Utils.java

/*
 * Copyright (C) 2015 Baidu, Inc. All Rights Reserved.
 */
package dodola.hotfix;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import android.content.Context;

/**
 * Created by sunpengfei on 15/11/4.
 */
public class Utils {
    private static final int BUF_SIZE = 2048;

    public static boolean prepareDex(Context context, File dexInternalStoragePath, String dex_file) {
        BufferedInputStream bis = null;
        OutputStream dexWriter = null;

        try {
            bis = new BufferedInputStream(context.getAssets().open(dex_file));
            dexWriter = new BufferedOutputStream(new FileOutputStream(dexInternalStoragePath));
            byte[] buf = new byte[BUF_SIZE];
            int len;
            while ((len = bis.read(buf, 0, BUF_SIZE)) > 0) {
                dexWriter.write(buf, 0, len);
            }
            dexWriter.close();
            bis.close();
            return true;
        } catch (IOException e) {
            if (dexWriter != null) {
                try {
                    dexWriter.close();
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                }
            }
            if (bis != null) {
                try {
                    bis.close();
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                }
            }
            return false;
        }
    }
}