package com.example.helloworld01;//包名

import java.util.ArrayList;

import java.util.List;

import android.os.Bundle;

import android.app.Activity;

import android.graphics.Color;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.RelativeLayout;

import android.widget.RelativeLayout.LayoutParams;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

// 定义线性布局

LinearLayout linearLayout = new LinearLayout(this);

linearLayout.setOrientation(LinearLayout.VERTICAL);

// 定义相对布局

RelativeLayout relativeLayout = new RelativeLayout(this);

relativeLayout.setBackgroundColor(Color.GRAY);

// 定义两个按钮

Button button1 = new Button(this);

button1.setText("按钮1");

Button button2 = new Button(this);

button2.setText("按钮2");

// 定义列表控件

ListView listView = new ListView(this);

listView.setAdapter(new ArrayAdapter(this,

android.R.layout.simple_expandable_list_item_1, getData()));

// 想要按钮2在右边需要定义布局参数LayoutParams

RelativeLayout.LayoutParams rLayoutParams = new RelativeLayout.LayoutParams(

LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

// 定义规则：在相对布局右边

rLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);

// 将按钮1加入相对布局

relativeLayout.addView(button1);

// 将按钮2和布局参数加入相对布局

relativeLayout.addView(button2, rLayoutParams);

// 将相对布局加入线性布局

linearLayout.addView(relativeLayout);

// 将列表加入线性布局

linearLayout.addView(listView);

setContentView(linearLayout);

}

private List getData() {

List liStrings = new ArrayList();

for (int i = 0; i < 9; i++) {

liStrings.add("列表"+i);

}

return liStrings;

}

}

结果：