6

我已将 Cordova WebvView 作为组件嵌入到我的项目中，除了一件事外一切正常；当按下后退按钮时，我在 LogCat 上收到一个错误，上面写着“接收器未注册！” 我不认为我已经注册了接收器。这里还有一个 GitHub 上的示例项目。当我运行这个应用程序时，我也会遇到同样的错误。

我想要做的是，将 Cordova WebView 嵌入到我的 Android 项目中并运行一些 javascript 函数。

这是我的主要活动；

public class MainNativeViewController extends FragmentActivity implements CordovaInterface,
    JavaScriptListener {

FragmentTransaction transaction;
RelativeLayout childBrowser;
RelativeLayout dialogBox;
RelativeLayout emailComposer;

private ExecutorService threadPool;

CordovaWebViewFragment cordovaWebViewFragment;

public CordovaWebView cordovaWebView;

public LayoutInflater inflater;
CordovaPlugin mActivityResultCallback;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);

    setContentView(R.layout.fragment_container);

    overridePendingTransition(R.anim.fade_in, R.anim.fade_out);

    threadPool = Executors.newCachedThreadPool();

    cordovaWebView = SingleTonCordovaWebView.getCordovaWebView(this);
    cordovaWebView.loadUrl("file:///android_asset/www/invoke_native_view.html");

    FragmentManager manager = getSupportFragmentManager();

    ListFragment listFragment = new ListFragment();

    manager.beginTransaction().add(R.id.fragment_container, listFragment).commit();
}

@Override
public void showFragment(String fragmentName) {

    /*
     * This method is used to create and replace a fragment to the
     * container. according to name passed through here.
     */

    transaction = getSupportFragmentManager().beginTransaction();
    transaction.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left,
            R.anim.slide_in_left, R.anim.slide_out_right);

    if (fragmentName.equals("error")) {
        DialogCreator dialog = new DialogCreator(this);
        dialog.createDialog("Error !", "Fragment Name is wrong,", "Check fragment name", false);
    } else {
        // fragment name is ignored for different cases, it will be used for
        // further proporties.
        // Just checking out the error in the case its not right parameter.

        NativeViewTestFragment testFragment = new NativeViewTestFragment(fragmentName);

        transaction.replace(R.id.fragment_container, testFragment);
        transaction.addToBackStack(null);
        transaction.commit();
    }
}

@Override
protected void onNewIntent(final Intent intent) {
    super.onNewIntent(intent);

    // Forward to plugins
    if ((this.cordovaWebView != null) && (this.cordovaWebView.pluginManager != null)) {
        this.cordovaWebView.pluginManager.onNewIntent(intent);
    }
}

@Override
public void cancelLoadUrl() {

}

@Override
public ExecutorService getThreadPool() {
    return threadPool;
}

@Override
public Activity getActivity() {
    return this;
}

@Override
public Context getContext() {
    return this;
}

@Override
public Object onMessage(final String id, final Object data) {
    // return getCordovaFragment().onMessage(id, data);
    return null;
}

@Override
public void setActivityResultCallback(CordovaPlugin arg0) {
    // TODO Auto-generated method stub

}

@Override
public void startActivityForResult(CordovaPlugin plugin, Intent intent, int requestCode) {
    mActivityResultCallback = plugin;
    startActivityForResult(intent, requestCode);
}

@Override
/**
 * Called when the system is about to start resuming a previous activity.
 */
protected void onPause() {
    super.onPause();

    // Send pause event to JavaScript
    this.cordovaWebView.loadUrl("javascript:try{cordova.fireDocumentEvent('pause');}catch(e){console.log('exception firing pause event from native');};");

    // Forward to plugins
    if (this.cordovaWebView.pluginManager != null) {
        this.cordovaWebView.pluginManager.onPause(true);
    }
    threadPool.shutdown();
    threadPool = null;
}

@Override
/**
 * Called when the activity will start interacting with the user.
 */
protected void onResume() {
    super.onResume();

    threadPool = Executors.newCachedThreadPool();

    if (this.cordovaWebView == null) {
        return;
    }

    // Send resume event to JavaScript
    this.cordovaWebView
            .loadUrl("javascript:try{cordova.fireDocumentEvent('resume');}catch(e){console.log('exception firing resume event from native');};");

    // Forward to plugins
    if (this.cordovaWebView.pluginManager != null) {
        this.cordovaWebView.pluginManager.onResume(true);
    }       
}

@Override
/**
 * The final call you receive before your activity is destroyed.
 */
public void onDestroy() {
    super.onDestroy();
    if (cordovaWebView.pluginManager != null) {
        cordovaWebView.pluginManager.onDestroy();
    }

    if (this.cordovaWebView != null) {

        // Send destroy event to JavaScript
        this.cordovaWebView
                .loadUrl("javascript:try{cordova.require('cordova/channel').onDestroy.fire();}catch(e){console.log('exception firing destroy event from native');};");

        // Load blank page so that JavaScript onunload is called
        this.cordovaWebView.loadUrl("about:blank");

        // Forward to plugins
        if (this.cordovaWebView.pluginManager != null) {
            this.cordovaWebView.pluginManager.onDestroy();
        }
    } else {
        // this.endActivity();
    }
}
}

编辑：这是 LogCat 输出；

11-23 12:25:36.117: E/AndroidRuntime(9645): FATAL EXCEPTION: main

11-23 12:25:36.117: E/AndroidRuntime(9645): java.lang.RuntimeException: Unable to     destroy activity     {org.apache.cordova.example/okan.apps.nativeview.MainNativeViewController}:     java.lang.IllegalArgumentException: Receiver not registered:     org.apache.cordova.Device$1@45391938
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3655)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3673)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread.access$2900(ActivityThread.java:125)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.os.Looper.loop(Looper.java:123)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread.main(ActivityThread.java:4627)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at java.lang.reflect.Method.invokeNative(Native Method)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at java.lang.reflect.Method.invoke(Method.java:521)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at dalvik.system.NativeStart.main(Native Method)
11-23 12:25:36.117: E/AndroidRuntime(9645): Caused by: java.lang.IllegalArgumentException: Receiver not registered: org.apache.cordova.Device$1@45391938
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread$PackageInfo.forgetReceiverDispatcher(ActivityThread.java:793)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:814)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:331)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at org.apache.cordova.Device.onDestroy(Device.java:98)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at org.apache.cordova.api.PluginManager.onDestroy(PluginManager.java:317)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at okan.apps.nativeview.MainNativeViewController.onDestroy(MainNativeViewController.java:204)
11-23 12:25:36.117: E/AndroidRuntime(9645):     at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3642)
11-23 12:25:36.117: E/AndroidRuntime(9645):     ... 11 more

编辑：

我最终找到了解决方案。我在片段中使用 Cordova Web 视图，我将它从片段中移出并将其放入与片段容器相同的 xml 中。现在它可以正常工作了。在 GitHub 的示例项目中也是如此，CordovaWebView 在 FrameLayout 中。

4

2 回答 2

4

我通过将以下内容添加到 onDestroyView() 在我的片段中解决了这个问题

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        mCordovaWebView.handleDestroy();

    }
于 2015-01-06T17:01:42.843 回答
1

您不需要自己实现整个销毁流程，您可以使用以下内容：

public void onDestroy() {
  LOG.d("Destroying the View", "onDestroy()");
  super.onDestroy();

  if (this.cwv != null) {
    this.cwv.handleDestroy();
  }
}

希望这可以帮助。

于 2012-11-20T12:23:31.107 回答