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上加入上傳的功能，同時需要附帶上傳進度！
效果
實現
1.定義service介面
注意：Multipart是指定大檔案上傳過程中的標示，一般上傳圖片的過程中我們需要附帶資訊，所以我們需要用到@part指定傳遞的數值，MultipartBody.Part是指定傳遞的檔案；
/*上傳檔案*/
@Multipart
@POST("AppYuFaKu/uploadHeadImg")
Observable<BaseResultEntity<UploadResulte>> uploadImage(@Part("uid") RequestBody uid, @Part("auth_key") RequestBody auth_key, @Part MultipartBody.Part file);複製程式碼2.加入進度條
retrofit是基於okhttp的處理，所以我們可以自定義RequestBody，複寫writeTo(BufferedSink sink)方法，得到傳遞的進度資料
public class ProgressRequestBody extends RequestBody {
//實際的待包裝請求體
private final RequestBody requestBody;
//進度回撥介面
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;
}
/**
* 重寫呼叫實際的響應體的contentType
* @return MediaType
*/
@Override
public MediaType contentType() {
return requestBody.contentType();
}
/**
* 重寫呼叫實際的響應體的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);
//必須呼叫flush，否則最後一部分資料可能不會被寫入
bufferedSink.flush();
}
/**
* 寫入，回撥進度介面
* @param sink Sink
* @return Sink
*/
private Sink sink(Sink sink) {
return new ForwardingSink(sink) {
//當前寫入位元組數
long writtenBytesCount = 0L;
//總位元組長度，避免多次呼叫contentLength()方法
long totalBytesCount = 0L;
@Override
public void write(Buffer source, long byteCount) throws IOException {
super.write(source, byteCount);
//增加當前寫入的位元組數
writtenBytesCount += byteCount;
//獲得contentLength的值，後續不再呼叫
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);
}
});
}
};
}
}複製程式碼3.自定義介面，回撥progress進度
public interface UploadProgressListener {
/**
* 上傳進度
* @param currentBytesCount
* @param totalBytesCount
*/
void onProgress(long currentBytesCount, long totalBytesCount);
}複製程式碼4.建立RequestBody物件，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);
}
}));複製程式碼5.傳遞附帶資訊
和封裝二中post請求的方式一樣，我們需要繼承baseentity，複寫裡面的方法，然後設定需要傳遞的引數，因為是測試介面，所以我的引數直接寫死在entity裡面,part檔案動態指定
/**
* 上傳請求api
* Created by WZG on 2016/10/20.
*/
public class UplaodApi extends BaseEntity {
/*需要上傳的檔案*/
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());
}
}複製程式碼6.post請求處理
請求和封裝二中的請求一樣，通過傳遞一個指定的HttpOnNextListener 物件來回撥來監聽結果資訊，一一對應
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);
}
/**
* 上傳回撥
*/
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("失敗："+e.toString());
}
};複製程式碼結構
