Android Open Source - AndroidIPQQWry Prepare File

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License

The source code is released under:

Apache License

Java Source Code

package com.hu.qqwryand;
// w w  w. ja v  a  2s. c  o  m
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import com.hu.andun7z.AndUn7z;

import android.content.Context;
import android.os.Handler;

public class PrepareFile {

  Handler handler = null;
  String appPath;
  String filePath;
  Context context = null;

  public PrepareFile(Handler handler,Context context, String appPath) {
    this.handler = handler;
    this.appPath = appPath;
    this.filePath = appPath + Consts.fileName;
    this.context = context;
  }

  public void start() {
    File file = new File(filePath);
    if (file.exists()){// && MD5(file).equalsIgnoreCase(Consts.fileMD5)) {
      handler.sendEmptyMessage(Consts.msgFileOk);//?????????????????
    } else {//???????????????????
      handler.sendEmptyMessage(Consts.msgHandleFileStart);
      new Thread() {

        @Override
        public void run() {
          try {
            moveAsset();  //move from assets
            AndUn7z.extract7z(appPath + Consts.assetName, appPath);  //extract file
            new File(appPath + Consts.assetName).delete(); //delete temp
          } catch (Exception e) {
            handler.sendEmptyMessage(Consts.msgHandleFileError);
            e.printStackTrace();
          }
          handler.sendEmptyMessage(Consts.msgHandleFileEnd);
        }
      }.start();
    }
  }

  private void moveAsset() throws IOException { // ???????asset?????????
    InputStream inputStream = context.getAssets().open(Consts.assetName);
    FileOutputStream fileOutputStream = new FileOutputStream(appPath + Consts.assetName);
    int length = -1;
    byte[] buffer = new byte[Consts.bufferSize];
    while ((length = inputStream.read(buffer)) != -1) {
      fileOutputStream.write(buffer, 0, length);
    }
    fileOutputStream.flush();
    fileOutputStream.close();
    inputStream.close();
  }

//  private String MD5(File file) { // ????????MD5?
//    MessageDigest messageDigest = null;
//    FileInputStream fileInStream = null;
//    byte buffer[] = new byte[Consts.bufferSize];
//    int length = -1;
//    try {
//      messageDigest = MessageDigest.getInstance("MD5");
//      fileInStream = new FileInputStream(file);
//      while ((length = fileInStream.read(buffer, 0, Consts.bufferSize)) != -1) {
//        messageDigest.update(buffer, 0, length);
//      }
//      fileInStream.close();
//    } catch (Exception e) {
//      e.printStackTrace();
//      return null;
//    }
//    BigInteger bigInt = new BigInteger(1, messageDigest.digest());
//    return bigInt.toString(16);
//  }
}

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