my android app crash before load main.xml.
This is the exception thrown
java.lang.RuntimeException: Unable to resume activity...:
java.lang.NullPointerException
What happens?
For completeness I enclose my manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="saverio.puccia.nfcauth"
android:versionCode="1"
android:versionName="1.0" >
//permission
<uses-sdk android:minSdkVersion="10" />
<uses-permission android:name="android.permission.NFC"></uses-permission>
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
//main declaration
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".NFCAuthActivity"
android:label="@string/app_name" >
//intent
filter declaration
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.NDEF_DISCOVER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
LOGCAT
06-25 11:03:23.670: E/AndroidRuntime(4323): FATAL EXCEPTION: main
06-25 11:03:23.670: E/AndroidRuntime(4323): java.lang.RuntimeException: Unable to resume activity {saverio.puccia.nfcauth/saverio.puccia.nfcauth.NFCAuthActivity}: java.lang.NullPointerException
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2456)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2484)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1998)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread.access$600(ActivityThread.java:127)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1159)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.os.Handler.dispatchMessage(Handler.java:99)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.os.Looper.loop(Looper.java:137)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread.main(ActivityThread.java:4507)
06-25 11:03:23.670: E/AndroidRuntime(4323): at java.lang.reflect.Method.invokeNative(Native Method)
06-25 11:03:23.670: E/AndroidRuntime(4323): at java.lang.reflect.Method.invoke(Method.java:511)
06-25 11:03:23.670: E/AndroidRuntime(4323): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
06-25 11:03:23.670: E/AndroidRuntime(4323): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
06-25 11:03:23.670: E/AndroidRuntime(4323): at dalvik.system.NativeStart.main(Native Method)
06-25 11:03:23.670: E/AndroidRuntime(4323): Caused by: java.lang.NullPointerException
06-25 11:03:23.670: E/AndroidRuntime(4323): at saverio.puccia.nfcauth.NFCAuthActivity.onResume(NFCAuthActivity.java:103)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1157)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.Activity.performResume(Activity.java:4539)
06-25 11:03:23.670: E/AndroidRuntime(4323): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2446)
06-25 11:03:23.670: E/AndroidRuntime(4323): ... 12 more
06-25 11:03:23.670: W/ActivityManager(1998): Force finishing activity r.intent.getComponent().flattenToShortString()
