Android 单击 webview 内的按钮 [英] Android clicking a button inside a webview
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问题描述
我正在尝试在 webview 中实现一个按钮，我正在使用以下代码:
I'm trying to implement a button inside a webview, I'm using the following code :
package com.example.tests;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.webkit.JavascriptInterface;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
@SuppressLint("SetJavaScriptEnabled")
public class Webview extends Activity {
private WebView browser;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
browser = (WebView)findViewById(R.id.webView1);
browser.getSettings().setJavaScriptEnabled(true);
browser.getSettings().setLoadsImagesAutomatically(true);
browser.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
browser.setWebViewClient(new MyBrowser());
browser.loadUrl("file:///android_asset/index.html");
}
private class MyBrowser extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
view.addJavascriptInterface(new Object()
{
@JavascriptInterface
public void performClick() throws Exception
{
Log.d("LOGIN::", "Clicked");
Toast.makeText(Webview.this, "Login clicked", Toast.LENGTH_LONG).show();
}
}, "login");
return true;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
至于 html 页面:
As for the html page :
<html>
<head>
<script language="javascript">
function js1()
{
document.loginform.method="post";
document.loginform.action = "https://example.com/chechlogin.asp";
}
</script>
</head>
<body>
<form name="loginform">
<input type="text" name="empcode" value="58686" /><br/>
<input type="password" name="emppassNTL" />
<input type="submit" name="submit" id="submit_id" onclick="btnLogin.performClick();" />
当点击按钮时，应该会显示一条吐司消息，但它不起作用，请问有什么帮助吗?
When clicking on the button a toast message should be shown, well it's not working, any help please ?
推荐答案
更改
<input type="submit" name="submit" id="submit_id" onclick="btnLogin.performClick();" />
到
<input type="submit" name="submit" id="submit_id" onclick="login.performClick();" />
因为你的Interface名称是login而不是btnLogin
有关更多信息，请参阅这篇最佳帖子 Android webview JavaScript 界面
For more info see this best post Android webview JavaScript Interface
这篇关于Android 单击 webview 内的按钮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！
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