怎么拿到自定义dialog弹窗的EditText

  //创建相册的弹窗
    public void createPhoto() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        View view = getLayoutInflater().inflate(R.layout.dialog_edittext, null);
        //R.layout.dialog_edittext为自定义布局
        final EditText editText = (EditText) view.findViewById(R.id.et_account);//拿到输入框
        builder.setTitle("创建相册")
                .setMessage("是否创建相册")
                .setView(view)//设置自定义布局
                //添加确定按钮和点击事件
                .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        //edittext 数据存储到SQLite


                        String str = editText.getText().toString().trim();
                        Toast.makeText(Photo.this, str, Toast.LENGTH_SHORT).show();

                    }
                })
                //添加取消按钮和点击事件
                .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                })
                .create();
        builder.show();
    }