android 中动态创建控件

原文出处：http://www.oschina.net/code/snippet_163910_6212

代码片段(2)[全屏查看所有代码]

1. [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 }

2. [代码]一个界面可以布置一个布局，可以多个布局一起设计     跳至 [1] [2] [全屏预览]

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 }