I have problem with my android code for taking screenshot while on video calling
I found several method for take screenshot on specific layout and this is what I used :
private void takeScreenshot() {
final FrameLayout container = (FrameLayout) findViewById(R.id.remote_video_view_container);
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
container.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(container.getDrawingCache());
container.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
if(mPath!=null){
Toast savedToast = Toast.makeText(getApplicationContext(),
"Drawing saved to Gallery!", Toast.LENGTH_SHORT);
savedToast.show();
}
else{
Toast unsavedToast = Toast.makeText(getApplicationContext(),
"Oops! Image could not be saved.", Toast.LENGTH_SHORT);
unsavedToast.show();
}
outputStream.flush();
outputStream.close();
openScreenshot(imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or DOM
e.printStackTrace();
}
}
private void openScreenshot(File imageFile) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.fromFile(imageFile);
intent.setDataAndType(uri, "image/*");
startActivity(intent);
}
i try this code for save my draw painting application that will save the drawing layout and then i try to use the same method for save video call layout but return black screen image.
i found that this method cannot use for real-time when i want to record it in video
source : How to programmatically take a screenshot in Android?
so, anyone help me what the best way to solve my problem ?
Related
How to get Android OS Phone display a screenshot every minute and send it by email?
use following code to get screen shot from your mobile
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = 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();
openScreenshot(imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or OOM
e.printStackTrace();
}
}
add permission in your manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is how you can open the recently generated image:
private void openScreenshot(File imageFile) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.fromFile(imageFile);
intent.setDataAndType(uri, "image/*");
startActivity(intent);
}
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 :)
android.webkit.WebView has capturePicture() to capture the entire contents of the current WebView, but how would you do this for only a specific element on the webpage? For example, you might have many images and text elements positioned with CSS in a div.There may be many elements but I would just like to capture the div as it is rendered in the WebView.
The only idea I came up with is to load just that div only as the entire HTML of another WebView and call capturePicture. The other question how to take a Picture object to a format that can be used with the iText library (PNG, JPEG, GIF). Is there an easier way to accomplish this?
(A function of my app is to output PDF documents. )
you can use view.setDrawingCacheEnabled(true); to capture the view as image. and then you have to create a method to do that. and here is my saving method
void Save() {
if (null != view.getDrawable()) {
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
save = view.getDrawingCache();
final File myDir = new File(folder);
myDir.mkdirs();
final Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
final String fname = "StyleMe-" + n + ".png";
file = new File(myDir, fname);
if (file.exists())
file.delete();
try {
final FileOutputStream out = new FileOutputStream(file);
save.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,
Uri.parse("file://"
+ Environment.getExternalStorageDirectory())));
Toast.makeText(getApplication(), "Image Saved",
Toast.LENGTH_SHORT).show();
} catch (final Exception e) {
Toast.makeText(getApplication(),
"Something Went Wrong check if you have Enough Memory",
Toast.LENGTH_LONG).show();
}
} else {
final Toast tst = Toast.makeText(getApplication(),
"Please Select An Image First", Toast.LENGTH_LONG);
tst.setGravity(Gravity.CENTER, 0, 0);
tst.show();
}
view.setDrawingCacheEnabled(false);
}
Hi StackOverflow community,
in my application I'd like to have a button which allows the user to capture the current view.
For that reason, I've written the following method (oriented towards: Android save view to jpg or png ):
private LinearLayout container;
public void createImageOfCurrentView(View v) {
if (isExternalStoragePresent()) {
container = (LinearLayout) findViewById(R.id.container);
container.setDrawingCacheEnabled(true);
Bitmap b = container.getDrawingCache();
File dir = new File(Environment.getExternalStorageDirectory().getPath()
+ "/" + getPackageName() + "/");
dir.mkdirs();
File file = new File(dir, "image.jpg");
FileOutputStream fos;
try {
fos = new FileOutputStream(file);
b.compress(CompressFormat.JPEG, 95, fos); // NullPointerException!
Toast.makeText(this, "The current view has been succesfully saved "
+ "as image.", Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
Toast.makeText(this, "Unfortunatly an error occured and this "
+ "action failed.", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(this, "Bacause of lacking access to the storage "
+ "of this device, the current view couldn't be saved as an image.",
Toast.LENGTH_LONG).show();
}
}
The problem is according to LogCat that there occured a NullPointerException when trying to create the jpeg. So probably the method container.getDrawingCache() is not working. On the phone the file is generated. However with the size of 0 bytes and no visible image. I would appreciate any suggestions what I have to do in order to make it work as I want.
Try it -
public static Bitmap convertViewToBitmap(View view) {
Bitmap result = null;
try {
result = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.RGB_565);
view.draw(new Canvas(result));
}catch(Exception e) {}
return result;
}
Try it -
view.setDrawingCacheEnabled(true);
Bitmap = bm = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);
I have written a bit of code that when the listview is clicked, the image at that location is stored to external memory, then the file path string is sent with the intent to view the image in the default gallery. The only problem is that it takes a seriously long amount of time (I'm talking 10+ seconds on my thunderbolt).
What I haved tried:
1. Storing the bitmap on internal memory
2. Lowering the quality of the bitmap
Here is the code:
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
if(position>0){
Bitmap bmp =adapter.getBitmap(adapter.getData(position-1));
if(bmp!=null){
//String path = context.getCacheDir().getAbsolutePath() + "/view.png";
//File f = new File(context.getCacheDir().getAbsolutePath(),"MemeCache");
//if(!f.exists())
// f.mkdirs();
String path = android.os.Environment.getExternalStorageDirectory().getAbsolutePath() + "/view.png";
Toast.makeText(context, "opening in gallery", Toast.LENGTH_SHORT).show();
File file = new File(path);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
bmp.compress(CompressFormat.PNG, 100, fos );
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Intent intent = new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(path)), "image/png");
//intent.setDataAndType(Uri.fromFile(f), "image/png");
activity.startActivity(intent);
}else{
Toast.makeText(context, arg0.getItemAtPosition(position).toString() +"is HaAAACkSS!!!!", Toast.LENGTH_SHORT).show();
}
}
}
});
Some things that might help:
1) add some timers or instrumentation to you code to see exactly where you're spending all the time: saving the bitmap to the sdcard, starting the intent, or something else entirely.
2) Once you've added timers and can measure the performance, you can see if shrinking the image or storing the image in a different place helps and if so how much. On some devices, internal storage is on the sdcard itself.
3) depending on your program, you might want to consider pre-saving the files to the sdcard (possibly in the background) so that they are probably already saved by the time the user tries to view them in the gallery.