I have found one answer that appears to say I should create a separate class and make a static MyApplication object and make a get method. Then any class can call MyApplication.get() to retrieve the context.
Is there any other cleaner way? This is my situation:
I have a class A and a class B. Class A contains an object from class B (let's call the object b). In class A I call, "b.play()". However, I get a null pointer exception because class B needs to pass a context to the MediaPlayer.create() method.
Until now I threw together a hack and from class A I called.... "b.play(this)" and simply passed the context to B. However that is pretty ugly and looks like a bad use of OOP.
Any thoughts?
This problem seem to arise a lot in Android development. One solution to obtaining a reference to a specific Context is subclassing the Application and grab a reference to the Context which you want.
public class MyApplication extends Application {
private Context context;
@Override
public onCreate() {
super.onCreate();
this.context = getApplicationContext() // Grab the Context you want.
}
public static Context getApplicationContext() { return this.context; }
}
This solution however requires that you specify the name of your subclass in your manifest.
<application
android:name=".MyApplication"
</application>
You can then use this anywhere in your application like this in non-activity classes.
MyApplication.getContext(); // Do something with the context! :)