如何读取assets文件夹中的txt文件

下面通过一个例子讲解读取资源文件显示在ScrollView当中:
1.ReadAsset.java文件:

package com.example.ReadAsset;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import java.io.IOException;
import java.io.InputStream;

public class ReadAsset extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.read_asset);

		try {
//Return an AssetManager instance for your application's package
			InputStream is = getAssets().open("index.txt");
			int size = is.available();

			// Read the entire asset into a local byte buffer.
			byte[] buffer = new byte[size];
			is.read(buffer);
			is.close();

			// Convert the buffer into a string.
			String text = new String(buffer, "GB2312");

			// Finally stick the string into the text view.
			TextView tv = (TextView) findViewById(R.id.text);
			tv.setText(text);
		} catch (IOException e) {
			// Should never happen!
			throw new RuntimeException(e);
		}
	}
}

2. read_asset.xml文件

<?xml version="1.0" encoding="utf-8"?>
<ScrollView android:layout_width="fill_parent"
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_height="fill_parent" android:paddingTop="50dip">
	<TextView android:id="@+id/text" android:layout_width="fill_parent"
		android:layout_height="wrap_content" android:textStyle="normal" />
</ScrollView>

3.然后在工程里面新建一个assets文件夹,随便放一个index.txt的文件在其中,运行
  Ctrl+F11进行测试即可;