Activity don't work in 4.3 and 4.4.2

StackOverflow https://stackoverflow.com/questions/23689987

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)
Was it helpful?

Solution 

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

OTHER TIPS

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>
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