NotificationManager notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Notification notification = new Notification(icon, tickerText, System.currentTimeMillis());
//System.currentTimeMillis()代表立即显示，这里是设置显示的时间		
		Intent intent = new Intent(this,MainActibity.class);
		
		PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0);//这里的intent是如果这个notification被点击后返回到MainActivity页面
		
		notification.setLatestEventInfo(this, title, content, contentIntent);
		
		notificationManager.notify(R.layout.notification, notification);//第一个是notification的id,可以自己指定

所有的Notification都是由NotificationManager来管理，所以，第一步应该得到一个NotificationManager,以便管理这个Activity.

Notification notification = new Notification();
		notification.defaults = Notification.DEFAULT_VIBRTE;
//当Notification出现的时候便随着振动

notification.defaults = Notification.DEFAULT_SOUND；//当Notification出现的时候便随着音乐

notification.defaults = Notification.DEFAULT_ALL；//当Notification出现的时候便随着音乐和振动

//下面是自定义的一个notification
nf =new Notification(R.drawable.icon,"带进度条的提醒",System.currentTimeMillis()) ;   
nf.icon = R.drawable.icon;   
       
nf.contentView= new RemoteViews(this.getPackageName(),R.layout.notification);  //RemoteViews: 一个可以在其他应用进程中运行的类，是构造AppWidget的核心。目前，OPhone平台上的RemoteViews支持的布局(Layout)类暂时只有FrameLayout, LinearLayout和RelativeLayout，并且不支持自定义类
 
nf.contentView.setProgressBar(R.id.ProgressBar01, 100, 0, false);   
nf.contentIntent=PendingIntent.getActivity( this, 0, new Intent(this,remoteview.class) ,0);  

 
    final String FILE_PATH="/data/data/com.android.hymake.ecard/";
    final String FILE_NAME="CARD.XML";
    final String TEXT_ENCODING = "UTF-8";
    
    File file;
    FileOutputStream out;
    FileInputStream in;
    String display;
    
    //生成保存本机名片的XML文件并显示内容
    private void generateLocalECardXml(){
    	try {
			String infoToWriter = getLocalECardInfo();
			out = this.openFileOutput(FILE_NAME, MODE_PRIVATE);
			out.write(infoToWriter.getBytes());
			Log.i(TAG, "filewrite:"+infoToWriter);
			out.close();
			Log.i(TAG, "create local ecard xml file successfully!");
			
			in = this.openFileInput(FILE_NAME);
			byte[] temp = new byte[1024];
			int length = in.read(temp);
			
			display = EncodingUtils.getString(temp, TEXT_ENCODING);
			Log.i(TAG, "fileread:"+display);
			in.close();
			Toast.makeText(Ecard.this, display, Toast.LENGTH_LONG).show();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			Log.e(TAG, e.getMessage());
		}
    }
    
    //读取本机名片并生成XML形式的实符串
    private String getLocalECardInfo() throws Exception{
    	StringBuffer xmlStr;
    	//获取名片表中第一条记录
    	mCardsCursor = mDbHelper.get(1, CardsDbAdapter.DATABASE_TB_CARDS);
    	if (mCardsCursor==null){
        	setListAdapter(null);
        	Log.e(TAG,"本机名片不在!");
        	throw new Exception("本机名片不在!");
    	}
    	xmlStr = new StringBuffer("<?xml version=\"1.0\" encoding=\"utf-8\"?><cardinfo>");
    	xmlStr.append("<username>").append(getNotNullStr(mCardsCursor.getString(1)))
    			.append("</username");
    	xmlStr.append("<phonenumber>").append(getNotNullStr(mCardsCursor.getString(3)))
				.append("</phonenumber>");
    	xmlStr.append("<useraddress>").append(getNotNullStr(mCardsCursor.getString(4)))
				.append("</useraddress>");
    	xmlStr.append("<usernote>").append(getNotNullStr(mCardsCursor.getString(5)))
				.append("</usernote>");
    	xmlStr.append("</cardinfo>");
    	return xmlStr.toString();
    }
    
    public static String getNotNullStr(String str){
    	return null==str?"":str;
    }
   

import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;

/**
 * This example show how to use raw files from /raw folder
 * @author FaYnaSoft Labs
 *
 */
public class Main extends Activity {
	private static String LOG_APP_TAG = "tag";

	private EditText editField;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        editField = (EditText) findViewById(R.id.textId);

        findViewById(R.id.btn).setOnClickListener(new View.OnClickListener() {

			@Override
			public void onClick(View v) {
				InputStream inputStream = null;
				try {
					inputStream = getResources().openRawResource(R.raw.hello_world);
					byte[] reader = new byte[inputStream.available()];
					while (inputStream.read(reader) != -1) {}
					editField.setText(new String(reader));
					editField.setSelection(editField.getText().length());
				} catch(IOException e) {
					Log.e(LOG_APP_TAG, e.getMessage());
				} finally {
					if (inputStream != null) {
						try {
							inputStream.close();
						} catch (IOException e) {
							Log.e(LOG_APP_TAG, e.getMessage());
						}
					}
				}
			}
		});
    }
}

 InputStream inputStream = getResources().openRawResource(R.raw.rawresource);