activity 中写入布局文件

package com.android.demo;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.ScrollView;
import android.widget.TextView;

/* HeaderContentFooterGUI
*
* Create a sample GUI with a header bar, scroll-able content and a footer
*
* (C) 2011 Radu Motisan, radu.motisan@gmail.com
* www.pocketmagic.net
* All rights reserved.
*/

public class MyTestActivity extends Activity implements OnClickListener{

final static int		idTopLayout = Menu.FIRST + 100,
idBack 		= Menu.FIRST + 101,
idBotLayout	= Menu.FIRST + 102;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

//Hide titlebar
requestWindowFeature(Window.FEATURE_NO_TITLE);

//Create our top content holder
RelativeLayout global_panel = new RelativeLayout (this);
global_panel.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
global_panel.setGravity(Gravity.FILL);

// +++++++++++++ TOP COMPONENT: the header
RelativeLayout ibMenu = new RelativeLayout(this);
ibMenu.setId(idTopLayout);
ibMenu.setBackgroundDrawable(getResources().getDrawable(R.drawable.line));
int ibMenuPadding = (int) 6;
ibMenu.setPadding(ibMenuPadding,ibMenuPadding,ibMenuPadding,ibMenuPadding);
RelativeLayout.LayoutParams topParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
topParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
global_panel.addView(ibMenu,topParams);
// textview in ibMenu : card holder
TextView cTV = new TextView(this);
cTV.setText("Header");
cTV.setTextColor(Color.rgb(255,255,255));
cTV.setTextSize(18);
cTV.setTypeface(Typeface.create("arial", Typeface.BOLD));
RelativeLayout.LayoutParams lpcTV = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lpcTV.addRule(RelativeLayout.CENTER_IN_PARENT);
ibMenu.addView(cTV, lpcTV);
// cancel button in ibMenu
Button m_bCancel = new Button(this);
m_bCancel.setId(idBack);
m_bCancel.setOnClickListener((OnClickListener) this);
m_bCancel.setText("Cancel");
m_bCancel.setTextSize(12);
m_bCancel.setTypeface(Typeface.create("arial", Typeface.NORMAL));
RelativeLayout.LayoutParams lpbCancel =
new RelativeLayout.LayoutParams(100,50);//LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lpbCancel.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
lpbCancel.addRule(RelativeLayout.CENTER_VERTICAL);
ibMenu.addView(m_bCancel, lpbCancel);

// +++++++++++++ BOTTOM COMPONENT: the footer
RelativeLayout ibMenuBot = new RelativeLayout(this);
ibMenuBot.setId(idBotLayout);
ibMenuBot.setBackgroundDrawable(getResources().getDrawable(R.drawable.line));
ibMenuBot.setPadding(ibMenuPadding,ibMenuPadding,ibMenuPadding,ibMenuPadding);
RelativeLayout.LayoutParams botParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
botParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
global_panel.addView(ibMenuBot,botParams);
// textview in ibMenu : card holder
TextView cTVBot = new TextView(this);
cTVBot.setText("www.pocketmagic.net");
cTVBot.setTextColor(Color.rgb(179,116,197));
cTVBot.setTextSize(12);
cTVBot.setTypeface(Typeface.create("arial", Typeface.BOLD));
RelativeLayout.LayoutParams lpcTVBot = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lpcTVBot.addRule(RelativeLayout.CENTER_IN_PARENT);
ibMenuBot.addView(cTVBot, lpcTVBot);

// +++++++++++++ MIDDLE COMPONENT: all our GUI content
LinearLayout midLayout = new LinearLayout (this);
midLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
midLayout.setOrientation(LinearLayout.VERTICAL);
RelativeLayout.LayoutParams midParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
midParams.addRule(RelativeLayout.ABOVE,ibMenuBot.getId());
midParams.addRule(RelativeLayout.BELOW,ibMenu.getId());
global_panel.addView(midLayout,midParams );
//scroll - so our content will be scrollable between the header and the footer
ScrollView vscroll = new ScrollView(this);
vscroll.setFillViewport(false);
midLayout.addView(vscroll);
//panel in scroll: add all controls/ objects to this layout
LinearLayout m_panel = new LinearLayout (this);
m_panel.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
m_panel.setOrientation(LinearLayout.VERTICAL);
vscroll.addView(m_panel);

Button b[] = new Button[10];
for (int i=0;i<10;i++) {
b[i] = new Button(this);
b[i].setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
b[i].setText("But "+i);
m_panel.addView(b[i]);
}
setContentView(global_panel);
}

public void onClick(View arg0) {
// TODO Auto-generated method stub
int id = arg0.getId();

// If cancel is pressed, close our app
if (id == idBack) finish();

}
}