Android数据储存之 网络存储数据

somebodyoneday 2017-02-15

Android Async HTTP

android-async-http最简单基础的使用只需如下步骤:

  1. 创建一个AsyncHttpClient;

  2. (可选的)通过RequestParams对象设置请求参数;

  3. 调用AsyncHttpClient的某个get方法,传递你需要的(成功和失败时)callback接口实现,一般都是匿名内部类,实现了AsyncHttpResponseHandler,类库自己也提供许多现成的response handler,你一般不需要自己创建

AsyncHttpClient类通常用在android应用程序中创建异步GET, POST, PUT和DELETE HTTP请求,请求参数通过RequestParams实例创建,响应通过重写匿名内部类ResponseHandlerInterface方法处理。

如下代码展示了使用AsyncHttpClient与AsyncHttpResponseHandler的基础操作:

AsyncHttpClient client = new AsyncHttpClient();
        String path = "";
        RequestParams params = new RequestParams();
        params.put("username", username);
        params.put("password", password);
        client.get(path, params, new AsyncHttpResponseHandler() {
            @Override
            public void onSuccess(int i, Header[] headers, byte[] bytes) {

            }

            @Override
            public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {

            }
        });
try {
    JSONObject jsonObject = new JSONObject();
    jsonObject.put("username", "ryantang");
    StringEntity stringEntity = new StringEntity(jsonObject.toString());
    client.post(mContext, "http://api.com/login", stringEntity, "application/json", new JsonHttpResponseHandler(){
        @Override
        public void onSuccess(JSONObject jsonObject) {
            super.onSuccess(jsonObject);
        }
    });
} catch (JSONException e) {
    e.printStackTrace();
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
}

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