android-async-http第三方包的使用

今后android网络操作就用这个jar包了，哈哈。。。

需要android-async-http-1.4.8和httpcore-4.2.4的jar包。
这个包能解决网络操作的大部分问题，包括：
1，GET请求
2，POST请求
3，文件上传
4，下载文件
5，请求JSON数据等

布局就不写了。

先写一个Helper类

package com.jackie.android.async.http.util;import android.os.Build;import com.loopj.android.http.AsyncHttpClient;/** * 使用android-async-http-1.4.9包封装的异步HTTP请求工具类 * Created by Administrator on 2016/11/30. */public class AsyncHttpHelper {    private static final AsyncHttpClient client;    /**     * android 客户端信息     */    private static String appUserAgent;    static {        client = new AsyncHttpClient();        client.setMaxRetriesAndTimeout(3, 10000);        client.setUserAgent(getUserAgent());    }    private static String getUserAgent() {        if (appUserAgent == null || appUserAgent == "") {            StringBuilder sb = new StringBuilder("jackie");            sb.append("|Android");            sb.append("|" + Build.VERSION.RELEASE);//手机系统版本            sb.append("|" + Build.MODEL);//手机型号            appUserAgent = sb.toString();        }        return appUserAgent;    }    private AsyncHttpHelper() {    }    public static AsyncHttpClient getClient() {        return client;    }}

主界面如下：

package com.jackie.android.async.http.activity;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;import com.jackie.android.async.http.R;import com.jackie.android.async.http.util.AsyncHttpHelper;import com.loopj.android.http.RequestParams;import com.loopj.android.http.TextHttpResponseHandler;import org.apache.http.Header;/** * Created by Administrator on 2016/11/30. */public class MainActivity extends Activity {    private Button button_register;    private EditText editText_lname;    private EditText editText_phone_number;    private EditText editText_password;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button_register = (Button) findViewById(R.id.btn_register);        editText_lname = (EditText) findViewById(R.id.name);        editText_phone_number = (EditText) findViewById(R.id.phone);        editText_password = (EditText) findViewById(R.id.password);        button_register.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                String lname = editText_lname.getText().toString();                String phone_number = editText_phone_number.getText().toString();                String password = editText_password.getText().toString();                String url = "http://192.168.1.100:8080/waimai/register";                RequestParams params = new RequestParams();                params.put("lname", lname);                params.put("phone_number", phone_number);                params.put("password", password);                AsyncHttpHelper.getClient().post(url, params, new TextHttpResponseHandler() {                    @Override                    public void onFailure(int i, Header[] headers, String s, Throwable throwable) {                        Toast.makeText(MainActivity.this, throwable.getMessage(), Toast.LENGTH_SHORT).show();                    }                    @Override                    public void onSuccess(int i, Header[] headers, String s) {                        Toast.makeText(MainActivity.this, s, Toast.LENGTH_SHORT).show();                    }                });            }        });    }}

不要忘了加权限：

<uses-permission android:name="android.permission.INTERNET"/>