Vaadin文本字段，在iOS上仅默认为数字键盘

您知道如何设置

TextField

，以显示数字键盘而不是常规键盘（输入元素中的cfr.a类型属性“number”）？用户发现总是要为某些字段切换到数字键盘很烦人（这些字段每天必须填写几百次！）。大多数相关帖子都是关于将输入限制在数字上，这不是问题

谢谢

---

威廉·瓦丁：

只需使用编号字段

数字字段：移动浏览器显示专用输入控件。可以选择显示值的减少和增加按钮

NumberField dollarField=新的NumberField（“美元”）

参见示例

对于本机iOS:

只需将键盘类型设置为NumberPad：

self.someTextField.keyboardType=UIKeyboardType.NumberPad

有关所有键盘类型，请参见。
有关Vaadin:

只需使用编号字段

数字字段：移动浏览器显示专用输入控件。可以选择显示值的减少和增加按钮

NumberField dollarField=新的NumberField（“美元”）

参见示例

对于本机iOS:

只需将键盘类型设置为NumberPad：

self.someTextField.keyboardType=UIKeyboardType.NumberPad

有关所有键盘类型，请参见。
关于这一点，github存在一个已关闭的问题，但我不确定上面提到的插槽现在应该如何工作。如果现在没有下面的解决方法，这已经是可能的，请随时让我知道

据我所知，将属性
type=“number”
添加到
中不起作用，因为该属性应该位于中的实际
元素上

有一个解决方法可以做到这一点：

关于这一点，有一个封闭的github问题，但我不确定上面提到的时间档现在应该如何工作。如果现在没有下面的解决方法，这已经是可能的，请随时让我知道

据我所知，将属性
type=“number”
添加到
中不起作用，因为该属性应该位于中的实际
元素上

有一个解决方法可以做到这一点：

我在GitHub项目的
原型应用程序示例中找到了一个轻量级的解决方案，取代了内置组件/附加组件

总之（仅使用相关部分）：

NumberTypeField.java：

package com.example;

import com.vaadin.data.util.converter.StringToIntegerConverter;
import com.vaadin.ui.TextField;

/**
 * A field for entering numbers. On touch devices, a numeric keyboard is shown
 * instead of the normal one.
 */
public class NumberTypeField extends TextField {
    public NumberTypeField() {
        // Mark the field as numeric.
        // This affects the virtual keyboard shown on mobile devices.
        AttributeExtension ae = new AttributeExtension();
        ae.extend(this);
        ae.setAttribute("type", "number");
    }

    public NumberTypeField(String caption) {
        this();
        setCaption(caption);
    }
}

package com.example;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.ui.TextField;

/**
 * A JavaScript extension for adding arbitrary HTML attributes for components.
 */
@JavaScript("attribute_extension_connector.js")
public class AttributeExtension extends AbstractJavaScriptExtension {

private static final long serialVersionUID = 1L;

public void extend(TextField target) {
    super.extend(target);
}

@Override
protected AttributeExtensionState getState() {
    return (AttributeExtensionState) super.getState();
}

public void setAttribute(String attribute, String value) {
    getState().attributes.put(attribute, value);
}

package com.example;

import com.vaadin.shared.JavaScriptExtensionState;

import java.util.HashMap;

/**
 * Shared state class for {@link AttributeExtension} communication from server
 * to client.
 */
public class AttributeExtensionState extends JavaScriptExtensionState {

    private static final long serialVersionUID = 1L;

    public HashMap<String, String> attributes = new HashMap<String, String>();
}

AttributeExtension.java：

package com.example;

import com.vaadin.data.util.converter.StringToIntegerConverter;
import com.vaadin.ui.TextField;

/**
 * A field for entering numbers. On touch devices, a numeric keyboard is shown
 * instead of the normal one.
 */
public class NumberTypeField extends TextField {
    public NumberTypeField() {
        // Mark the field as numeric.
        // This affects the virtual keyboard shown on mobile devices.
        AttributeExtension ae = new AttributeExtension();
        ae.extend(this);
        ae.setAttribute("type", "number");
    }

    public NumberTypeField(String caption) {
        this();
        setCaption(caption);
    }
}

package com.example;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.ui.TextField;

/**
 * A JavaScript extension for adding arbitrary HTML attributes for components.
 */
@JavaScript("attribute_extension_connector.js")
public class AttributeExtension extends AbstractJavaScriptExtension {

private static final long serialVersionUID = 1L;

public void extend(TextField target) {
    super.extend(target);
}

@Override
protected AttributeExtensionState getState() {
    return (AttributeExtensionState) super.getState();
}

public void setAttribute(String attribute, String value) {
    getState().attributes.put(attribute, value);
}

package com.example;

import com.vaadin.shared.JavaScriptExtensionState;

import java.util.HashMap;

/**
 * Shared state class for {@link AttributeExtension} communication from server
 * to client.
 */
public class AttributeExtensionState extends JavaScriptExtensionState {

    private static final long serialVersionUID = 1L;

    public HashMap<String, String> attributes = new HashMap<String, String>();
}

AttributeExtensionState.java：

package com.example;

import com.vaadin.data.util.converter.StringToIntegerConverter;
import com.vaadin.ui.TextField;

/**
 * A field for entering numbers. On touch devices, a numeric keyboard is shown
 * instead of the normal one.
 */
public class NumberTypeField extends TextField {
    public NumberTypeField() {
        // Mark the field as numeric.
        // This affects the virtual keyboard shown on mobile devices.
        AttributeExtension ae = new AttributeExtension();
        ae.extend(this);
        ae.setAttribute("type", "number");
    }

    public NumberTypeField(String caption) {
        this();
        setCaption(caption);
    }
}

package com.example;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.ui.TextField;

/**
 * A JavaScript extension for adding arbitrary HTML attributes for components.
 */
@JavaScript("attribute_extension_connector.js")
public class AttributeExtension extends AbstractJavaScriptExtension {

private static final long serialVersionUID = 1L;

public void extend(TextField target) {
    super.extend(target);
}

@Override
protected AttributeExtensionState getState() {
    return (AttributeExtensionState) super.getState();
}

public void setAttribute(String attribute, String value) {
    getState().attributes.put(attribute, value);
}

package com.example;

import com.vaadin.shared.JavaScriptExtensionState;

import java.util.HashMap;

/**
 * Shared state class for {@link AttributeExtension} communication from server
 * to client.
 */
public class AttributeExtensionState extends JavaScriptExtensionState {

    private static final long serialVersionUID = 1L;

    public HashMap<String, String> attributes = new HashMap<String, String>();
}

我在GitHub项目的
原型应用程序示例中找到了一个轻量级的解决方案，取代了内置组件/附加组件

总之（仅使用相关部分）：

NumberTypeField.java：

package com.example;

import com.vaadin.data.util.converter.StringToIntegerConverter;
import com.vaadin.ui.TextField;

/**
 * A field for entering numbers. On touch devices, a numeric keyboard is shown
 * instead of the normal one.
 */
public class NumberTypeField extends TextField {
    public NumberTypeField() {
        // Mark the field as numeric.
        // This affects the virtual keyboard shown on mobile devices.
        AttributeExtension ae = new AttributeExtension();
        ae.extend(this);
        ae.setAttribute("type", "number");
    }

    public NumberTypeField(String caption) {
        this();
        setCaption(caption);
    }
}

package com.example;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.ui.TextField;

/**
 * A JavaScript extension for adding arbitrary HTML attributes for components.
 */
@JavaScript("attribute_extension_connector.js")
public class AttributeExtension extends AbstractJavaScriptExtension {

private static final long serialVersionUID = 1L;

public void extend(TextField target) {
    super.extend(target);
}

@Override
protected AttributeExtensionState getState() {
    return (AttributeExtensionState) super.getState();
}

public void setAttribute(String attribute, String value) {
    getState().attributes.put(attribute, value);
}

package com.example;

import com.vaadin.shared.JavaScriptExtensionState;

import java.util.HashMap;

/**
 * Shared state class for {@link AttributeExtension} communication from server
 * to client.
 */
public class AttributeExtensionState extends JavaScriptExtensionState {

    private static final long serialVersionUID = 1L;

    public HashMap<String, String> attributes = new HashMap<String, String>();
}

AttributeExtension.java：

package com.example;

import com.vaadin.data.util.converter.StringToIntegerConverter;
import com.vaadin.ui.TextField;

/**
 * A field for entering numbers. On touch devices, a numeric keyboard is shown
 * instead of the normal one.
 */
public class NumberTypeField extends TextField {
    public NumberTypeField() {
        // Mark the field as numeric.
        // This affects the virtual keyboard shown on mobile devices.
        AttributeExtension ae = new AttributeExtension();
        ae.extend(this);
        ae.setAttribute("type", "number");
    }

    public NumberTypeField(String caption) {
        this();
        setCaption(caption);
    }
}

package com.example;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.ui.TextField;

/**
 * A JavaScript extension for adding arbitrary HTML attributes for components.
 */
@JavaScript("attribute_extension_connector.js")
public class AttributeExtension extends AbstractJavaScriptExtension {

private static final long serialVersionUID = 1L;

public void extend(TextField target) {
    super.extend(target);
}

@Override
protected AttributeExtensionState getState() {
    return (AttributeExtensionState) super.getState();
}

public void setAttribute(String attribute, String value) {
    getState().attributes.put(attribute, value);
}

package com.example;

import com.vaadin.shared.JavaScriptExtensionState;

import java.util.HashMap;

/**
 * Shared state class for {@link AttributeExtension} communication from server
 * to client.
 */
public class AttributeExtensionState extends JavaScriptExtensionState {

    private static final long serialVersionUID = 1L;

    public HashMap<String, String> attributes = new HashMap<String, String>();
}

AttributeExtensionState.java：

package com.example;

import com.vaadin.data.util.converter.StringToIntegerConverter;
import com.vaadin.ui.TextField;

/**
 * A field for entering numbers. On touch devices, a numeric keyboard is shown
 * instead of the normal one.
 */
public class NumberTypeField extends TextField {
    public NumberTypeField() {
        // Mark the field as numeric.
        // This affects the virtual keyboard shown on mobile devices.
        AttributeExtension ae = new AttributeExtension();
        ae.extend(this);
        ae.setAttribute("type", "number");
    }

    public NumberTypeField(String caption) {
        this();
        setCaption(caption);
    }
}

package com.example;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.ui.TextField;

/**
 * A JavaScript extension for adding arbitrary HTML attributes for components.
 */
@JavaScript("attribute_extension_connector.js")
public class AttributeExtension extends AbstractJavaScriptExtension {

private static final long serialVersionUID = 1L;

public void extend(TextField target) {
    super.extend(target);
}

@Override
protected AttributeExtensionState getState() {
    return (AttributeExtensionState) super.getState();
}

public void setAttribute(String attribute, String value) {
    getState().attributes.put(attribute, value);
}

package com.example;

import com.vaadin.shared.JavaScriptExtensionState;

import java.util.HashMap;

/**
 * Shared state class for {@link AttributeExtension} communication from server
 * to client.
 */
public class AttributeExtensionState extends JavaScriptExtensionState {

    private static final long serialVersionUID = 1L;

    public HashMap<String, String> attributes = new HashMap<String, String>();
}

谢谢，我不知道这个插件。遗憾的是，它从编号中删除了前导的0（这些是通常以0开头的客户机ID编号）。我还无法确认（目标iPad上的）移动浏览器是否默认为数字键盘。谢谢，我不知道这个插件。遗憾的是，它从编号中删除了前导的0（这些是通常以0开头的客户机ID编号）。我还无法确认（目标iPad上的）移动浏览器是否默认为数字键盘。谢谢。是的，我还不清楚重新设置输入计划的结果是什么——所有github帖子都有点混乱，找不到具体的结果特性。我很欣赏这段代码，但对我来说有点“黑客”。也许我会制作自己的小部件或编辑
NumberField
，以满足我的需要。谢谢。是的，我还不清楚重新设置输入计划的结果是什么——所有github帖子都有点混乱，找不到具体的结果特性。我很欣赏这段代码，但对我来说有点“黑客”。也许我会制作自己的小部件或编辑
NumberField
，以满足我的需要。