android 中動態創建控件

 

 
          public  
          void onCreate(Bundle savedInstanceState) { 
          
  
          super.onCreate(savedInstanceState); 
          
  
          // 
          確定界面的布局 
          
 AbsoluteLayout abslayout= 
          new AbsoluteLayout ( 
          this); 
          
 setContentView(abslayout); 
          
  
          // 
          創建一個button按鈕 
          
 Button btn1 =  
          new Button( 
          this); 
          
 btn1.setText(” 
          this is a button”); 
          
 btn1.setId(1); 
          
  
          // 
          確定這個控件的大小和位置 
          
 AbsoluteLayout.LayoutParams lp1 = 
          
  
          new AbsoluteLayout.LayoutParams( 
          
 ViewGroup.LayoutParams.WRAP_CONTENT, 
          
 ViewGroup.LayoutParams.WRAP_CONTENT, 
          
 0,100); 
          
 abslayout.addView(btn1, lp1 ); 
          
 
          
} 
         

 

一個界面可以布置一個布局，可以多個布局一起設計

 

 
          public  
          void onCreate(Bundle savedInstanceState) { 
          
     
          super.onCreate(savedInstanceState); 
          
 
          
     
          // 
          設置界面的布局 
          
    RelativeLayout relativeLayout =  
          new RelativeLayout( 
          this); 
          
    setContentView(relativeLayout); 
          
 
          
     
          // 
          添加一個AbsoluteLayout子布局,並給這個布局添加一個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 ); 
          
     
          // 
          將這個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); 
          
 
          
     
          // 
          再添加一個子布局 
          
    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); 
          
 
          
     
          // 
          將這個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); 
          
}