Android WebViews

本指南说明如何将嵌入在较大型的 Android 应用程式内的Cordova启用 web 视图元件。这些元件可以如何与对方沟通的详细资讯，请参阅应用程式外挂程式。

如果你熟悉 Android，你应首先熟悉 Android 平台指南和之前你尝试更不寻常发展嵌入 web 视图的选项，安装了最新 Android sdk。从开始Cordova 1.9，Android 平台依靠 CordovaWebView 元件，生成遗留下来 CordovaActivity 预日期 1.9 版本的元件。

要按照这些说明进行操作，请确保您有最新的Cordova分布。从cordova.apache.org下载和解压缩其 android 系统的套装软体。
导航到 Android 包 /framework 目录并运行 ant jar 。它创建了Cordova .jar 档中，形成了作为/framework/cordova-x.x.x.jar.
复制 .jar 到 Android 专案档案 /libs 目录。

将以下内容添加到应用程式的 /res/xml/main.xml 档中，与 layout_height 、 layout_width 和 id 修改，以适合应用程式：

<org.apache.cordova.CordovaWebView
    android:id="@+id/tutorialView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

修改活动，使它实现了 CordovaInterface 。它应实施的包括的方法。您可能希望将它们从复制 /framework/src/org/apache/cordova/CordovaActivity.java ，或其他执行他们自己。下面的代码片段显示了一个基本的应用程式依赖于介面。请注意如何引用的视图 id 匹配 id 在上面所示的 XML 片段中指定的属性：

public class CordovaViewTestActivity extends Activity implements CordovaInterface {
    CordovaWebView cwv;
    /* Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        cwv = (CordovaWebView) findViewById(R.id.tutorialView);
        Config.init(this);
        cwv.loadUrl(Config.getStartUrl());
    }

如果应用程式需要使用相机，实现以下内容：

@Override
public void setActivityResultCallback(CordovaPlugin plugin) {
    this.activityResultCallback = plugin;
}
/**
 * Launch an activity for which you would like a result when it finished. When this activity exits,
 * your onActivityResult() method is called.
 *
 * @param command           The command object
 * @param intent            The intent to start
 * @param requestCode       The request code that is passed to callback to identify the activity
 */
public void startActivityForResult(CordovaPlugin command, Intent intent, int requestCode) {
    this.activityResultCallback = command;
    this.activityResultKeepRunning = this.keepRunning;

    // If multitasking turned on, then disable it for activities that return results
    if (command != null) {
        this.keepRunning = false;
    }

    // Start activity
    super.startActivityForResult(intent, requestCode);
}   

@Override
/**
 * Called when an activity you launched exits, giving you the requestCode you started it with,
 * the resultCode it returned, and any additional data from it.
 *
 * @param requestCode       The request code originally supplied to startActivityForResult(),
 *                          allowing you to identify who this result came from.
 * @param resultCode        The integer result code returned by the child activity through its setResult().
 * @param data              An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
 */
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    CordovaPlugin callback = this.activityResultCallback;
    if (callback != null) {
        callback.onActivityResult(requestCode, resultCode, intent);
    }
}

最后，请记住，添加执行绪池，否则外挂程式有没有线程在其上运行：
```
@Override
public ExecutorService getThreadPool() {
    return threadPool;
}
```
将应用程式的 HTML 和 JavaScript 档案复制到 Android 专案 /assets/www 目录。
复制 config.xml 档从 /framework/res/xml 到专案中的 /res/xml 目录。