详解Android的Splash启动图的两种动态切换方式

Observable.just(RetrofitHelper.API_BASE_URL + img)               .subscribeOn(Schedulers.newThread())                  .subscribe(new Action1<String>() {                     @Override                               public void call(String s) {                        try {                                   Glide.with(getApplicationContext())                      .load(s)                                .downloadOnly(720, 1280)                        .get();                          } catch (InterruptedException | ExecutionException e) {          e.printStackTrace();                        }                                 }                                 });

 File file = new File(sp_splash_logo); if (file.exists()) {   Glide.with(getApplicationContext()).load(file).into(mIvSplash); } else {   mIvSplash.setImageResource(R.mipmap.splash); }

  Retrofit retrofit = new Retrofit.Builder()      .baseUrl(RetrofitHelper.API_BASE_URL)      .addCallAdapterFactory(RxJavaCallAdapterFactory.create())      .build();  ImgServise imgServise = retrofit.create(ImgServise.class);  imgServise.downloadPicFromNet(img)      .subscribeOn(Schedulers.newThread())      .subscribe(new Action1<ResponseBody>() {        @Override        public void call(ResponseBody responseBody) {          try {            long contentLength = responseBody.contentLength();            InputStream is = responseBody.byteStream();            File file = new File(Environment.getExternalStorageDirectory(), BuildConfig.APPLICATION_ID + "splash.png");            FileOutputStream fos = new FileOutputStream(file);            BufferedInputStream bis = new BufferedInputStream(is);            byte[] buffer = new byte[1024];            int len;            long sum = 0L;            while ((len = bis.read(buffer)) != -1) {              fos.write(buffer, 0, len);              sum += len;              fos.flush();              //增加下载进度的获取              Log.d("TAG---", sum + "/" + contentLength);            }           fos.close();           bis.close();           is.close();          } catch (IOException e) {            e.printStackTrace();          } finally {            stopSelf();          }        }      }, new Action1<Throwable>() {        @Override        public void call(Throwable throwable) {          stopSelf();        }      });