhelper.CurrentDateTime();
Fhelper.showToast(
"RetailerID: $retailerID, StartTime: $startTime, salesOfficerID: $salesOfficerID");
print("SAVEDATADD"
"RetailerID: $retailerID, StartTime: $startTime, salesOfficerID: $salesOfficerID,entryBy : $entryBy");
clearAll();
}
});
},
),
),
),
),
),
如何在顫動的下拉串列中實作這個全寬。
uj5u.com熱心網友回復：
洗掉Expanded和Container并按照下面給出的代碼
DropdownButtonHideUnderline(
child: ButtonTheme(
alignedDropdown: true,
child: DropdownButton(
isExpanded: true,
value: dropdownvalue,
icon: Icon(Icons.keyboard_arrow_down),
items:items.map((String items) {
return DropdownMenuItem(
value: items,
child: Text(items)
);
}
).toList(),
onChanged: (String newValue){
setState(() {
dropdownvalue = newValue;
});
},
),
),
)
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