IllegalStateException in my Android app caused by Theme.AppCompat

Question

I get a NPE when I try to launch the App. I don\'t know what causes it. The App should show a map at a website. Then the User can easily type his location into the edittext and

Answer 1

You need to use a Theme.AppCompat theme (or descendant) with this activity.

You have

public class MainActivity extends ActionBarActivity

You are using ActionBar from support library and you need to have Theme.AppCompat for your activity

Apply AppCompat theme for the activity in manifest file.

<activity android:theme="@style/Theme.AppCompat

Please check Adding Actionbar in the below link

http://developer.android.com/guide/topics/ui/actionbar.html

Also check this blog

http://android-developers.blogspot.in/2013/08/actionbarcompat-and-io-2013-app-source.html

Also btgo is not initialized which will cause NullPointerException