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How to get the name of image from url in this saveMyImage method

I use this code to save the image in the divice and it is working good
but I have problem with image name, I don't know what to tape here (I download the image from url with picasso).
Here is the code:
void saveMyImage (String appName, String imageUrl, String imageName) {
Bitmap bmImg = loadBitmap(imageUrl);
File filename;
try {
String path1 = android.os.Environment.getExternalStorageDirectory()
.toString();
File file = new File(path1 + "/" + appName);
if (!file.exists())
file.mkdirs();
filename = new File(file.getAbsolutePath() + "/" + imageName
+ ".jpg");
FileOutputStream out = new FileOutputStream(filename);
bmImg.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
ContentValues image = new ContentValues();
image.put(Images.Media.TITLE, appName);
image.put(Images.Media.DISPLAY_NAME, imageName);
image.put(Images.Media.DESCRIPTION, "App Image");
image.put(Images.Media.DATE_ADDED, System.currentTimeMillis());
image.put(Images.Media.MIME_TYPE, "image/jpg");
image.put(Images.Media.ORIENTATION, 0);
File parent = filename.getParentFile();
image.put(Images.ImageColumns.BUCKET_ID, parent.toString()
.toLowerCase().hashCode());
image.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, parent.getName()
.toLowerCase());
image.put(Images.Media.SIZE, filename.length());
image.put(Images.Media.DATA, filename.getAbsolutePath());
Uri result = getContentResolver().insert(
Images.Media.EXTERNAL_CONTENT_URI, image);
Toast.makeText(getApplicationContext(),
"download in " + filename, Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
This is the call method in onCreate:
/* button to download the image */
download_image = findViewById(R.id.button_download);
checkPermission();
download_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (checkPermission()) {
String URL = intent.getStringExtra("imageUrl");
saveMyImage ("my app",URL,"i want to get the image name from the url");
}
}
});
I want to get the image name from the url, so how can I do that?

Try this:
URI uri = new URI(URL);
URL videoUrl = uri.toURL();
File tempFile = new File(videoUrl.getFile());
String fileName = tempFile.getName();

Not able to Load Image from Server in android

Here I am trying to download a image from server. But it is always throwing Exception. Can any One tell me Why it is Happening and what will be the Correct way?
public static String getBitmap(String url) throws IOException {
InputStream is = (InputStream) new URL(url).getContent();
Bitmap bmp= BitmapFactory.decodeStream(is);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] b=stream.toByteArray();
String encoded = Base64.encodeToString(b, Base64.DEFAULT);
is.close();
return encoded;
}

Please try this functions get bitmap and download the bitmap
Bitmap bitmap = getBitmapfromUrl(imageurl);
imageview.setImageBitmap(bitmap);
SaveImage(bitmap);
public Bitmap getBitmapfromUrl(String imageUrl) {
try {
URL url = new URL(imageUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(input);
return bitmap;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
private void SaveImage(Bitmap finalBitmap) {
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/saved_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-" + n;
File file = new File(myDir, fname);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
And Add this permision in your manifest file

Call this function from your activity and get inputStream. After getting inputStream (Bitmap bitmap = Bitmap.decodeStream(inputStream));
private InputStream OpenHttpConnection(String urlString) throws IOException
{
InputStream in = null;
int response = -1;
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection");
try{
HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.connect();
response = httpConn.getResponseCode();
if (response == HttpURLConnection.HTTP_OK) {
in = httpConn.getInputStream();
}
}
catch (Exception ex)
{
throw new IOException("Error connecting");
}
return in;
}

Try using Glide or Picasso image processing library.
here is Glide demo
Glide.with(this).load(YourImageURL)
.diskCacheStrategy(DiskCacheStrategy.SOURCE)
.into(Imageview);
and add this dependency in gradle.
compile 'com.github.bumptech.glide:glide:3.7.0'
you can also set placeholder while image loading. its like alt attribute in html
Glide.with(this).load(YourImageURL)
.diskCacheStrategy(DiskCacheStrategy.SOURCE)
.placeholder(R.drawable.backimage)
.into(Imageview);
Here is Picasso demo
Picasso.with(context).load(url).placeholder(R.drawable.user_placeholder)
.error(R.drawable.user_placeholder_error)
.into(imageView);
and add this dependency:
compile 'com.squareup.picasso:picasso:2.5.2'
these lib also provide cache feature so you don't need to load second time.

Screenshot Black in Android

I've been working out how to take a screenshot programmatically in android, however when it screenshots I get a toolbar and black screen captured instead of what is actually on the screen.
I've also tried to screenshot a particular TextView within the custom InfoWindow layout I created for the google map. But that creates a null pointer exception on the second line below.
TextView v1 = (TextView)findViewById(R.id.tv_code);
v1.setDrawingCacheEnabled(true);
Is there anyway to either actually screenshot what is on the screen without installing android screenshot library or to screenshot a TextView within a custom InfoWindow layout
This is my screenshot method:
/**
* Method to take a screenshot programmatically
*/
private void takeScreenshot(){
try {
//TextView I could screenshot instead of the whole screen:
//TextView v1 = (TextView)findViewById(R.id.tv_code);
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "test.jpg");
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.flush();
fo.close();
MediaStore.Images.Media.insertImage(getContentResolver(), f.getAbsolutePath(), f.getName(), f.getName());
Log.d("debug", "Screenshot saved to gallery");
Toast.makeText(HuntActivity.this,"Code Saved!",Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
EDIT: I have changed the method to the one provided from the source
How can i take/merge screen shot of Google map v2 and layout of xml both programmatically?
However it does not screenshot anything.
public void captureMapScreen() {
GoogleMap.SnapshotReadyCallback callback = new GoogleMap.SnapshotReadyCallback() {
#Override
public void onSnapshotReady(Bitmap snapshot) {
try {
View mView = getWindow().getDecorView().getRootView();
mView.setDrawingCacheEnabled(true);
Bitmap backBitmap = mView.getDrawingCache();
Bitmap bmOverlay = Bitmap.createBitmap(
backBitmap.getWidth(), backBitmap.getHeight(),
backBitmap.getConfig());
Canvas canvas = new Canvas(bmOverlay);
canvas.drawBitmap(backBitmap, 0, 0, null);
canvas.drawBitmap(snapshot, new Matrix(), null);
FileOutputStream out = new FileOutputStream(
Environment.getExternalStorageDirectory()
+ "/"
+ System.currentTimeMillis() + ".jpg");
bmOverlay.compress(Bitmap.CompressFormat.JPEG, 90, out);
} catch (Exception e) {
e.printStackTrace();
}
}
};
mMap.snapshot(callback);
}

Use this code
private void takeScreenshot() {
AsyncTask<Void, Void, Void> asyc = new AsyncTask<Void, Void, Void>() {
#Override
protected void onPreExecute() {
super.onPreExecute();
objUsefullData.showProgress("Please wait", "");
}
#Override
protected Void doInBackground(Void... params) {
try {
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
bitmapscreen_shot = Bitmap.createBitmap(v1
.getDrawingCache());
v1.setDrawingCacheEnabled(false);
String state = Environment.getExternalStorageState();
File folder = null;
if (state.contains(Environment.MEDIA_MOUNTED)) {
folder = new File(
Environment.getExternalStorageDirectory()
+ "/piccapella");
} else {
folder = new File(
Environment.getExternalStorageDirectory()
+ "/piccapella");
}
boolean success = true;
if (!folder.exists()) {
success = folder.mkdirs();
}
if (success) {
// Create a media file name
String timeStamp = new SimpleDateFormat(
"yyyyMMdd_HHmmss", Locale.getDefault())
.format(new java.util.Date());
imageFile = new File(folder.getAbsolutePath()
+ File.separator + "IMG_" + timeStamp + ".jpg");
/*
* Toast.makeText(AddTextActivity.this,
* "saved Image path" + "" + imageFile,
* Toast.LENGTH_SHORT) .show();
*/
imageFile.createNewFile();
} else {
/*
* Toast.makeText(AddTextActivity.this,
* "Image Not saved", Toast.LENGTH_SHORT).show();
*/
}
ByteArrayOutputStream ostream = new ByteArrayOutputStream();
// save image into gallery
bitmapscreen_shot.compress(CompressFormat.JPEG, 100,
ostream);
FileOutputStream fout = new FileOutputStream(imageFile);
fout.write(ostream.toByteArray());
fout.close();
Log.e("image_screen_shot", "" + imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or OOM
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
objUsefullData.dismissProgress();
}
};
asyc.execute();
}
Hope this will help you

I have figured it out !
/**
* Method to take a screenshot programmatically
*/
private void takeScreenshot(){
GoogleMap.SnapshotReadyCallback callback = new GoogleMap.SnapshotReadyCallback() {
#Override
public void onSnapshotReady(Bitmap bitmap) {
Bitmap b = bitmap;
String timeStamp = new SimpleDateFormat(
"yyyyMMdd_HHmmss", Locale.getDefault())
.format(new java.util.Date());
String filepath = timeStamp + ".jpg";
try{
OutputStream fout = null;
fout = openFileOutput(filepath,MODE_WORLD_READABLE);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
fout.flush();
fout.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
saveImage(filepath);
}
};
mMap.snapshot(callback);
}
/**
* Method to save the screenshot image
* #param filePath the file path
*/
public void saveImage(String filePath)
{
File file = this.getFileStreamPath(filePath);
if(!filePath.equals(""))
{
final ContentValues values = new ContentValues(2);
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
values.put(MediaStore.Images.Media.DATA, file.getAbsolutePath());
final Uri contentUriFile = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Toast.makeText(HuntActivity.this,"Code Saved to files!",Toast.LENGTH_LONG).show();
}
else
{
System.out.println("ERROR");
}
}
I have adapted the code from this link so it doesn't share and instead just saves the image.
Capture screen shot of GoogleMap Android API V2
Thanks for everyones help

Please try with the code below:
private void takeScreenshot(){
try {
//TextView I could screenshot instead of the whole screen:
//TextView v1 = (TextView)findViewById(R.id.tv_code);
Bitmap bitmap = null;
Bitmap bitmap1 = null;
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
try {
if (bitmap != null)
bitmap1 = Bitmap.createBitmap(bitmap, 0, 0,
v1.getWidth(), v1.getHeight());
} catch (OutOfMemoryError e) {
e.printStackTrace();
}
v1.setDrawingCacheEnabled(false);
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap1.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "test.jpg");
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.flush();
fo.close();
MediaStore.Images.Media.insertImage(getContentResolver(), f.getAbsolutePath(), f.getName(), f.getName());
Log.d("debug", "Screenshot saved to gallery");
Toast.makeText(HuntActivity.this,"Code Saved!",Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

I faced this issue. After v1.setDrawingCacheEnabled(true); I added,
v1.buildDrawingCache();
And put some delay to call the takeScreenshot(); method.
It is fixed.

Android Activity Restarts When Turning Back To App From Adobe Reader

My app downloads a PDF file from webserver and opens it with Adobe Reader. But when I click back button on Adobe Reader, my app restarts. I don't want my app to restart when closing Adobe Reader. Note: My app has a file browser dialog, I choose a PDF and display it.
How can I prevent restarting the acitivity when turn back from Adobe Reader?
My code ...
private class DownloadFile extends AsyncTask<String, Void, Void>{
#Override
protected Void doInBackground(String... strings) {
String fileUrl = strings[0]; // -> http://maven.apache.org/maven-1.x/dokuman.pdf
String fileName = strings[1]; // -> dokuman.pdf
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
File folder = new File(extStorageDirectory, "dokuman");
folder.mkdir();
File pdfFile = new File(folder, fileName);
try{
pdfFile.createNewFile();
}catch (IOException e){
e.printStackTrace();
}
Downloader.downloadFile(fileUrl, pdfFile);
return null;
}
}
...
public class Downloader {
private static final int MEGABYTE = 1024 * 1024;
public static void downloadFile(String fileUrl, File directory){
try {
URL url = new URL(fileUrl);
HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
//urlConnection.setRequestMethod("GET");
//urlConnection.setDoOutput(true);
urlConnection.connect();
InputStream inputStream = urlConnection.getInputStream();
FileOutputStream fileOutputStream = new FileOutputStream(directory);
int totalSize = urlConnection.getContentLength();
byte[] buffer = new byte[MEGABYTE];
int bufferLength = 0;
while((bufferLength = inputStream.read(buffer))>0 ){
fileOutputStream.write(buffer, 0, bufferLength);
}
fileOutputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
...
new DownloadFile().execute(host+"dene.pdf", "dokuman.pdf");
File pdfFile = new File(Environment.getExternalStorageDirectory() + "/dokuman/" + "dokuman.pdf"); // -> filename = dokuman.pdf
Uri path = Uri.fromFile(pdfFile);
Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(path, "application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try{
startActivity(pdfIntent);
}catch(ActivityNotFoundException e){
Toast.makeText(MainActivity.this, "No PDF Viewer App!", Toast.LENGTH_SHORT).show();
...

"Invalid File" error when the images in sdcard are clicked

To share the image via Email and mms first step I need to save the image in sdcard but for me the saved image is not getting opened instead "Invalid File" error, I checked with the extension format everything is correct but don't know where I'm going wrong.
Below is the java code.
public class Share extends CordovaPlugin {
public static final String ACTION_POSITION = "ShareImage";
#Override
public boolean execute(String action, JSONArray args, CallbackContext callbackContext)
throws JSONException {
if (ACTION_POSITION.equals(action)) {
try {
JSONObject arg_object = args.getJSONObject(0);
Intent sendIntent = new Intent(android.content.Intent.ACTION_SEND);
sendIntent.setType("image/jpg");
sendIntent.putExtra(android.content.Intent.EXTRA_TEXT, arg_object.getString("image"));
String name = arg_object.getString("image");
String defType = "drawable";
String defPackage = "com.picsswipe";
int drawableId = this.cordova.getActivity().getResources().getIdentifier( name , defType, defPackage );
// Bitmap bbicon = BitmapFactory.decodeFile( arg_object.getString("image") );
Bitmap bbicon = BitmapFactory.decodeResource( this.cordova.getActivity().getResources(),drawableId );
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
OutputStream outStream = null;
File f = new File(extStorageDirectory + "/Download/",
"jj.jpg" );
try {
outStream = new FileOutputStream(f);
bbicon.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
outStream.flush();
outStream.close();
} catch (Exception e) {
}
File r1 = new File(Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/Download/", "jj.jpg");
//RETRIEVING IMAGES FROM SDCARD
Uri uri1 = Uri.fromFile(r1);
sendIntent.putExtra(Intent.EXTRA_STREAM, uri1);
sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(r1));
Uri uris = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "jj.jpg"));
this.cordova.getActivity().startActivity(sendIntent);
} catch (Exception e) {
System.err.println("Exception: " + e.getMessage());
callbackContext.error(e.getMessage());
return false;
}
}
return true;
}
}

File file;
File rootPath = android.os.Environment
.getExternalStorageDirectory();
File directory = new File(rootPath.getAbsolutePath()
+ "/Download");
if (!directory.exists())
directory.mkdir();
file = new File(directory, "filename.PNG");//.png/.jpg anything you want
try {
Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.pincheck);
FileOutputStream outStream;
outStream = new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
and you should add this permission in your manifest file..Then only file will copied to your external sd card.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>