NullPointerException reported by many users

[GoogleCodeExporter]

Reported 26 times so far.

Exception class java.lang.NullPointerException
Source method PreferenceScreen.playSound()

Stack trace:
java.lang.NullPointerException
at 
com.ropez.android.sleepcheckreminder.PreferenceScreen.playSound(PreferenceScreen
.java:106)
at 
com.ropez.android.sleepcheckreminder.PreferenceScreen.access$2(PreferenceScreen.
java:104)
at 
com.ropez.android.sleepcheckreminder.PreferenceScreen$3.onPreferenceChange(Prefe
renceScreen.java:80)
at android.preference.Preference.callChangeListener(Preference.java:756)
at 
com.hlidskialf.android.preference.SeekBarPreference.onProgressChanged(SeekBarPre
ference.java:98)
at android.widget.SeekBar.onProgressRefresh(SeekBar.java:89)
at android.widget.ProgressBar.doRefreshProgress(ProgressBar.java:506)
at android.widget.ProgressBar.refreshProgress(ProgressBar.java:515)
at android.widget.ProgressBar.setProgress(ProgressBar.java:564)
at android.widget.AbsSeekBar.trackTouchEvent(AbsSeekBar.java:338)
at android.widget.AbsSeekBar.onTouchEvent(AbsSeekBar.java:297)
at android.view.View.dispatchTouchEvent(View.java:3823)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at 
com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(P
honeWindow.java:1723)
at 
com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow
.java:1129)
at android.app.Dialog.dispatchTouchEvent(Dialog.java:642)
at 
com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneW
indow.java:1707)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1785)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)

Original issue reported on code.google.com by [email protected] on 21 Mar 2012 at 8:07