背景
在實際運用中上傳是一個必不可少的功能，所以我們在封裝二的基礎(chǔ)上加入上傳的功能聚霜，同時需要附帶上傳進度狡恬！
效果
20161024101806604.gif
實現(xiàn)
1.定義service接口
注意：Multipart是指定大文件上傳過程中的標(biāo)示，一般上傳圖片的過程中我們需要附帶信息蝎宇，所以我們需要用到@part指定傳遞的數(shù)值弟劲，MultipartBody.Part是指定傳遞的文件；
/*上傳文件*/
@Multipart
@POST("AppYuFaKu/uploadHeadImg")
Observable<BaseResultEntity<UploadResulte>> uploadImage(@Part("uid") RequestBody uid, @Part("auth_key") RequestBody auth_key,@Part MultipartBody.Part file);
2.加入進度條
retrofit是基于okhttp的處理姥芥，所以我們可以自定義RequestBody兔乞，復(fù)寫writeTo(BufferedSink sink)方法，得到傳遞的進度數(shù)據(jù)
public class ProgressRequestBody extends RequestBody {
//實際的待包裝請求體
private final RequestBody requestBody;
//進度回調(diào)接口
private final UploadProgressListener progressListener;
//包裝完成的BufferedSink
private BufferedSink bufferedSink;
public ProgressRequestBody(RequestBody requestBody, UploadProgressListener progressListener) {
this.requestBody = requestBody;
this.progressListener = progressListener;
}
/**
* 重寫調(diào)用實際的響應(yīng)體的contentType
* @return MediaType
*/
@Override
public MediaType contentType() {
return requestBody.contentType();
}
/**
* 重寫調(diào)用實際的響應(yīng)體的contentLength
* @return contentLength
* @throws IOException 異常
*/
@Override
public long contentLength() throws IOException {
return requestBody.contentLength();
}
/**
* 重寫進行寫入
* @param sink BufferedSink
* @throws IOException 異常
*/
@Override
public void writeTo(BufferedSink sink) throws IOException {
if (null == bufferedSink) {
bufferedSink = Okio.buffer(sink(sink));
}
requestBody.writeTo(bufferedSink);
//必須調(diào)用flush，否則最后一部分?jǐn)?shù)據(jù)可能不會被寫入
bufferedSink.flush();
}
/**
* 寫入庸追，回調(diào)進度接口
* @param sink Sink
* @return Sink
*/
private Sink sink(Sink sink) {
return new ForwardingSink(sink) {
//當(dāng)前寫入字節(jié)數(shù)
long writtenBytesCount = 0L;
//總字節(jié)長度霍骄，避免多次調(diào)用contentLength()方法
long totalBytesCount = 0L;
@Override
public void write(Buffer source, long byteCount) throws IOException {
super.write(source, byteCount);
//增加當(dāng)前寫入的字節(jié)數(shù)
writtenBytesCount += byteCount;
//獲得contentLength的值，后續(xù)不再調(diào)用
if (totalBytesCount == 0) {
totalBytesCount = contentLength();
}
Observable.just(writtenBytesCount).observeOn(AndroidSchedulers.mainThread()).subscribe(new Action1<Long>() {
@Override
public void call(Long aLong) {
progressListener.onProgress(writtenBytesCount, totalBytesCount);
}
});
}
};
}
}
3.自定義接口淡溯，回調(diào)progress進度
public interface UploadProgressListener {
/**
* 上傳進度
* @param currentBytesCount
* @param totalBytesCount
*/
void onProgress(long currentBytesCount, long totalBytesCount);
}
4.創(chuàng)建RequestBody對象读整，加入進度
File file=new File("/storage/emulated/0/Download/11.jpg");
RequestBody requestBody=RequestBody.create(MediaType.parse("image/jpeg"),file);
MultipartBody.Part part= MultipartBody.Part.createFormData("file_name", file.getName(), new ProgressRequestBody(requestBody,
new UploadProgressListener() {
@Override
public void onProgress(long currentBytesCount, long totalBytesCount) {
tvMsg.setText("提示:上傳中");
progressBar.setMax((int) totalBytesCount);
progressBar.setProgress((int) currentBytesCount);
}
}));
5.傳遞附帶信息
和封裝二中post請求的方式一樣，我們需要繼承baseentity咱娶，復(fù)寫里面的方法米间，然后設(shè)置需要傳遞的參數(shù)，因為是測試接口膘侮，所以我的參數(shù)直接寫死在entity里面,part文件動態(tài)指定
/**
* 上傳請求api
* Created by WZG on 2016/10/20.
*/
public class UplaodApi extends BaseEntity {
/*需要上傳的文件*/
private MultipartBody.Part part;
public UplaodApi(HttpOnNextListener listener, RxAppCompatActivity rxAppCompatActivity) {
super(listener, rxAppCompatActivity);
setShowProgress(true);
}
public MultipartBody.Part getPart() {
return part;
}
public void setPart(MultipartBody.Part part) {
this.part = part;
}
@Override
public Observable getObservable(HttpService methods) {
RequestBody uid= RequestBody.create(MediaType.parse("text/plain"), "4811420");
RequestBody key = RequestBody.create(MediaType.parse("text/plain"), "21f8d9bcc50c6ac1ae1020ce12f5f5a7");
return methods.uploadImage(uid,key,getPart());
}
}
6.post請求處理
請求和封裝二中的請求一樣屈糊，通過傳遞一個指定的HttpOnNextListener 對象來回調(diào)來監(jiān)聽結(jié)果信息，一一對應(yīng)
private void uploadeDo(){
File file=new File("/storage/emulated/0/Download/11.jpg");
RequestBody requestBody=RequestBody.create(MediaType.parse("image/jpeg"),file);
MultipartBody.Part part= MultipartBody.Part.createFormData("file_name", file.getName(), new ProgressRequestBody(requestBody,
new UploadProgressListener() {
@Override
public void onProgress(long currentBytesCount, long totalBytesCount) {
tvMsg.setText("提示:上傳中");
progressBar.setMax((int) totalBytesCount);
progressBar.setProgress((int) currentBytesCount);
}
}));
UplaodApi uplaodApi = new UplaodApi(httpOnNextListener,this);
uplaodApi.setPart(part);
HttpManager manager = HttpManager.getInstance();
manager.doHttpDeal(uplaodApi);
}
/**
* 上傳回調(diào)
*/
HttpOnNextListener httpOnNextListener=new HttpOnNextListener<UploadResulte>() {
@Override
public void onNext(UploadResulte o) {
tvMsg.setText("成功");
Glide.with(MainActivity.this).load(o.getHeadImgUrl()).skipMemoryCache(true).into(img);
}
@Override
public void onError(Throwable e) {
super.onError(e);
tvMsg.setText("失斍砹恕："+e.toString());
}
};
