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Example of how to download a video using Okhttp and show a progress bar to the user
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class VideoDownloader extends AsyncTask<Void, Long, Boolean> { | |
@Override | |
protected void onPreExecute() { | |
super.onPreExecute(); | |
} | |
@Override | |
protected Boolean doInBackground(Void... params) { | |
OkHttpClient client = new OkHttpClient(); | |
String url = "http://myamazingvideo.mp4"; | |
Call call = client.newCall(new Request.Builder().url(url).get().build()); | |
try { | |
Response response = call.execute(); | |
if (response.code() == 200 || response.code() == 201) { | |
Headers responseHeaders = response.headers(); | |
for (int i = 0; i < responseHeaders.size(); i++) { | |
Log.d(LOG_TAG, responseHeaders.name(i) + ": " + responseHeaders.value(i)); | |
} | |
InputStream inputStream = null; | |
try { | |
inputStream = response.body().byteStream(); | |
byte[] buff = new byte[1024 * 4]; | |
long downloaded = 0; | |
long target = response.body().contentLength(); | |
mediaFile = new File(getActivity().getCacheDir(), "mySuperVideo.mp4"); | |
OutputStream output = new FileOutputStream(mediaFile); | |
publishProgress(0L, target); | |
while (true) { | |
int readed = inputStream.read(buff); | |
if (readed == -1) { | |
break; | |
} | |
output.write(buff, 0, readed); | |
//write buff | |
downloaded += readed; | |
publishProgress(downloaded, target); | |
if (isCancelled()) { | |
return false; | |
} | |
} | |
output.flush(); | |
output.close(); | |
return downloaded == target; | |
} catch (IOException ignore) { | |
return false; | |
} finally { | |
if (inputStream != null) { | |
inputStream.close(); | |
} | |
} | |
} else { | |
return false; | |
} | |
} catch (IOException e) { | |
e.printStackTrace(); | |
return false; | |
} | |
} | |
@Override | |
protected void onProgressUpdate(Long... values) { | |
super.onProgressUpdate(values); | |
progressBar.setMax(values[1].intValue()); | |
progressBar.setProgress(values[0].intValue()); | |
} | |
@Override | |
protected void onPostExecute(Boolean aBoolean) { | |
super.onPostExecute(aBoolean); | |
progressBar.setVisibility(View.GONE); | |
if (mediaFile != null && mediaFile.exists()) { | |
playVideo(); | |
} | |
} | |
} |
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