問題描述

我們的項(xiàng)目需要一個(gè) 壓縮圖片后上傳到指定地址并返回url 的功能，Activity需要獲取這個(gè)url做一些處理。我寫的代碼大概是這樣的

/** * url是服務(wù)器地址，img_path是文件本地路徑，Action是自己寫的一個(gè)接口 */ public void UploadImg(final String url, final String img_path, final Action action) {Luban.get(context)//這個(gè)context是Application.load(new File(img_path)).asObservable().timeout(10, TimeUnit.SECONDS).subscribeOn(Schedulers.io()).subscribe(subscriber = new Subscriber<File>() { @Override public void onCompleted() {} @Override public void onError(Throwable e) {action.onError(e, new File(img_path)); } @Override public void onNext(final File file) {//原項(xiàng)目用xutils上傳圖片RequestParams params = new RequestParams();params.addBodyParameter('img', file);HttpUtils http = new HttpUtils(10000);http.configTimeout(10000).configCurrentHttpCacheExpiry(10000).send(HttpRequest.HttpMethod.POST, url, params, new RequestCallBack<String>() { @Override public void onStart() {} @Override public void onLoading(long total, long current, boolean isUploading) {} @Override public void onSuccess(ResponseInfo<String> responseInfo) {Log.i(TAG, 'http onSuccess: ' + Thread.currentThread().getName());action.onSuccess(responseInfo.result, file); } @Override public void onFailure(HttpException error, String msg) {error.printStackTrace();action.onError(error, file); }}); }}); }

activity中是這樣的

BitmapUtils.getInstance().UploadImg(APIService.URL_SEND_PIC, IMG_PATH_FLAG, new BitmapUtils.Action() {@Overridepublic void onStart() { showProgressDialog();}@Overridepublic void onUpdate(int total, int current) {}@Overridepublic void onSuccess(String json, File img) { setImgInfo(json);//需要對(duì)Activity中一些變量進(jìn)行操作}@Overridepublic void onError(Throwable t, File img) { cacheImg(img);//涉及到數(shù)據(jù)庫操作...} });

在這個(gè)回調(diào)里引起了很嚴(yán)重的內(nèi)存泄漏

請(qǐng)問有什么辦法能避免嗎，或者直接改寫也行

問題解答

我用的是這個(gè)壓縮圖片https://github.com/Curzibn/Luban配合rxjava然后上傳，我也用了LeakCanary，沒有內(nèi)存泄漏

/** * 上傳圖片 * * @param context * @param fileUrl * @throws FileNotFoundException */public static void upLoadFile(final Context context, final String fileUrl, Observer<ImageGet> observer) { final ApiService apiservice = Api.createApiService(); Uri uri = Uri.parse(fileUrl); final File file = new File(uri.getPath()); Luban.get(context) .load(file) .putGear(Luban.THIRD_GEAR) .asObservable() .doOnError(new Action1<Throwable>() {@Overridepublic void call(Throwable throwable) { throwable.printStackTrace();} }) .onErrorResumeNext(new Func1<Throwable, Observable<? extends File>>() {@Overridepublic Observable<? extends File> call(Throwable throwable) { return Observable.empty();} }) .flatMap(new Func1<File, Observable<ImageGet>>() {@Overridepublic Observable<ImageGet> call(File file) { RequestBody requestFile = RequestBody.create(MediaType.parse('multipart/form-data'), file); MultipartBody.Part picturePart = MultipartBody.Part.createFormData('Filedata', file.getName(), requestFile); return apiservice.postImage(UserUtil.getUser(context).getToken(), picturePart);} }) .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(observer);}