android 中动态创建控件

01public void onCreate(Bundle savedInstanceState) {

02    super.onCreate(savedInstanceState);

03    //确定界面的布局

04    AbsoluteLayout abslayout=new AbsoluteLayout (this);

05    setContentView(abslayout);

06    //创建一个button按钮

07    Button btn1 = new Button(this);

08    btn1.setText(”this is a button”);

09    btn1.setId(1);

10    //确定这个控件的大小和位置

11    AbsoluteLayout.LayoutParams lp1 =

12    new AbsoluteLayout.LayoutParams(

13    ViewGroup.LayoutParams.WRAP_CONTENT,

14    ViewGroup.LayoutParams.WRAP_CONTENT,

15    0,100);

16    abslayout.addView(btn1, lp1 );

17 

18}

一个界面可以布置一个布局，可以多个布局一起设计 

01public void onCreate(Bundle savedInstanceState) {

02    super.onCreate(savedInstanceState);

03 

04    //设置界面的布局

05    RelativeLayout relativeLayout = new RelativeLayout(this);

06    setContentView(relativeLayout);

07 

08    //添加一个AbsoluteLayout子布局,并给这个布局添加一个button

09    AbsoluteLayout abslayout=new AbsoluteLayout (this);

10    abslayout.setId(11);

11    Button btn1 = new Button(this);

12    btn1.setText(”this is a abslayout button”);

13    btn1.setId(1);

14    AbsoluteLayout.LayoutParams lp0 = newAbsoluteLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,

15    ViewGroup.LayoutParams.WRAP_CONTENT,100,0);

16    abslayout.addView(btn1, lp0 );

17    //将这个子布局添加到主布局中

18    RelativeLayout.LayoutParams lp1 = newRelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

19    lp1.addRule(RelativeLayout.ALIGN_PARENT_TOP);

20    lp1.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);

21    relativeLayout.addView(abslayout ,lp1);

22 

23    //再添加一个子布局

24    RelativeLayout relativeLayout1 = new RelativeLayout(this);

25    Button btn2 = new Button(this);

26    btn2.setText(”this is a relativeLayout1 button”);

27    btn2.setId(2);

28    RelativeLayout.LayoutParams lp2 = newRelativeLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);

29    lp2.addRule(RelativeLayout.ALIGN_PARENT_TOP);

30    lp2.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);

31    relativeLayout1.addView(btn2 ,lp2);

32 

33    //将这个布局添加到主布局中

34    RelativeLayout.LayoutParams lp11 = newRelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

35    lp11.addRule(RelativeLayout.BELOW ,11);

36    relativeLayout.addView(relativeLayout1 ,lp11);

37}