第五节总结

总结

这一节主要实现聊天界面与自动机器人之间的对话。使用ListView实现，根据不同的type决定显示左或者右的聊天界面

1.实现

实现BaseAdapter

public class ChartListAdaoter extends BaseAdapter {
    private Context mContext;
    private List<ChartLsitData> chartLsitDatas;
    private LayoutInflater inflater;
    private ChartLsitData data;

//定义type
    private static final int left_type=1;
    private static final int right_type=2;

    public ChartListAdaoter(Context mContext,List<ChartLsitData> chartLsitDatas ) {
        this.chartLsitDatas=chartLsitDatas;
        inflater=LayoutInflater.from(mContext);
    }

    @Override
    public int getCount() {
        return chartLsitDatas.size();
    }

    @Override
    public Object getItem(int position) {
        return chartLsitDatas.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int type = getItemViewType(position);
        leftViewHolder leftViewHolder = null;
        rightViewHolder rightViewHolder = null;
        if (convertView == null) {
            switch (type) {
                case left_type:
                    leftViewHolder = new leftViewHolder();
                    convertView = inflater.inflate(R.layout.left, null);
                    leftViewHolder.textView_left = (TextView) convertView.findViewById(R.id.left_tv);
                    convertView.setTag(leftViewHolder);
                    break;
                case right_type:
                    rightViewHolder = new rightViewHolder();
                    convertView = inflater.inflate(R.layout.right, null);
                    rightViewHolder.textView_right = (TextView) convertView.findViewById(R.id.right_tv);
                    convertView.setTag(rightViewHolder);
                    break;
            }
        } else {
            switch (type) {
                case left_type:
                    leftViewHolder = (leftViewHolder) convertView.getTag();
                    break;
                case right_type:
                    rightViewHolder = (rightViewHolder) convertView.getTag();
                    break;
            }

        }

        switch (type) {
            case left_type:
                leftViewHolder.textView_left.setText(data.getText());
                break;
            case right_type:
                rightViewHolder.textView_right.setText(data.getText());
                break;
        }

        return convertView;
    }
   //获取type
    @Override
    public int getItemViewType(int position) {
         data=chartLsitDatas.get(position);
        int view_type=data.getType();
        return  view_type;
    }

    @Override
    public int getViewTypeCount() {
        //不知道为什么
        return 3;
    }
}
class leftViewHolder{

    public TextView textView_left;
}
class rightViewHolder{
    public TextView textView_right;
}

ChartLsitData 类

public class ChartLsitData {
    private int type;
    private String text;

    public ChartLsitData(int type, String text) {
        this.type = type;
        this.text = text;
    }


    public int getType() {
        return type;
    }

    public void setType(int type) {
        this.type = type;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
}

主界面实现

public class ButlreFragment extends Fragment implements View.OnClickListener{

    private ListView chartliseView;
    private ChartListAdaoter adapter;
    private EditText message_et;
    private Button Send_bu;
    private ChartLsitData chartLsitData;
    private List<ChartLsitData> chartLsitDatas;
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.butlerlayout, container, false);
        chartLsitDatas=new ArrayList<>();
        findView(view);

//刚进入时显示的
        chartLsitData=new ChartLsitData(1,"欢迎");
        chartLsitDatas.add(chartLsitData);
        //通知adapter刷新
        adapter.notifyDataSetChanged();
        return view;

    }

    public void findView(View view) {
        chartliseView= (ListView) view.findViewById(R.id.chartliseView);
        message_et= (EditText) view.findViewById(R.id.message_et);
        Send_bu= (Button) view.findViewById(R.id.Send_bu);
        Send_bu.setOnClickListener(this);
         adapter=new ChartListAdaoter(getActivity(),chartLsitDatas);
        chartliseView.setAdapter(adapter);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.Send_bu:
                String str=message_et.getText().toString();

                if (!TextUtils.isEmpty(str)){
                    chartLsitData=new ChartLsitData(2,str);
                    chartLsitDatas.add(chartLsitData);
                    //通知adapter刷新
                    adapter.notifyDataSetChanged();
                    //滚动到底部
                    chartliseView.setSelection(chartliseView.getBottom());
                    String URL="http://apis.juhe.cn/mobile/get?phone="+str+"&key=7fbf0ce17daa9a2ca31626fa7c97407b";
                    RxVolley.get(URL, new HttpCallback() {
                        @Override
                        public void onSuccess(String t) {
                            L.i(t.toString());
                            prasingJSON(t);
                            super.onSuccess(t);
                        }
                    });

                }else {
                    Toast.makeText(getActivity(),"你是真的懒",Toast.LENGTH_LONG).show();
                }
                break;
        }
    }

    private void prasingJSON(String t) {
        try {
             JSONObject jsonObject=new JSONObject(t);
            int resultCode=jsonObject.getInt("resultcode");
            if (resultCode==200) {
                JSONObject jsonResult = jsonObject.getJSONObject("result");
                String name= jsonResult.getString("province");
                chartLsitData=new ChartLsitData(1,name);
                chartLsitDatas.add(chartLsitData);
                //通知adapter刷新
                adapter.notifyDataSetChanged();
                //滚动到底部
                chartliseView.setSelection(chartliseView.getBottom());
            }else {
                Toast.makeText(getActivity(),"错误",Toast.LENGTH_LONG).show();
            }

            message_et.setText("");

        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}

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