Center RelativeLayout或它的內容

Question

我正在做一個小應用程序，因爲我在學習Android這些天，我想出了一個小問題，我做了一個RelativeLayout（在java文件中，而不是xml文件），然後引入按鈕在一個相對於另一個。

最終佈局其是這樣的：

我做的是我創建中間的一排按鈕，然後將所有相對於他的其他按鈕。我想要做的是將RelativeLayout放置在視圖中，這樣我的電路板就居中了，我可以在屏幕上放置一些文本或其他東西。我曾考慮過在RelativeLayout之前創建一個LinearLayout，然後設置一些類似margin的內容或將RelativeLAyout引入另一個佈局來居中，但似乎不工作，您建議我如何實現該目標而不必更改我製作電路板的方式？這裏是製作電路板的代碼：

private RelativeLayout makeBoard(){ 
    int papi = 4; 
    int grande =3; 
    int peque = 1; 
    RelativeLayout.LayoutParams params = new  RelativeLayout.LayoutParams(wrap_content,wrap_content); 
    RelativeLayout parent = new RelativeLayout(this); 


    parent.setLayoutParams(params); 



    papi = makeRow(parent,papi,peque); 
    papi = makeRow(parent,papi,peque); 

    papi = makeRow(parent,papi,grande); 
    papi = makeRow(parent,papi,grande); 
    papi = makeRow(parent,papi,grande); 

    papi = makeRow(parent,papi,peque); 
    papi = makeRow(parent,papi,peque); 
    return parent; 
} 

private int makeRow (RelativeLayout parent, int papasote,int colDer) 
{ 


    int index = papasote+10; 
    if (papasote==4) 
    { 
     createButtonSinMas (parent, index); 
    } 
    else 
    { 
     createButtonJustoAbajo(parent, index, papasote); 
    } 

    for (int i=0;i<colDer;i++) 
    { 
     createButtonAlaDeresha(parent, index+i+1, index+i); 
     createButtonAlaIskierda(parent, index-i-1, index-i); 
    } 
    return index; 
} 


private int createButtonSinMas (RelativeLayout parent, int id) 
{ 
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(SIZE, SIZE); 
    params.addRule(RelativeLayout.CENTER_HORIZONTAL,RelativeLayout.TRUE); 
    CCCButton button = new CCCButton(this); 
    button.setLayoutParams(params); 
    return basura(parent,id,params, button); 
} 

private int createButtonJustoAbajo (RelativeLayout parent, int id, int papasote) 
{ 
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(SIZE, SIZE); 
    params.addRule(RelativeLayout.BELOW, papasote); 
    params.addRule(RelativeLayout.ALIGN_RIGHT, papasote); 
    CCCButton button = new CCCButton(this); 
    return basura(parent,id,params, button); 

} 

private int createButtonAlaDeresha (RelativeLayout parent, int id, int papasote) 
{ 
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(SIZE, SIZE); 
    params.addRule(RelativeLayout.RIGHT_OF, papasote); 
    params.addRule(RelativeLayout.ALIGN_BASELINE,papasote); 
    CCCButton button = new CCCButton(this); 
    return basura(parent,id,params, button); 
} 

private int createButtonAlaIskierda (RelativeLayout parent, int id, int papasote) 
{ 
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(SIZE, SIZE); 
    params.addRule(RelativeLayout.LEFT_OF, papasote); 
    params.addRule(RelativeLayout.ALIGN_BASELINE,papasote);  
    CCCButton button = new CCCButton(this); 
    return basura(parent,id,params, button); 
} 

private int basura(RelativeLayout parent,int id,RelativeLayout.LayoutParams params, CCCButton button) 
{ 
    button.setId(id); 
    button.setLayoutParams(params); 
    button.setOnClickListener(this);  
    actualizarBoton(button); 

    parent.addView(button); 
    return button.getId(); 
} 

然後我只是在我的主板= makeBoard（）;板是一個RelativeLayout變量。

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    game = new Game(); 
    board = makeBoard(); 
    setContentView(board); 
} 

在此先感謝球員

Answer 1

試着做下面的代碼中的變化。從WRAP_CONTENT

變化的LayoutParams到match_parent

並設置相對佈局的重力中心。

private RelativeLayout makeBoard() { 
     int papi = 4; 
     int grande = 3; 
     int peque = 1; 
     RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
       LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); 
     RelativeLayout parent = new RelativeLayout(this); 

     parent.setLayoutParams(params); 
     parent.setGravity(Gravity.CENTER); 


     papi = makeRow(parent, papi, peque); 
     papi = makeRow(parent, papi, peque); 

     papi = makeRow(parent, papi, grande); 
     papi = makeRow(parent, papi, grande); 
     papi = makeRow(parent, papi, grande); 

     papi = makeRow(parent, papi, peque); 
     papi = makeRow(parent, papi, peque); 
     return parent; 
    }