Android 从Webview收集数据
我只想问一个简单的问题 我下载了这个html页面(及其文件),并将其放置在assets文件夹中,并将其加载到webview中,在提交网页时发送文本字段中填写的数据,我的问题是我是否可以检测到提交点击,如果可以,我是否可以检索发送的数据,以便在没有internet的情况下将其保存在sqlite中,并在连接应用程序时发送这些数据Android 从Webview收集数据,android,webview,Android,Webview,我只想问一个简单的问题 我下载了这个html页面(及其文件),并将其放置在assets文件夹中,并将其加载到webview中,在提交网页时发送文本字段中填写的数据,我的问题是我是否可以检测到提交点击,如果可以,我是否可以检索发送的数据,以便在没有internet的情况下将其保存在sqlite中,并在连接应用程序时发送这些数据 您好,以下是您可以做的!希望这有意义 考虑到您的资产文件夹中有一个html文件,如 /资产/mypage.html 里面有一些js,就像这样 <!DOCTYPE ht
您好,以下是您可以做的!希望这有意义 考虑到您的资产文件夹中有一个html文件,如 /资产/mypage.html 里面有一些js,就像这样
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width; user-scalable=0;" />
<title>My HTML</title>
</head>
<body>
<h1>MyHTML</h1>
<p id="mytext">Hello!</p>
<input type="button" value="Say hello" onClick="showAndroidToast('Hello Android!')" />
<input type="button" value="Open Dialog" onClick="openAndroidDialog()" />
<script language="javascript">
function showAndroidToast(toast) {
AndroidFunction.showToast(toast);
}
function openAndroidDialog() {
AndroidFunction.openAndroidDialog();
}
function callFromActivity(msg){
document.getElementById("mytext").innerHTML = msg;
}
</script>
</body>
</html>
package com.rizwan.AndroidHTML;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class AndroidHTMLActivity extends Activity {
WebView myBrowser;
EditText edtTxtMsg;
Button btnSendMsg;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myBrowser = (WebView)findViewById(R.id.mybrowser);
final MyJavaScriptInterface myJavaScriptInterface
= new MyJavaScriptInterface(this);
myBrowser.addJavascriptInterface(myJavaScriptInterface, "AndroidFunction");
myBrowser.getSettings().setJavaScriptEnabled(true);
myBrowser.loadUrl("file:///android_asset/mypage.html");
edtTxtMsg = (EditText)findViewById(R.id.msg);
btnSendMsg = (Button)findViewById(R.id.sendmsg);
btnSendMsg.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String msgToSend = edtTxtMsg.getText().toString();
myBrowser.loadUrl("javascript:callFromActivity(\""+msgToSend+"\")");
}});
}
public class MyJavaScriptInterface {
Context mContext;
MyJavaScriptInterface(Context c) {
mContext = c;
}
public void showToast(String toast){
Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
}
public void openAndroidDialog(){
AlertDialog.Builder myDialog
= new AlertDialog.Builder(AndroidHTMLActivity.this);
myDialog.setTitle("DANGER!");
myDialog.setMessage("You can do what you want!");
myDialog.setPositiveButton("ON", null);
myDialog.show();
}
}
}
这就是你能做的!希望这有意义 考虑到您的资产文件夹中有一个html文件,如 /资产/mypage.html 里面有一些js,就像这样
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width; user-scalable=0;" />
<title>My HTML</title>
</head>
<body>
<h1>MyHTML</h1>
<p id="mytext">Hello!</p>
<input type="button" value="Say hello" onClick="showAndroidToast('Hello Android!')" />
<input type="button" value="Open Dialog" onClick="openAndroidDialog()" />
<script language="javascript">
function showAndroidToast(toast) {
AndroidFunction.showToast(toast);
}
function openAndroidDialog() {
AndroidFunction.openAndroidDialog();
}
function callFromActivity(msg){
document.getElementById("mytext").innerHTML = msg;
}
</script>
</body>
</html>
package com.rizwan.AndroidHTML;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class AndroidHTMLActivity extends Activity {
WebView myBrowser;
EditText edtTxtMsg;
Button btnSendMsg;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myBrowser = (WebView)findViewById(R.id.mybrowser);
final MyJavaScriptInterface myJavaScriptInterface
= new MyJavaScriptInterface(this);
myBrowser.addJavascriptInterface(myJavaScriptInterface, "AndroidFunction");
myBrowser.getSettings().setJavaScriptEnabled(true);
myBrowser.loadUrl("file:///android_asset/mypage.html");
edtTxtMsg = (EditText)findViewById(R.id.msg);
btnSendMsg = (Button)findViewById(R.id.sendmsg);
btnSendMsg.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String msgToSend = edtTxtMsg.getText().toString();
myBrowser.loadUrl("javascript:callFromActivity(\""+msgToSend+"\")");
}});
}
public class MyJavaScriptInterface {
Context mContext;
MyJavaScriptInterface(Context c) {
mContext = c;
}
public void showToast(String toast){
Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
}
public void openAndroidDialog(){
AlertDialog.Builder myDialog
= new AlertDialog.Builder(AndroidHTMLActivity.this);
myDialog.setTitle("DANGER!");
myDialog.setMessage("You can do what you want!");
myDialog.setPositiveButton("ON", null);
myDialog.show();
}
}
}
一个带有js函数的html页面,一个带有js函数监听器的java类接口,附加在web视图中,还有一些java按钮可以触发,这会有所帮助!lemme发布了一个例子,一个带有js函数的html页面,一个带有js函数监听器的java类接口,附加在您的web视图中,以及一些java按钮来触发这些都会有所帮助!让我举个例子