/***從asset複製檔案到記憶體****/
    private void copyByAssetsApk() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    System.out.println("==============從asset複製檔案到記憶體==============copyAssets============================.");
                    String newPath = FileUtils.DIR_apk;
                    File files = new
 
 File(newPath);
                    if (!files.exists()) {
                        files.mkdirs();
                    }
                    File file = new File(files, "Server.apk");
                    InputStream is = null;
                    try {
                        AssetManager manager = getAssets();
                        if
 
 (manager == null) return;
                        is = manager.open("Server.apk");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    if (is == null) return;
                    FileOutputStream fos = new FileOutputStream(file);
                    byte
 
[] buffer = new byte[1024];
                    int byteCount = 0;
                    while ((byteCount = is.read(buffer)) != -1) {// 迴圈從輸入流讀取
                        // buffer位元組
                        fos.write(buffer, 0, byteCount);// 將讀取的輸入流寫入到輸出流
                    }
                    fos.flush();// 重新整理緩衝區
                    is.close();
                    fos.close();
                    System.out.println("==============從asset複製檔案到記憶體==============copyAssets  success============================.");
                    UpdateUtils.getIntance().installServerApk(file);
                } catch (Exception e) {
                    System.out.println("==============從asset複製檔案到記憶體==============copyAssets  error============================.");
                    e.printStackTrace();
                }
            }
        }).start();
    }