android 中动态创建控件

首先要却这个界面的布局，是AbsoluteLayout，RelativeLayout还是其他，然后就可以再里面添加控件了：

[代码] [Java]代码

01	public 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

}

[代码] 一个界面可以布置一个布局，可以多个布局一起设计

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01	public 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

}