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am 7c3e0dcc: am b5261bfe: am 36c14ef8: am 488c81ae: docs: add note about javascript interface to 4.2 overview

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* commit '7c3e0dcc7d395430e72b6786b715a530d8b5db4d':
  docs: add note about javascript interface to 4.2 overview
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Scott Main
2013-02-20 16:53:10 -08:00
committed by Android Git Automerger
parent bedf5b35eb 7c3e0dcc7d
commit 09ee121c27
2 changed files with 16 additions and 2 deletions
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14
docs/html/about/versions/android-4.2.jd
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@ -111,6 +111,20 @@ android:targetSdkVersion}</a> and <a href="{@docRoot}guide/topics/manifest/uses-
android:minSdkVersion}</a> is lower than 17, your app is not able to modify the settings that have
moved to {@link android.provider.Settings.Global} when running on Android 4.2 and higher.</p>
</li>
<li>If your app uses {@link android.webkit.WebView}, Android 4.2 adds an additional layer of
security so you can more safely <b>bind JavaScript to your
Android code</b>. If you set your
<a href="{@docRoot}guide/topics/manifest/uses-sdk-element.html#target">{@code targetSdkVersion}</a>
to 17 or higher, you must now add the {@code @JavascriptInterface} annotation to any method that you
want available to your JavaScript (the method must also be public). If you do not provide the
annotation, the method is not accessible by a web page in your {@link android.webkit.WebView}
when running on Android 4.2 or higher. If you set the
<a href="{@docRoot}guide/topics/manifest/uses-sdk-element.html#target">{@code targetSdkVersion}</a>
to 16 or lower, the annotation is not required, but we recommend that you update your target version
and add the annotation for additional security.
<p>Read more about <a href="{@docRoot}guide/webapps/webview.html#BindingJavaScript">binding
JavaScript code to Android code</a>.</p></li>
</ul>

4
docs/html/guide/webapps/webview.jd
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@ -178,8 +178,8 @@ public class WebAppInterface {
href="{@docRoot}guide/topics/manifest/uses-sdk-element.html#target">{@code targetSdkVersion}</a>
to 17 or higher, <strong>you
must add the {@code &#64;JavascriptInterface} annotation</strong> to any method that you want
available your web page code (the method must also be public). If you do not provide the
annotation, then the method will not accessible by your web page when running on Android 4.2 or
available to your JavaScript (the method must also be public). If you do not provide the
annotation, the method is not accessible by your web page when running on Android 4.2 or
higher.</p>
<p>In this example, the {@code WebAppInterface} class allows the web page to create a {@link