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How to download and save Bitmap of animated webp?

When I am using webp files for animated sticker packs it get rejected but if use same files for static stickers it get excepted. After looking all the codes I came to know that this is the last point where those files becomes problematic. But don not know how to identify if webp files stays as animated webp after saving. Please share your thought.
ps: I am using these webp files for whatsapp sticker packs. there is flag "animated_sticker_pack". we have to tell whatsapp that this pack contains only animated webp with proper fomrat. If I set it false then sticker pack get added (let it be static or animated webp). But if I set that flag true then those animated webp get rejected for pack showing error that There's problem with this pack.... So it might be that frames are lesser then it required. It get accepted as static means it might have single frame only.
To avoid issues regarding file type,format,size and all I am using the sample files from WhatsApp sample app
Code:
public static void SaveImage(Bitmap finalBitmap, String name, String identifier) {
String root = path + "/" + identifier;
File myDir = new File(root);
myDir.mkdirs();
String fname = name;
File file = new File(myDir, fname);
if (file.exists()){
file.delete();
}
try {
// FileOutputStream
FileOutputStream out = new FileOutputStream(file);
// Bitmap.compress
finalBitmap.compress(Bitmap.CompressFormat.WEBP, 100, out);
// close
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
////////////////////Other methods before saving images
private Bitmap downloadImageBitmap(String sUrl, String sIdentifier, String sName) {
imageFileName = getLastBitFromUrl(sUrl).replace(".png", ".webp");
identifier = sIdentifier;
name = sName;
Bitmap bitmap = null;
try {
InputStream inputStream = new URL(sUrl).openStream(); // Download Image from URL
bitmap = BitmapFactory.decodeStream(inputStream); // Decode Bitmap
inputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}
#Override
protected Bitmap doInBackground(String... params) {
return downloadImageBitmap(params[0], params[1], params[2]);
}
protected void onPostExecute(Bitmap result) {
SaveImage(result, imageFileName, identifier);
}

You can download and save in doInBackground()
InputStream inputStream = new URL(sUrl).openStream(); // Download Image from URL
FileOutputStream out = new FileOutputStream(file);
Then make a loop where you read bytes in a buffer from input stream and write to output stream.
Don't forget to close all streams when done.

Sharing from snapchat to my app

I am unable to figure out how to share a video from SnapChat to my app while WhatsApp can do it without problems so it is possible.
Since SnapChat works with a contentprovider I figured I should just query the uri using the android contentresolver method. Using the databaseUtils I dumped the cursor to logcat but all it gives me back is the displayname and the filesize. I see no way how to get the actual file.
Help me out guys. What am I missing?

A bit late but i managed to solve it. Here is the solution. I added comments in the code to explain what i am doing.
void handleSendVideo(Intent intent)
{
// get title
String title = intent.getExtras().getString(Intent.EXTRA_SUBJECT);
// get the uri for the video
mVideoUri = (Uri) intent.getExtras().get(Intent.EXTRA_STREAM);
// check if it originates from snapchat
if (mVideoUri.getAuthority().equals(UriHelper.SNAPCHAT_FILE_PROVIDER))
{
Intent mRequestFileIntent;
ParcelFileDescriptor mInputPFD;
mRequestFileIntent = new Intent(Intent.ACTION_PICK);
mRequestFileIntent.setType("video/*");
// Query the content resolver to get the name of the file. Beware that you will not find
// the actual file here. You must read it from the fileDescriptor.
Cursor fileDataCursor = getContentResolver().query(mVideoUri, null, null, null, null);
String fileName = "";
if (fileDataCursor != null)
{
fileDataCursor.moveToFirst();
fileName = fileDataCursor.getString(0);
fileDataCursor.close();
}
// something is wrong... return
if (fileName.isEmpty())
{
return;
}
try {
// open the file descriptor that belongs to the file given to us by snapchat.
mInputPFD = getContentResolver().openFileDescriptor(mVideoUri, "r");
// fetch the descriptor
FileDescriptor fd = mInputPFD.getFileDescriptor();
// create in input stream from descriptor
InputStream inputStream = new FileInputStream(fd);
// This is the file that will be created
File targetFile = new File(Environment.getExternalStorageDirectory(), fileName);
// Open a outputstream connected to the file
FileOutputStream fileOutputStream = new FileOutputStream(targetFile);
// Create a buffer with a size equal to what is available from the inputstream.
// Note: we dont have to loop here because the file is available on the storage.
byte[] buffer = new byte[inputStream.available()];
// Read all data into the buffer
inputStream.read(buffer);
// Write the buffer to the outputstream
fileOutputStream.write(buffer);
// close all streams, our file is ready.
inputStream.close();
fileOutputStream.close();
mInputPFD.close();
// check if the new file exists.
if (targetFile.exists())
{
// add the file to the android MediaProvider
mVideoUri = addVideo(targetFile);
}
else
{
DialogMaker.showAlertMessage(this, "Could not read video", "unable to read video from SnapChat.", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
});
return;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
try {
logger.i("videoUri: " + mVideoUri.toString());
logger.i("videoPath: " + mVideoUri.getPath());
} catch (Exception e) {
e.printStackTrace();
}
}
public Uri addVideo(File videoFile) {
ContentValues values = new ContentValues(3);
values.put(MediaStore.Video.Media.TITLE, "My video title");
values.put(MediaStore.Video.Media.MIME_TYPE, "video/mp4");
values.put(MediaStore.Video.Media.DATA, videoFile.getAbsolutePath());
return getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);
}

iText / Cloud Print not working on Android

I'm trying to generate a simple PDF and have it passed over to Google Cloud Print, but nothing happens when I try printing the PDF to my google drive. (Login works)
How would I even authenticate that my PDF is whole and valid, for starters? I feel like I'm taking iText's word for it.
Also, I get some error telling me that
public class PDFViewer extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
this.getWindow().setSoftInputMode
(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
super.onCreate(savedInstanceState);
InputStream object = this.getResources().openRawResource(R.raw.itextkey);
LicenseKey.loadLicenseFile(object);
File root = Environment.getExternalStorageDirectory();
File f = new File(android.os.Environment.getExternalStorageDirectory()
.getAbsolutePath() + java.io.File.separator + "HelloWorld.pdf");
boolean externalStorageAvailable = false;
boolean externalStorageWriteable = false;
String state = Environment.getExternalStorageState();
// if we can read and write to storage
if (Environment.MEDIA_MOUNTED.equals(state)) {
externalStorageAvailable = true;
externalStorageWriteable = true;
}
// else if we can read but cannot write
else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
externalStorageAvailable = true;
externalStorageWriteable = false;
}
if (externalStorageWriteable) {
System.out.println("enough storage!");
// creation of a document-object
Document document = new Document();
try {
// we create a writer that listens to the document
// and directs a PDF-stream to a file
if (f.exists())
f.delete();
try {
f.createNewFile();
} catch (IOException e) {System.out.println(e);}
PdfWriter.getInstance(document, new FileOutputStream
(android.os.Environment.getExternalStorageDirectory()
.getAbsolutePath() + java.io.File.separator + "HelloWorld.pdf"));
// open + format the document
document.open();
document.add(new Paragraph("Hello World"));
} catch (DocumentException de) {
System.err.println(de.getMessage());
} catch (IOException ioe) {
System.err.println(ioe.getMessage());
}
document.close();
}
Intent printIntent = new Intent(this, PrintDialogActivity.class);
Uri hello = Uri.fromFile(f);
printIntent.setDataAndType(hello, "application / pdf");
printIntent.putExtra("title", "stuff");
startActivity(printIntent);
I get this error which I have 0 idea what to do about:
04-29 03:41:18.502: E/chromium(749): external/chromium/net/disk_cache
/backend_impl.cc:1107: [0429/034118:ERROR:backend_impl.cc(1107)]
Critical error found -8
I'd like to know what I can try to play with to get this working. The PrintDialogActivity is stock from Google's website , by the way. I turned off Exchange in App settings, I've allowed external storage to be written to in the manifest, and internet has also been enabled.
Thanks

I had this same problem until I found the solution on the Android developer website: http://developer.android.com/guide/webapps/webview.html.
The targetSdkVersion in your app's AndroidManifest.xml is probably set to 17 or higher. In that case, you need to make a small change to the PrintDialogActivity that you got from the Google Developer website. You need to add the annotation, #JavascriptInterface to the public methods in the PrintDialogJavaScriptInterface class.
final class PrintDialogJavaScriptInterface
{
#JavascriptInterface
public String getType()
{
return cloudPrintIntent.getType();
}
#JavascriptInterface
public String getTitle()
{
return cloudPrintIntent.getExtras().getString("title");
}
#JavascriptInterface
public String getContent()
{
try
{
ContentResolver contentResolver = getContentResolver();
InputStream is = contentResolver.openInputStream(cloudPrintIntent.getData());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[4096];
int n = is.read(buffer);
while (n >= 0)
{
baos.write(buffer, 0, n);
n = is.read(buffer);
}
is.close();
baos.flush();
return Base64.encodeToString(baos.toByteArray(), Base64.DEFAULT);
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
return "";
}
#JavascriptInterface
public String getEncoding()
{
return CONTENT_TRANSFER_ENCODING;
}
#JavascriptInterface
public void onPostMessage(String message)
{
if (message.startsWith(CLOSE_POST_MESSAGE_NAME))
{
finish();
}
}
}

Why Image file not found in android on server but open in browser

I am trying to download image from server. Few are downloading and few and creating problem. I don't know why.
I have downloaded and show image to user on the same location. Here is the file which is able to download.
http://www.mongreldog.co.nz/unilogo/Backgrounds_20399.png
When I am trying to download following image. This image is opening in browser but not downloading in android
http://www.mongreldog.co.nz/unilogo/Twitter-Ryan_Giggs_Imogen_Thomas_Guard-Footballer_Affair_UK_Manchester%20United_M_785.jpg
Its give exception
java.io.FileNotFoundException: http://www.mongreldog.co.nz/unilogo/Twitter-Ryan_Giggs_Imogen_Thomas_Guard-Footballer_Affair_UK_Manchester United_M_785.jpg
at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:521)
at src.com.mongreldog.appsupport.Utils.downloadImage(Utils.java:77)
at src.com.mongreldog.ViewFullCompAndCommentActivity$3.performInBackground(ViewFullCompAndCommentActivity.java:607)
at src.com.mongreldog.appsupport.HeavyWorker.doInBackground(HeavyWorker.java:44)
at src.com.mongreldog.appsupport.HeavyWorker.doInBackground(HeavyWorker.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:185)
Here is my code.
public static Bitmap downloadImage(String imageURLStr) {
Bitmap bitmap = null;
InputStream in = null;
try {
URL url = new URL(imageURLStr);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
in = conn.getInputStream();
bitmap = BitmapFactory.decodeStream(in);
in.close();
} catch (SocketTimeoutException e) {
bitmap = null;
e.printStackTrace();
} catch (IOException e) {
bitmap = null;
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
bitmap = null;
} catch (OutOfMemoryError e) {
e.printStackTrace();
bitmap = null;
}
return bitmap;
}

Use URL Encoder to encode the image URL, as you can see the URL have white spaces in the log report.
public static Bitmap downloadImage(String imageURLStr) {
imageURLStr = URLEncoder.encode(imageURLStr, "utf-8");
//... rest of your code.
}
Edit: as you reported of issue '+' instead of %20
you can use
public static Bitmap downloadImage(String imageURLStr) {
imageURLStr = imageURLStr.replaceAll(" ", "%20");
//... rest of your code.
}
For source check here

I try to use URLEncoder.encode() to encode the URL. Its strange that it convert " " with "+".
Please try Uri.encode(imageURL). I just try it and its working perfectly.
I have tested that in android.

Looks like the file name is not being parsed correctly (the space between 'Manchester' and 'United').
Use URLEncoder.encode() to encode the URL.

Your second URL is very instable. It may return 404 in the most cases even in Chome. I have seen the picture only once.

Java Servlet Image Upload Corrupt (gray bottom)

We have a servlet that accepts image uploads. Sometimes when the uploads originate in our iPhone client (flaky connection) the saved image can end up being partly or completely gray. I suspect this is due to the connection being prematurely terminated and the servlet ending up processing an incomplete image.
Whats the best remedy for this? Is there a way to see if the whole image was uploaded before processing? Should I use HTTP Content-Length header and compare whats uploaded with this number?
Thanks!
Some code for context:
#Path("images/")
#POST
#Consumes("image/*")
#Produces({"application/xml", "application/json"})
public AbstractConverter postImage(byte[] imageData) {
BufferedImage bufferedImage = null;
try {
bufferedImage = ImageIO.read(new ByteArrayInputStream(imageData));
} catch (Exception e) {
}
if (bufferedImage == null) {
throw new PlacesException("Image data not provided or could not be parsed", Response.Status.BAD_REQUEST);
}
...
BufferedImage scaledImage = ImageTool.scale(bufferedImage, imageSize);
BufferedImage thumbnail = ImageTool.scale(bufferedImage, thumbnailSize);
//Save image and thumbnail
File outputfile = new File(path);
ImageTool.imageToJpegFile(scaledImage, outputfile, 0.9f);
File tnOutputfile = new File(thumbnailPath);
ImageTool.imageToJpegFile(thumbnail, tnOutputfile, 0.9f);
...
public static void imageToJpegFile(RenderedImage image, File outFile, float compressionQuality) throws IOException {
//Find a jpeg writer
ImageWriter writer = null;
Iterator<ImageWriter> iterator = ImageIO.getImageWritersByFormatName("jpeg");
if (iterator.hasNext()) {
writer = iterator.next();
} else {
throw new RuntimeException("No jpeg writer found");
}
//Set the compression quality
ImageWriteParam params = writer.getDefaultWriteParam();
params.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
params.setCompressionQuality(compressionQuality);
//Write to the out file
ImageOutputStream ios = null;
try {
ios = ImageIO.createImageOutputStream(outFile);
writer.setOutput(ios);
writer.write(null, new IIOImage(image, null, null), params);
} finally {
writer.dispose();
if (ios != null) {
try {
ios.flush();
} catch (Exception e) {
}
try {
ios.close();
} catch (Exception e) {
}
}
}
}

Seems that the upload did not complete properly.
As you point out yourself, your best bet is to use the HTTP Content-Length header to check that all data has been received. If not, discard the image.