I am new to android. My minimum API level needs to be 7, so that I can test the app on my htc hero. My target API level is 17. The error concerns the actionbar. Some code is added by eclipse and I guess I need it to propperly run my app on the latest android versions:
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar() gives NPE on API 7, but not on API 17. How do I solve this without deleting the code (which I will presumably need for modern API levels)?
Basically, You need to follow this. If You need some good example, I think Android IO app source might be a good example on how to develop taking care about form-factor, API level etc. during runtime (however, it might be little bit difficult for completely new to android)
Action bar is not supported in any pre-honeycomb versions so any method related to action bar will not get executed....but after searching SO i came across this brilliant thing...
just check this out...
You can find out more information as well as screenshots of sample applications at link
The library is 100% open source and available at check this
from below question...
i think your device have android version 2.1 thats why you get error.
just add this actionbarsherlock lib to your Project.
after that just change this line
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
