Question

如何读取assets文件夹中的txt文件

Answer 1

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:

Java代码
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

Java代码
<?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;