Javascript 从单独的类调用活动函数

我一直在学习android教程（found），试图让一个简单的web应用程序正常工作

我有一个名为

CalendarActivity

的活动，其中包含一个

WebView

。此

WebView

呈现

assets\www\

文件夹中的页面。我还有一个

CalendarInterface

，它保存了javascript从html页面调用的方法

---

我想做的是能够通过javascript调用活动的

finish（）

函数。但是，由于这只能从活动中调用-如何使用单独的接口类实现这一点？

以链接页面为例，您应该能够执行以下操作：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

现在，在活动中添加JS界面，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

在您的网页中，您可以通过单击按钮完成活动，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

函数finishActivity（）{
Android.finishActivity（）；
}

以链接页面为例，您应该能够执行以下操作：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

现在，在活动中添加JS界面，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

在您的网页中，您可以通过单击按钮完成活动，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

函数finishActivity（）{
Android.finishActivity（）；
}

以链接页面为例，您应该能够执行以下操作：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

现在，在活动中添加JS界面，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

在您的网页中，您可以通过单击按钮完成活动，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

函数finishActivity（）{
Android.finishActivity（）；
}

以链接页面为例，您应该能够执行以下操作：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

现在，在活动中添加JS界面，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

在您的网页中，您可以通过单击按钮完成活动，如下所示：

public class WebAppInterface {
    Activity mActivity;

    /** Instantiate the interface and set the activity */
    WebAppInterface(Activity activity) {
        mActivity = activity;
    }

    /** Finish activity from the web page */
    @JavascriptInterface
    public void finishActivity() {
        mActivity.finish();
    }
}

WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");

<input type="button" value="Finish the activity now" onClick="finishActivity()" />

<script type="text/javascript">
    function finishActivity() {
        Android.finishActivity();
    }
</script>

函数finishActivity（）{
Android.finishActivity（）；
}