設置不使用XML佈局的按鈕

Question

使用eclipse創建我的第一個遊戲程序。我的問題是。有沒有可能設置一個按鈕，而不使用XML？

在聲明2個setcontentviews時遇到問題。該按鈕實際上並未出現在遊戲中。有人能幫助我嗎？

public class Game extends Activity { 
Maze maze; 
public void onCreate(Bundle savedInstanceState) { 

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  
    WindowManager.LayoutParams.FLAG_FULLSCREEN); 
    super.onCreate(savedInstanceState); 
    Intent intent = getIntent(); 
    Bundle extras = intent.getExtras(); 
    this.maze = (Maze)getLastNonConfigurationInstance(); 
    if(this.maze == null) { 
     this.maze = (Maze)extras.get("maze"); 
    } 
    GameView view = new GameView(this); 
    view.setMaze(this.maze); 

    Button myButton = new Button(this); 
    myButton.setText("Press me"); 
    myButton.setBackgroundColor(Color.YELLOW); 

     RelativeLayout myLayout = new RelativeLayout(this); 

     RelativeLayout.LayoutParams buttonParams = 
       new RelativeLayout.LayoutParams(
        RelativeLayout.LayoutParams.WRAP_CONTENT, 
        RelativeLayout.LayoutParams.WRAP_CONTENT); 

     buttonParams.addRule(RelativeLayout.CENTER_HORIZONTAL); 
     buttonParams.addRule(RelativeLayout.CENTER_VERTICAL); 

     myLayout.addView(myButton, buttonParams); 

     setContentView(myLayout); 
    setContentView(view); 
}  
} 

Answer 1

Button button = new Button(this) ; 
    button.setOnClickListener(new OnClickListener() { 

    @Override 
    public void onClick(View v) { 
     // TODO Auto-generated method stub 

    } 

    }) ; 

OR

ViewGroup vg = new RelativeLayout(this) ; 
    ImageView iv = new ImageView(this) ; 
    vg.addView(iv); 
    RelativeLayout.LayoutParams params = new   RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT) ; 
    vg.setLayoutParams(params); 
    setContentView(vg) ; 

希望這是你問 作爲替代使用XML。

Answer 2

Yes按鈕可以顯示不使用XML，併爲此做以下的事情

1. 創建活動，並覆蓋onCreate方法

2. 使按鈕 Button按鈕=新的Button實例（」按代碼按鈕「）;

   3.and set view by setContentView（button）;