Android WebViews
這一節演示如何嵌入在較大型的 Android 應用程式內的科爾多瓦啟用 web 視圖元件。這些元件可以如何與對方溝通的詳細資訊,請參閱應用程式外掛程式。
如果你熟悉 Android,你應首先熟悉 Android 平臺指南和之前你嘗試更不尋常發展嵌入 web 視圖的選項,安裝了最新 Android sdk。 從開始科爾多瓦 1.9,Android 平臺依靠 CordovaWebView
元件,生成遺留下來 CordovaActivity
預日期 1.9 版本的元件。
要按照這些說明進行操作,請確保您有最新的科爾多瓦分佈。從cordova.apache.org下載和解壓縮其 android 系統的套裝軟體。
導航到 Android 包
/framework
目錄並運行ant jar
。它創建了科爾多瓦.jar
檔中,形成了作為/framework/cordova-x.x.x.jar
.複製
.jar
到 Android 專案檔案/libs
目錄。將以下內容添加到應用程式的
/res/xml/main.xml
檔中,與layout_height
、layout_width
和id
修改,以適合應用程式:<org.apache.cordova.CordovaWebView
android:id="@+id/tutorialView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
修改活動,使它實現了
CordovaInterface
。 它應實施的包括的方法。 您可能希望將它們從複製/framework/src/org/apache/cordova/CordovaActivity.java
,或其他執行他們自己。 下面的代碼片段顯示了一個基本的應用程式依賴于介面。 請注意如何引用的視圖 id 匹配id
在上面所示的 XML 片段中指定的屬性: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());
}
如果應用程式需要使用相機,實現以下內容:
@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);
}
}
最後,請記住,添加執行緒池,否則外掛程式有沒有線程在其上運行:
@Override
public ExecutorService getThreadPool() {
return threadPool;
}
將應用程式的 HTML 和 JavaScript 檔案複製到 Android 專案
/assets/www
目錄。複製
config.xml
檔從/framework/res/xml
到專案中的/res/xml
目錄。