Crashes caused by empty Counter Step

[slumdroid]

Application crashes with the following stack traces when "Set Counter Step" is empty.

E/AndroidRuntime( 676): FATAL EXCEPTION: main
E/AndroidRuntime( 676): java.lang.IllegalStateException: Could not execute method of the activity
E/AndroidRuntime( 676): at android.view.View$1.onClick(View.java:3591)
E/AndroidRuntime( 676): at android.view.View.performClick(View.java:4084)
E/AndroidRuntime( 676): at android.view.View$PerformClick.run(View.java:16966)
E/AndroidRuntime( 676): at android.os.Handler.handleCallback(Handler.java:615)
E/AndroidRuntime( 676): at android.os.Handler.dispatchMessage(Handler.java:92)
E/AndroidRuntime( 676): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 676): at android.app.ActivityThread.main(ActivityThread.java:4745)
E/AndroidRuntime( 676): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 676): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 676): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
E/AndroidRuntime( 676): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime( 676): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 676): Caused by: java.lang.reflect.InvocationTargetException
E/AndroidRuntime( 676): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 676): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 676): at android.view.View$1.onClick(View.java:3586)
E/AndroidRuntime( 676): ... 11 more
E/AndroidRuntime( 676): Caused by: java.lang.NumberFormatException: Invalid int: ""
E/AndroidRuntime( 676): at java.lang.Integer.invalidInt(Integer.java:138)
E/AndroidRuntime( 676): at java.lang.Integer.parseInt(Integer.java:359)
E/AndroidRuntime( 676): at java.lang.Integer.parseInt(Integer.java:332)
E/AndroidRuntime( 676): at com.omegavesko.simplecounter.MainActivity.increment(MainActivity.java:68)
E/AndroidRuntime( 676): ... 14 more
W/ActivityManager( 149): Force finishing activity com.omegavesko.holocounter/com.omegavesko.simplecounter.MainActivity

---

E/AndroidRuntime( 676): FATAL EXCEPTION: main
E/AndroidRuntime( 676): java.lang.IllegalStateException: Could not execute method of the activity
E/AndroidRuntime( 676): at android.view.View$1.onClick(View.java:3591)
E/AndroidRuntime( 676): at android.view.View.performClick(View.java:4084)
E/AndroidRuntime( 676): at android.view.View$PerformClick.run(View.java:16966)
E/AndroidRuntime( 676): at android.os.Handler.handleCallback(Handler.java:615)
E/AndroidRuntime( 676): at android.os.Handler.dispatchMessage(Handler.java:92)
E/AndroidRuntime( 676): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 676): at android.app.ActivityThread.main(ActivityThread.java:4745)
E/AndroidRuntime( 676): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 676): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 676): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
E/AndroidRuntime( 676): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime( 676): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 676): Caused by: java.lang.reflect.InvocationTargetException
E/AndroidRuntime( 676): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 676): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 676): at android.view.View$1.onClick(View.java:3586)
E/AndroidRuntime( 676): ... 11 more
E/AndroidRuntime( 676): Caused by: java.lang.NumberFormatException: Invalid int: ""
E/AndroidRuntime( 676): at java.lang.Integer.invalidInt(Integer.java:138)
E/AndroidRuntime( 676): at java.lang.Integer.parseInt(Integer.java:359)
E/AndroidRuntime( 676): at java.lang.Integer.parseInt(Integer.java:332)
E/AndroidRuntime( 676): at com.omegavesko.simplecounter.MainActivity.decrement(MainActivity.java:96)
E/AndroidRuntime( 676): ... 14 more
W/ActivityManager( 149): Force finishing activity com.omegavesko.holocounter/com.omegavesko.simplecounter.MainActivity