方法一：
*javascript in html：
<SCRIPTLANGUAGE="JavaScript">
function checkOrientation(){
alert(window.orientation);
};
window.addEventListener('onorientationchange' in window ? 'orientationchange' : 'resize', checkOrientation, false);
function print() {
window.location="print://print";
};
function setting() {
window.location="setting://setting";
};
</SCRIPT>
*java code：
public boolean shouldOverrideUrlLoading(WebView view, String url) {
AppUtils.LogD(url);
if (url.startsWith("mailto:")) {
MailTo mt = MailTo.parse(url);
Intent i = AppUtils.newEmailIntent(activity, mt.getTo(),
mt.getSubject(), mt.getBody(), mt.getCc());
activity.startActivity(i);
view.reload();
return true;
} else if (url.startsWith("print://print")) {
// show toast message for print button
Toast.makeText(activity, R.string.print_button_alert,
Toast.LENGTH_LONG).show();
return true;
} else if (url.startsWith("setting://setting")) {
// show setting dialog
((DetailViewControlerImpl) activity).openSettingsPage();
return true;
} else {
return false;
}
}
方法二：
javascript in html(mypage):
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML>
<HEAD>
<TITLE>Actuate Viewer</TITLE>
<script type="text/javascript">
function change() {
document.getElementById("changePhoto").src = "http://up.2cto.com/2012/0519/20120519094025145.png";
}
</script>
</HEAD>
<BODY>
<a onclick="window.mypage.clickOnAndroid()"> <img id="changePhoto"
src="http://up.2cto.com/2012/0519/20120519094025304.png" /><br> Click me! </a>
</BODY>
</HTML>
java code:
mWebView.addJavascriptInterface(new MyJavaScriptInterface(), "mypage");
final class MyJavaScriptInterface {
public MyJavaScriptInterface() {
}
public void clickOnAndroid() {
mHandler.post(new Runnable() {
@Override
public void run() {
mWebView.loadUrl("javascript:change()");
}
});
}
}
摘自 fhy_2008的专栏
