Androidx学习笔记（40）--- 使用异步HttpClient(android-async-http-master)做get提交

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发送get请求

    //创建异步的httpclient对象    AsyncHttpClient ahc = new AsyncHttpClient();    //发送get请求    ahc.get(path, new MyHandler());

注意AsyncHttpResponseHandler两个方法的调用时机

class MyHandler extends AsyncHttpResponseHandler{    //http请求成功，返回码为200，系统回调此方法    @Override    public void onSuccess(int statusCode, Header[] headers,            //responseBody的内容就是服务器返回的数据            byte[] responseBody) {        Toast.makeText(MainActivity.this, new String(responseBody), 0).show();    }    //http请求失败，返回码不为200，系统回调此方法    @Override    public void onFailure(int statusCode, Header[] headers,            byte[] responseBody, Throwable error) {        Toast.makeText(MainActivity.this, "返回码不为200", 0).show();    }}

案例代码

public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    public void get(View v){    EditText et_name = (EditText) findViewById(R.id.et_name);    EditText et_pass = (EditText) findViewById(R.id.et_pass);        final String name = et_name.getText().toString();    final String pass = et_pass.getText().toString();    String url = "http://192.168.13.13/Web/servlet/CheckLogin?name=" + URLEncoder.encode(name) + "&pass=" + pass;    //创建异步httpclient    AsyncHttpClient ahc = new AsyncHttpClient();        //发送get请求提交数据    ahc.get(url, new MyResponseHandler());    }  //响应处理器  class MyResponseHandler extends AsyncHttpResponseHandler{    //请求服务器成功时，此方法调用@Overridepublic void onSuccess(int statusCode, Header[] headers,byte[] responseBody) {Toast.makeText(MainActivity.this, new String(responseBody), 0).show();}//请求失败此方法调用@Overridepublic void onFailure(int statusCode, Header[] headers,byte[] responseBody, Throwable error) {Toast.makeText(MainActivity.this, "请求失败", 0).show();}        }    }

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