Android中Okhttp进行get和post提交及数据请求的基本使用

来源：互联网发布：算法流程图编辑：程序博客网时间：2024/06/04 18:01

编写不易，如有转载，请声明出处: 梦回河口：http://blog.csdn.net/zxc514257857/article/details/60501821

get方式异步请求数据

String url = Url.IPA+ "/" + Url.IPB;Request request = new Request.Builder()        .url(url)        .build();OkHttpClient client = new OkHttpClient();client.newCall(request).enqueue(new Callback() {    @Override    public void onFailure(Request request, IOException e) {        Log.i(TAG, "网络请求失败");    }    @Override    public void onResponse(Response response) throws IOException {        if (response.isSuccessful()) {            String jsonString = response.body().string();            Gson gson = new Gson();            mMarketList = gson.fromJson(jsonString,                    new TypeToken<List<MarketBean>>() {                    }.getType());            runOnUiThread(new Runnable() {                @Override                public void run() {                    mListView.setAdapter(mMarketListAdapter);                }            });        }    }});-------------------------------------------------------//请求到数据后在ListVIew里面显示private MarketListAdapter mMarketListAdapter = new MarketListAdapter();class MarketListAdapter extends BaseAdapter {    @Override    public int getCount() {        if (mMarketList != null) {            return mMarketList.size();        }        return 0;    }    @Override    public Object getItem(int position) {        if (mMarketList != null) {            return mMarketList.get(position);        }        return null;    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder holder;        if (convertView == null) {            convertView = View.inflate(SecondActivity.this, R.layout.id_item, null);            holder = new ViewHolder(convertView);            holder.mTextView = (TextView) convertView.findViewById(textView);        } else {            holder = (ViewHolder) convertView.getTag();        }        if (mMarketList != null && holder != null) {            String mName = mMarketList.get(position).name;            String mId = mMarketList.get(position).id;                  holder.mTextView.setText(name + ":" + id);        }        return convertView;    }    class ViewHolder {        TextView mTextView;    }}

post方式同步提交表单数据（键值对数据）

String url = Url.IPA+ "/" + Url.IPB;RequestBody formBody = new FormEncodingBuilder()        .add("id", mId)        .add("name", mName)        .        .build();Request request = new Request.Builder()        .url(url)        .post(formBody)        .build();try {    Response response = client.newCall(request).execute();    if (response.isSuccessful()) {        Log.i("success",response.body().string());    } else {        throw new IOException("Unexpected code " + response);    }} catch (IOException e) {    e.printStackTrace();}

注意

进行网络访问前一定要先添加网络访问权限
在进行数据请求或数据提交时先看清接口文档中给的Url，在浏览器上看一下网址请求出来的Json数据是什么格式的，带callBack的要用字符串的形式截取掉callBack｛｝然后再进行请求
如果是请求数据，需要创建Bean类，可以通过GsonFormat插件进行快速创建，并可以通过导入Gson库进行快速解析数据
如果使用Okhttp这个网络请求工具采用jar包的形式的话，需要导入两个jar包，除了Okhttp.jar之外，还要导入OkIo.jar

———-因本人才疏学浅，如博客或Demo中有错误的地方请大家随意指出，与大家一起讨论，共同进步，谢谢！———-

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