Add Button on custom View in Android

问题:

I have the following class

public class GameActivity extends Activity {    @Override    public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       View gameView = new GameView(this);       setContentView(gameView);    } } 

and now I'd like to add a Button to my class GameView.

public GameView(Context context) {         super(context); // Code ... } 

I need this button during my game, so it should be alywas in front of all the other canvas' I'm drawing.
How can I do that?

回答1:

Do you want to create a new button?

Button b = new Button(context); b.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,                                     LayoutParams.WRAP_CONTENT));   gameView.addView(b); 

Use ViewGroup as GameView parent insted of simple View

ViewGroup gameView = new GameView(this);   public class GameView extends ViewGroup { //... 

回答2:

View gameView = new GameView(this); 

replace the above line by below line::

View gameView = new GameView(this).createView(); 

and now in the Game view createview with button and etc.

    public class GameView extends View {     private Activity _activity;     public GameView (Activity _activity) {         super(_activity);         // TODO Auto-generated constructor stub         this._activity = _activity;      } public View createView(){         LinearLayout l = new LinearLayout(_activity);         l.setOrientation(LinearLayout.VERTICAL);         Button btn = new Button(_activity);         btn.setId(1);             btn.setText("btn"+(i+1));         l.addView(btn);         return l;     } } 

try this working code:::

文章来源: Add Button on custom View in Android