Xutils3——网络连接

1在build.gradle中引包

    compile'org.xutils:xutils:3.3.36'

2创建MyApplication初始化xutils

 public class MyApplication extends Application {    @Override    public void onCreate() {    super.onCreate();    x.Ext.init(this);    x.Ext.setDebug(BuildConfig.DEBUG);// 是否输出debug日志, 开启debug会影响性能.    }

3在AndroiManifast.xml中声明权限并引入MyApplication

 <uses-permission android:name="android.permission.INTERNET"/>    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <application    android:name=".base.MyApplication"

4 xml页面

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.xxx.xxxActivity"    android:orientation="vertical"    android:weightSum="1"><Button    android:id="@+id/get"    android:text="GET"    android:layout_width="match_parent"    android:layout_height="wrap_content"    />    <Button        android:id="@+id/post"        android:text="POST"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <Button        android:id="@+id/other"        android:text="OTHER"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <Button        android:id="@+id/upload"        android:text="UPLOAD"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <Button        android:id="@+id/download"        android:text="DOWNLOAD"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <Button        android:id="@+id/cache"        android:text="CACHE"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textAppearance="?android:attr/textAppearanceMedium"        android:text="Medium Text"        android:id="@+id/httptextView" />    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/httpimageView"        android:layout_gravity="center_horizontal"        android:layout_weight="1.10" /></LinearLayout>

5Activity生成http连接方法

import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.sjs.vendingmachine.R;

import org.xutils.common.Callback;
import org.xutils.common.util.DensityUtil;
import org.xutils.http.HttpMethod;
import org.xutils.http.RequestParams;
import org.xutils.image.ImageOptions;
import org.xutils.view.annotation.ContentView;
import org.xutils.view.annotation.Event;
import org.xutils.view.annotation.ViewInject;
import org.xutils.x;

import java.io.File;

/**
* Created by SJS on 2017/1/17.
*/

@ContentView(R.layout.activity_http)
class httptest extends AppCompatActivity {
// private Context context;
@ViewInject(R.id.get)
private Button GET;

@ViewInject(R.id.post)private Button POST;@ViewInject(R.id.other)private Button OTHER;@ViewInject(R.id.download)private Button DOWNLOAD;@ViewInject(R.id.cache)private Button CACHE;@ViewInject(R.id.httptextView)private TextView TX;@ViewInject(R.id.httpimageView)private ImageView imageView;ImageOptions imageOptions;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    //注入view和事件    x.view().inject(this);    //        context=this;    imageOptions = new ImageOptions.Builder()            .setSize(DensityUtil.dip2px(120), DensityUtil.dip2px(120))            .setRadius(DensityUtil.dip2px(5))            // 如果ImageView的大小不是定义为wrap_content, 不要crop.            .setCrop(true)            // 加载中或错误图片的ScaleType            //.setPlaceholderScaleType(ImageView.ScaleType.MATRIX)            .setImageScaleType(ImageView.ScaleType.CENTER_CROP)            //设置加载过程中的图片            .setLoadingDrawableId(R.mipmap.ic_launcher)            //设置加载失败后的图片            .setFailureDrawableId(R.mipmap.ic_launcher)            //设置使用缓存            .setUseMemCache(true)            //设置支持gif            .setIgnoreGif(false)            //设置显示圆形图片            //      .setCircular(false)            .build();}String url = "http://www.baidu.com/";@Event(R.id.get)private void get(View v) {    final ProgressDialog progressDialog = new ProgressDialog(this);    progressDialog.setMessage("正在下载");    RequestParams params = new RequestParams(url);    params.addQueryStringParameter("username", "11000");    params.addQueryStringParameter("password", "888888");    Callback.Cancelable cancelable = x.http().get(params, new Callback.CommonCallback() {        @Override        public void onSuccess(Object result) {            Log.i("get_onSuccess", "result" + result);        }        @Override        public void onError(Throwable ex, boolean isOnCallback) {        }        @Override        public void onCancelled(CancelledException cex) {        }        @Override        public void onFinished() {            //请求不管成功还是失败都会调用            progressDialog.cancel();        }    });    cancelable.cancel();}@Event(value = {R.id.httpimageView})private void loadImage(View view) {    x.image().bind(imageView, "http://img2.3lian.com/2014/f2/164/d/17.jpg", imageOptions);}@Event(R.id.post)private void post(View view) {    RequestParams params = new RequestParams(url);    params.addBodyParameter("username", "12323");    //根据当前请求方式添加参数位置    params.addParameter("password", "2313");    //        params.addHeader("head","xs");    x.http().post(params, new Callback.CacheCallback<String>() {        @Override        public void onSuccess(String result) {            Log.i("get_onSuccess", "result" + result);            TX.setText(result);        }        @Override        public void onError(Throwable ex, boolean isOnCallback) {        }        @Override        public void onCancelled(CancelledException cex) {        }        @Override        public void onFinished() {        }        @Override        public boolean onCache(String result) {            return false;        }    });}@Event(R.id.other)private void other(View view) {    RequestParams params = new RequestParams(url);    params.addBodyParameter("usrname", "34234");    x.http().request(HttpMethod.PUT, params, new Callback.CacheCallback<String>() {        @Override        public boolean onCache(String result) {            return false;        }        @Override        public void onSuccess(String result) {        }        @Override        public void onError(Throwable ex, boolean isOnCallback) {        }        @Override        public void onCancelled(CancelledException cex) {        }        @Override        public void onFinished() {        }    });}@Event(R.id.upload)private void upload(View view) {    String path = "//";    RequestParams params = new RequestParams(url);    params.addBodyParameter("file", new File(path));    x.http().post(params, new Callback.CacheCallback<String>() {        @Override        public boolean onCache(String result) {            return false;        }        @Override        public void onSuccess(String result) {        }        @Override        public void onError(Throwable ex, boolean isOnCallback) {        }        @Override        public void onCancelled(CancelledException cex) {        }        @Override        public void onFinished() {        }    });}@Event(R.id.download)private void download(View view) {    url = "";    RequestParams params = new RequestParams(url);    Callback.Cancelable post =            x.http().post(params, new Callback.ProgressCallback<File>() {                @Override                public void onSuccess(File result) {                }                @Override                public void onError(Throwable ex, boolean isOnCallback) {                }                @Override                public void onCancelled(CancelledException cex) {                }                @Override                public void onFinished() {                }                @Override                public void onWaiting() {                }                @Override                public void onStarted() {                }                @Override                public void onLoading(long total, long current, boolean isDownloading) {                    //文件下载时回调的方法                    Log.i("xxxxxxxxxxxxx", "current<<" + current + "total<<" + total);                }            });}@Event(R.id.cache)private void cache(View view) {    RequestParams params = new RequestParams(url);    params.setCacheMaxAge(1000 * 60);    Callback.Cancelable cancelable =            x.http().get(params, new Callback.CacheCallback<String>() {                @Override                public boolean onCache(String result) {                    //false 不相信本地缓存                    //相信本地缓存                    Log.i("sdadasd", "cache<<" + result);                    return false;                }                @Override                public void onSuccess(String result) {                    Log.i("get_onSuccess", "result" + result);                }                @Override                public void onError(Throwable ex, boolean isOnCallback) {                }                @Override                public void onCancelled(CancelledException cex) {                }                @Override                public void onFinished() {                    //请求不管成功还是失败都会调用                }            });    cancelable.cancel();}}