此问题与Flutter有关。我在TextField上方有一个DropdownButton,如下所示:
DropdownButton<String>(
isExpanded: true,
hint: Text(associatedHint),
disabledHint: Text(associatedHint),
items: diagnosesList.map((int value) {
return DropdownMenuItem<String>(
value: value.toString(),
child: Text(dxDisplay),
);
}).toList(),
value: ANID,
onChanged: (String newANID) {
setState(() {
ANID = newANID;
});
},
),
TextField(
autofocus: true,
keyboardType: keyboardType,
maxLines: maxLines,
textCapitalization: TextCapitalization.sentences,
controller: _textEntryController,
decoration: InputDecoration(hintText: "Entry"),
onChanged: (value) {
noteEntry = value;
},
),
TextField自动对焦会立即调出键盘。当您点击DropdownButton时,它会从TextField移开焦点,从而关闭键盘。这样会在屏幕上四处移动,并导致UX效果不佳。
有关如何解决此问题的任何建议?即使点击了DropdownButton,有没有办法使键盘保持向上状态?
答案 0 :(得分:0)
最后找到了解决方案。需要将AlertDialog包装在SingleChildScrollView中。这将在屏幕顶部打开AlertDialog,并且在键盘打开/关闭时不会移动它。它还可以确保如果内容太长(垂直),它可以在键盘下滑动,并且用户可以使用滚动手势查看/与隐藏的内容进行交互。
import pandas as pd
steps = (145, 154, 157)
df = pd.read_fwf('path.dat', header=None)
for step in steps:
# select every 'step' rows
a = df[step - 1::step]
print(sum(a[1]), sum(a[2]), sum(a[3]))