我正在尝试在右侧的CardItem中使用选择器。选取器在右侧正确显示,但其值与左侧对齐(下图)。为什么会发生?
<CardItem cardBody>
<Left>
<Entypo name="address" />
<Text>State:</Text>
</Left>
<Right>
<Item>
<Picker
mode="dropdown"
iosHeader="Select State"
placeholder="States"
iosIcon={<Icon name="arrow-down" />}
selectedValue={CurrentState}
textStyle={{ color: '#C0C0C0' }}
onValueChange={(text) => this.onChangeText(text, 'CurrentState')}
>
{Object.keys(localStates).map((key) => {
return (
<Picker.Item
label={localStates[key]}
value={key}
key={key}
/>
);
})}
</Picker>
</Item>
</Right>
</CardItem>
localStates
只是具有状态的键值const。
答案 0 :(得分:0)
您可以尝试吗?
df1 <- structure(list(Item = c(1L, 1L), SubItem = c("1A", "1B"), Value = c("A",
"B"), Count = 3:2), class = "data.frame", row.names = c(NA, -2L
))
df2 <- structure(list(Value = c("A", "B", "C", "D", "E", "F")),
class = "data.frame", row.names = c(NA,
-6L))
答案 1 :(得分:0)
在处理RTL布局时,我遇到了类似的问题。将以下样式添加到res / values / styles.xml文件。这样可以在您的应用程序和苹果中对齐选择器项目,但在全球范围内希望这会有所启发
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!--
... existing styles
--->
<item name="android:spinnerItemStyle">@style/SpinnerItem</item>
<item name="android:spinnerDropDownItemStyle">@style/SpinnerDropDownItem</item>
</style>
然后在下面定义您的样式
<style name="SpinnerItem" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:textAlignment">gravity</item>
<item name="android:gravity">right</item>
</style>
<style name="SpinnerDropDownItem" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:textAlignment">gravity</item>
<item name="android:gravity">right</item>
<item name="android:padding">10dp</item>
</style>
如果要基于RTL布局(例如阿拉伯语)对齐,请使用以下代码
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!--
... existing styles
--->
<item name="android:spinnerItemStyle">@style/SpinnerItem</item>
<item name="android:spinnerDropDownItemStyle">@style/SpinnerDropDownItem</item>
</style>
然后在下面定义您的样式
<style name="SpinnerItem" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:textAlignment">gravity</item>
<item name="android:gravity">start</item>
</style>
<style name="SpinnerDropDownItem" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:textAlignment">gravity</item>
<item name="android:gravity">start</item>
<item name="android:padding">10dp</item>
</style>