HTML复选框的Andr​​oid的WebView [英] Html Checkbox in android webview

问题描述

我想知道： -

在我的项目，我使用的HTML内容和android的web视图显示它们。和我使用的Eclipse IDE。这是微小的code。

 ＆LT;表格名称= \\FRM \\＆gt;中+
                                                ＆LT;输入类型= \\复选框\\NAME = \\第一\\价值= \\某某\\＆GT;＆XYZ LT; BR＆gt;中+
                                                ＆LT;输入类型= \\复选框\\NAME = \\第一\\价值= \\ABC \\＆GT; ABC＆LT; BR＆gt;中+
                                               ＆LT; /形式为GT;
 

我的问题是我如何能得到复选框的状态。其选中或取消选中。

或如何能赶上状态我的Java code。

UPD： -

 公共字符串的html =＆LT;表格名称= \\FRM \\＆gt;中+
                                                    ＆LT;输入类型= \\复选框\\NAME = \\第一\\价值= \\某某\\＆GT;为＆lt; BR＆gt;中+
                                                    ＆LT;输入类型= \\复选框\\NAME = \\第二个\\价值= \\ZYX \\＆GT;为＆lt; BR＆gt;中+
                                                    ＆LT;输入类型= \\按钮\\的onclick = \\callDoSomething（）\\＆GT;＆LT; BR＆gt;中+
                                                    ＆LT; /形式为GT; +
                                                    ＆LT;脚本类型= \\文/ JavaScript的\\＆gt;中+
                                                    功能callDoSomething（）{+
                                                    VAR theName = document.frm.First.value;+
                                                    警报（'theName'）+
                                                    }+
                                                    ＆所述; /脚本＆gt;中;
 

解决方案

首先，无论你的复选框被命名为第一次，你应该命名第二个二。如果你想通过值来搜索复选框 - 只需添加一个简单的JS的for循环

假设你想从你的Andr​​oid code的结果（而不是JS事件就像点击一个按钮），这里是你如何获取Java布尔值你的名字复选框：

  //假设你的活动MyActivity，目标复选框名称
//在targetCheckboxName var和web视图具有文档
//已装
对象JSI =新的对象（）{
    @JavascriptInterface
    公共字符串reportCheckboxState（字符串名称，布尔器isChecked）{
        新AlertDialog.Builder（MyActivity.this）.setMessage（名称+就是+
                。器isChecked）.create（）显示（）;
    }
};
webView.addJavascriptInterface（JSI，注入）;
webView.loadUrl（
    的javascript：injection.reportCheckboxState（FRM。+ targetCheckboxName +
    .name和FRM。 + targetCheckboxName +.checked）;
）;
 

但实际上，这是一个非常简单的一招。通过意见的问题来看，你应该对JavaScript和<读了href=\"http://developer.android.com/reference/android/webkit/WebView.html#addJavascriptInterface%28java.lang.Object,%20java.lang.String%29\"相对=nofollow> WebView.addJavaScriptInterface（）

I want to know:-

In my project i am using html content and displaying them in android webview. and i am using eclipse ide. this is tiny code.

"<form name =\"frm\">"+
                                                "<input type=\"checkbox\" name =\"First\" value =\"xyz\">xyz<br>"+
                                                "<input type=\"checkbox\" name =\"First\" value =\"abc\">abc<br>"+ 
                                               "</form>" 

my question is how can i get check box state .its checked or unchecked.

or how can i catch the state in my java code.

UPD:-

 public String html =  "<form name =\"frm\">"+
                                                    "<input type=\"checkbox\" name =\"First\" value =\"xyz\">as<br>"+
                                                    "<input type=\"checkbox\" name =\"Second\" value =\"zyx\">as<br>"+ 
                                                    "<input type =\"button\" onclick =\"callDoSomething()\"><br>"+
                                                    "</form>" +


                                                    "<script type=\"text/javascript\">"+
                                                    "function callDoSomething() {"+
                                                    " var theName = document.frm.First.value;"+
                                                    "alert('theName ')"+
                                                    "}"+
                                                    "</script>";

解决方案

First, both of your checkboxes are named "First", you should probably name second one "Second". If you want to search checkboxes by value - just add a simple js for loop.

Assuming you want to get the results from your Android code (as opposed to JS event like clicking a button), here's how you get Java boolean value for you checkbox by name:

// assuming your activity is MyActivity, target checkbox name
// is in the targetCheckboxName var and webView has the document
// loaded already
Object jsi = new Object() {
    @JavascriptInterface
    public String reportCheckboxState(String name, boolean isChecked) {
        new AlertDialog.Builder(MyActivity.this).setMessage(name + " is " +
                isChecked).create().show();
    }
};
webView.addJavascriptInterface(jsi, "injection");
webView.loadUrl(
    "javascript:injection.reportCheckboxState(frm." + targetCheckboxName +
    ".name, frm." + targetCheckboxName + ".checked);"
);

But really, it's a very simple trick. Judging by comments to the question, you should probably read up on JavaScript and WebView.addJavaScriptInterface()

这篇关于HTML复选框的Andr​​oid的WebView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！