MVC with IoC Sample

/**
 * Sample only for ate charms ^_^
 */
public class SomeController implements SomeViewActionListener, SomeModelEventListener {

    private SomeModel someModel;
    private SomeView someView;

    public SomeController() {
        someModel = new SomeModel(this);
        someView = new SomeView (this);
    }

    @Override
    public void onDownloadSomethingCommand() {
        someModel.downloadSomething();
    }

    @Override
    public void onDownloadDone(Content content) {
        someView.displaySomeContent(content);
    }

}

public class SomeModel {

    private SomeModelEventListener eventListener;

    public SomeModel(SomeModelEventListener eventListener) {
        this.eventListener = eventListener;
    }

    public void downloadSomething() {
        // ... download on a different thread, since this is a different thread, a return is not possible
        // or else the UI will be blocked

        // .. when done: where content is the content downloaded
        eventListener.onDownloadDone(content);
    }

}

public class SomeView() {

    private Button bDownloadSomethingButton;
    private SomeViewActionListener actionListener;

    public SomeView(SomeViewActionListener actionListener) {
        this.actionListener = actionListener;

        // This is inversion of control as well
        bDownloadSomethingButton.setOnClickListener(new OnCLickListener() {
            actionListener.onDownloadSomethingCommand();
        });

    }

    public void displaySomeContent(Content content) {
        // display content here
    }

}

public interface SomeViewActionListener {
    public void onDownloadSomethingCommand();
}

public interface SomeModelEventListener {
    public void onDownloadDone(Content content);
}