您的位置:首页 > 移动开发 > Android开发

android 如何使用代码实现嵌套布局

2011-11-11 07:18 1456 查看

android 如何使用代码实现嵌套布局。

就是实现这样的布局。XML中是这么写的
<LinearLayout android:layout_width="fill_parent"
android:id="@+id/linearLayout" android:layout_height="fill_parent"
android:orientation="horizontal" android:paddingTop="50dp">

<LinearLayout android:layout_width="120dp"
android:layout_height="fill_parent" android:orientation="vertical">

<ListView android:id="@+id/dishTypeList" android:background="#C6E2FF"
android:layout_width="120dp" android:layout_height="380dp"
android:headerDividersEnabled="true" android:cacheColorHint="#00000000" />
<LinearLayout android:layout_width="fill_parent"
android:layout_height="50dp" android:orientation="horizontal">
<Button android:id="@+id/scollDown" android:layout_width="60dp"
android:layout_height="wrap_content" android:text="向下" />
<Button android:id="@+id/scollUp" android:layout_width="60dp"
android:layout_height="wrap_content" android:text="向上" />

</LinearLayout>

</LinearLayout>

请问这段XML,在android中用JAVA代码如何实现。!


2011-2-25 13:11
最佳答案

你的问题应该是要动态生成空间吧。
下面的答案可以参考下。
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:
 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);
}


内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: