New to android. I'm taking a screen shot of my activity, and emailing it out. Here's my process:
public void emailScreenShot() {
//get bitmap of activity
View v = DeSlip.this.getWindow().getDecorView();
Bitmap bitmap = Bitmap.createBitmap(v.getWidth(),
v.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
v.draw(canvas);
//save bitmap externally
String path = Environment.getExternalStorageDirectory().toString();
File file = new File(path, AName + "vs" + BName+ ".JPEG");
Uri pngUri = Uri.fromFile(file);
FileOutputStream fos;
//compress
try {
fos = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
Log.e("BoutSlip", e.getMessage(), e);
} catch (IOException e) {
Log.e("BoutSlip", e.getMessage(), e);
}
//email intent
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("image/png");
emailIntent.putExtra(android.content.Intent.EXTRA_STREAM, pngUri);
startActivity(Intent.createChooser(emailIntent, "Send image using:"));
}
This works well, and gets my stuff out into the internet. My question is regarding using the external storage (I have permission in manifest). Is there some process I should be doing in order to remove or delete this bitmap after I have finished using it before I close? Or will the android memory management automatically take care of that with other stack items?
My gut says no, however you do want the bitmap around long enough to email (but I wasn't seeing it on the gallery app, so I know it's not available there).
Related
I have a application where i convert the text coming from user into a QR code and display the QR code in imageView. My problem is how can i use sharing Intent on this image as their no path specified for it nor the image is stored anywhere ?
You can do it by saving the bitmap of image in cache followed by sharing it.
//To get the bitmap from Imageview
imageView.setDrawingCacheEnabled(true);
Bitmap bitmap = imageView.getDrawingCache();
//To share it via Intent**
try {
File file = new File(getContext().getCacheDir(), fileName + ".png");
FileOutputStream fOut = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
file.setReadable(true, false);
final Intent intent = new Intent(android.content.Intent.ACTION_SEND);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
intent.setType("image/png");
startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
}
When I try to share an screenshot via the Samsung email app the preview of the image I am sending is wrong. It happens only with the Samsung email app.
Here is my code:
-------here I am taking a screenshot-----------
String mPath = "";
try {
// image naming and path to include sd card appending name you choose for file
mPath = Environment.getExternalStorageDirectory().toString() + "/" + "share" + ".jpeg";
// create bitmap screen capture
View v1 = getActivity().getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
-------sending a screen shot via intent-----------
Uri imageUri = Uri.parse(sorcUrl);
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("image/jpeg");
intent.putExtra(Intent.EXTRA_STREAM, imageUri);
startActivity(Intent.createChooser(intent, "Share"));
} catch (Throwable e) {
// Several error may come out with file handling or OOM
e.printStackTrace();
}
I want to save my bitmap to cache directory.
I use this code:
try {
File file_d = new File(dir+"screenshot.jpg");
#SuppressWarnings("unused")
boolean deleted = file_d.delete();
} catch (Exception e) {
// TODO: handle exception
}
imagePath = new File(dir+"screenshot.jpg");
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
bitmap.compress(CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
}
it s working fine. But if I want to save different img to same path, something goes wrong. I mean it is saved to same path but I see it old image, but when I click the image I can see the correct image which I saved second time.
Maybe its come from cache but I do not want to see old image because when I want to share that image with whatsapp old image seen , if i send the image it seems correct.
I want to share saved image on whatsapp like this code:
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(imagePath));
shareIntent.setType("image/jpeg");
startActivityForResult(Intent.createChooser(shareIntent, getResources().getText(R.string.title_share)),whtsapp_result);
How can I fix it?
thanks in advance.
Finally I solved my problem like this:
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, getImageUri(context,bitmap_));
shareIntent.setType("image/jpeg");
startActivityForResult(Intent.createChooser(shareIntent, getResources().getText(R.string.title_share)),whtsapp_result);
v
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = Images.Media.insertImage(inContext.getContentResolver(), inImage, "TitleC1", null);
return Uri.parse(path);
}
This is just a guess, but since you save a new image (with the old name, or another, that’s not relevant) you should fire a media scan to that path so that the media provider is updated with new content.
See here:
MediaScannerConnection.scanFile(context, new String[]{imagePath}, null, null);
Or even better, wait for the scan to be completed:
MediaScannerConnection.scanFile(context, new String[]{imagePath}, null, new OnScanCompletedListener() {
#Override
void onScanCompleted(String path, Uri uri) {
// Send your intent now.
}
});
In any case this should be called after the new file is saved. As I said, I have not tested and this is just a random guess.
I use below code to take screen shot from my layout and share it via android intent but the captured screen shot in the selected app is not showing any thing.
#Override
public void onClick(View view) {
shareBitmap(this,takeScreenshot());
}
public Bitmap takeScreenshot() {
try{
View rootView = getWindow().getDecorView().findViewById(R.id.lyt_main_report_activity);
rootView.setDrawingCacheEnabled(true);
return rootView.getDrawingCache();
}catch (Exception ex){
ex.printStackTrace();
}
return null;
}
public static void shareBitmap(Context context, Bitmap bitmap){
//save to sd card
try {
File cachePath = new File(context.getCacheDir(), "images");
cachePath.mkdirs(); // don't forget to make the directory
FileOutputStream stream = new FileOutputStream(cachePath + "/image.png"); // overwrites this image every time
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
stream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try{
//start share activity
File imagePath = new File(context.getCacheDir(), "images");
File newFile = new File(imagePath, "image.png");
Uri contentUri = Uri.fromFile(newFile); //FileProvider.getUriForFile(context, "com.persianswitch.apmb.app.fileprovider", newFile);
if (contentUri != null) {
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
//shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); // temp permission for receiving app to read this file
// shareIntent.setDataAndType(contentUri, context. getContentResolver().getType(contentUri));
shareIntent.putExtra(Intent.EXTRA_STREAM, contentUri);
shareIntent.setType("image/*");
context.startActivity(Intent.createChooser(shareIntent, context.getResources().getString(R.string.share_using)));
}
}catch (Exception ex){
ex.printStackTrace();
}
}
Please use this code this is tested code :
public static void takeScreenshot(Context context, View view) {
String path = Environment.getExternalStorageDirectory().toString() +
"/" + "test.png";
View v = view.findViewById(android.R.id.content).getRootView();
v.setDrawingCacheEnabled(true);
v.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v.getDrawingCache());
v.setDrawingCacheEnabled(false);
OutputStream out = null;
File imageFile = new File(path);
try {
out = new FileOutputStream(imageFile);
// choose JPEG format
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
} catch (FileNotFoundException e) {
// manage exception
} catch (IOException e) {
// manage exception
} finally {
try {
if (out != null) {
out.close();
}
} catch (Exception exc) {}
}
// onPauseVideo();
Intent share = new Intent(Intent.ACTION_SEND);
share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(imageFile));
share.setType("image/png");
((Activity) context).startActivityForResult(
Intent.createChooser(share, "Share Drawing"), 111);
}
Since DrawingCache() deprecated above 28 so using Canvas will sort the issues for many. below answer can be used for share Screenshot including text without requesting for permissions.
To take the Screenshot
private Bitmap takeScreenShot(View view) {
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
view.draw(canvas);
return bitmap;
}
To share the Screenshot
private void shareContent(Bitmap bitmap) {
String bitmapPath = MediaStore.Images.Media.insertImage(
binding.getRoot().getContext().getContentResolver(), bitmap, "title", "");
Uri uri = Uri.parse(bitmapPath);
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("image/*");
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "App");
shareIntent.putExtra(Intent.EXTRA_TEXT, "Currently a new version of KiKi app is available.");
shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
binding.getRoot().getContext().startActivity(Intent.createChooser(shareIntent, "Share"));
}
if nothing happens it means your Bitmap is null kindly check that. or you could also fall on View.buildDrawingCache(); which will draw the View to Bitmap and then call your View.getDrawingCache();
also When hardware acceleration is turned on, enabling the drawing cache has no effect on rendering because the system uses a different mechanism for acceleration which ignores the flag. If you want to use a Bitmap for the view, even when hardware acceleration is enabled, see setLayerType(int, android.graphics.Paint) for information on how to enable software and hardware layers.
the quote was taken from the documented page
hope it helps
Tipp:The checked answer works when your device has external storage. On the Samsung 6 for example, it doesnt. Therefore you need to work with fileprovider.
Just incase somebody fell into this trap like me. The problem is that you are putting the name of the image twice.
FileOutputStream stream = new FileOutputStream(cachePath + "/image.png");
and than again.
File newFile = new File(imagePath, "image.png");
Change The seconed one to
File newFile = new File(imagePath);
Otherwise the contentUri give you the bitmap of your screenshot. I hope this helps someone. Took me 3 hours to figure it out :)
I'm taking screenshot of my Layout with this code:
View u = findViewById(R.id.mainL);
u.setDrawingCacheEnabled(true);
LinearLayout z = (LinearLayout) findViewById(R.id.mainL);
int totalHeight = z.getHeight();
int totalWidth = z.getWidth();
u.layout(0, 0, totalWidth, totalHeight);
u.buildDrawingCache(true);
Bitmap b = Bitmap.createBitmap(u.getDrawingCache());
u.setDrawingCacheEnabled(false);
obviously I'm not doing anything on quality but the result bitmap (that is a jpeg image) has a very bad quality.
what am I doing wrong?
I thing I should change it to a PNG Image somehow for better quality but I don't know how.
thanks.
Edit:
for those who ask where am I saving the bitmap I have to say that I'm not saving it at all. I just share it with this code:
String pathofBmp = MediaStore.Images.Media.insertImage(getContentResolver(), b , "title", null);
Uri bmpUri = Uri.parse(pathofBmp);
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("image/jpeg");
shareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);
shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(Intent.createChooser(shareIntent, "Share"));
I have to say that I'm not saving it at all
Yes, you are. Otherwise, you would not have pathofBmp. Now, in your case, you are delegating everything about saving the bitmap to the MediaStore. I have never used insertImage() and I have no idea what it does in terms of file formats, quality percentage, etc.
If you want more control over saving the image, use compress() on Bitmap to write it to a file yourself.
please try this:
View v = view.getRootView();
v.setDrawingCacheEnabled(true);
Bitmap b = v.getDrawingCache();
String extr = Environment.getExternalStorageDirectory().toString();
File myPath = new File(extr, getString(R.string.free_tiket)+".jpg");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myPath);
b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
MediaStore.Images.Media.insertImage(getContentResolver(), b, "Screen", "screen");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
I think problem is compress 100 is fix your problem.
reference