App crashes on startup when adding NFC plugin

[Gil401]

Hi @doncoleman Whats up?

When running cordova run android this is the error I am getting from my adb logcat:

/PluginManager( 7534): init() W/System.err( 7534): java.lang.ClassNotFoundException: com.chariotsolutions.nfc.plugin.NfcPlugin W/System.err( 7534): at java.lang.Class.classForName(Native Method) W/System.err( 7534): at java.lang.Class.forName(Class.java:251) W/System.err( 7534): at java.lang.Class.forName(Class.java:216) W/System.err( 7534): at org.apache.cordova.PluginManager.instantiatePlugin(PluginManager.java:403) W/System.err( 7534): at org.apache.cordova.PluginManager.getPlugin(PluginManager.java:193) W/System.err( 7534): at org.apache.cordova.PluginManager.startupPlugins(PluginManager.java:116) W/System.err( 7534): at org.apache.cordova.PluginManager.init(PluginManager.java:92) W/System.err( 7534): at org.apache.cordova.CordovaWebView.init(CordovaWebView.java:163) W/System.err( 7534): at org.apache.cordova.CordovaActivity.init(CordovaActivity.java:345) W/System.err( 7534): at org.apache.cordova.CordovaActivity.init(CordovaActivity.java:320) W/System.err( 7534): at io.cordova.hellocordova.MainActivity.onCreate(MainActivity.java:31) W/System.err( 7534): at android.app.Activity.performCreate(Activity.java:5231) W/System.err( 7534): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) W/System.err( 7534): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2227) W/System.err( 7534): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2313) W/System.err( 7534): at android.app.ActivityThread.access$800(ActivityThread.java:147) W/System.err( 7534): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1226) W/System.err( 7534): at android.os.Handler.dispatchMessage(Handler.java:102) W/System.err( 7534): at android.os.Looper.loop(Looper.java:136) W/System.err( 7534): at android.app.ActivityThread.main(ActivityThread.java:5137) W/System.err( 7534): at java.lang.reflect.Method.invokeNative(Native Method) W/System.err( 7534): at java.lang.reflect.Method.invoke(Method.java:515) W/System.err( 7534): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:801) W/System.err( 7534): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:617) W/System.err( 7534): at dalvik.system.NativeStart.main(Native Method) W/System.err( 7534): Caused by: java.lang.NoClassDefFoundError: com/chariotsolutions/nfc/plugin/NfcPlugin W/System.err( 7534): ... 25 more W/System.err( 7534): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.chariotsolutions.nfc.plugin.NfcPlugin" on path: DexPathList[[zip file "/data/app/io.cordova.hell ocordova-1.apk"],nativeLibraryDirectories=[/data/app-lib/io.cordova.hellocordova-1, /vendor/lib, /system/lib]] W/System.err( 7534): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) W/System.err( 7534): at java.lang.ClassLoader.loadClass(ClassLoader.java:497) W/System.err( 7534): at java.lang.ClassLoader.loadClass(ClassLoader.java:457) W/System.err( 7534): ... 25 more I/System.out( 7534): Error adding plugin com.chariotsolutions.nfc.plugin.NfcPlugin. D/AndroidRuntime( 7534): Shutting down VM W/dalvikvm( 7534): threadid=1: thread exiting with uncaught exception (group=0x4167fd58) E/AndroidRuntime( 7534): FATAL EXCEPTION: main E/AndroidRuntime( 7534): Process: io.cordova.hellocordova, PID: 7534 E/AndroidRuntime( 7534): java.lang.RuntimeException: Unable to start activity ComponentInfo{io.cordova.hellocordova/io.cordova.hellocordova.MainActivity}: java.lang.NullPointerException

E/AndroidRuntime( 7534): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2263) E/AndroidRuntime( 7534): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2313) E/AndroidRuntime( 7534): at android.app.ActivityThread.access$800(ActivityThread.java:147) E/AndroidRuntime( 7534): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1226) E/AndroidRuntime( 7534): at android.os.Handler.dispatchMessage(Handler.java:102) E/AndroidRuntime( 7534): at android.os.Looper.loop(Looper.java:136) E/AndroidRuntime( 7534): at android.app.ActivityThread.main(ActivityThread.java:5137) E/AndroidRuntime( 7534): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime( 7534): at java.lang.reflect.Method.invoke(Method.java:515) E/AndroidRuntime( 7534): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:801) E/AndroidRuntime( 7534): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:617) E/AndroidRuntime( 7534): at dalvik.system.NativeStart.main(Native Method) E/AndroidRuntime( 7534): Caused by: java.lang.NullPointerException E/AndroidRuntime( 7534): at org.apache.cordova.PluginManager.getPlugin(PluginManager.java:195) E/AndroidRuntime( 7534): at org.apache.cordova.PluginManager.startupPlugins(PluginManager.java:116) E/AndroidRuntime( 7534): at org.apache.cordova.PluginManager.init(PluginManager.java:92) E/AndroidRuntime( 7534): at org.apache.cordova.CordovaWebView.init(CordovaWebView.java:163) E/AndroidRuntime( 7534): at org.apache.cordova.CordovaActivity.init(CordovaActivity.java:345) E/AndroidRuntime( 7534): at org.apache.cordova.CordovaActivity.init(CordovaActivity.java:320) E/AndroidRuntime( 7534): at io.cordova.hellocordova.MainActivity.onCreate(MainActivity.java:31) E/AndroidRuntime( 7534): at android.app.Activity.performCreate(Activity.java:5231) E/AndroidRuntime( 7534): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) E/AndroidRuntime( 7534): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2227) E/AndroidRuntime( 7534): ... 11 more W/ActivityManager( 1193): Force finishing activity io.cordova.hellocordova/.MainActivity

[Gil401]

I susspect it is related to the fact that i am using a few plugins... is there something needs to be changed in the android.json maybe?

Thank you!!

[don]

It looks like the problem is that the phonegap-nfc plugin is not installed.

 java.lang.ClassNotFoundException: com.chariotsolutions.nfc.plugin.NfcPlugin

You should never need to edit android.json. Use cordova plugin add com.chariotsolutions.nfc.plugin plugman should install all the files in the correct places. If cordova plugin ls shows the plugin installed, try removing and re-adding the plugin.

[don]

@Gil401 did you solve this issue?