FileUtil.java

package com.amlogic.tzr.charismatic_yichang.Tool;

import android.os.Environment;

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

public class FileUtil {

	public static final String ROOT = Environment.getExternalStorageDirectory().getPath() + "/nicehair/";
	public static final String CAMERA = Environment.getExternalStorageDirectory().getPath() + "/DCIM/Camera/";
	public static final String CACHE_IMG ="/cache/images/";
	 /**
     * 应用日志目录文件
     */
    public static String APP_LOG_PATH = ROOT + "log/";

	/** 
	 * 日志文件路径 
	 */
    public static String LOGFILE = APP_LOG_PATH + "log.txt";
    
    /**
     * 读取输入流数据
     *
     * @param inStream
     * @return
     */
    public static byte[] read(InputStream inStream) throws Exception {
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        while ((len = inStream.read(buffer)) != -1) {
            outStream.write(buffer, 0, len);
        }
        inStream.close();
        return outStream.toByteArray();
    }
    /**
	 * 判断SD是否可以
	 * 
	 * @return
	 */
	public static boolean isSdcardExist() {
		if (Environment.getExternalStorageState().equals(
				Environment.MEDIA_MOUNTED)) {
			return true;
		}
		return false;
	}

	/**
	 * 创建根目录
	 * 
	 * @param path
	 *            目录路径
	 */
	public static void createDirFile(String path) {
		File dir = new File(path);
		if (!dir.exists()) {
			dir.mkdirs();
		}
	}

	/**
	 * 创建文件
	 * 
	 * @param path
	 *            文件路径
	 * @return 创建的文件
	 */
	public static File createNewFile(String path) {
		File file = new File(path);
		if (!file.exists()) {
			try {
				file.createNewFile();
			} catch (IOException e) {
				return null;
			}
		}
		return file;
	}
}