CODEWITHSUNDEEP
androidnullpointerexceptionandroid-context
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Reputation: 3102

NullPointer on LayoutInflater - Android

I have a class in another java file that I'm calling in my MainActivity. I need to inflate some layouts in the external class. The problem I'm having is specifying the context, because when I try to inflate the layouts I get a Null Pointer Exception. The class doesn't have it's own onCreate() method so I need to pass the context from my MainActivity? Not sure how to go about it. This is causing me the NullPointerException: 

Context context = getApplicationContext();
LayoutInflater inflater = (LayoutInflater)context.getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);;

NullPointerException on Context context: 

public class CameraListener extends Activity implements OnCameraChangeListener {

    private static final int SCALE_HEIGHT = 50;
    GoogleMap mMap;
    GoogleC3iActivity mParent;


    Context context = getApplicationContext();

Upvotes: 0

Views: 1181

Answers (2)

Siddharth
Siddharth

Reputation: 9574

Multiple Issues

First

Context context = getApplicationContext();
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

You shouldn't need the getApplicationContext(), since you already have it.

OR (credits : @Delyan)

LayoutInflater.from(context)

Second

Context context = getApplicationContext(); does not work before setContentView. So you need to initialize context after you call setContentView in your onCreate

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.home);
    context = getApplicationContext() ;

Same goes for LayoutInflater, you need to initialize it in the onCreate

Upvotes: 2

WarrenFaith
WarrenFaith

Reputation: 57672

Activity extends from Context that means you just need LayoutInflater inflater = LayoutInflater.from(this); in your onCreate() method.

Upvotes: 0

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