如何读取assets文件夹中的txt文件

2010-06-20

如何读取assets文件夹中的txt文件

博客分类：
• Android(网络相关)

AndroidJavaOSXML

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./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;

分享到：

如何获取屏幕分辨率 | 横、竖屏幕动态切换(layout-land 和layout ...