Activity don't work in 4.3 and 4.4.2

Question

I have an activity with only some buttons. When I click in one appears an Alert Dialog. It works in 2.3.6, 4.0.3 and 4.1.2, but in 4.3 and 4.4.2 I had a problem.

My errors:

05-15 19:15:23.145: E/AndroidRuntime(16247): FATAL EXCEPTION: main
05-15 19:15:23.145: E/AndroidRuntime(16247): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.MYPROJECT/br.com.MYPROJECT.MYACTIVITY}: java.lang.NullPointerException
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.ActivityThread.access$700(ActivityThread.java:159)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.os.Looper.loop(Looper.java:176)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.ActivityThread.main(ActivityThread.java:5419)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at java.lang.reflect.Method.invokeNative(Native Method)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at java.lang.reflect.Method.invoke(Method.java:525)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at dalvik.system.NativeStart.main(Native Method)
05-15 19:15:23.145: E/AndroidRuntime(16247): Caused by: java.lang.NullPointerException
05-15 19:15:23.145: E/AndroidRuntime(16247):    at br.com.MYPROJECT.MYACTIVITY.onCreate(Padroeiros.java:139)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.Activity.performCreate(Activity.java:5372)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
05-15 19:15:23.145: E/AndroidRuntime(16247):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)

Answer 1

Caused by: java.lang.NullPointerException at br.com.MYPROJECT.MYACTIVITY.onCreate(Padroeiros.java:139)

you have a Null Pointer Exception at line 139 of Padroeiros.java

Answer 2

check  your  manifest  

you app package and your activity package can be different. but in this case please use activity full path in name attribute

for example :

   <activity
            android:name="br.com.MYPROJECT.MYACTIVITY"
            android:launchMode="singleTask"
            android:screenOrientation="portrait"
            android:windowSoftInputMode="adjustResize" >
        </activity>