label

问题 how to change the label color for textInput when it is focused. I am using react-native-paper by default it is violet in color is there any prop like labelColor to do the same The label color of TextInput needs to be changed when the textInput is clicked to edit. PLease see the following code for details import React, {Component} from 'react' import { View, StyleSheet } from 'react-native' import { Text, TextInput, Card, Button } from 'react-native-paper' class login extends Component { state

问题 This question already has an answer here : Subscripts and superscripts “-” or “+” with ggplot2 axis labels? (ionic chemical notation) (1 answer) Closed 4 months ago . I need to plot some data and one of the plot has to have the sulphate formula (SO42-) in the labels. I am using this code a=c(1,2,3,4,5) b=c(1,2,3,4,5) dd=data.frame(a,b) G<-ggplot(dd)+ geom_line(x=a, y=b, color="blue")+ labs(x="Depth (m)", y=expression("nss SO"[4]^{2-}"(ppb)")) G And, of course, it doesn't work: either the - is

问题 This question already has an answer here : Subscripts and superscripts “-” or “+” with ggplot2 axis labels? (ionic chemical notation) (1 answer) Closed 4 months ago . I need to plot some data and one of the plot has to have the sulphate formula (SO42-) in the labels. I am using this code a=c(1,2,3,4,5) b=c(1,2,3,4,5) dd=data.frame(a,b) G<-ggplot(dd)+ geom_line(x=a, y=b, color="blue")+ labs(x="Depth (m)", y=expression("nss SO"[4]^{2-}"(ppb)")) G And, of course, it doesn't work: either the - is

问题 How do I dynamically resize the a label or button, in particular, the text_size and height, depending on the amount of text, at run-time? I am aware that this question has already been answered in one way with this question: Dynamically resizing a Label within a Scrollview? And I reflect that example in part of my code. The problem is dynamically resizing the labels and buttons at run-time. Using, for example: btn = Button(text_size=(self.width, self.height), text='blah blah') ...and so on,

问题 I'm drawing line charts with d3 and it all works fine. However, I have to leave enough margin on the left of the chart area to fit whatever I think might be the widest y-axis text label. I'd like to adjust this space for each chart, depending on the widest label. Initially I thought I could find the maximum y value, create a hidden text object, work out how wide that is, and use that value for the left margin when creating the chart. A bit nasty, but it gets me a value. However, if the

问题 I'm drawing line charts with d3 and it all works fine. However, I have to leave enough margin on the left of the chart area to fit whatever I think might be the widest y-axis text label. I'd like to adjust this space for each chart, depending on the widest label. Initially I thought I could find the maximum y value, create a hidden text object, work out how wide that is, and use that value for the left margin when creating the chart. A bit nasty, but it gets me a value. However, if the

问题 I'm trying to use a single Label to display one of the two data fields alternately in Xamarin Forms. Only Label 1 Displaying the binding field (Contact_Name), while second Label which I am trying to use a variable "DisplayField" is not displaying either 'Contact_Address' or 'Contact_eMail' . Question posted before and Another user tried to help but it didn't work! Model Class public class Contacts { [PrimaryKey][Autoincrement] public int Contact_ID { get; set; } public string Contact_Name {

问题 I want to have tooltip also on the xAxis labels. I managed to do it using the events in the highcharts, but the tooltip (with text "Custom tooltip") is always displayed under the label, and I need it to be over the label (which is the small red square). This is the code for highcharts: Highcharts.chart("ch", { chart: { zoomType: "x", type: "line", // line width: 1100, // 1100 plotAreaWidth: 1100, // 1100 plotAreaHeight: 400, // 400 events: { load: function () { var chart = this, xAxis = chart

问题 I want to have tooltip also on the xAxis labels. I managed to do it using the events in the highcharts, but the tooltip (with text "Custom tooltip") is always displayed under the label, and I need it to be over the label (which is the small red square). This is the code for highcharts: Highcharts.chart("ch", { chart: { zoomType: "x", type: "line", // line width: 1100, // 1100 plotAreaWidth: 1100, // 1100 plotAreaHeight: 400, // 400 events: { load: function () { var chart = this, xAxis = chart

问题 I'm trying to use a single Label to display one of the two data fields alternately in Xamarin Forms. Only Label 1 Display the binding field and second Label which I am trying to use a variable "DisplayField" is not displaying either 'Contact_Address' or 'Contact_eMail' Model class public class Contacts { [PrimaryKey][Autoincrement] public int Contact_ID { get; set; } public string Contact_Name { get; set; } public string Contact_Address { get; set; } public string Contact_eMail { get; set; }