实现在dialog中输入文段，点击新增后gridview中会增加新的item，

item的字段为dialog中的输入文本

 dialog.setOnClickListener(R.id.add_refuse, new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                EditText et_message = (EditText) dialog.getId(R.id.et_message);
                String newreason = et_message.getText().toString();
                if (TextUtils.isEmpty(newreason)) {
                    Toast(mContext, "尚未填写新增原因", 2);
                    return;
                }
                GetTagResBean.DataBean dataBean = new GetTagResBean.DataBean();
                dataBean.setTagName(newreason);
                addTagResBeanLCommonAdapter.add(dataBean);
                addTagResBeanLCommonAdapter.notifyDataSetChanged();
            }

其中dataBean为本地声明的实体类对象

GetTagResBean.DataBean dataBean = new GetTagResBean.DataBean();

声明的对象格式要与gridview的adapter一致

private LCommonAdapter<GetTagResBean.DataBean> addTagResBeanLCommonAdapter;