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依赖

implementation 'com.jimi_wu:EasyRxRetrofit:2.0.0'

在你的application中注册

@Override
public void onCreate() {
    super.onCreate();
//  在此处初始化Retrofit
    RetrofitManager.init(new YourRetrofitBuilder());
}

创建你的返回数据基类

EasyRxRetrofit封装了对返回数据的统一处理，你需要创建你自己的返回数据基类，并实现BaseModel接口的三个方法：

  • isError(): 返回请求是否出错；
  • getMsg()：返回错误信息；
  • getResult()：返回请求成功的数据。

比如，如果你的返回格式为

{
    code: 200,
    errMsg: "success",
    data: {...}
}

那么，你的返回数据基类应该为

public class ResultBean<T> implements BaseModel<T> {

    private int code;
    private String errMsg;
    private T data;

    @Override
    public boolean isError() {return code != 200;}
    
    @Override
    public String getMsg() {return errMsg;}

    @Override
    public T getResult() {return data;}

    /** getter and setter*/
    ...
}

提醒：基类记得使用泛型

调用get/post请求

要调用get/post请求，你首先需要创建自己的ApiService，跟你使用retrofit时一样，只是返回类型必须为Observable<ResultBean<T>>，其中ResultBean是你创建的返回数据基类:

public interface GetUserService {

    @POST("/getUser")
    Observable<ResultBean<UserBean>> start();

}

然后，执行你的请求，调用.compose(RetrofitManager.<T>handleResult())来实现返回数据的处理，并使用BaseObserver来订阅结果，如：

RetrofitManager
        .createService(GetUserService.class)
        .start()
        .compose(RetrofitManager.<UserBean>handleResult())
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new BaseObserver<UserBean>(this) {

            @Override
            protected void _onNext(UserBean userBean) {
                Log.i("retrofit", "onNext=========>" + userBean.getName());
                tv.setText("请求成功:" + userBean.getName());
            }

            @Override
            protected void _onError(Throwable e) {
                Log.i("retrofit", "onError=========>" + e.getMessage());
                tv.setText("请求失败:" + e.getMessage());
            }
        });

上传单个/多个文件，监听上传进度

上传文件不需自己创建ApiService，只需新建UploadParam对象，然后调用RetrofitManager.uploadFile方法，传入接口地址和UploadParam对象即可。

uploadFile方法有两个定义:

uploadFile(String url, UploadParam... params);
uploadFile(String url, List<UploadParam> params);

因此，上传单个文件与上传多个文件的方法是相同的：

// 上传单个文件
RetrofitManager.uploadFile(Constants.UPLOAD_URL, new UploadParam("upload", file))
// 上传多个文件
RetrofitManager.uploadFile(Constants.UPLOAD_URL, 
                           new UploadParam("upload", file1), 
                           new UploadParam("upload", file2));
// 使用List上传多个文件
ArrayList<UploadParam> uploadParams = new ArrayList<>(files.size());
for (File file : files) {
    uploadParams.add(new UploadParam("upload", file));
}
RetrofitManager.uploadFile(Constants.UPLOADS_URL, uploadParams);

需要注意的是，上传文件需要使用UploadObserver来订阅：

ArrayList<UploadParam> uploadParams = new ArrayList<>(files.size());
for (File file : files) {
    uploadParams.add(new UploadParam("upload", file));
}
RetrofitManager
        .uploadFile(Constants.UPLOADS_URL, uploadParams)
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new UploadObserver<ResultBean<ArrayList<FileBean>>>() {

            @Override
            public void _onNext(ResultBean<ArrayList<FileBean>> arrayListResultBean) {
                ArrayList<FileBean> fileBeans = arrayListResultBean.getData();
                StringBuilder stringBuilder = new StringBuilder();
                for (FileBean fileBean : fileBeans) {
                    stringBuilder.append("上传成功:" + fileBean.getUrl() + "\n");
                }
                Log.d("retrofit", "onNext=======>" + stringBuilder);
                tv.setText("上传成功:" + stringBuilder);
            }

            @Override
            public void _onProgress(Integer percent) {
                Log.i("retrofit", "onProgress=======>" + percent);
                tv.setText("上传中:" + percent);
            }
            
            @Override
            public void _onProgress(long uploaded, long sumLength) {
                tvActualProgress.setText("下载中:" + uploaded + "/" + sumLength);
            }

            @Override
            public void _onError(Throwable e) {
                Log.d("retrofit", "onError======>" + e.getMessage());
                tv.setText("上传失败:" + e.getMessage());
            }
        });

其中_onProgress(Integer percent)方法回调百分比进度，_onProgress(long uploaded, long sumLength)方法回调文件长度进度，这两个方法并非抽象方法，因此可按需选择监听或不监听。

结果如下：

06-20 10:52:49.095 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>95
06-20 10:52:49.095 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>96
06-20 10:52:49.116 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>97
06-20 10:52:49.117 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>98
06-20 10:52:49.118 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>99
06-20 10:52:49.118 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>100
06-20 10:52:49.160 32377-32377/com.jimi_wu.sample I/retrofit: onNext=======>上传成功:http://192.168.5.127:3000/uploads/wx_camera_1497846596539.jpg
                                                              上传成功:http://192.168.5.127:3000/uploads/wx_camera_1497774775994.jpg
                                                              上传成功:http://192.168.5.127:3000/uploads/wx_camera_1497774700027.jpg

文件下载，监听下载进度

与上传文件类似，下载文件只需调用RetrofitManager.download("")方法，并使用DownLoadObserver订阅即可：

RetrofitManager
        .download("/uploads/test.pdf")
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new DownLoadObserver() {
            @Override
            public void _onNext(String result) {
                Log.i("retrofit", "onNext=======>" + result);
                tv.setText("下载成功:" + result);
            }

            @Override
            public void _onProgress(Integer percent) {
                Log.i("retrofit", "onProgress=======>" + percent);
                tv.setText("下载中:" + percent);
            }

            @Override
            public void _onProgress(long uploaded, long sumLength) {
                tvActualProgress.setText("下载中:" + uploaded + "/" + sumLength);
            }

            @Override
            public void _onError(Throwable e) {
                Log.i("retrofit", "onProgress=======>" + e.getMessage());
                tv.setText("下载失败:" + e.getMessage());
            }
        });

当然，你也可以使用 download(String url, String savePath, String fileName) 来设置下载的保存路径和文件名。

EasyRxRetrofit 内部在下载文件时，会使用.tmp后缀作为临时文件名，待下载完成后再重命名为真正的名字。与上传一样，DownLoadObserver内部也含有两个_onProgress回调，可按需监听或不监听。

结果如下:

06-20 10:54:01.590 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>95
06-20 10:54:01.686 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>96
06-20 10:54:01.793 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>97
06-20 10:54:01.884 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>98
06-20 10:54:01.985 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>99
06-20 10:54:02.086 32377-32377/com.jimi_wu.sample I/retrofit: onProgress=======>100
06-20 10:54:02.100 32377-32377/com.jimi_wu.sample I/retrofit: onNext=======>/storage/emulated/0/Download/VID_20170616_122618.mp4

说明

  • 可通过实现RetrofitBuilder接口返回Retrofit实例，管理各项配置。
  • EasyRxRetrofit内部不会进行线程切换，需手动按需切换。
  • EasyRxRetrofit内部未包含生命周期类的管理，需手动管理。

博客地址：http://blog.csdn.net/anyfive/article/details/73469365