我目前正在为Android制作一个hello world类型的Phonegap应用程序,其中我从本机android代码调用javascript函数来设置我的应用程序中的一个段落的文本。
我有一个javascript函数,我在我的应用程序的html中定义,我想在应用程序加载后从我的活动中调用它。该函数只是在我的应用程序中设置段落的文本。我无法让它发挥作用。
这是我的java活动代码:
public class MyPhoneGapActivity extends DroidGap {
public DroidGap c;
public LoadInfo info;
@SuppressLint("SetJavaScriptEnabled")
@JavascriptInterface
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.init();
c = this;
appView.getSettings().setJavaScriptEnabled(true);
appView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
appView.loadUrl("file:///android_asset/www/index.html");
appView.setWebViewClient(new WebViewClient() {
public void onPageFinished(WebView view, String url) {
MyPhoneGapActivity.this.runOnUiThread(new Runnable() {
public void run() {
c.sendJavascript("javascript:getMassTimes()");
}
});
}
});
}
}
这是我的javascript和html代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport"
content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title>Ionic Seed App</title>
<link href="lib/css/ionic.css" rel="stylesheet">
<link href="css/app.css" rel="stylesheet">
<link href="lib/css/mycss.css" rel="stylesheet">
<script src="lib/js/ionic.js"></script>
<script src="lib/js/angular/angular.js"></script>
<script src="lib/js/angular/angular-animate.js"></script>
<script src="lib/js/angular/angular-sanitize.js"></script>
<script src="lib/js/angular-ui/angular-ui-router.js"></script>
<script src="lib/js/ionic-angular.js"></script>
<script src="js/app.js"></script>
<script src="js/services.js"></script>
<script src="js/controllers.js"></script>
<script src="http://code.jquery.com/jquery-2.1.0.js"></script>
</head>
<body ng-app="myApp">
<script type="text/javascript">
function getMassTimes() {
document.getElementById("massTimes").textContent = "This is some text";
}
</script>
<div>
<header-bar title="Saint David the King"
class="bar bar-header bar-energized">
<h1 class="title">Saint David the King</h1>
</header-bar>
<br>
<content scroll="true" has-header="true" width="100%" height="100%"
id="content"> <img alt="Saint David the King"
src="file:///android_asset/www/img/saintdavidthekingbackground2.png"
width="100%" /> <br>
<p id="massTimes">
</p>
</content>
</div>
</body>
</html>
我做错了吗? 我见过这些网站:
Resolved - Call javascript function from Java
How to call javascript function from java code
https://groups.google.com/forum/?fromgroups=#!topic/android-developers/1o9PgfmyRd8
http://www.jumpbyte.com/2012/phonegap-native-to-javascript/
Javascript calls from Android using PhoneGap
how to call javascript function from android using phonegap plugin
我已经尝试过他们对他们的所作所为,但我无法让它发挥作用。
任何帮助表示赞赏!
答案 0 :(得分:2)
将c.sendJavascript("javascript:getMassTimes()");
替换为
myBrowser.loadUrl("javascript:getMassTimes()");
。
这适用于我的问题。
如果要将String从活动传递给javascript使用
String msgToSend = "Hello World!"; myBrowser.loadUrl("javascript:callFromActivity(\""+msgToSend+"\")");