一、getResources().getAssets的时候assets文件放哪个目录呢？放main下面。

 二、使用示例，读取raw文件里面的数据放byte数组里面，然后显示。

1、app\src\main\java\com\wfh\canvasdemo\DataUtil.java

package com.wfh.canvasdemo;

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

import android.content.Context;

public class DataUtil {
	private byte[] image;
	public static String strarry1[] = { "01_00_00.raw", "01_00_01.raw",
			"01_00_02.raw", "01_00_03.raw", "01_00_04.raw", "01_00_05.raw",
			"01_00_06.raw", "01_00_07.raw", "01_00_08.raw", "01_00_09.raw",
			"01_00_10.raw", "01_00_11.raw", "01_00_12.raw", "01_00_13.raw",
			"01_00_14.raw", "01_00_15.raw", "01_00_16.raw", "01_00_17.raw",
			"01_00_18.raw", "01_00_19.raw", "01_00_20.raw", "01_00_21.raw",
			"01_00_22.raw", "01_00_23.raw", "01_00_24.raw", "01_00_25.raw",
			"01_00_26.raw", "01_00_27.raw", "01_00_28.raw", "01_00_29.raw",
			"01_00_30.raw", "01_00_31.raw", "01_00_32.raw", "01_00_33.raw" };
	public static String strarry2[] = { "02_00_00.raw", "02_00_01.raw",
			"02_00_02.raw", "02_00_03.raw" };

	/**
	 * @param �������ֽ�����
	 * @param inStream
	 * @return byte[]
	 * @throws Exception
	 */
	private byte[] readStream(InputStream inStream) throws Exception {
		//byte[] buffer = new byte[15600];
		byte[] buffer = new byte[35600];
		int len = -1;
		ByteArrayOutputStream outStream = new ByteArrayOutputStream();
		while ((len = inStream.read(buffer)) != -1) {
			outStream.write(buffer, 0, len);
		}
		byte[] data = outStream.toByteArray();
		outStream.close();
		inStream.close();
		return data;
	}

	public  byte[] setRawData(Context context, String fileName)
			throws Exception {
		try {
			image = null;
			InputStream inputStream = context.getResources().getAssets()
					.open(fileName);
			image = readStream(inputStream);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return image;
	}
}

  2、调用

   3、效果图