我正在开发一个Phonegap应用程序，看到Phonegap最近已经更新到2.2，有很多Android修复程序。所以我立即更新了xml，jar和JS文件。我的应用曾经很棒。它使用自定义Javascript界面来添加其他功能。不幸的是，当升级到2.2时，我收到以下错误日志：
这是我在运行4.0.4的Samsung Galaxy S2上运行应用时遇到的错误。这是我正在使用的主要应用程序Java文件。
我希望你们能帮我发现问题。我对可能导致JNI错误的原因一无所知。
编辑：我在Android 2.2模拟器上尝试了相同的代码，这给了我一个更具描述性的错误：
10-31 13:02:12.945: I/dalvikvm(543): Could not find method android.webkit.WebView.<init>, referenced from method org.apache.cordova.CordovaWebView.<init>
10-31 13:02:12.945: W/dalvikvm(543): VFY: unable to resolve direct method 3298: Landroid/webkit/WebView;.<init> (Landroid/content/Context;Landroid/util/AttributeSet;IZ)V
10-31 13:02:12.945: D/dalvikvm(543): VFY: replacing opcode 0x70 at 0x0001
10-31 13:02:12.945: D/dalvikvm(543): VFY: dead code 0x0004-005b in Lorg/apache/cordova/CordovaWebView;.<init> (Landroid/content/Context;Landroid/util/AttributeSet;IZ)V
10-31 13:02:13.195: I/CordovaLog(543): Changing log level to DEBUG(3)
10-31 13:02:13.205: I/CordovaLog(543): Found preference for useBrowserHistory=false
10-31 13:02:13.205: D/CordovaLog(543): Found preference for useBrowserHistory=false
10-31 13:02:13.205: I/CordovaLog(543): Found preference for exit-on-suspend=false
10-31 13:02:13.205: D/CordovaLog(543): Found preference for exit-on-suspend=false
10-31 13:02:13.215: W/CordovaWebView(543): useBrowserHistory=false is deprecated as of Cordova 2.2.0 and will be removed six months after the 2.2.0 release. Please use the browser history and use history.back().
10-31 13:02:13.245: D/JsMessageQueue(543): Set native->JS mode to 2
10-31 13:02:13.245: I/CordovaWebView(543): Disabled addJavascriptInterface() bridge since Android version is old.
10-31 13:02:13.255: D/CordovaWebView(543): Origin to allow: http://127.0.0.1*
10-31 13:02:13.255: D/CordovaWebView(543): Unlimited access to network resources
10-31 13:02:13.265: D/CordovaWebView(543): Origin to allow: http://api.enkhuizenapp.nl
10-31 13:02:13.265: D/CordovaWebView(543): Origin to allow: .*
10-31 13:02:13.265: I/CordovaLog(543): Found log level DEBUG
10-31 13:02:13.265: I/CordovaLog(543): Changing log level to DEBUG(3)
10-31 13:02:13.265: I/CordovaLog(543): Found preference for useBrowserHistory=false
10-31 13:02:13.265: D/CordovaLog(543): Found preference for useBrowserHistory=false
10-31 13:02:13.265: I/CordovaLog(543): Found preference for exit-on-suspend=false
10-31 13:02:13.265: D/CordovaLog(543): Found preference for exit-on-suspend=false
10-31 13:02:13.265: W/CordovaWebView(543): useBrowserHistory=false is deprecated as of Cordova 2.2.0 and will be removed six months after the 2.2.0 release. Please use the browser history and use history.back().
10-31 13:02:13.285: D/JsMessageQueue(543): Set native->JS mode to 2
10-31 13:02:13.285: I/CordovaWebView(543): Disabled addJavascriptInterface() bridge since Android version is old.
10-31 13:02:13.285: D/CordovaWebView(543): >>> loadUrl(file:///android_asset/www/menu.html)
10-31 13:02:13.285: D/PluginManager(543): init()
10-31 13:02:13.296: D/CordovaWebView(543): >>> loadUrlNow()
10-31 13:02:13.296: D/CordovaWebView(543): >>> loadUrl(file:///android_asset/www/main.html)
10-31 13:02:13.296: D/PluginManager(543): init()
10-31 13:02:13.315: D/CordovaWebView(543): >>> loadUrlNow()
10-31 13:02:13.955: D/dalvikvm(543): GC_FOR_MALLOC freed 1775 objects / 133528 bytes in 76ms
10-31 13:02:14.765: D/Cordova(543): onPageFinished(file:///android_asset/www/menu.html)
10-31 13:02:15.365: D/Cordova(543): onPageFinished(file:///android_asset/www/main.html)
10-31 13:02:15.685: I/Database(543): sqlite returned: error code = 14, msg = cannot open file at source line 25467
10-31 13:02:15.945: D/CordovaLog(543): Falling back on PROMPT mode since _cordovaNative is missing.
10-31 13:02:15.955: D/CordovaLog(543): file:///android_asset/www/scripts/cordova-2.2.0.js: Line 1032 : Falling back on PROMPT mode since _cordovaNative is missing.
10-31 13:02:15.955: I/Web Console(543): Falling back on PROMPT mode since _cordovaNative is missing. at file:///android_asset/www/scripts/cordova-2.2.0.js:1032
10-31 13:02:16.065: D/AndroidRuntime(543): Shutting down VM
10-31 13:02:16.065: W/dalvikvm(543): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-31 13:02:16.075: E/AndroidRuntime(543): FATAL EXCEPTION: main
10-31 13:02:16.075: E/AndroidRuntime(543): java.lang.NullPointerException
10-31 13:02:16.075: E/AndroidRuntime(543): at org.apache.cordova.api.Plugin.execute(Plugin.java:74)
10-31 13:02:16.075: E/AndroidRuntime(543): at org.apache.cordova.api.CordovaPlugin.execute(CordovaPlugin.java:61)
10-31 13:02:16.075: E/AndroidRuntime(543): at org.apache.cordova.api.PluginManager.exec(PluginManager.java:224)
10-31 13:02:16.075: E/AndroidRuntime(543): at org.apache.cordova.ExposedJsApi.exec(ExposedJsApi.java:43)
10-31 13:02:16.075: E/AndroidRuntime(543): at org.apache.cordova.CordovaChromeClient.onJsPrompt(CordovaChromeClient.java:213)
10-31 13:02:16.075: E/AndroidRuntime(543): at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:566)
10-31 13:02:16.075: E/AndroidRuntime(543): at android.os.Handler.dispatchMessage(Handler.java:99)
10-31 13:02:16.075: E/AndroidRuntime(543): at android.os.Looper.loop(Looper.java:123)
10-31 13:02:16.075: E/AndroidRuntime(543): at android.app.ActivityThread.main(ActivityThread.java:4627)
10-31 13:02:16.075: E/AndroidRuntime(543): at java.lang.reflect.Method.invokeNative(Native Method)
10-31 13:02:16.075: E/AndroidRuntime(543): at java.lang.reflect.Method.invoke(Method.java:521)
10-31 13:02:16.075: E/AndroidRuntime(543): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-31 13:02:16.075: E/AndroidRuntime(543): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-31 13:02:16.075: E/AndroidRuntime(543): at dalvik.system.NativeStart.main(Native Method)
提前致谢！
答案 0 :(得分：7)
此问题有一个当前的解决方法，那就是您将线程池添加到CordovaActivity：
private final ExecutorService threadPool = Executors.newCachedThreadPool();
当然，实现新添加的getThreadPool（）方法。这是偶然添加的，并且希望以某种方式封装在下一个版本中。
public ExecutorService getThreadPool()
{
return threadPool;
}
答案 1 :(得分：-1)
我遇到了这个问题，但在按照文档Upgrading Cordova Android中描述的步骤操作后，该错误消失了。