是否可以将android选取器项目和所选项目居中?我到处搜索,尝试使用alignItems:'center'& justifyContent:'center',但是当我放置alignSelf时,项目仍然左对齐(在照片上可见):'center'选择器不再可见。有人有任何线索吗?
var REPORTS = [
{name: 'Report 1', id: 'r1'},
{name: 'Report 2', id: 'r2'},
{name: 'Report 3', id: 'r3'},
{name: 'Report 4', id: 'r4'},
{name: 'Report5', id: 'r5'},
{name: 'Report6', id: 'r6'}
];
...
<Picker style={styles.androidPicker} mode={'dropdown'}
selectedValue={this.state.report} itemStyle={styles.reports.iosPicker}
onValueChange={(reportId) => this.onReportChanged(reportId)}>
{REPORTS.map(function (reports) {
return <Picker.Item style={{alignSelf:'center'}} label={reports.name}
value={reports.id} key={reports.name + reports.id}/>;})} </Picker>
...
样式:
var styles = StyleSheet.create({
androidPicker: {
flex: 1,
color: '#6D6D6D',
backgroundColor: '#FFF',
marginBottom: 20,
height: 40,
alignItems:'center',
justifyContent:'center',
flexDirection: 'row'
}
})
以下是已关闭和已打开的选择器的快照:
提前致谢! :)
答案 0 :(得分:0)
你会尝试如下:
public static class VisualTreeHelperExtensions
{
public static T FindParent<T>(this DependencyObject child) where T : DependencyObject
{
while (true)
{
//get parent item
DependencyObject parentObject = VisualTreeHelper.GetParent(child);
//we've reached the end of the tree
if (parentObject == null) return null;
//check if the parent matches the type we're looking for
T parent = parentObject as T;
if (parent != null)
return parent;
child = parentObject;
}
}
}
答案 1 :(得分:0)
尝试:
androidPicker: {
color: '#6D6D6D',
backgroundColor: '#FFF',
marginBottom: 20,
height: 40,
alignSelf: 'center',
justifyContent:'center',
}
对我有用
答案 2 :(得分:0)
首先你需要设置useNativeAndroidPickerStyle={false}
,因为这将允许你使用一些样式道具,如inputAndroid和inputAndroidContainer等。然后你可以在这些样式中进行必要的样式设置。查看文档{{ 3}},你就会明白。