带进度显示的单个和多个 Retrofit+Rxjava2文件上传

首先展示效果如下：

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本demo使用的是rxjava2, rxjava1也是可以使用的；主要核心代码如下：

1.创建个listener

/** * Created by JokAr on 2017/3/6. */public interface UploadListener {    void onRequestProgress(long bytesWritten, long contentLength);}

2.获取上传进度

/** * Created by JokAr on 2017/3/6. */public class CountingRequestBody extends RequestBody {    private RequestBody mRequestBody;    private UploadListener mUploadListener;    private CountingSink mCountingSink;    public CountingRequestBody(RequestBody requestBody, UploadListener uploadListener) {        mRequestBody = requestBody;        mUploadListener = uploadListener;    }    @Override    public MediaType contentType() {        return mRequestBody.contentType();    }    @Override    public long contentLength() throws IOException {        try {            return mRequestBody.contentLength();        } catch (IOException e) {            e.printStackTrace();            return -1;        }    }    @Override    public void writeTo(BufferedSink sink) throws IOException {        BufferedSink bufferedSink;        mCountingSink = new CountingSink(sink);        bufferedSink = Okio.buffer(mCountingSink);        mRequestBody.writeTo(bufferedSink);        bufferedSink.flush();    }    class CountingSink extends ForwardingSink {        private long bytesWritten = 0;        public CountingSink(Sink delegate) {            super(delegate);        }        @Override        public void write(Buffer source, long byteCount) throws IOException {            super.write(source, byteCount);            bytesWritten += byteCount;            mUploadListener.onRequestProgress(bytesWritten, contentLength());        }    }}

3.添加拦截器

/** * Created by JokAr on 2017/3/6. */public class UpLoadProgressInterceptor implements Interceptor {    private UploadListener mUploadListener;    public UpLoadProgressInterceptor(UploadListener uploadListener) {        mUploadListener = uploadListener;    }    @Override    public Response intercept(Chain chain) throws IOException {        Request request = chain.request();        if(null == request.body()){            return chain.proceed(request);        }        Request build = request.newBuilder()                .method(request.method(),                        new CountingRequestBody(request.body(),                        mUploadListener))                .build();        return chain.proceed(build);    }}

4.使用方法

 public static Retrofit getRetrofit(UploadListener listener) {        UpLoadProgressInterceptor interceptor = new UpLoadProgressInterceptor(listener);        OkHttpClient client = new OkHttpClient.Builder()                .addInterceptor(interceptor)                .retryOnConnectionFailure(true)                .connectTimeout(DEFAULT_TIMEOUT, TimeUnit.SECONDS)                .build();        return new Retrofit.Builder()                .baseUrl(BASE_URL + "/")                .client(client)                .addConverterFactory(GsonConverterFactory.create())                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())                .build();    }

• 单个文件上传：

 @Override    public void uploadFile(File file,                           UploadListener listener,                           @NonNull LifecycleTransformer transformer,                           @NonNull final UploadFileCallBack callBack) {        if (file != null && file.exists()) {            RequestBody requestFile =                    RequestBody.create(MediaType.parse("application/otcet-stream"), file);            MultipartBody.Part body =                    MultipartBody.Part.createFormData("file", file.getName(), requestFile);            UploadNetWorkConfig.getRetrofit(listener)                    .create(UploadFileService.class)                    .uploadHead(body)                    .compose(transformer)                    .subscribeOn(Schedulers.io())                    .unsubscribeOn(Schedulers.io())                    .observeOn(Schedulers.newThread())                    .map(new HttpResultFunc())                    .observeOn(AndroidSchedulers.mainThread())                    .subscribe(new ResourceObserver<UploadEntities>() {                        @Override                        protected void onStart() {                            super.onStart();                            callBack.onStart();                        }                        @Override                        public void onNext(UploadEntities data) {                            callBack.result(data);                        }                        @Override                        public void onError(Throwable e) {                            callBack.requestError(e);                        }                        @Override                        public void onComplete() {                            callBack.complete();                        }                    });        }    }

• 多个文件上传：

    /**     * 上传多个文件     *     * @param pathList     * @param listener     * @param transformer     * @param callBack     */    @Override    public void uploadMultiFile(String[] pathList,                                UploadListener listener,                                @NonNull LifecycleTransformer transformer,                                @NonNull final UploadMultiFileCallBack callBack) {        if (pathList != null && pathList.length > 0) {            ArrayList<Observable> observables = new ArrayList<>();            for (String path : pathList) {                File file = new File(path);                if (file.exists()) {                    RequestBody requestFile =                            RequestBody.create(MediaType.parse("application/otcet-stream"), file);                    MultipartBody.Part body =                            MultipartBody.Part.createFormData("file", file.getName(), requestFile);                    Observable<String> observable = UploadNetWorkConfig.getRetrofit(listener)                            .create(UploadFileService.class)                            .uploadHead(body)                            .compose(transformer)                            .subscribeOn(Schedulers.io())                            .unsubscribeOn(Schedulers.io())                            .observeOn(Schedulers.newThread())                            .map(new HttpResultFunc());                    observables.add(observable);                }                file = null;            }            Observable[] observables1 = new Observable[observables.size()];            observables1 = (Observable[]) observables.toArray();            observables = null;            Observable.zipArray(new Function<Object[], ArrayList<UploadEntities>>() {                /**                 * Apply some calculation to the input value and return some other value.                 *                 * @param objects the input value                 * @return the output value                 * @throws Exception on error                 */                @Override                public ArrayList<UploadEntities> apply(@NonNull Object[] objects) throws Exception {                    ArrayList<UploadEntities> arrayList = new ArrayList<>();                    for (Object object : objects) {                        arrayList.add((UploadEntities) object);                    }                    return arrayList;                }            }, true, 1, observables1)                    .observeOn(AndroidSchedulers.mainThread())                    .subscribe(new ResourceObserver<ArrayList<UploadEntities>>() {                        @Override                        protected void onStart() {                            super.onStart();                            callBack.onStart();                        }                        @Override                        public void onNext(ArrayList<UploadEntities> data) {                            callBack.result(data);                        }                        @Override                        public void onError(Throwable e) {                            callBack.requestError(e);                        }                        @Override                        public void onComplete() {                            callBack.complete();                        }                    });        }    }

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主要代码就是这些了；完整demo请看这里：
https://github.com/a1018875550/RxUpload
如果你觉得对你有用，欢迎start