目前好多APP都添加了给评分评价等功能，点击后都会跳转到手机默写助手当前APP下载界面，实现过程如下：

try {
    Uri uri = Uri.parse("market://details?id="
      + context.getPackageName());//需要评分的APP包名
    Intent intent5 = new Intent(Intent.ACTION_VIEW, uri);
    intent5.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent5);
   } catch (Exception e) {
    // TODO Auto-generated catch block

    Toast.makeText(getActivity(), R.string.notappstore, 0).show();
   }