android 中动态创建控件

 

 
  public  
  void onCreate(Bundle savedInstanceState) { 
  
  
  super.onCreate(savedInstanceState); 
  
  
  // 
  确定界面的布局 
  
 AbsoluteLayout abslayout= 
  new AbsoluteLayout ( 
  this); 
  
 setContentView(abslayout); 
  
  
  // 
  创建一个button按钮 
  
 Button btn1 =  
  new Button( 
  this); 
  
 btn1.setText(” 
  this is a button”); 
  
 btn1.setId(1); 
  
  
  // 
  确定这个控件的大小和位置 
  
 AbsoluteLayout.LayoutParams lp1 = 
  
  
  new AbsoluteLayout.LayoutParams( 
  
 ViewGroup.LayoutParams.WRAP_CONTENT, 
  
 ViewGroup.LayoutParams.WRAP_CONTENT, 
  
 0,100); 
  
 abslayout.addView(btn1, lp1 ); 
  
 
  
} 
 

 

一个界面可以布置一个布局，可以多个布局一起设计

 

 
  public  
  void onCreate(Bundle savedInstanceState) { 
  
     
  super.onCreate(savedInstanceState); 
  
 
  
     
  // 
  设置界面的布局 
  
    RelativeLayout relativeLayout =  
  new RelativeLayout( 
  this); 
  
    setContentView(relativeLayout); 
  
 
  
     
  // 
  添加一个AbsoluteLayout子布局,并给这个布局添加一个button 
  
    AbsoluteLayout abslayout= 
  new AbsoluteLayout ( 
  this); 
  
    abslayout.setId(11); 
  
    Button btn1 =  
  new Button( 
  this); 
  
    btn1.setText(” 
  this is a abslayout button”); 
  
    btn1.setId(1); 
  
    AbsoluteLayout.LayoutParams lp0 =  
  new AbsoluteLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 
  
    ViewGroup.LayoutParams.WRAP_CONTENT,100,0); 
  
    abslayout.addView(btn1, lp0 ); 
  
     
  // 
  将这个子布局添加到主布局中 
  
    RelativeLayout.LayoutParams lp1 =  
  new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
  
    lp1.addRule(RelativeLayout.ALIGN_PARENT_TOP); 
  
    lp1.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE); 
  
    relativeLayout.addView(abslayout ,lp1); 
  
 
  
     
  // 
  再添加一个子布局 
  
    RelativeLayout relativeLayout1 =  
  new RelativeLayout( 
  this); 
  
    Button btn2 =  
  new Button( 
  this); 
  
    btn2.setText(” 
  this is a relativeLayout1 button”); 
  
    btn2.setId(2); 
  
    RelativeLayout.LayoutParams lp2 =  
  new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
  
    lp2.addRule(RelativeLayout.ALIGN_PARENT_TOP); 
  
    lp2.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE); 
  
    relativeLayout1.addView(btn2 ,lp2); 
  
 
  
     
  // 
  将这个布局添加到主布局中 
  
    RelativeLayout.LayoutParams lp11 =  
  new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
  
    lp11.addRule(RelativeLayout.BELOW ,11); 
  
    relativeLayout.addView(relativeLayout1 ,lp11); 
  
}