Android - Enregistrer l'image à partir de l'URL sur la carte SD

DownloadManager fait tout pour vous.

public void downloadFile(String uRl) {
File direct = new File(Environment.getExternalStorageDirectory()
+ "/AnhsirkDasarp");
if (!direct.exists()) {
direct.mkdirs();
}
DownloadManager mgr = (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
Uri downloadUri = Uri.parse(uRl);
DownloadManager.Request request = new DownloadManager.Request(
downloadUri);
request.setAllowedNetworkTypes(
DownloadManager.Request.NETWORK_WIFI
| DownloadManager.Request.NETWORK_MOBILE)
.setAllowedOverRoaming(false).setTitle("Demo")
.setDescription("Something useful. No, really.")
.setDestinationInExternalPublicDir("/AnhsirkDasarpFiles", "fileName.jpg");
mgr.enqueue(request);
//Open Download Manager to view File progress
Toast.makeText(getActivity(), "Downloading...",Toast.LENGTH_LONG).show();
startActivity(Intent(DownloadManager.ACTION_VIEW_DOWNLOADS));
}

OriginalL'auteur AnhSirk Dasarp

J'ai aussi été confronté au même problème et l'a résolu le mien avec cette. Essayez cette

private class ImageDownloadAndSave extends AsyncTask<String, Void, Bitmap>
{
@Override
protected Bitmap doInBackground(String... arg0) 
{           
downloadImagesToSdCard("","");
return null;
}
private void downloadImagesToSdCard(String downloadUrl,String imageName)
{
try
{
URL url = new URL(img_URL); 
/* making a directory in sdcard */
String sdCard=Environment.getExternalStorageDirectory().toString();     
File myDir = new File(sdCard,"test.jpg");
/*  if specified not exist create new */
if(!myDir.exists())
{
myDir.mkdir();
Log.v("", "inside mkdir");
}
/* checks the file and if it already exist delete */
String fname = imageName;
File file = new File (myDir, fname);
if (file.exists ()) 
file.delete (); 
/* Open a connection */
URLConnection ucon = url.openConnection();
InputStream inputStream = null;
HttpURLConnection httpConn = (HttpURLConnection)ucon;
httpConn.setRequestMethod("GET");
httpConn.connect();
if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) 
{
inputStream = httpConn.getInputStream();
}
FileOutputStream fos = new FileOutputStream(file);  
int totalSize = httpConn.getContentLength();
int downloadedSize = 0;   
byte[] buffer = new byte[1024];
int bufferLength = 0;
while ( (bufferLength = inputStream.read(buffer)) >0 ) 
{                 
fos.write(buffer, 0, bufferLength);                  
downloadedSize += bufferLength;                 
Log.i("Progress:","downloadedSize:"+downloadedSize+"totalSize:"+ totalSize) ;
}   
fos.close();
Log.d("test", "Image Saved in sdcard..");                      
}
catch(IOException io)
{                  
io.printStackTrace();
}
catch(Exception e)
{                     
e.printStackTrace();
}
}           
} 

Déclarer vos opérations de réseau dans AsyncTask comme il le charge en tâche de fond. Ne chargez pas le fonctionnement du réseau sur le thread principal.
Après que ce soit dans le bouton cliquez sur ou dans le contenu de l'affichage de cette classe comme

 new ImageDownloadAndSave().execute("");

Et n'oubliez pas d'ajouter la création d'un réseau d'autorisation:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />

Espérant que cela puisse aider quelqu'un 🙂

OriginalL'auteur AndroidOptimist

Essayer ce code..Il fonctionne très bien

public static Bitmap loadImageFromUrl(String url) {
URL m;
InputStream i = null;
BufferedInputStream bis = null;
ByteArrayOutputStream out =null;
try {
m = new URL(url);
i = (InputStream) m.getContent();
bis = new BufferedInputStream(i,1024 * 8);
out = new ByteArrayOutputStream();
int len=0;
byte[] buffer = new byte[1024];
while((len = bis.read(buffer)) != -1){
out.write(buffer, 0, len);
}
out.close();
bis.close();
} catch (MalformedURLException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
byte[] data = out.toByteArray();
Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
//Drawable d = Drawable.createFromStream(i, "src");
return bitmap;
}

et enregistrer l'image bitmap dans le répertoire

ByteArrayOutputStream bytes = new ByteArrayOutputStream();
_bitmap.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
//you can create a new file name "test.jpg" in sdcard folder.
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "test.jpg")
f.createNewFile();
//write the bytes in file
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
//remember close de FileOutput
fo.close();

et ne pas oublier d'ajouter la permission de manifester

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

OriginalL'auteur Ajay