View Inflation and custom views

Question

I have a custom view in my app that I draw using the onDraw() function in the View. Also it needs some data from the ACtivity to draw the graphic. So instead of

Answer 1

What you should have here is a layout that contains the TextView and your MyView and then inside your activity, find your custom view and pass in your user data. Your MyView can then use this during its onDraw(). Perhaps something like this:

res/layout/main.xml:

src/my/package/MyView.java:

public class MyView extends View {
    UserData mUserData = null;
    public void setUserData(userData) {
        mUserData = userData;
    }

    @Override
    protected void onDraw(Canvas canvas) {
        performCustomDrawingWithUserData(mUserData);
        super.onDraw(canvas);
    }

}

src/my/package/MyActivity.java:

public class MyActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // pass the user data into myview here.
        MyView myView = (MyView) findViewById(R.id.myview);
        myView.setUserData(userData);
    }

}