安卓-操作资源文件

main.xml代码如下：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/mytext"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></LinearLayout>

package org.lxh.demo;import java.io.IOException;import java.io.InputStream;import java.util.Scanner;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.content.res.Resources;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnFocusChangeListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;public class Hello extends Activity {	private TextView mytext = null;	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState); // 生命周期方法		super.setContentView(R.layout.main); // 设置要使用的布局管理器		this.mytext = (TextView) super.findViewById(R.id.mytext);		Resources res = super.getResources();// 资源操作类		InputStream input = res.openRawResource(R.raw.mybook);//读取资源id		Scanner scan = new Scanner(input);//		StringBuffer buf = new StringBuffer();//用于接收数据		while (scan.hasNext()) {			buf.append(scan.next()).append("\n");		}		scan.close();		try {			input.close();		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}		this.mytext.setText(buf.toString());	}}