使用Retrofit和RxJava

使用Retrofit和RxJava整合访问网络,然后将数据显示到界面上

def retrofitVersion = '2.0.0-beta1'

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:22.2.1'
    compile 'com.android.support:design:22.2.1'

    //Retrofit
    compile "com.squareup.retrofit:retrofit:$retrofitVersion"
    compile "com.squareup.retrofit:converter-gson:$retrofitVersion"

    //RxJava
    compile 'io.reactivex:rxjava:1.0.14'
    compile 'io.reactivex:rxandroid:1.0.1'
}

在app.buidle里面添加ReTrofit和RxJava的依赖,在

dependencies上面一定要注明Retrofit的版本号
def retrofitVersion = '2.0.0-beta1'

MainActivity里面的代码:
public class MainActivity extends Activity implements View.OnClickListener {
    /**
     * 自定义的观察者
     */
    public MyObserver observer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button btn = (Button) findViewById(R.id.btn);
        btn.setOnClickListener(this);

        observer = new MyObserver();//创建一个观察者

    }
    //点击按钮就请求网络
    @Override
    public void onClick(View view) {
        if (view.getId() == R.id.btn) {//点击获取好友动态
            Control control = new Control(this);
            control.getFriendsShareFromServer();//访问网络并且解析Json

        }
    }

    /**
     * 自定义的观察者
     */
    class MyObserver implements rx.Observer<Resquest_friends_info> {

        @Override
        public void onCompleted() {
            Log.d("msg", "观察的事件结束了---");
        }

        @Override
        public void onError(Throwable e) {
            Log.d("msg", "观察的事件出错了");
        }
    //订阅观察者后,被观察者会把数据传回来
        @Override
        public void onNext(Resquest_friends_info resquest_friends_info) {
            Log.d("msg", "观察者OnNext");
            ArrayList<Resquest_friends_info.EveryShareInfo> results = resquest_friends_info.getResult();
            Toast.makeText(MainActivity.this,"观察者收到了数据",Toast.LENGTH_SHORT).show();

            for (Resquest_friends_info.EveryShareInfo info : results) {//每条分享的信息
                Log.d("msg", "分享信息++++" + info.getPub_context() + "--->" + info.getPub_datetime() + "----->" + info.getPub_frd_name());
                Log.d("msg", "-----------------------------------------------------");

                for (Resquest_friends_info.EveryShareInfo.Reply reply : info.pub_com) {//每条回复
                    Log.d("msg", "评论+++++" + reply.getPc_name() + "--->" + reply.getPc_txt() + "--->");
                    Log.d("msg", "----------------------------------------------------------------");
                }
                for (Resquest_friends_info.EveryShareInfo.Thumb thumb : info.pub_thumup) {//每个点赞
                    Log.d("msg", "点赞++++" + thumb.getPt_name());
                    Log.d("msg", "---------------------------------------");
                }
            }
        }
    }
}
Resquest_friends_info表示一个JavaBean对象,
app结构如下:

//访问网络的接口
public interface GitHubService {
//    ================================================  =   =   ==  ==========
//
  //表示Get请求,里面是地址这是写死的地址,但是地址中的参数要动态改变,就不能这样写   // @GET("/index.php?m=home&c=message&a=resquest_friends_info&uid=1234567&p=1")
  
  
//参数要动态传进去,所以要这样写
//@GET(value = "/index.php"), 或者@GET("/index.php")也可以
@GET("/index.php")
//用这个方法去访问网络
Call<Resquest_friends_info> getFriendsShareInfo(@Query("m") String m,@Query("c") String c,@Query("a") String a,@Query("uid") String uid,@Query("p") String p); 
}





这里的路径可以自己修改,比如,写成这样也是可以的:
//@GET("/index.php?m=home")
//Call<Resquest_friends_info> getFriendsShareInfo(@Query("c") String c,@Query("a") String a,@Query("uid") String uid,@Query("p") String p);
 
/**此类是访问网络的Control
 * Created by xhj on 15-12-18.
 */
public class Control {
    public static final String TAG="msg";
  //URL根路径,一般就是域名
public static final String APITrack="http://192.168.1.102"; private MainActivity activity; /**构造方法时把观察者所在的类传进来*/ public Control(MainActivity activity){ this.activity=activity; } /**从服务器获取好友动态*/ public void getFriendsShareFromServer(){ Retrofit retrofit = new Retrofit.Builder() .baseUrl(APITrack) .addConverterFactory(GsonConverterFactory.create())//用Gson去解析数据 .build(); GitHubService git = retrofit.create(GitHubService.class); Call<Resquest_friends_info> call = git.getFriendsShareInfo(); call.enqueue(new Callback<Resquest_friends_info>() {
        //访问网络回来,并且成功拿到数据就调用这个方法 @Override
public void onResponse(Response<Resquest_friends_info> response) { final Resquest_friends_info resquest_friends_info = response.body(); Observable<Resquest_friends_info> observable = Observable.create(new Observable.OnSubscribe<Resquest_friends_info>() { @Override public void call(Subscriber<? super Resquest_friends_info> subscriber) { subscriber.onNext(resquest_friends_info); subscriber.onCompleted();//事件结束 } }); observable.subscribe(activity.observer);//订阅观察者 } @Override public void onFailure(Throwable t) { Log.d("msg","失败了"); } }); } }


原文地址:https://www.cnblogs.com/android-yus/p/5062724.html