Javascript phonegap插件中用于更改屏幕方向的错误

我得到了这个错误

未捕获的TypeError:对象#在上没有方法“exec”file:///android_asset/www/JS/pg-plugin-screen-orientation.js:4

我遵循了本文件中给出的步骤。

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现在它运行良好。但是当执行这一行时，应用程序崩溃了

activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 

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您使用的是什么版本的PhoneGap/Cordova？在最新版本中，

PhoneGap

对象已重命名为

cordova

。因此，您可能需要更新JS文件以调用

cordova.exec

，而不是

PhoneGap.exec

调用exec时，我遇到了这个错误。函数在

onDeviceReady（）

事件已触发

activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 

07-24 18:01:19.200: E/AndroidRuntime(12001): FATAL EXCEPTION: main
07-24 18:01:19.200: E/AndroidRuntime(12001): android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@4054e820 is not valid; is your activity running?
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.view.ViewRoot.setView(ViewRoot.java:527)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.view.Window$LocalWindowManager.addView(Window.java:424)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.app.Dialog.show(Dialog.java:241)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.app.AlertDialog$Builder.show(AlertDialog.java:802)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at org.apache.cordova.Notification$1.run(Notification.java:205)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.app.Activity.runOnUiThread(Activity.java:3717)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at org.apache.cordova.Notification.alert(Notification.java:208)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at org.apache.cordova.Notification.execute(Notification.java:70)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at org.apache.cordova.api.PluginManager.exec(PluginManager.java:212)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at org.apache.cordova.CordovaChromeClient.onJsPrompt(CordovaChromeClient.java:185)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:566)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.os.Handler.dispatchMessage(Handler.java:99)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.os.Looper.loop(Looper.java:123)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at android.app.ActivityThread.main(ActivityThread.java:3683)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at java.lang.reflect.Method.invokeNative(Native Method)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at java.lang.reflect.Method.invoke(Method.java:507)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
07-24 18:01:19.200: E/AndroidRuntime(12001):    at dalvik.system.NativeStart.main(Native Method)