Pessoal preciso de uma ajuda aqui para sabe onde esse erro esta vindo e qual a variável está nula …
08-06 16:32:02.019: E/Trace(846): error opening trace file: No such file or directory (2)
08-06 16:32:02.989: D/AndroidRuntime(846): Shutting down VM
08-06 16:32:02.989: W/dalvikvm(846): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
08-06 16:32:02.999: E/AndroidRuntime(846): FATAL EXCEPTION: main
08-06 16:32:02.999: E/AndroidRuntime(846): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.techblogon.loginexample/com.techblogon.loginexample.HomeActivity}: java.lang.NullPointerException
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.os.Handler.dispatchMessage(Handler.java:99)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.os.Looper.loop(Looper.java:137)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.ActivityThread.main(ActivityThread.java:5041)
08-06 16:32:02.999: E/AndroidRuntime(846): at java.lang.reflect.Method.invokeNative(Native Method)
08-06 16:32:02.999: E/AndroidRuntime(846): at java.lang.reflect.Method.invoke(Method.java:511)
08-06 16:32:02.999: E/AndroidRuntime(846): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-06 16:32:02.999: E/AndroidRuntime(846): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-06 16:32:02.999: E/AndroidRuntime(846): at dalvik.system.NativeStart.main(Native Method)
08-06 16:32:02.999: E/AndroidRuntime(846): Caused by: java.lang.NullPointerException
08-06 16:32:02.999: E/AndroidRuntime(846): at android.database.DatabaseUtils.getSqlStatementType(DatabaseUtils.java:1363)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1650)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1594)
08-06 16:32:02.999: E/AndroidRuntime(846): at com.techblogon.loginexample.DataBaseHelper.onCreate(DataBaseHelper.java:20)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
08-06 16:32:02.999: E/AndroidRuntime(846): at com.techblogon.loginexample.LoginDataBaseAdapter.open(LoginDataBaseAdapter.java:71)
08-06 16:32:02.999: E/AndroidRuntime(846): at com.techblogon.loginexample.HomeActivity.onCreate(HomeActivity.java:25)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.Activity.performCreate(Activity.java:5104)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
08-06 16:32:02.999: E/AndroidRuntime(846): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
08-06 16:32:02.999: E/AndroidRuntime(846): ... 11 more